▎ 摘　　要

The beta-nickel hydroxide/reduced graphene oxide (beta-Ni(OH)(2)/RGO) nanocomposites were successfully synthesized by the microwave-assisted method. The as-obtained samples are composed of beta-Ni(OH)(2) nanoplates deposited homogeneously on the surfaces of the RGO layer. The discharge capacity of the beta-Ni(OH)(2)/RGO composite decreases from 316.3 to 259.9 mAh/g at the discharge rate from 0.2 to 10C, and the capacity decreases slightly by 17.8%. The excellent capacity and rate capability are assigned to the well-defined nanocrystallinity of the disorder hexagonal beta-Ni(OH)(2) nanoplates growing and anchoring on the surface of the RGO layer with the most numerous of available active sites, which provide more comfort spaces for protons and ions. The superior capacity of pseudocapacitive beta-Ni(OH)(2) and good conductivity of RGO make the beta-Ni(OH)(2)/RGO composites a promising battery-type material for high-performance alkaline rechargeable batteries. Published by AIP Publishing.