Solid-statesynthesisofLi[Li0.2Mn0.56Ni0.16Co0.08]O2cathodematerialsforlithium-ionbatteries

被引：1

作者：

Wenjuan Hao ^{[1
,2
]}

Hanhui Zhan ^{[1
]}

Han Chen ^{[2
]}

Yanhong Wang ^{[2
]}

Qiangqiang Tan ^{[2
]}

Fabing Su ^{[2
]}

机构：

[1] School of Environment Science and Spatial InformaticsChina University of Mining and Technology

[2] State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences

来源：

Particuology | 2014年 / 15卷 / 04期

关键词：

Lithium-ion batteries; Cathode material; Solid-state synthesis; Lithium-rich material; Electrochemical properties;

D O I：

暂无

中图分类号：

TQ131.11 []; TM912 [蓄电池];

学科分类号：

0817 ; 0808 ;

摘要：

Layered Li|Li0.2Mn0.56Ni0.16Co_(0.08]O2 cathode materials were synthesized via a solid-state reaction for Liion batteries,in which lithium hydroxide monohydrate,manganese dioxide,nickel monoxide,and cobalt monoxide were employed as metal precursors.To uncover the relationship between the structure and electrochemical properties of the materials,synthesis conditions such as calcination temperature and time as well as quenching methods were investigated.For the synthesized Li[Li0.2Mn0.56Ni0.16Co0.08]O2materials,the metal components were found to be in the form of Mn4+,Ni2+,and Co3+,and their molar ratio was in good agreement with stoichiometric ratio of 0.56:0.16:0.08.Among them,the one synthesized at 800 C for 12 h and subsequently quenched in air showed the best electrochemical performances,which had an initial discharge specific capacity and coulombic efficiency of 265.6 mAh/g and 84.0%,respectively,and when cycled at 0.5,1,and 2C,the corresponding discharge specific capacities were 237.3,212.6.and 178.6 mAh/g,respectively.After recovered to 0.1 C rate,the discharge specific capacity became259.5 mAh/g and the capacity loss was only 2.3% of the initial value at 0.1 C.This work suggests that the solid-state synthesis route is easy for preparing high performance Li[Li0.2Mn0.56Ni0.16Co0.08]O2 cathode materials for Li-ion batteries.

引用

页码：18 / 26

页数：9

共 17 条

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