FeF3/Ordered Mesoporous Carbon (OMC) Nanocomposites for Lithium Ion Batteries with Enhanced Electrochemical Performance

被引：45

作者：

Jung, Hyeyun ^{[1
]}

Shin, Jihyun ^{[1
]}

Chae, Changju ^{[2
]}

Lee, Jung Kyoo ^{[2
]}

Kim, Jongsik ^{[1
]}

机构：

[1] Dong A Univ, Dept Chem, Pusan 604714, South Korea

[2] Dong A Univ, Dept Chem Engn, Pusan 604714, South Korea

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2013年 / 117卷 / 29期

基金：

新加坡国家研究基金会;

关键词：

METAL FLUORIDE NANOCOMPOSITES; CATHODE MATERIAL; ELECTRODE MATERIALS; IRON FLUORIDE; CAPACITY; FEF3; CHALLENGES; COMPOSITE; ENERGY;

D O I：

10.1021/jp4023162

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：

FeF3 is of great interest as a potential candidate cathode material because of its low cost, abundance, environmental friendliness, and high theoretical capacity of about 237 mAh.g(-1) in the voltage range of 2.0-4.5 V. However, FeF3 has drawbacks of poor cycling stability and rate performance because of its low intrinsic electrical conductivity and slow diffusion of lithium ions. These issues should be improved for the practical application of FeF3 in lithium-ion battery systems. In this study, FeF3/ordered mesoporous carbon (OMC) nanocomposites were synthesized by an incipient-wetness impregnation technique in a facile and scalable method. The tubular shaped OMC was utilized as both a conductive agent and a hard template for the formation of nanosized FeF3 particles. The FeF3/OMC nanocomposites showed enhanced capacity, cycling stability, and rate performance compared to bulk FeF3 in the voltage range of 2.0-4.5 V at room temperature.

引用

页码：14939 / 14946

页数：8

共 32 条

[1] Fluoride based electrode materials for advanced energy storage devices [J].