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Energy Storage

Oxis Energy files for bankruptcy

by Alex Scott
June 26, 2021 | A version of this story appeared in Volume 99, Issue 24
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Oxis Energy, a British developer of a battery featuring a sulfur-based cathode and lithium metal anode, has filed for bankruptcy. Lithium-sulfur batteries have a theoretical energy density of 2,700 Wh/kg—far higher than that of lithium-ion batteries—but their energy density fades after fewer charge-discharge cycles than do lithium-ion batteries. Oxis shareholders include Samsung and the chemical makers Sasol and Umicore.

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