Talks to Watch

Professor Jeff Dahn | WIN Seminar Series

76K views · Sep 6, 2013 · 1:13:30 · 2 HN recommenders · 3 mentions · discussed 2015–2017

Professor Jeff Dahn lectures on why lithium-ion batteries die and how chemistry changes could make them last decades.

Why Hacker News points people here: HN recommends it as a detailed look at battery degradation, in threads on EV and grid storage lifetimes.

“This lecture (1h, 13m) goes into it in detail, including how it can be prevented, ways of testing, and more”HN comment, 2015

What Hacker News said 3

Recommendswill_hughesMay 2015

“This lecture (1h, 13m) goes into it in detail, including how it can be prevented, ways of testing, and more”

Detailed lecture on why lithium batteries degrade, prevention and testing

Full comment

It's a chemical reaction - there's a gradual degradation in the anode/cathode as a reaction with the electrolyte. There's environmental factors to it too - temperature has an effect, and if you can control the temperature over time, you can reduce the effect. This lecture (1h, 13m) goes into it in detail, including how it can be prevented, ways of testing, and more: this video

in “Tesla battery storage will accelerate exit of coal generators” · view on HN
RecommendsRoboTeddyAug 2017

“Battery science is fascinating. Here's in an-depth look at degredation”

In-depth look at battery degradation by Jeff Dahn

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Battery science is fascinating. Here's in an-depth look at degredation: this video The speaker (Jeff Dahn -- he now works with Tesla) pioneered a faster way to tell how fast a battery will degrade (which means you can iterate your design faster!)

in “Tesla Model S battery degradation data” · view on HN
Cites itmonkmartinezMay 2017

“Why do Lithium batteries die? By Professor Jeff Dahn - WIN Seminar Series[0]”

Lecture on why lithium batteries die

Full comment

Are you sure? Super fast discharge and charge cycles are only part of the story. I have seen that the Nissan Leaf battery problems stem from heat, choosing a poor mixture of electrolyte and additives in the Lithium. Why do Lithium batteries die? By Professor Jeff Dahn - WIN Seminar Series[0] [0] this video

in “Electric Cars Soon Will Cost Less Than Gas Cars, Research Suggests” · view on HN