Preparation of CuO@NiCo2O4 coaxial nanocable heterojunction catalysts and their electrocatalytic performance for oxygen reduction
JIANG Cong
ZHANG Tian-heng
TIAN Jing-hua
YANG Rui-zhi
Abstract：NiCo2O4―wrapped CuO coaxial nanocable catalysts were synthesized via a simple sol―gel method.Scanning electron microscopy (SEM)and X-ray diffraction (XRD)results showed that the morphologies and the structures of the CuO and NiCo2O4remain unchanged after hybrid-ization.The electrocatalytic performances of pure NiCo2O4,pure CuO nanorods and hybrid CuO@NiCo2O4in alkaline solution were studied and compared using a rotating ring disk electrode (RRDE)technique.For the oxygen reduction reaction(ORR),the hybrid CuO@NiCo2O4exhib-ited much higher active than the solo one with long-term stability,characterized with the highest diffusion-limited current density and more positive onset potential,which could be ascribed to the novel hybrid structure of the composited coaxial nanocable catalyst and the synergistic effect be-tween CuO and NiCo2O4.
Keywords：Coaxial nanocableHeterostructureElectro-catalysisOxygen reduction reaction
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 100-106 )