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NASA Achieves milestone Solid State Battery

the54thvoid

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Completely false:


Half an acre is over 2,000 square metres - for comparison a two-storey 4-bedroom house is slightly more than 100 sqm in total, and that would generally be divided between four people, giving a mere 25 sqm per person. Even if we were to give each person in the UK "only" 1,000 sqm and keep the remaining half for food production, leisure, and other necessities, that's still 40 times as much land per person.

Stop believing the lies peddled by those with vested interests in having you continue to believe them. Victorian-era terraced houses belong in the Victorian era, not the 21st century. Feudal landowners, including the monarchy, belong in the Middle ages, not the 21st century.

I think you miss the semantics of my point, and are too keen to read some sort of empire propping mentality where there was none.

My point still remains relevant to the problem's faced by the EV adoption rates. Your comment does nothing to change that.
 
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I think you miss the semantics of my point, and are too keen to read some sort of empire propping mentality where there was none.

My point still remains relevant to the problem's faced by the EV adoption rates. Your comment does nothing to change that.
I'm not missing the semantics, I'm obliquely agreeing with you. The problem of EV charging infrastructure is one that is far larger than it appears on the surface; it's a societal problem as much as an economic one, because in order to enable EVs to work in countries such as the UK we need massive change around the cost and usage of land, and property ownership.

Far too many people from the UK seem to operate in the mode of "houses have always been wretchedly small and cramped, so they have to continue to be, and we have to fit EV charging into them, which is obviously impossible". Versus the far more logical "we have to fit EV charging into these wretchedly small and cramped houses, so perhaps it's time to address the fact that land and property ownership needs to change to make EV charging possible". That second point leads into the common refrain of "but land and property reform is impossible because the UK is a space-constrained nation", which your assertion suggests but facts do not support - so it's important to rebut that assertion because it stymies thought around land reform.

It's all well and good to attempt to solve a problem within the given constraints, but sometimes it's the constraints themselves that are the problem; when they aren't as necessary as they may appear, removing them is actually the best way to allow the problem to be solved. For such a dramatic and necessary shift in our world as hydrocarbons to electricity as fuel, can we afford to be constrained by things like housing - that themselves need to change?
 
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I'm not missing the semantics, I'm obliquely agreeing with you. The problem of EV charging infrastructure is one that is far larger than it appears on the surface; it's a societal problem as much as an economic one, because in order to enable EVs to work in countries such as the UK we need massive change around the cost and usage of land, and property ownership.

Far too many people from the UK seem to operate in the mode of "houses have always been wretchedly small and cramped, so they have to continue to be, and we have to fit EV charging into them, which is obviously impossible". Versus the far more logical "we have to fit EV charging into these wretchedly small and cramped houses, so perhaps it's time to address the fact that land and property ownership needs to change to make EV charging possible". That second point leads into the common refrain of "but land and property reform is impossible because the UK is a space-constrained nation", which your assertion suggests but facts do not support - so it's important to rebut that assertion because it stymies thought around land reform.

It's all well and good to attempt to solve a problem within the given constraints, but sometimes it's the constraints themselves that are the problem; when they aren't as necessary as they may appear, removing them is actually the best way to allow the problem to be solved. For such a dramatic and necessary shift in our world as hydrocarbons to electricity as fuel, can we afford to be constrained by things like housing - that themselves need to change?
But if whole societies, entire ways of life have to change in order for people to have a new toy, then maybe the new toy is the problem, not society as a whole?

I'm curious how you would suggest going ahead with the UK's "housing problem".
 

the54thvoid

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But if whole societies, entire ways of life have to change in order for people to have a new toy, then maybe the new toy is the problem, not society as a whole?

I'm curious how you would suggest going ahead with the UK's "housing problem".

The answer for that will be completely off-topic. So please refrain. The thread is about EV batteries (I mean, we're already veering away from the NASA milestone bit).
 
