Role of 1,3-Propane Sultone and Vinylene Carbonate in Solid Electrolyte Interface Formation and Gas Generation
Role of 1,3-Propane Sultone and Vinylene Carbonate in Solid Electrolyte Interface Formation and Gas Generation
复制标题
DOI：
10.1021/acs.jpcc.5b00072
复制
发表时间：
2015-05
影响因子：
3.7
通讯作者：
Bo Zhang;M. Metzger;S. Solchenbach;Martin Payne;Stefano Meini;H. Gasteiger;A. Garsuch;B. Lucht-
中科院分区：
文献类型：
--
作者：
Bo Zhang;M. Metzger;S. Solchenbach;Martin Payne;Stefano Meini;H. Gasteiger;A. Garsuch;B. Lucht-
制备并研究了含有或不含有 1,3-丙烷磺内酯 (PS) 和碳酸亚乙烯酯 (VC) 的电解质的锂离子纽扣电池。电池的电化学性能与通过傅里叶变换红外和X射线光电子能谱进行的电极异位表面分析以及通过在线电化学质谱（OEMS）进行的原位气体分析相关。结果表明，PS 和 VC 的结合可提高 55 °C 循环时的容量保持率并降低阻抗。非原位表面分析和 OEMS 证实，PS 和 VC 的加入改变了阳极上的还原反应，抑制了乙烯的生成并改变了固体电解质界面的结构。 VC 的掺入会导致 CO2 释放、聚 (VC) 的形成以及乙烯生成的抑制。 PS 的掺入会导致烷基磺酸锂 (RSO2Li) 的生成并抑制乙烯的生成。 PS与VC的结合减少...
Lithium-ion coin cells containing electrolytes with and without 1,3-propane sultone (PS) and vinylene carbonate (VC) were prepared and investigated. The electrochemical performance of the cells is correlated with ex situ surface analysis of the electrodes conducted by Fourier transform infrared and X-ray photoelectron spectroscopies and in situ gas analysis by online electrochemical mass spectrometry (OEMS). The results suggest that incorporation of both PS and VC results in improved capacity retention upon cycling at 55 °C and lower impedance. Ex situ surface analysis and OEMS confirm that incorporation of PS and VC alter the reduction reactions on the anode inhibiting ethylene generation and changing the structure of the solid electrolyte interface. Incorporation of VC results in CO2 evolution, formation of poly(VC), and inhibition of ethylene generation. Incorporation of PS results in generation of lithium alkylsulfonate (RSO2Li) and inhibition of ethylene generation. The combination of PS and VC reduc...