Understanding Moisture and Carbon Dioxide Involved Interfacial Reactions on Electrochemical Performance of Lithium-Air Batteries Catalyzed by Gold/Manganese-Dioxide.
作者： Guoqing Wang , Liliang Huang , Shuangyu Liu , Jian Xie , Shichao Zhang
关键词:
摘要: Lithium–air (Li–air) battery works essentially based on the interfacial reaction of 2Li + O2 ↔ Li2O2 catalyst/oxygen-gas/electrolyte triphase interface. Operation Li–air batteries in ambient air still remains a great challenge despite recent development, because some side reactions related to moisture (H2O) and carbon dioxide (CO2) will occur interface with formation inert byproducts surface catalyst. In this work, we investigated effect H2O CO2 electrochemical performance evaluate practical operation air. The use highly efficient gold/δ-manganese-dioxide (Au/δ-MnO2) catalyst helps understand intrinsic mechanism effect. We found that has more detrimental influence than when operated simulated dry can sustain stable cycling up 200 cycles at 400 mA g–1 relatively low polarization...
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