Potassium-Oxygen Batteries Based on Potassium Superoxide
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United States of America Patent
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Jan 7, 2016
app pub date -
Jan 23, 2014
filing date -
Jan 23, 2013
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Abstract
Potassium-oxygen (K—O2) batteries based on potassium superoxide (KO2) are provided. The K—O2 batteries can exhibit high specific energy a low discharge/charge potential gap (e.g., a discharge/charge potential gap of less than 50 mV at a current density of 0.16 mA/cm2) without the use of any catalysts. The discharge product of the K—O2 batteries is K—O2, which is both kinetically stable and thermodynamically stable. As a consequence of the stability of the discharge product, the K—O2 batteries can exhibit improved operational stability relative to other metal-air batteries.
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