Pure tetravalent nickel in γ-type nickel oxyhydroxide as secondary battery electrode

被引：4

作者：

Han, KS

Yoshimura, M

Yoon, JB

Choy, JH

Park, KJ

机构：

[1] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 226, Japan

[2] Seoul Natl Univ, Coll Nat Sci, Ctr Mol Catalysis, Dept Chem, Seoul 151742, South Korea

[3] Natl Inst Technol & Qual, Inorgan Chem Div, Kwacheon 427010, South Korea

来源：

JOURNAL OF MATERIALS RESEARCH | 1998年 / 13卷 / 04期

关键词：

D O I：

10.1557/JMR.1998.0118

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pure tetravalent nickel in gamma-type cobalt substituted nickel oxyhydroxide, Ni0.70Co0.30O2K0.30(H2O)(0.42), could be obtained by the "chimie douce" reaction. The presence of tetravalent nickel is confirmed by comparing the Ni It-edge XANES spectrum of the sample with those of reference compounds having various nickel valency and similar layer structure. The Co K-edge XANES spectrum indicates that the trivalent cobalt remains unchanged regardless of the nickel valency. The structural modification during chimie douce reaction observed from XRD patterns and the result of iodometric titration are consistent with the Ni and Co It-edge XANES data.

引用

页码：880 / 882

页数：3

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