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| Physics arXiv |
"But good as they are, lithium batteries are not up to the demanding task of powering the next generation of electric vehicles. They just don't have enough juice or the ability to release it quickly over and over again.
"The problem lies with the cathodes in these batteries. The specific capacities of the anode materials in lithium batteries are 370 mAh/g for graphite and 4200 mAh/g for silicon. By contrast, the cathode specific capacities are 170 mAh/g for LiFePO4 and only 150mAh/g for layered oxides.
"So the way forward is clear: find a way to improve the cathode's specific capacity while maintaining all the other characteristics that batteries require, such as a decent energy efficiency and a good cycle life.
"Today, Hailiang Wang and buddies at Stanford University say they've achieved a significant step towards this goal using sulphur as the cathode material of choice."
This could be a game-changer, geopolitically speaking:
Note: mAh = milliamp hour. Karl Kuhn gives an excellent explanation (click on his name).
Physics arXiv: Graphene-Wrapped Sulfur Particles as a Rechargeable
Lithium-Sulfur-Battery Cathode Material with High Capacity and
Cycling Stability
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