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The answer for that will be completely off-topic. So please refrain. The thread is about EV batteries (I mean, we're already veering away from the NASA milestone bit).
Fair point.

Let's see what solid-state batteries can do to help the problems of home charging and charging times. :)
 
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But if whole societies, entire ways of life have to change in order for people to have a new toy, then maybe the new toy is the problem, not society as a whole?
EVs are not a toy, but the means to end the harm done by fossil fuels. They are also the greatest opportunity we have to create a springboard for curing the other ills of society that currently exist.
I'm curious how you would suggest going ahead with the UK's "housing problem".
  1. Any home owned by an individual or corporation, except the first, is taxed at 100% of its market value, annually, compounded by total number of homes owned (so 2 homes = 100% tax on 2nd, 3 homes = 100% tax on 2nd + 200% tax on 3rd, ...). This effectively limits home ownership to individuals, forcing landlords to sell up en masse or be bankrupted.
  2. Govt builds lots and lots of new, high-quality, homes (heat pump, solar panels, a garden, and at least one off-street parking as standard) and sells them at 10% below market value
  3. House prices collapse, which together with vastly increased supply allows almost everyone to own a home, those who cannot afford to own will rent from govt
  4. Banks either accept re-valuation of existing mortgages to new market value, or forfeit mortgaged property to the govt (preventing current single-home owners with mortgages from being affected by price collapse)
  5. Money that was previously spent on rent or mortgages is now disposable income that goes directly into the economy, supercharging it
  6. Massive increase in spending on home renovations and improvements, driving a boom in that industry
  7. Previous points more than pay for govt investment in housebuilding and rebalancing of house valuations
 
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I only speculated about car ownership because it closely relates to parking space and the ability to charge an EV, as @the54thvoid pointed out. You can say "the average American has 3 cars and 2 bikes with the ability to store and charge 5 more" (crude example), but to that, I can only respond by saying that the average UK town dweller parks on the street and has no chance to charge an EV at home. I'm lucky because I live in an apartment, so I have my own dedicated parking space in a private lot, but even that limits me to one car per household and no ability to charge an EV.

Seriously, anyone who thinks battery EV is the future and everyone should have one needs to come to a UK town and see how people live.
I meant speculations based on people’s lives experiences — it’s valuable to generalize about populations in these sorts of discussions because everyone lives in different circumstances. If we were to be specific about it, people who have larger properties are probably less likely to adopt EVs because of the distance problem, access to repair/battery replacement facilities, political values (not all people in rural areas!!!), and so on. Despite the challenges, it might be easier and more effective to change the terrain of urban areas, where folks are used to large changes and the greater density has a more significant effect on the climate. Even with less car ownership the effect of emissions is greater in urban areas, whereas in rural areas things like agriculture and bad energy strategies are a greater issue.
Completely false:


Half an acre is over 2,000 square metres - for comparison a two-storey 4-bedroom house is slightly more than 100 sqm in total, and that would generally be divided between four people, giving a mere 25 sqm per person. Even if we were to give each person in the UK "only" 1,000 sqm and keep the remaining half for food production, leisure, and other necessities, that's still 40 times as much land per person.

Stop believing the lies peddled by those with vested interests in having you continue to believe them. Victorian-era terraced houses belong in the Victorian era, not the 21st century. Feudal landowners, including the monarchy, belong in the Middle Ages, not the 21st century.

I'm not missing the semantics, I'm obliquely agreeing with you. The problem of EV charging infrastructure is one that is far larger than it appears on the surface; it's a societal problem as much as an economic one, because in order to enable EVs to work in countries such as the UK we need massive change around the cost and usage of land, and property ownership.

Far too many people from the UK seem to operate in the mode of "houses have always been wretchedly small and cramped, so they have to continue to be, and we have to fit EV charging into them, which is obviously impossible". Versus the far more logical "we have to fit EV charging into these wretchedly small and cramped houses, so perhaps it's time to address the fact that land and property ownership needs to change to make EV charging possible". That second point leads into the common refrain of "but land and property reform is impossible because the UK is a space-constrained nation", which your assertion suggests but facts do not support - so it's important to rebut that assertion because it stymies thought around land reform.

