插层(化学)
电化学
材料科学
学位(音乐)
热的
化学工程
无机化学
化学
热力学
电极
物理化学
声学
物理
工程类
作者
S. Sarciaux,Y. Piffard,A. Verbaere,Y. Piffard,Dominique Guyomard
标识
DOI:10.1016/s0378-7753(99)00095-6
摘要
With the use of various electrodeposition conditions (concentration and pH of the bulk MnSO4 solution, temperature, synthetic mode) and thermal treatments, γ-MnO2 materials exhibiting rather different physico-chemical and structural characteristics were prepared. Relationships were established between synthesis conditions and such characteristics, showing that to some extent, these physico-chemical and structural parameters can be tuned. The electrochemical behavior of lithiated phases obtained upon the first Li insertion into these γ-MnO2 materials has been investigated. It is shown that the maximum Li reversible intercalation capacity strongly depends on the structural parameters (concentration of De Wolff defects and degree of microtwinning) of the starting γ-MnO2 samples.
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