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CATL has announced a new “condensed” battery with 500 Wh/kg

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Re: CATL has announced a new “condensed” battery with 500 Wh/kg

#841

Post by elevaet »

ketzu wrote: post #195
elevaet wrote: post #84

Earlier quoted context omitted.

> battery with 500 Wh/kg Wow, that's amazing, creeping up towards the energy density of gasoline at around 1200 Wh/kg Of course you don't have to lug around the spent gasoline after you've used it, but that's really the problem too innit?

> gasoline at around 1200 Wh/kg Aren't you missing a 0 there? Gasonline should be at 12 kWh/kg instead of 1.2. [1] https://chemistry.beloit.edu/edetc/SlideShow/slides/energy/d...

Yes! My bad thank you for the correction. That's a bit sobering.

Re: CATL has announced a new “condensed” battery with 500 Wh/kg

#842

Post by thfuran »

eterevsky wrote: post #827
tarunmuvvala wrote: post #794

Earlier quoted context omitted.

The real question is, will this lead to reduction in cost? If yes, I hope they open-source it so that the fight against global warming can gain some momentum across the globe.

Cost is just one of the interesting dimensions. For various kinds of transport energy may be more important than cost. I would be prepared to pay significantly more for an EV if had range of 1000 km rather than 500.

I think I'd prefer half the battery weight.

Re: CATL has announced a new “condensed” battery with 500 Wh/kg

#843

Post by thfuran »

bryanlarsen wrote: post #756
omgomgomgomg wrote: post #570

Earlier quoted context omitted.

I dont see how in 10 years most cars will be evs, when the ev sales percentage is 12% as of now. Which equals to 9.5% of electric vehicles on the road today. The increase in ev sales is in the low single digits per year, the math just doesnt check out.

EV production increased by 5 million cars last year (most in China). Total ICE market is 65 million. ~10 years is a simple linear projection.

How much did total vehicle production increase in China last year?

Re: CATL has announced a new “condensed” battery with 500 Wh/kg

#844

Post by thfuran »

toast0 wrote: post #716
bluGill wrote: post #439

Earlier quoted context omitted.

> You can continue to use the ICE vehicle you bought in 2034 in the EU until infinity. Sure, if you can find fuel. By 2034 EVs will be enough of the market that gas stations are already closing (remember today new cars are 10 year old used cars, and there is every reason to think EVs will be half of all cars). There is still one on every corner, so you might not see this trend, but it will be in the statistics. By 20…

I'm sure this will happen. But I think your timeline is way faster than it will happen. I highly doubt gasoline will be hard to find in most places by 2045; I'd expect a lot fewer fueling stations, but I think even at 10% of the station count, gasoline will still be convenient and easy. And, if gasoline is less convenient, you can always use gas cans to extend your range. They're not too expensive, and not too inconv…

Yeah, if 80% of gas stations close, I probably wouldn't even have to change my route to get gas. I pass...I think 7 on the way to the grocery store.

Re: CATL has announced a new “condensed” battery with 500 Wh/kg

#845

Post by DennisP »

nixass wrote: post #834
DennisP wrote: post #821

Earlier quoted context omitted.

70% of Americans live in houses: https://www.builderonline.com/money/economics/80-percent-of-...

Got it, world is America. Also, the way North Americans are developing their dwellings and neighborhoods/suburbia is absolutely horrible

As of 2019, 53.3% of Europeans lived in houses: https://www.weforum.org/agenda/2021/07/flats-houses-types-ho...

"In 2008, it was estimated that six out of ten Japanese lived in single-family houses." https://en.wikipedia.org/wiki/Housing_in_Japan

I'm not going to keep googling this for everywhere but in developed countries at least, it doesn't appear that "home charging isn't a thing for vast majority of car owners."

Re: CATL has announced a new “condensed” battery with 500 Wh/kg

#846

Post by AtlasBarfed »

ly3xqhl8g9 wrote: post #129
elevaet wrote: post #84

Earlier quoted context omitted.

> battery with 500 Wh/kg Wow, that's amazing, creeping up towards the energy density of gasoline at around 1200 Wh/kg Of course you don't have to lug around the spent gasoline after you've used it, but that's really the problem too innit?

Various theoretical energy densities of batteries and gasoline: lead acid 123 Wh/kg lithium ion 250 Wh/kg zinc-oxygen 1,084 Wh/kg sodium-oxygen 1,605 Wh/kg lithium-sulfur 2,600 Wh/kg magnesium-oxygen 6,800 Wh/kg aluminium-oxygen 8,100 Wh/kg lithium-air 11,140 Wh/kg gasoline 12,700 Wh/kg from 2022, Asad A. Naqvi et. al., Aprotic lithium air batteries with oxygen-selective membranes , Table 1, https://link.springer.com…

Doesn't gasoline habe to (typically) go through carnot efficiency limits though when it combusts?

IIRC, EV motors are 90% efficient with battery power --> road power conversion. A typical ICE engine is, what, 30% efficient and maybe a bit more with good turbo design. So practically gasoline is about 4000 Wh/kg?

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