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Lawrence Berkeley improves Li/S batteries, doubles capacity of Li-ion

12/03, 5:41pm

New cells also remove conflict minerals from construction process

A team of Berkeley Lab battery researchers led by Elton Cairns has invented an improved lithium/sulfur (Li/S) cell that, for the first time with the sulfur-based technology, offers both long cycle life and a high discharge rate in addition to the inherently low cost and light weight of Li/S batteries. Tests show that the Berkeley Lab Li/S cell had an estimated specific energy of nearly 500 Wh/kg, more than double that of current Li-ion cells which run around 200 Wh/kg.

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