A new type of orthorhombic LiFeO2 with advanced battery performance and its structural change during cycling

被引：49

作者：

Lee, YS

Sato, S

Sun, YK

Kobayakawa, K

Sato, Y

机构：

[1] Kanagawa Univ, Dept Appl Chem, Yokohama, Kanagawa 2218686, Japan

[2] Kanagawa Univ, High Tech Res Ctr, Yokohama, Kanagawa 2218686, Japan

[3] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea

来源：

JOURNAL OF POWER SOURCES | 2003年 / 119卷

关键词：

nano-crystalline; orthorhombic LiFeO2; cycleability; LiFe5O9; phase change;

D O I：

10.1016/S0378-7753(03)00152-6

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：

Nano-crystalline LiFeO2 has been synthesized at low temperature (150 degreesC) using the solid-state method. It was composed of orthorhombic LiFeO2 and a small amount of spinel LiFe5O8 phases. A Li/LiFeO2 cell showed not only a fairly high initial discharge capacity of over 150 mAh/g, but also a good cycle retention rate at room temperature. We first found that the orthorhombic LiFeO2 underwent a structural change to the spinel phase (LiFe5O8) during the charge/discharge process, which resulted in the capacity decline of the Li/LiFeO2 system. (C) 2003 Elsevier Science B.V. All rights reserved.

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页码：285 / 289

页数：5

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