X-ray absorption near-edge structure study on positive electrodes of degraded lithium-ion battery

被引：32

作者：

Shikano, Masahiro ^{[1
]}

Kobayashi, Hironori ^{[1
]}

Koike, Shinji ^{[1
]}

Sakaebe, Hikari ^{[1
]}

Saito, Yoshiyasu ^{[2
]}

Hori, Hironobu ^{[1
]}

Kageyama, Hiroyuki ^{[1
]}

Tatsumi, Kuniaki ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Inst Ubiquitous Energy Devices, Osaka 5638577, Japan

[2] Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki 3058568, Japan

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 16期

关键词：

Lithium-ion battery; XANES; Degradation; Positive electrode; POWER FADING MECHANISM; LI; SURFACE; CELLS;

D O I：

10.1016/j.jpowsour.2011.01.042

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：

18650-type cylindrical cells using LiNi1/3Mn1/3Co1/3O2 (NMC) and hard carbon as positive and negative electrode material, respectively, were fabricated and degraded by cycle tests. The capacity of the cells remained more than 95% and 85% after cycle tests at 25 and 50 degrees C, respectively. After the cycle tests. Li-deficient cubic phase was observed on the surface of NMC. This phenomenon should be related to the degradation mechanism of this type of cell. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：6881 / 6883

页数：3

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