▎ 摘　　要

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.