Amorphous Cobalt Boron Alloy@Graphene Oxide Nanocomposites for Pseudocapacitor Applications

作者：Zhang, Wei; Du, Xiaoli; Tan, Yueyue; Hu, Jinbo; Li, Zhen; Tang, Bohejin^*

来源：Journal of Materials Science & Technology, 2017, 33(5): 438-443.

DOI：10.1016/j.jmst.2016.06.012

• Pseudocapacitor
• Electrode
• Cobalt-boron alloy
• Amorphous alloy
• Graphene oxide

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-1. 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.

• 出版日期2017-5
• 单位上海工程技术大学