Synthesis of in situ network-like vapor-grown carbon fiber improved LiFePO4 cathode materials by microwave pyrolysis chemical vapor deposition

被引：11

作者：

Deng, F. ^{[2
]}

Zeng, X. R. ^{[1
,3
]}

Zou, J. Z. ^{[1
,3
]}

Huang, J. F. ^{[3
]}

Xiong, X. B. ^{[1
,3
]}

Li, X. H. ^{[1
,3
]}

机构：

[1] Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen 518060, Peoples R China

[2] NW Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China

[3] Shenzhen Key Lab Special Funct Mat, Shenzhen 518060, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 35期

关键词：

Electrode materials; Gas-solid reactions; Vapor deposition; Microstructure; Scanning electron microscopy; LITHIUM-ION BATTERIES; ELECTROCHEMICAL PROPERTIES; ELECTRODE MATERIALS; COMPOSITE CATHODE; INTERCALATION; PERFORMANCE; PHOSPHATES; TRANSPORT; NANOTUBES; FILMS;

D O I：

10.1016/j.jallcom.2011.06.054

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：

The low electronic conductivity of LiFePO4 currently limits its use in lithium ion batteries. In order to solve the problem, in situ network-like vapor-grown carbon fiber (VGCF) improved LiFePO4 cathode materials have been prepared in one step by microwave pyrolysis chemical vapor deposition. The phase, microstructure and electrochemical performances of the composites were investigated. Compared with the cathodes without in situ VGCF, the initial discharge capacity of the composite electrode increases from 84 mAh g(-1) to 123 mAh g(-1) at 3.0 C rate, and the charge transfer resistance varies from 420 Omega to 75 Omega. The possible reasons of those are proposed. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.

引用

页码：L324 / L327

页数：4

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