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50 points

I’ve been reading about battery breakthroughs for decades. And I remember when the latest in battery tech was alkaline, then Ni-Cd, then Li-Ion, and now LiPo. All of those have ended up in consumer products.

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20 points

You skipped Ni-MH there, that was major for not having the memory problems of Ni-Cd. We still use those in AA and AAA rechargeable batteries.

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5 points
*

Ni-MH is was also in a lot of hybrid cars.

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3 points

Are they still making NiMH hybrid packs?

Lithium is far superior

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13 points

Ni-MH production for EVs was effectively shutdown by Texaco and later Chevron through patent acquisitions.

https://en.m.wikipedia.org/wiki/Patent_encumbrance_of_large_automotive_NiMH_batteries

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2 points

Holy shit. I had no idea.

Chevron is pretty fucking evil for a lot of reasons, but we’ll add this one to the pile, I guess.

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2 points

totally TIL worthy

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9 points
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A little pedantic note, LiPo is still a type of Li-Ion (maybe I got that right)

and the bigger recent breakthrough was LFP (Lithium iron phosphate / LiFePO4)

And probably safe to call Sodium-Ion and solid state the next big phases of development

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1 point

You can buy sodium ion cells online right now. It’s not the next phase, it’s here.

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4 points
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LFP is actually a relatively old battery technology, it’s only now that the patent is expired that it’s starting to breakthrough (outside of China, they somehow got a license if I understand it correctly).

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31 points
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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.

/s

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2 points

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?

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8 points

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

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4 points

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.

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0 points

Hey! Don’t screw up Lemmy’s Debbie Downer vibe!

/s

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