In Situ AFM Imaging of Solid Electrolyte Interfaces on HOPG with Ethylene Carbonate and Fluoroethylene Carbonate-Based Electrolytes.
Chemical and morphological structure of solid electrolyte interphase (SEI) plays a vital role in lithium-ion battery (LIB), especially for its cyclability and safety. To date, research on SEI is quite limited because of the complexity of SEI and lack of effective in situ characterization techniques. Here, we present real-time views of SEI morphological evolution using electrochemical atomic force microscopy (EC-AFM). Complemented by an ex situ XPS analysis, fundamental differences of SEI formation from ethylene carbonate (EC) and fluoroethylene carbonate (FEC)-based electrolytes during first lithiation/delithiation cycle on HOPG electrode surface were revealed.
Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan Road, Zhenhai District, Ningbo, Zhejiang China.
Cai
C
Shen
Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan Road, Zhenhai District, Ningbo, Zhejiang China.|School of Materials Science and Engineering, Shanghai University , Shanghai, 200072.
Shuwei
S
Wang
Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan Road, Zhenhai District, Ningbo, Zhejiang China.|Nano Science and Technology Institute, University of Science and Technology of China , Suzhou, 215123.
Yan
Y
Jin
Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan Road, Zhenhai District, Ningbo, Zhejiang China.
Wei-Qiang
WQ
Han
atomic force microscopy; electrochemistry; electrolyte; lithium-ion battery; solid electrolyte interfaces