It's all well and good to attempt to solve a problem within the given constraints, but sometimes it's the constraints themselves that are the problem; when they aren't as necessary as they may appear, removing them is actually the best way to allow the problem to be solved. For such a dramatic and necessary shift in our world as hydrocarbons to electricity as fuel, can we afford to be constrained by things like housing - that themselves need to change?
It is semantics, though. It’s a ahistorical counterfactual — what if we capitalism had chose to distribute land rather than concentrate people to urban areas? It’s not a bad argument, it just confuses a tertiary problem (housing) with what I assume we both agree is the central problem.

Like, I’m sympathetic to your plan from the last post (although I think you misunderstand surplus value and forget about surplus labor), but I honestly don’t believe that we’d make such a transition if ev’s were mandated.
 
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EVs are not a toy, but the means to end the harm done by fossil fuels. They are also the greatest opportunity we have to create a springboard for curing the other ills of society that currently exist.
  1. Any home owned by an individual or corporation, except the first, is taxed at 100% of its market value, annually, compounded by total number of homes owned (so 2 homes = 100% tax on 2nd, 3 homes = 100% tax on 2nd + 200% tax on 3rd, ...). This effectively limits home ownership to individuals, forcing landlords to sell up en masse or be bankrupted.
  2. Govt builds lots and lots of new, high-quality, homes (heat pump, solar panels, a garden, and at least one off-street parking as standard) and sells them at 10% below market value
  3. House prices collapse, which together with vastly increased supply allows almost everyone to own a home, those who cannot afford to own will rent from govt
  4. Banks either accept re-valuation of existing mortgages to new market value, or forfeit mortgaged property to the govt (preventing current single-home owners with mortgages from being affected by price collapse)
  5. Money that was previously spent on rent or mortgages is now disposable income that goes directly into the economy, supercharging it
  6. Massive increase in spending on home renovations and improvements, driving a boom in that industry
  7. Previous points more than pay for govt investment in housebuilding and rebalancing of house valuations
Don't get me wrong, I didn't say we should continue using fossil fuels until we run out and society collapses naturally. All I'm saying is, EVs in their current state introduce far greater problems on an individual level than they solve on a global level. As long as this is the case, I say that a different solution is needed. Let's see if solid state batteries make an impact.

As for your plan, it's interesting, but it won't move millions out of their currently owned homes into better ones with EV charging possibilities.
 
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The answer for that will be completely off-topic. So please refrain. The thread is about EV batteries (I mean, we're already veering away from the NASA milestone bit).
Sorry, I only saw this AFTER I'd posted my response.
 
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Until batteries can be charged rapidly, without tanking the lifepsan of it, it will remain an EV shortcoming, compared to petrol/gas, or hydrogen.
Exactly. EV's have made great strides, but have a long way to go before they can be considered a viable replacement to Internal Combustion types. This advancement in solid-state, if it works out, could be the advancement we need to make EVs viable long term.
 
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Another type of battery...

This looks like awesome new tech to store excess electricity generated by renewables during quiet times. A wind farm could make a lot of power during a windy night and release it the next day.
 

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And then there are winters. You'd need to have solar panels on all doors beside the roof in order to capture some sun rays in winter. All cars would be black, with different artistic patterns of silver lines.
That must be something that happens in your geographical region only, winters aren't like that here

Hell fricken yeah! You don't?!? Seriously with that? I have 5 cars and 2 trucks. Only one was built this decade(daughters Kia) and 2 last decade. The others are all more than 15 years old. One of them is from 1989. ALL run perfectly or nearly so. I expect MY cars to last several decades. I'm not buying an EV until they measure up to THAT standard.


Seriously? My Acura TSX was new when I bought it. So was my Titan and the Civic. So again, seriously with that?

