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2024-11-11

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world’s first anode-free sodium solid-state battery – a breakthrough in inexpensive, clean, fast-charging batteries (pme.uchicago.edu)

submitted 4 months ago by [email protected] to c/[email protected]

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[–] [email protected] 32 points 4 months ago* (last edited 4 months ago) (2 children)

Also, the battery pack for a cell phone 30 years ago was about the same volume and weight of an entire smartphone, with a capacity of about 500 mAh. They are also far cheaper if you account for inflation.

Batteries have improved incapacity by about a factor of 10 and the cost per watt-hour has reduced by about 99% in the last 30 year. All without a single advancement in the technology, apparently.

[–] [email protected] 4 points 4 months ago

I wouldn't call it a single advancement but hundreds. The materials might be largely the same but manufacturing is huge. When you roll up some metal to make a battery then increasing the number of layers is a huge challange when they're already tiny.

[–] [email protected] 2 points 4 months ago (1 children)

All without a single advancement in the technology, apparently.

What do you mean by that?

I would say there have been a great many advancements in technology. I mean, that's what all these improvements are, right?

[–] [email protected] 8 points 4 months ago

It was sarcasm, which seems to be harder to convey in text than any number of battery advancements.