期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 15, 期 26, 页码 11025-11037出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cp51056e
关键词
-
资金
- BASF SE
- Alexander von Humboldt Foundation
The decomposition of lithium peroxide during the charging process of lithium-air batteries is investigated. A novel preparation method for electrodes in the discharged state, i.e., prefilled with Li2O2 using polyethylene oxide as a binder, is presented. The composition and reactivity of Li2O2-prefilled electrodes are examined by thermal analysis coupled with on-line mass spectrometry. Voltage profiles and gas evolution during the charging process of Li2O2-prefilled electrodes in battery cells are correlated with the thermal decomposition process of Li2O2 and its impact on other electrode compounds. It is found that both thermal Li2O2 decomposition and the electrochemical decomposition of Li2O2 during charging enhance the oxidation of the electrolyte, the binder, and/or carbon, which is suggested to be due to the formation of nascent oxygen during Li2O2 decomposition into O-2 and Li2O (thermally) or into O-2 and lithium ions (electrochemically).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据