Please don't take offense, but I had to call moose-muffins on what you said..
You should probably keep in mind how your perspective differs to a lot of other people, when others have a single car that needs to cover the needs of an entire family, and much more usage - you spread the load over multiple vehicles when others have all the demands on one.
 
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So far no battery tech is fire safe - the older ones could boil dry and overcharge and catch fire, too
Nickel Metal Hydride is about as flamable as anything else in your car. ie, not much.

It's also a lot heavier though.
 

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Nickel Metal Hydride is about as flamable as anything else in your car. ie, not much.

It's also a lot heavier though.
NMH isn't suited for car batteries
They go flat on their own, and heat up massively when charging
Nickel–metal hydride battery - Wikipedia

They've got limited use in hybrid vehicles where they have constant charging going on, with their high-amperage loads being for startup only with long, slow charging times to follow.

copy-pasting to save effort

Lithium-ion batteries​

The most common type of battery used in electric cars is the lithium-ion battery. This kind of battery may sound familiar – these batteries are also used in most portable electronics, including cell phones and computers.

Lithium-ion batteries have a high power-to-weight ratio, high energy efficiency and good high-temperature performance. In practice, this means that the batteries hold a lot of energy for their weight, which is vital for electric cars – less weight means the car can travel further on a single charge. Lithium-ion batteries also have a low “self-discharge” rate, which means that they are better than other batteries at maintaining the ability to hold a full charge over time.

Additionally, most lithium-ion battery parts are recyclable making these batteries a good choice for the environmentally conscious. This battery is used in both AEVs and PHEVs, though the exact chemistry of these batteries varies from those found in consumer electronics.

Nickel-metal hydride batteries​

Nickel-metal hydride batteries are more widely used in hybrid-electric vehicles but are also used successfully in some all-electric vehicles. Hybrid-electric vehicles do not derive power from an external plug-in source and instead rely on fuel to recharge the battery which excludes them from the definition of an electric car.

Nickel-metal hydride batteries have a longer life cycle than lithium-ion or lead-acid batteries. They are also safe and tolerant to abuse. The biggest issues with nickel-metal hydride batteries is their high cost, high self-discharge rate, and the fact that they generate significant heat at high temperatures. These issues make these batteries less effective for rechargeable electric vehicles, which is why they are primarily used in hybrid electric vehicles.

Lead-acid batteries​

Lead-acid batteries are only currently being used in electric vehicles to supplement other battery loads. These batteries are high-powered, inexpensive, safe, and reliable, but their short calendar life and poor cold-temperature performance make them difficult to use in electric vehicles. There are high-power lead-acid batteries in development, but the batteries now are only used in commercial vehicles as secondary storage.


Ultracapacitors​

Ultracapacitors are not batteries in the traditional sense. Instead, they store polarized liquid between an electrode and an electrolyte. As the liquid’s surface area increases, the capacity for energy storage also increases. Ultracapacitors, like lead-acid batteries, are primarily useful as secondary storage devices in electric vehicles because ultracapacitors help electrochemical batteries level their load. In addition, ultracapacitors can provide electric vehicles with extra power during acceleration and regenerative braking.


And from wiki, most nimh batteries need to charge at extremely low rates to avoid the heat issues

The describe the charge rate as C and a number, which would be how many hours it takes to charge the device to full. C/10 is "trickle" charging (10 hours to full charge) which dumb AA/AAA chargers extend to 15 hours to be generally safe.
Nickel–metal hydride battery - Wikipedia
The values used to keep nimh safe for long term use range from c/10 to c/300

I dont think 10 to 300 hour charging times will get the job done.


They WERE used briefly, but the heat while charging issue was a serious fire hazard, and the charging times were slooooow.
Oh and they suck in the cold, discharging really fast. That rules them out for a lot of the world.
1689398598609.png
 
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They go flat on their own, and heat up massively when charging
My uncles hybrid (an original toyota prius) used them.

