Polymer-assisted synthesis of LiNi2/3Mn1/3O2 cathode material with enhanced electrochemical performance

被引：20

作者：

Lu, Yang-Xuan ^{[1
,4
]}

Jiang, Yan ^{[1
,4
]}

Yang, Ze ^{[1
,4
]}

Han, Jian-Tao ^{[2
]}

Huang, Yun-Hui ^{[1
,4
]}

Ma, Jun ^{[3
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Hubei, Peoples R China

[2] Los Alamos Natl Lab, LANSCE Lujan Ctr, Los Alamos, NM 87545 USA

[3] Tongji Univ, Sch Automot Studies, Shanghai 201804, Peoples R China

[4] Minist Educ, Key Lab Adv Battery Mat & Syst, Wuhan 430074, Hubei, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 559卷

关键词：

Layered oxide; Cathode; Polymer assistance; Lithium-ion battery; Electrochemical performance; LITHIUM-ION BATTERIES; HIGH-CAPACITY CATHODE; LAYERED LINI0.5MN0.5O2; HIGH-POWER; TEMPERATURE; CHALLENGES; BEHAVIOR; XPS;

D O I：

10.1016/j.jallcom.2013.01.065

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：

A facile polymer-assisted method is developed to prepare LiNi2/3Mn1/3O2 cathode material with polyethylene glycol (PEG400) as the sacrificial template. The structure, morphology, cationic ordering and oxidation state of transition metal ions have been investigated. With assistance of proper amount of PEG, the obtained sample shows improved cyclic performance and rate capability. Initial discharge capacity of 172 mA h g(-1) at 0.1 C is attained. The improvement in electrochemical performance can be ascribed to the low Li/Ni cation disorder, good crystallization and uniform morphology promoted by PEG assistance. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：203 / 208

页数：6

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