Synthesis and Electrochemical Performance of LiMnxFex-1PO4/C Cathode Material for Lithium Secondary Batteries

被引：3

作者：

Kim, Hyun-Soo ^{[1
]}

Jin, Kyung Min ^{[1
]}

Jin, Bong Soo ^{[1
]}

Kim, Woo-Seong ^{[2
]}

Koo, Hoe-Jin ^{[3
]}

Wang, Guoxiou ^{[4
]}

机构：

[1] Korea Electrotechnol Res Inst, Battery Res Ctr, Changwon Si 641120, Gyeongnam, South Korea

[2] Daejung EM Co, Shiheung Si 429450, Gyeonggi, South Korea

[3] Battery R&D Assoc Korea, Seoul 137894, South Korea

[4] Univ Technol Sydney, Dept Chem & Forens Sci, Sydney, NSW 2007, Australia

来源：

METALS AND MATERIALS INTERNATIONAL | 2011年 / 17卷 / 05期

关键词：

LiMn0.8Fe0.2PO4/C; carbon; coating; surface modification; conductivity; electrochemistry; scanning electron microscopy; transmission electron microscopy; X-ray diffraction;

D O I：

10.1007/s12540-011-1020-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Carbon-coated LiMn0.8Fe0.2PO4/C (C = 5 wt.%, 10 wt.%, 15 wt.%, and 20 wt.%) cathode material is synthesized using a solid-state method. No impurity is found within the synthesized active material, which is confirmed to have an olivine structure with particle sizes in the range of 100 nm to 200 nm. The LiMn0.8Fe0.2PO4/C (C = 10 wt.%) active material shows an outstanding discharge capacity of 121.7 mAh.g(-1), along with a high capacity maintenance rate of 87.9 % at 2 C against the 0.2 C rate. In addition, this sample shows the most outstanding discharge capacity and coulombic efficiency in the cycling performance tests.

引用

页码：817 / 821

页数：5

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