And the rest depends on the formulation. As you are aware from eneloops, you can make them acceptable discharge wise for automotive. Of course, that will add to weight more.

At any rate, I did not say they were ideal for automotive but was refuting the claim that "all battery chemistries are fire hazards" Its more nuanced than that.
 
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My uncles hybrid (an original toyota prius) used them.

And the rest depends on the formulation. As you are aware from eneloops, you can make them acceptable discharge wise for automotive. Of course, that will add to weight more.

At any rate, I did not say they were ideal for automotive but was refuting the claim that "all battery chemistries are fire hazards" Its more nuanced than that.
I guess NiMH is okay for a hybrid because it can use regenerative charging at a slow rate. It's different than charging from a power outlet.
 
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Yeah yeah.

BOM of modern phones is typically around 1/3 or less of the sale price.

"economies of scale" regardless, they could have put working solid state batteries in every flagship three years ago and still made 50-70% profit margins, but then why would you upgrade?

The batteries are the only consumable parts left on modern electronics (besides maybe the OLED screen, but that's a five+ year issue that's been steadily improving for years), and soon to be the reason why EV's need replacing every 5-10 years. They don't have the mechanical wear/tear of ICE cars but manufacturers need to find ways to get consumers to replace their hardware every few years.

Nevertheless, companies like Tesla build huge factories to pump out inherently flawed EV batteries that have a limited usability life, and whose short range will only get ever shorter with time and temperature.

Look up the cost of non warranty battery replacements for EVs, and tell me this isn't the next cash cow for manufacturers.

What's more, since parts these days are typically serialized and coded to work with paired computers, you won't be able to do these repairs yourself.

I.e. swapping components from identical brand new iPhones or other smartphones, will lead to them becoming dysfunctional or completely non functional.

I guarantee you, when solid state/ceramic batteries come to market in volume, they will either be: ultra premium low volume in cars such as the Lucid Air, or gimped in some way to force maintenance/replacement after a set period of time, or be cost cut in capacity compared to their conventional alternatives, so the advantages are limited to safety, and small solid state cells are used in place of larger conventional arrays, rendering the increased longevity and density irrelevant due to increased load per cell.

Good engineering solutions don't make it into the final product unless they are long term profitable for the manufacturer. Nor do patents held for years typically lead to a product, because they only do so if they lead to profit, and better, longer lasting products aren't profitable. Circular economy "recycle" mentality is the latest way to encourage replacing things every 2-3 years.

EU and other governments had to mandate that car parts be available for a certain amount of years, I think seven, because manufacturers would stop selling certain parts, to force people to buy new cars, aftermarket parts wouldn't work unless you reprogrammed the ECU.

My bet is on the microcontroller for the battery failing after x number of years, and being impossible to replace by anyone other than the manufacturer, for "security" reasons. This is already the case with batteries from Apple (if you replace with a non paired, non Apple battery, your phone will lose functionality), and the rest of the industry tends to follow them.

I cannot even begin to ask where you seem to be pulling these assertions from. They seem...less a consistent thought and more a collection of competing conspiracy theories about why things happen.

Let me start with the BoMs only being 1/3 the price of the consumer cost of a thing... Because, wow. How do you even pull that from your hat? Let me logic my way through this.
1) Raw material is extracted...often a 5-15% markup for sale to a manufacturer.
2) Manufacturer refines that raw material into something. Another 5-15% markup traditionally.
3) That something becomes a sub-component, shipped to an assembly plant.
4) The assembly plant builds the final good. Here we start seeing 15-30% of the good being wholesale markup...as they have the potential for complex failure modes and have to account for a lot more losses.
5) The final good is sold wholesale to a vendor, who sends it to the consumer. You generally see 200-300% of the BoM cost here...because it's got to account for retail losses, storage, transportation, and all the other fun.
If you have a problem with this...which is actually closer to 300-400% of actual raw material costs...then you have an issue with capitalism. That's not a fault of batteries.


