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"World's highest-capacity" solid-state battery developed in Japan

asia.nikkei.com

61–70 of 92 posts

Re: "World's highest-capacity" solid-state battery developed in Japan

#61
post #56

Earlier quoted context omitted.

It's not practical. Just like how you won't measure the distance between two cities in metres.

The SI system allows to use prefixes that take care of different orders of magnitude. 1 Wh = 3.6 kJ

Still it's easier to go with Wh than joules. We have a lot of intuition about watts and hours but not a lot abou joules.

Re: "World's highest-capacity" solid-state battery developed in Japan

#63
post #14
post #2

---------------------------------------------------------------- Dear battery technology claimant, Thank you for your submission of proposed new revolutionary battery technology. Your new technology claims to be superior to existing lithium-ion technology is is just around the corner from taking over the world. Unfortunately your technology will likely fail, because: [ ] it is impractical to manufacture at scale. [x]…

also, dear technology journalist: [x] your description uses milliamp hours and milliamps per hour interchangeably [x] milliamp hours is a useless metric when we don't know how big/heavy said battery is [x] milliamp hours is a useless metric when we don't know the battery's voltage

At least it doesn't use milliamp hours per hour as a unit. I'm pretty sure one of the cars actually does that with KW (Kwh/hr).

Re: "World's highest-capacity" solid-state battery developed in Japan

#64

Earlier quoted context omitted.

I guess the inclusion of "per" there was a typo? They used the correct units earlier in the article.

Which probably means that the journalist doesn't which one is correct. Why even bother writing an article of such quality?

If the mistake only happened once, its just as likely to be an "improvement" from the editor who actually doesn't know why one is correct.

Re: "World's highest-capacity" solid-state battery developed in Japan

#65
post #2

---------------------------------------------------------------- Dear battery technology claimant, Thank you for your submission of proposed new revolutionary battery technology. Your new technology claims to be superior to existing lithium-ion technology is is just around the corner from taking over the world. Unfortunately your technology will likely fail, because: [ ] it is impractical to manufacture at scale. [x]…

Li-ion batteries have been the same for like 40 years, they've just gotten smaller.

Re: "World's highest-capacity" solid-state battery developed in Japan

#66
post #46

BTW: Whatever happened to those fuel cell proposals promising to replace laptop batteries altogether? I remember pictures of laptops running on working prototypes claiming to achieve 10 hours run time on a single "charge" 10 years ago. EDIT: Actually that's 17 years ago: https://www.techradar.com/news/world-of-tech/whatever-happen...

Linus Tech Tips looked at a fuel cell USB supply a few years ago. It sucked horribly, and barely produced any power: https://www.youtube.com/watch?v=1-yLqwGS2dA Besides that, we can have 10 hours from a battery quite easily right now. If you need more, there are external batteries powerful enough to power a laptop over USB-PD. And after that you just charge it from any power outlet. It's a known technology, very matu…

That reminds me of mikeselectricstuff's teardown of a Hydrogen fuel cell power bank: https://youtu.be/y48wCuC3KcA

An extremely well engineered piece of technology that may have been selling at a loss at $150. Only 26wh at up to 500ma, can't recharge it at home, have to drive to specific stores to pay £6 to swap the cartridge. Just completely impractical.

Re: "World's highest-capacity" solid-state battery developed in Japan

#67
post #10

Earlier quoted context omitted.

Yet another example of a glib response ignoring the actual facts in the article and ironic to boot given that lithium-ion suffers from several of the flaws listed. The funny thing is, none of the claims you make are correct and you miss the point where this tech is specifically designed to cover areas where Li-ion fails (like high temp and places where having a battery explode into flaming debris is a bad thing.)

Humour is rarely appreciated here, but I found this funny and on point. Battery technology announcements are always extremely over hyped. Mostly by media and PR departments rather than actual scientific or domain specific outlets. Advancements happen, but even if they are technically and commercially viable, it takes years until anything becomes actually useful.

> Humour is rarely appreciated here, but I found this funny and on point.

Yes, we just play our hyperbole with a straight bat.

Re: "World's highest-capacity" solid-state battery developed in Japan

#68

Earlier quoted context omitted.

Humour is rarely appreciated here, but I found this funny and on point. Battery technology announcements are always extremely over hyped. Mostly by media and PR departments rather than actual scientific or domain specific outlets. Advancements happen, but even if they are technically and commercially viable, it takes years until anything becomes actually useful.

Battery technology announcements are always extremely over hyped. Right, except this announcement specifically isn't. It's a short description of a new technology with targeted use-cases, which explicitly points out the ways in which it's not ready to displace existing technologies. You are correct that there is often unjustified hype around battery technology in general. But this article is absolutely not that.

This is true, the article is essentially 'cool new battery - for satellites'.

Re: "World's highest-capacity" solid-state battery developed in Japan

#69
post #15

Without talking in terms of energy (Watt.hours) it's impossible to compare with existing batteries. mAh is only useful when comparing the same battery cell chemistry, as the voltage is the same. This battery could be lower or higher voltage - making 1000mAh more or less energy than an equivalent existing 1000mAh battery.

A photo in the press release shows a battery with 3.65v stamped on it, if that helps

The voltage changes over the discharge cycle so watts are still the preferred unit.

Re: "World's highest-capacity" solid-state battery developed in Japan

#70

Earlier quoted context omitted.

The SI system allows to use prefixes that take care of different orders of magnitude. 1 Wh = 3.6 kJ

Still it's easier to go with Wh than joules. We have a lot of intuition about watts and hours but not a lot abou joules.

1 Joule = 1 Watt-Second

The problem is that our system of timekeeping does not conform to SI's prefix system. Not many people have an intuitive grasp of what a kilosecond is.

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