Enhanced enactment of graphene amalgamated sodium cobalt phosphate composite electrode material in sodium-ion battery

A novel cathode material has been synthesized via ball-milling of sodium cobalt phosphate (alpha-NaCoPO4) with two different carbon structures such as graphite and graphene for Sodium-ion battery. The orthorhombic crystal structure is retained for both composites alpha-NaCoPO4/graphite and alpha-NaCoPO4/graphene without any change even after ball-milling. The flake like morphology and distribution of graphene sheets are recognized from scanning electron microscopy images. The crystal structure of alpha-NaCoPO4 and nature of carbon in the ball-milled composites is determined through transmission electron microscopy. The initial discharge capacities of 41 and 92 mAhg(-1) are noticed for alpha-NaCoPO4/graphite and alpha-NaCoPO4/graphene composites respectively, which dictate that the alpha-NaCoPO4/graphene can be promising cathode for sodium-ion battery. (c) 2021 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

Automated summary

In this study, a novel cathode material was synthesized via ball-milling, utilizing sodium cobalt phosphate and two different carbon structures, graphite and graphene, for Sodium-ion battery. The composite alpha-NaCoPO4/graphene showed higher initial discharge capacity compared to alpha-NaCoPO4/graphite, indicating its potential as a promising cathode for sodium-ion battery applications.