You...are poorly informed about cars. Full stop. You are also poorly informed about the failure rate of electronics. Let me help you. The average ICE vehicle requires regular maintenance...and so does a Tesla. The average ICE vehicle generally has its shortest maintenance period on braking and other friction based components...which is the same as a Tesla. Regenerative braking is fantastic...until you decide to do the long term math and discover that the huge thermal load on such actually is a killer of electric motors...because physics. Elaborating on that, as materials heat and cool they become brittle over time. The insulation on coils dies, creating shorts, killing motors. Believe it or not, having a motor rewound is potentially very expensive...like as much as a large chunk of those batteries. The other bit you seem to not understand is that capacitors have lifetimes, resistors can overheat, and there are literally hundreds of these components embedded into the framework of the Tesla...so even if you only have a 0.001% failure rate that's 0.999^1000 (for 100 parts), or a 64% failure rate. Kinda seems like good old stupid ICE engines are comparatively great...because reliability through simplicity is pretty baller.

So...let me also suggest that batteries don't die. This will sound like insanity, but there's generally one failure mode. Through excessive heating, the mixture of electrolyte and salts formed as a carrier crystallize into a non-conductive structure. Said structure resists flow, creating heat, converting more of that material into dendritic crystals that stretch from the anode/cathode. This dendritic crystal growth basically saps the battery of power through internal resistance to flow...and it's why we see battery packs off-gas before exploding. The crystals liberate heat, liberating electrolyte, leading to vaporized off-gas, cells expanding, and boom. Did you know that by creating an unstable and rapidly cycling voltage you can use the internal desistance of those crystals to obliterate themselves...effectively rehabbing the battery? The following is for lead acid, but it's the same principal for lithium: Hackaday - Battery Breaking Sulfur Crystals
The problem is that standard batteries are a bit less explosive when exposed to air...so rehabbing batteries is generally done by stripping the cells, chemically separating the components, and rebuilding the cells. Who would have thought it, nobody in their right mind would pulse lithium chemistries due to the associated energy density?

If you'd like a paranoid theory that isn't paranoid, then you should latch on when people talk about fast charging being a way to limit battery life. You should not latch onto the 5-10 year lifetimes...because if I exposed you to what your battery is expected to endure you'd last that long or less too. Huge temperature cycles, high temperature variability by location, fast charging shenanigans, and rapid charge and discharge cycles brought on by the regenerative braking and the like are great features for the consumer...and basically a requirement that any chemistry will be severely tested.



I'm going to categorize the rest of this largely into silliness with manufacturing and silliness with the market. I'll explain why...but for right now your two salient attacks are that manufacturing is stripping our rights to repair, and that the cost of replacing things is high.

To the former, you can contact a legislator. My two word answer to this is "John Deere." They actually were taken to task when their idiotic locking created a black market for people to have "a friend of a friend" who could come out and reprogram your tractor for a new attachment...or a technician could be out in 3-6 weeks and connect the reprogramming box for the 5 minutes to change the firmware. Of course, a farmer can't wait weeks for harvest times...so they actually lobbied the government for curtailing Deere's constant move to make their goods only serviceable by their techs. Greed sucks but if you want to "fix" the cost of something like having to reprogram your iPhone for a new start button, having to spend a grand to have a tech spend 5 minutes so you can get your physically attached thresher to work with your tractor, or to anything else then you need legislation...because in a mostly service economy it makes sense that you'd be charged the hugely profitable service fees if a company can. Again, this is greed and not a requirement of the batteries.

