电化学
堆积
锰
锂(药物)
阳离子聚合
材料科学
溶胶凝胶
三角晶系
化学工程
无机化学
化学
结晶学
晶体结构
纳米技术
有机化学
高分子化学
电极
物理化学
冶金
内分泌学
工程类
医学
作者
Philippe Le Goff,Noël Baffier,S. Bach,Jean‐Pierre Pereira‐Ramos
摘要
Specific structural, physical and electrochemical features of layered manganese dioxides either containing or not containing sodium, are examined and discussed in relation to their synthesis route: classical (precipitation reactions) and sol–gel. Classical-route compounds give rise to poor electrochemical behaviour, whereas sol–gel-route compounds are among the most promising rechargeable manganese dioxides for lithium batteries. These results are related to the type of symmetry, which results from stacking of the layers, and to the nature of the host site for the interlamellar cationic species. It is shown that the best conditions for lithium electrochemical insertion correspond to the initial existence of a hexagonal structure with trigonal prismatic sites.
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