In Situ AFM Imaging of Solid Electrolyte Interfaces on HOPG with Ethylene Carbonate and Fluoroethylene Carbonate-Based Electrolytes.
In Situ AFM Imaging of Solid Electrolyte Interfaces on HOPG with Ethylene Carbonate and Fluoroethylene Carbonate-Based Electrolytes.
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DOI：
10.1021/acsami.5b08238
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发表时间：
2015-11
影响因子：
9.5
通讯作者：
Cai Shen;Shuwei Wang;Yang Jin;W. Han
中科院分区：
文献类型：
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作者：
Cai Shen;Shuwei Wang;Yang Jin;W. Han
固体电解质界面相的化学和形态结构对锂离子电池的循环性能和安全性起着至关重要的作用。由于SEI膜的复杂性和缺乏有效的原位表征技术，目前对SEI膜的研究还相当有限。在这里，我们提出了实时的意见，SEI形态演变的电化学原子力显微镜（EC-AFM）。补充的非原位XPS分析，从碳酸亚乙酯（EC）和氟代碳酸亚乙酯（FEC）为基础的电解质在第一次锂化/脱锂循环的HOPG电极表面上的SEI形成的根本差异被揭示。
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.