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New Li-S battery shows cycle performance comparable to that of Li-ion batteries along with more than double the energy density

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Lithium-sulfur batteries offer a great deal of promise as a next-generation battery technology, with the natural abundance and low cost of sulfur, coupled with the high theoretical energy density of sulfur-based cathodes: 1675 mAh g ?1 Credit: ACS, Lee et al. Click to enlarge. 1 and 2500 Wh kg ?1. 1000 mAh g ?1 —Lee et al.

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