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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

#571

Post by falcolas »

frosted-flakes wrote: post #554
ilyt wrote: post #548

Earlier quoted context omitted.

UAVs also have higher current requirement, and that means more weight "wasted" for chonkier electrodes Car batteries aren't pulling 50C worth of current

Don't car batteries also have very high current requirements? Turning over an engine takes an enormous amount of power.

Most batteries that run starters are not energy dense, they're typically standard lead acid batteries.

FWIW, to provide the 225 amps (for a V8 starter motor) a Tesla car battery would only need a discharge capability of 3C (1C being around 80 amps), which is within its rated capabilities. This is also for batteries which provide higher voltages, so I'm vastly overestimating the C rate required.

C is the unit for charge/discharge rates, and is based off the capacity of the battery.

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

#572

Post by usrusr »

jackmott42 wrote: post #424
dzhiurgis wrote: post #35

Earlier quoted context omitted.

“No week goes by without a revolutionary battery technology” - Engadget, circa 2010

And that is why batteries have become so much better now than they were 20 years ago.

Have they? Other than lithium based batteries getting cheaper per kilogram so that year by year, more battery use cases have switched over from inherently worse chemistries? Even just ten years ago, eneloop were still the hot thing for many applications outside of laptops, mobile phones and the odd Tesla (ten years ago was when Model S was still the fresh new successor to the converted Lotus)

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

#573

Post by dspillett »

supernova87a wrote: post #396
the_third_wave wrote: post #347

Earlier quoted context omitted.

As to whether those hybrids have a 'huge effect' on 'global warming' depends on many factors but assuming the narrative around climate change - the term 'global warming' has been swapped for the latter since the average global temperature has gone down for a number of years after an earlier steady rise - in relation to the CO₂ hypothesis holds truth the main factor of importance is the source of the carbon used in th…

by the way, how did you do all those subscript formatting tricks?? It would be great to know how to post more advanced things in the comments here.

Assuming you are on desktop/laptop:

The long-winded way is to use your OS's character map tool: find the glyph you want there and copy+paste. Under Windows 10+ there is the emoji keyboard (hit [win]+;) which also gives access to much more including super-/sub- script characters, which is a little more convenient than character map. Presumably other OSs have similar available too.

Better is to have support for a compose key sequence. Usually build in to Linux & similar, you just might have to find the setting to turn it on and configure what your compose key is. Under Windows I use http://wincompose.info/ and there are a couple of similar tools out there. In any case it is useful for more than super- and sub-scripts: accented characters & similar (áàäæçffñ), some fractions (¼,½,¾), other symbols (°∞™®↑↓←→‽¡¿⸘♥⋘»‱), and configurable too so you can make what you use most easiest to access (and if you are really sad like me you can do something https://xkcd.com/2583/ to type hallelujah too!).

On mobile devices a fair few “special” characters are usually available (though it depends what keyboard you have installed) via long-press on the right keys of the virtual keyboard.

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

#574

Post by chaorace »

fwungy wrote: post #562

>no mention of cost Means expensive chemistry. >targeting aircraft first Means expensive chemistry >no mention of durability If they were highly durable this would be an important feature so they're likely not. Sounds like these are going to be expensive special application batteries.

FWIW: lithium-ion was also expensive chemistry. If the promise matches the reality, supply chains will eventually realign to the point where consumer applications become feasible.

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

#575

Post by nuancebydefault »

bluGill wrote: post #439
sveme wrote: post #243

Earlier quoted context omitted.

I think you should read up on what ICE bans in countries where they are implemented actually means. Hint: You can continue to use the ICE vehicle you bought in 2034 in the EU until infinity.

> 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…

They said something similar about radios and books quite a long time ago.

I'm afraid the problem of generating/transporting enough electrons to all places where cars, buses, trucks, need charging will not be solved completely within 10 years.

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

#576

Post by Loughla »

wahern wrote: post #89
0xy wrote: post #65

Earlier quoted context omitted.

They're unlikely to succeed because if the massive tax on poor people (ICE bans) actually gets implemented, all of the poor people who are forced to buy an unaffordable EV will vote for populists promising to unwind the bans.

At least in the U.S., poor people buy used cars, while existing and proposed ICE bans effect new car sales. Any real economic effect will be delayed until after the ban, and in any event they'll still be buying used cars. I suppose used EVs might end up costing more, but they might end up costing less. Also, the immediate effect of bans might actually be to create a glut of cheap, used ICE cars. None of that implies…

At least in the US, poor people used to but used cars, until the used car market tanked in 2021 or so. Now they buy new, but finance for 84+ months.

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

#577

Post by mdp2021 »

thelastgallon wrote: post #555
mdp2021 wrote: post #220

Earlier quoted context omitted.

First of all, the poster was writing about the legal elimination of an option, which is does not fit such reduction. Some people value the qualities that the current (pun happened) alternatives do not offer: they are inadequate for some use cases. This includes long travel and refuelling in minutes. Furthermore, since societies are now suffering an epidemic of lunacy, electric cars can be extreme noise pollutants, be…

> electric cars can be extreme noise pollutants walk, bike and horse are better solutions for noise, not ICE cars. Ban all cars?

No: ban stupidity.

Solutions are chosen for the balance in cost, risks and benefits. Noisy but useful, within boundaries, ok. (Note: some of us are bothered already by motorways miles away when in otherwise isolated woodlands - but we are aware that traffic somehow must flow, and know that we have to select more distant places.)

Electric cars are becoming a massive threat in terms of noise pollution because people have become dumb and passive - cannot perceive and cannot react. The issue is not intrinsic in the technology, but it is part of reality: opportunity for madness + latent madness → disaster.

> not ICE cars

You do not seem to understand: the noise some fools put into electric vehicles is completely different. As in, "not a hum but brass" - where "hum" can be annoying and "brass" will surely be. See my other post nearby.

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

#579

Post by jader201 »

frant-hartm wrote: post #214
foepys wrote: post #98

Earlier quoted context omitted.

Will there be gas stations, though?

> plenty of used ICE cars Hence plenty of customers for gas stations

I'm not so sure.

I think at some point, the cost of operating gas stations will fall below a threshold that it doesn't justify keeping them open, even if there is still _some_ demand.

E.g. imagine if demand were cut in half -- I think more than half of the gas stations would shut down.

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

#580

Post by brookst »

redleader55 wrote: post #569
baq wrote: post #46

Earlier quoted context omitted.

My plan to buy an EV in the next five years may be realistic after all. Happy!

Even if we get this high energy density, I'm skeptical about its utility/impact. Right now we are barely able to mine enough lithium for our current batteries, which are used for phones and a few (percent-wise) EVs. As far as I know, and please correct me, we need to increase production by at least 8x for 5-10 rare earth elements in order for everyone to use EVs. Where are these extra rare minerals going to come from…

It won't solve the whole problem, but as battery-powered goods sell higher volumes and then age out, hopefully recycling will close some of that gap.
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