Graphene Nanoplatelet Additives for High C-rate LiFePO4 Battery Cathodes

Graphene nanoplatelets (GNPs) were introduced as conductive additives in the lithium iron phosphate (LiFePO 4 ) 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...

Full description

Saved in:
Bibliographic Details
Published in:JOM (1989) 2020-09, Vol.72 (9), p.3170-3175
Main Authors: Adepoju, Adewale A., Doumbia, Mohamed, Williams, Quinton L.
Format: Article
Language:English
Subjects:
Additives
Carbon black
Carbon fibers
Cathodes
Chemistry/Food Science
Climate change
Composite materials
Earth Sciences
Electric vehicles
Electrode materials
Electrodes
Electron transport
Electrons
Energy
Engineering
Environment
Graphene
High current
Lithium
Lithium-ion batteries
Phase transitions
Physics
Quantum Materials for Energy-Efficient Computing
R&D
Rechargeable batteries
Research & development
Transport properties
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Graphene nanoplatelets (GNPs) were introduced as conductive additives in the lithium iron phosphate (LiFePO 4 ) 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 LiFePO 4 /GNP cathode exhibited a high specific discharge capacity of ~ 153 mAh g −1 at 0.1C, improved high C-rate performance, and enhanced electrochemical reactivity. The enhanced LiFePO 4 /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.
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-020-04224-2