Effect of Carbon Coating and Magnesium Doping on Electrochemical Properties of LiFePO4 for Lithium Ion Batteries

被引：5

作者：

Liu, Ying ^{[1
,2
]}

Manuel, James ^{[1
,2
]}

Zhao, Xiaohui ^{[1
,2
]}

Haridas, Anupriya K. ^{[3
,4
]}

Chauhan, Ghanshyam S. ^{[5
]}

Kim, Jae-Kwang ^{[6
]}

Cho, Kwon-Koo ^{[3
,4
]}

Ahn, Hyo-Jun ^{[3
,4
]}

Ahn, Jou-Hyeon ^{[1
,2
,3
,4
]}

机构：

[1] Gyeongsang Natl Univ, Dept Chem Engn, Jinju 52828, South Korea

[2] Gyeongsang Natl Univ, Res Inst Green Energy Convergence Technol, Jinju 52828, South Korea

[3] Gyeongsang Natl Univ, Dept Mat Engn & Convergence Technol, Jinju 52828, South Korea

[4] Gyeongsang Natl Univ, RIGET, Jinju 52828, South Korea

[5] Himachal Pradesh Univ, Dept Chem, Shimla 171005, India

[6] Cheongju Univ, Dept Solar & Energy Engn, Cheongju 28503, South Korea

来源：

SCIENCE OF ADVANCED MATERIALS | 2017年 / 9卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

Carbon Coating; Magnesium Doping; Electrochemical Measurement; Lithium Ion Batteries; CATHODE MATERIALS; PHOSPHO-OLIVINES; PERFORMANCE; COPRECIPITATION; CONDUCTIVITY; ELECTROLYTE;

D O I：

10.1166/sam.2017.2891

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Li1-2xMgxFePO4 (x = 0, 0.03) composites were synthesized by a mechanical activation process. The effect of ball milling time, magnesium doping, and carbon coating on their properties was investigated. Carbon coating on the surface of the particles reduces the difference in the surface area between the undoped and the doped LiFePO4. Magnesium doping invigorates the electronic properties of the carbon coated LiFePO4 as reduced interfacial resistance and higher capacity were obtained after the magnesium doping. The composite with Mg doping and 5 wt.% carbon coating showed a high discharge capacity of 163.1 mAh/g with high cycle stability at 1 C-rate.

引用

页码：1266 / 1271

页数：6

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