Research into lithium-sulfur batteries promises to improve the useful life of current batteries. The new technology allows a 5-fold increase in energy density over lithium-ion batteries. But due to the scarcity of materials and technological limitations, it doesn't look like these figures will increase much with lithium-ion batteries. Our integrated system approach enabled us to address the overarching challenges of lithium-sulfur batteries," he continued. Through recycling bulletproof vests, it's possible to obtain the aramid fibers needed for the membrane, and it's easier to obtain sulfur than the more scarce cobalt used in lithium-ion batteries.

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