材料科学
单线态氧
电池(电)
储能
氧化还原
分解
氧气
光化学
化学工程
纳米技术
化学
功率(物理)
有机化学
热力学
物理
工程类
冶金
作者
Deqing Cao,Xiaojing Liu,Xingxing Yuan,Fengjiao Yu,Yuhui Chen
标识
DOI:10.1021/acsami.1c09688
摘要
Rechargeable Li–CO2 batteries as a novel system developed in recent years directly use CO2 as the reactant, which enables deeper penetration of energy storage and CO2 utilization. The Li–CO2 battery system, however, is at an early stage, and many challenges remained to be overcome urgently, especially the problem of high over-potential during the charging process. Here, we report a redox mediator, phenoxathiin, to assist the decomposition of Li2CO3 during the charging process, which effectively reduces the over-potential and improves the cycling performance of the battery. Furthermore, we detect the presence of singlet oxygen during the oxidation of Li2CO3 by phenoxathiin, which reveals more of the underlying science of the reaction mechanism of the Li–CO2 battery.
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