ELECTROCHEMICAL STM STUDY ON SURFACE-MORPHOLOGY CHANGE OF HOPG BASAL-PLANE IN AN ORGANIC ELECTROLYTE SOLUTION

被引：24

作者：

INABA, M ^{[1
]}

SIROMA, Z ^{[1
]}

OGUMI, Z ^{[1
]}

ABE, T ^{[1
]}

MIZUTANI, Y ^{[1
]}

ASANO, M ^{[1
]}

机构：

[1] KYOTO UNIV,INST ATOM ENERGY,UJI,KYOTO 611,JAPAN

来源：

CHEMISTRY LETTERS | 1995年 / 08期

关键词：

D O I：

10.1246/cl.1995.661

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To elucidate the mechanism of surface reactions on graphite anodes of lithium-ion secondary batteries, the morphology change of the basal plane of a highly oriented pyrolytic graphite (HOPG) anode in LM LiClO4/ethylene carbonate-diethylcarbonate (1:1 by volume) was observed by electrochemical STM. When the sample potential was stepped to 1.1 V vs. Li/Li+, hill-like structures of ca. 10 Angstrom height appeared on the HOPG surface. The hill-like structure in the vicinity of a step was gradually spread out with time, and a part of it exfoliated. It was considered that the intercalation of solvent is responsible for the formation of the hill-like structure and that this process corresponds to the initial stage of solvent decomposition and subsequent film formation processes.

引用

页码：661 / 662

页数：2

共 10 条

[1] THE CATHODIC DECOMPOSITION OF PROPYLENE CARBONATE IN LITHIUM BATTERIES [J].