Graphene Nanoplatelet Additives for High C-rate LiFePO4Battery Cathodes

被引：18
作者：
Adepoju, Adewale A. [1 ]
Doumbia, Mohamed [1 ]
Williams, Quinton L. [1 ]
机构：
[1] Howard Univ, Dept Phys & Astron, Washington, DC 20059 USA
来源：
JOM | 2020年 / 72卷 / 09期
基金：
美国国家科学基金会;
关键词：
ENHANCED ELECTROCHEMICAL PERFORMANCE; LIFEPO4; CATHODE; CARBON NANOTUBE; LIFEPO4/GRAPHENE COMPOSITES; LITHIUM; CHALLENGES;
D O I：
10.1007/s11837-020-04224-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Graphene nanoplatelets (GNPs) were introduced as conductive additives in the lithium iron phosphate (LiFePO4) composite cathode material through a facile slurry approach to study the effect on battery performance at high current rates (C-rates). The incorporation of GNPs helps to create a flexible three-dimensional conductive network through a plane-to-point connection with the LiFePO(4)particles. Comparison electrochemical testing showed that the LiFePO4/GNP cathode exhibited a high specific discharge capacity of similar to 153 mAh g(-1)at 0.1C, improved high C-rate performance, and enhanced electrochemical reactivity. The enhanced LiFePO4/GNP battery performance can be attributed to the better electronic transport properties facilitated by the capability of GNP to bridge multiple LFP particles owing to its larger surface area. Our results inform the ongoing effort in finding LiFePO(4)cathodes that can perform at high current rates as the demand increases for lithium-ion battery usage.
引用
收藏
页码：3170 / 3175
页数：6
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