Morphological, structural, and electrochemical characteristics of LiNi0.5Mn0.4M0.1O2 (M = Li, Mg, Co, Al)

被引：49
作者：
Li, Decheng
Sasaki, Yuki
Kobayakawa, Koichi
Sato, Yuichi
机构：
[1] Kanagawa Univ, Fac Engn, Dept Appl Chem, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan
[2] Kanagawa Univ, High Tech Res Ctr, Tsurumi Ku, Yokohama, Kanagawa 2300045, Japan
来源：
JOURNAL OF POWER SOURCES | 2006年 / 157卷 / 01期
关键词：
Li-ion battery; cathode material; LiNi0.5Mn0.4M0.1O2; solid-state reaction; electrochemical properties;
D O I：
10.1016/j.jpowsour.2005.08.023
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：
LiNi0.5Mn0.4M0.1O2 (M =Li, Mg, Al, Co) compound was prepared by a solid-state reaction, and its structural, morphological and electrochemical properties were characterized by XRD, SEM, charge-discharge tests and EIS. The impacts of alien ion introduction on the structural, morphological and electrochemical properties of LiNi0.5Mn0.5O2 depend on the dopants. The substitution of Li, Mg, and Co for Mn can enlarge the particle size and improve the crystallinity. LiNi0.5Mn0.4Li0.1O2 and LiNi0.5Mn0.4Co0.1O2 show increased reversible capacities as well as upgraded rate capabilities. LiNi0.5Mn0.4Li0.1O2 exhibits a retentive capacity of about 200 mAh g(-1) at 50 degrees C. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：488 / 493
页数：6
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