I choose the later point because you seem to want to focus on money. Let me help you reword this. You attack the economies of scale that would allow adoption, then cite Tesla. That's backwards, because they literally took government money to build standard size lithium cells...that Tesla packages into units for their vehicle. They are literally taking a proven technology and driving down costs with novel packaging (battery groups) and an insane volume of production. Likewise, you cite the NASA battery as probably a halo product...but based upon nothing. Bespoke production would not be effective, but if you think to the next step the real question is how they could scale...and the supply chain involved.
Lithium is affordable because the metal salts are stable, and can be harvested. These are then chemically processed into batteries. Said batteries are one time use...and afterward are currently stored as hazardous waste. Assuming about 7 years of lifespan, that's 10 batteries in your lifetime. This means that if the selenium solution just competed with lithium it could be 10x as expensive if it could last 70 years. That'd also require a way to get the material....which is a non-starter. Lithium in the Earth's crust is about 50,000 atoms per billion, whereas Selenium is 10. Source is here: Lithium vs Selenium

What this means is that it's not a conspiracy. It's quite simple to say the issue with this new battery is not about economy of scale, but logistics and resources. It's funny though, somehow everybody seems to chalk this up to conspiracy rather than simple abundance of resources...and if you're NASA spending billions to get a rover to Mars another 10k on a novel battery is nothing if you can guarantee specific mission critical performance. I believe the relevant phrase is never attribute to malice what can easily be attributed to ignorance. After reading through another thread, and seeing the same "journalists" claim the same news headlines without a critical thought passing between their ears, I know the truth of this matter. NASA made a great claim to support their science, the public is promised it has value, and their lack of attention spans will bury this along with hundreds of other novel scientific steps (like this one in 2020 Novel battery concept) until someone makes a reasonable discovery.



If it isn't clear, in this lifetime we've already made enough changes to be silly. Lead-Sulfur, NiMh, Lithium Polymer, Lithium Ion, and a bunch of other tech has been made accessible because we demanded more power. It was profitable because the resources are abundant, and the entire industry created itself to scale. If tomorrow you could find a novel chemistry of silicon, carbon, and aluminum it'd be in-production next week. Please note those three elements are the bulk of the composition of earth's crust...so even if the process was dozens of times more expensive than lithium it'd still be preferred because the raw materials would be fractions of the cost of the relatively rare Lithium atoms....let alone the damn near unicorn of selenium. You seem to buy into this partially, but I wanted to make sure that it's clear that there will always be a cost of process, cost of resources, and rarity consideration which trumps and discussion of process scalability...as Tesla already proved an idiot front man with charm can get a surprising amount of tax payer money to address issues.
 

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"all battery chemistries are fire hazards" Its more nuanced than that.
Indeed - it's the reasons WHY they're a hazard that changes but the simple fact is that stored energy can easily be turned into heat... it's why we use them in the first place. Energy is energy.

Boiling dry an LA, charging NiMh too fast, a trickle charge into Li-Ion with it's low self discharge...
Physical damage can make any or all of them a fire hazard, because of the simple reason of an electrical short - sparks be bad.
 
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Indeed - it's the reasons WHY they're a hazard that changes but the simple fact is that stored energy can easily be turned into heat... it's why we use them in the first place. Energy is energy.

Boiling dry an LA, charging NiMh too fast, a trickle charge into Li-Ion with it's low self discharge...
Physical damage can make any or all of them a fire hazard, because of the simple reason of an electrical short - sparks be bad.
I suppose that's fair. Of course where there is energy there is flame potential.
 
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You should probably keep in mind how your perspective differs to a lot of other people
Of other nations, sure. And I do. For the states? Nah, our family is fairly common.
when others have a single car that needs to cover the needs of an entire family, and much more usage - you spread the load over multiple vehicles when others have all the demands on one.
Very good points, and this would highlight even further the need for EV, and the batteries that power them, to be MUCH more effective at the job intended. That is what makes these developments from NASA(and others) so exciting!

Nickel Metal Hydride is about as flamable as anything else in your car. ie, not much.

It's also a lot heavier though.
True, NMH is a lot safer, yet energy density isn't as great as Lithium chemistries, which going in the wrong direction.
 
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I suppose that's fair. Of course where there is energy there is flame potential.
Apart from that, chemically inert substances don't make a chemical battery.
 
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