New capacitor with 19-times energy density

Re:New capacitor with 19-times energy density by CyberDildonics on Wednesday May 08, 2024 @01:00PM (#40300365)

If an EVs batteries aren't mostly full, the limitation is in the amount of power that can be pumped into them. There isn't really a reason to charge capacitors directly or in any special way.

Even for high discharge I'm skeptical, lithium titanate batteries are probably much better, their durability and extreme charging and discharge rates make them half way to capacitors already.

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Re:New capacitor with 19-times energy density by ComputerGuru on Wednesday May 08, 2024 @02:10PM (#40301221)

> the limitation is in the amount of power that can be pumped into them

You could say that. You could also be more pedantic and say that this comes at the cost of some decrease in battery life (and efficiency) due to the resistance resulting in some amount of heat in order to facilitate this high-speed charging process.

But I don’t know if the ROI on improved battery life would be worth the complexity, size, weight, and cost of a two-stage charging process. As battery tech improves, that resistance continues to come down.

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Re:New capacitor with 19-times energy density by CyberDildonics on Wednesday May 08, 2024 @05:10PM (#40302738)

this comes at the cost of some decrease in battery life

What does? I said the limitation is usually getting enough electricity to charge them fast. Most of the time EVs are not being charged as fast as they could be.

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