Changes in electronic structure by Li ion deintercalation in LiNiO2 from nickel L-edge and OK-edge XANES

被引：80

作者：

Uchimoto, Y ^{[1
]}

Sawada, H ^{[1
]}

Yao, T ^{[1
]}

机构：

[1] Kyoto Univ, Dept Fundamental Energy Sci, Grad Sch Energy Sci, Sakyo Ku, Kyoto 6068501, Japan

来源：

JOURNAL OF POWER SOURCES | 2001年 / 97-8卷

关键词：

nickel L-edge; OK-edge LiNiO2;

D O I：

10.1016/S0378-7753(01)00624-3

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：

Change in electronic structure by lithium ion deintercalation in LiNiO2 was investigated by Ni L-edge and O K-edge X-ray absorption near edge structure (XANES). The Ni Ledge XANES for LiNiO2 indicated the Ni occurs in LiNiO2 as Ni2+ ions. The Ni L-edge XANES: for LixNiO2 showed no chemical shift to indicate that the Ni ion in LixNiO2 is still Ni2+, even at low x value. The O K-edge XANES for LixNiO2 also indicated that the holes compensating the lithium ion deintercalation are located primarily in oxygen 2p states rather than in Ni 3d states. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：326 / 327

页数：2

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