Preparation and characterization LiFePO4/C nanowires and their improved performance for lithium-ion batteries

被引：4

作者：

Li, Chunlong ^{[1
]}

Bai, Ningbo ^{[1
]}

Chen, Han ^{[1
]}

Lu, Huayu ^{[1
]}

Xiang, Kaixiong ^{[1
]}

机构：

[1] Hunan Univ Technol, Sch Met Engn, Zhuzhou 412007, Peoples R China

来源：

IONICS | 2015年 / 21卷 / 09期

基金：

美国国家科学基金会;

关键词：

Lithium-ion batteries; Evaporated self-assembly; LiFePO4; Nanowires; Electrochemical performance; ELECTROCHEMICAL PERFORMANCE; CATHODE MATERIAL; COPRECIPITATION; MICROSPHERES; COMPOSITE; ELECTRODE; ACID;

D O I：

10.1007/s11581-015-1427-x

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：

LiFePO4/C nanowires were successfully synthesized via evaporated self-assembly assisted by polyvinyl alcohol at room temperature. The structure, morphology, and composition of the as-prepared products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TG). The experimental results show that LiFePO4/C nanowires are uniform about 50-100 nm in diameter and 1 mu m in length. LiFePO4/C nanowires exhibit excellent electrochemical performance and attain the discharge-specific capacity of 155 mAhg(-1) at 1C rate and 118 mAhg(-1) at 20C rate. The capacity retention is 98 % after 100 cycles at 20C rate.

引用

页码：2465 / 2469

页数：5

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