锂(药物)
猝灭(荧光)
材料科学
化学
物理
荧光
医学
量子力学
内分泌学
作者
Zhenqiang Guo,Huicong Yang,Yukun Yan,Pei Tang,Tianyue Wang,Nan Piao,Tianzhao Hu,Ruopian Fang,Guangjian Hu,Shuo Bai,Guangjin Hou,Hui‐Ming Cheng,Feng Li
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2024-08-02
卷期号:: 4233-4239
标识
DOI:10.1021/acsenergylett.4c01833
摘要
In lithium-ion and lithium metal batteries, inevitable H2O molecules limit the electrochemical performance. Rather than confining or removing H2O molecules, it is more efficient to quench their activity and thus avoid side reactions caused by H2O. In this study, 2-fluoropyridine (2-FP) containing strong Lewis base active sites was selected as an electron donor molecule to interact with H2O to quench its activity. The 2-FP causes steric hindrance, which obstructs contact between the H2O and other reagents like PF6–, and the reactivity of H2O is decreased because of the reconstruction of its electron orbital. Consequently, both lithium-ion and lithium-metal cells have a prolonged cycling life, and a stable electrode–electrolyte interface is produced with greatly reduced transition-metal dissolution and negligible dendrite formation.
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