High C-rate performance of LiFePO4/carbon nanofibers composite cathode for Li-ion batteries

被引：32

作者：

Adepoju, Adewale A. ^{[1
]}

Williams, Quinton L. ^{[1
]}

机构：

[1] Howard Univ, Dept Phys & Astron, Washington, DC 20059 USA

来源：

CURRENT APPLIED PHYSICS | 2020年 / 20卷 / 01期

基金：

美国国家科学基金会;

关键词：

Carbon nanofibers; LiFePO4; Cathode; Li-ion batteries; ELECTROCHEMICAL PERFORMANCE; PHOSPHO-OLIVINES; LITHIUM; CHALLENGES;

D O I：

10.1016/j.cap.2019.09.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Carbon nanofibers (CNFs) were incorporated into LiFePO4 composite cathode through conventional slurry formulation. Pristine LiFePO4 and modified LiFePO4 cathode samples were characterized by scanning electron microscopy, galvanostatic charge/discharge measurements, and cyclic voltammetry. Electrochemical measurements at room temperature showed LiFePO4/CNF composite to exhibit a higher specific discharge capacity of (similar to)150 mAh g(-1) at 0.1C, excellent high rate performance at >5C capability rates, and better cycling stability with 98.4% capacity retention at 5C after 200 cycles. The improved high C-rate performance of the LiFePO4/CNF composite cathode can be attributed to long-range conducive networks formed through bridges created by the CNFs. The enhanced battery performance indicates promise for high-power applications.

引用

页码：1 / 4

页数：4

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