材料期刊网

Amorphous Co-B alloy nanoparticles grown on graphene sheets were synthesized via a chemical reduction approach and successfully used for an application as a pseudocapacitor.This study aims to improve the capacity and cycling stability of amorphous Co-B alloy nanoparticles grown on conductive graphene sheets.The products were characterized by X-ray powder diffraction,scanning electron microscopy,and transmission electron microscopy.As electrode materials for pseudocapacitors,the amorphous Co-B alloy grown on graphene oxide (Co-B@GO) exhibits a high specific capacitance of 460 F g-1,which is nearly 1.5 times greater than that of bare Co-B nanoparticles at 1 A g-k The specific capacitance preserved 84％ of the initial capacitance even after 1000 cycles at a scan rate of 10 m V-1,suggesting its promising potential as pseudocapacitor materials.