In-situ One-pot Preparation of LiFePO4/Carbon-Nanofibers Composites and Their Electrochemical Performance

被引：20

作者：

Zhang, Jiaohui ^{[1
]}

Xie, Jian ^{[1
]}

Wu, Chunyang ^{[1
]}

Cao, Gaoshao ^{[1
]}

Zhao, Xinbing ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2011年 / 27卷 / 11期

关键词：

LiFePO4/carbon-nanofibers; In-situ catalytic growth; 3D conductive network; Electrochernical performance; LITHIUM-ION BATTERIES; CARBON-BLACK DISTRIBUTION; POSITIVE-ELECTRODE; CATHODE MATERIALS; PHOSPHO-OLIVINES; ROOM-TEMPERATURE; LIFEPO4; NANOTUBES; ADDITIVES;

D O I：

10.1016/S1005-0302(11)60177-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel in-situ route was employed to synthesize LiFePO4/carbon-nanofibers (CNFs) composites. The route combined high-temperature solid phase reaction with chemical vapor deposition (CVD) using Fe2O3 and LiH2PO4 as the precursors for LiFePO4 growth and acetylene (C2H2) as the carbon source for CNFs growth. The composites were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) specific surface area, field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). The electrochemical performance of the composites was studied by galvanostatic cycling and cyclic voltammetry (CV). The results showed that the in-situ CNFs growth could be realized by the catalytic effect of the Fe2O3 precursor. The sample after 80 min CVD reaction showed the best electrochemical performance, indicating a promising application in high-power Li-ion batteries.

引用

页码：1001 / 1005

页数：5

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