Synthesis and electrochemical properties of layered Li-Ni-Mn-O compounds

被引：74

作者：

Zhang, LQ ^{[1
]}

Noguchi, H ^{[1
]}

Yoshio, M ^{[1
]}

机构：

[1] Saga Univ, Fac Sci & Engn, Dept Appl Chem, Saga 8408502, Japan

来源：

JOURNAL OF POWER SOURCES | 2002年 / 110卷 / 01期

关键词：

layered Li-Ni-Mn-O compounds; solid solutions; phase transitions;

D O I：

10.1016/S0378-7753(02)00169-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An attempt to prepare solid solutions in the system of LiNiO2, LiMnO2 and Li2MnO3 was performed by heating metal acetates. The solid solutions between end members LiNiO2 and Li2MnO3 can be successfully prepared in the overall compositional ranges. Both the structure and capacity were compared based on Rietveld analysis and electrochemical investigation on solid solutions between LiNiO2 and Li2MnO3. The result showed that the cationic disorder as well as capacity was closely related to the ratio of Li, Mn and Ni in formula. The investigation of chronopotentiogram and ex situ XRD on the solid solutions indicated that the complex phase transitions in LiNiO2 during delithiation were strongly suppressed with low Mn content (Mn/(Mn + Ni) ratio was 0.1 or 0.2) and completely suppressed with the ratio more than 0.5. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：57 / 64

页数：8

共 42 条

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