A fast and general approach to produce a carbon coated Janus metal/oxide hybrid for catalytic water splitting

作者：Zhang, Guoge^*; Huang, Xuewang; Ma, Xiao; Liu, Yan; Ying, Yiran; Guo, Xuyun; Fu, Nianqing; Yu, Fei; Wu, Huijun; Zhu, Ye; Huang, Haitao^*

来源：Journal of Materials Chemistry A, 2021, 9(12): 7606-7616.

DOI：10.1039/d0ta12021a

• ALKALINE HYDROGEN EVOLUTION
• NITROGEN-DOPED CARBON
• POROUS CARBON
• EFFICIENT
• ELECTROCATALYSTS
• NI
• GRAPHENE
• NANOPARTICLES
• NANOSHEETS
• ELECTROLYSIS

Designing a carbon coated core@shell structure (M@C) is a popular and effective strategy to boost catalytic performance. However, most synthesis technologies for M@C reported up to now are relatively complicated and time consuming (multiple steps for at least a few hours). Herein, a rapid one-step process (4 min only), plasma electrolytic deposition, was developed to fabricate CoMo/CoMoOx@C with a Janus metal/oxide core in a carbon shell, which realized a significantly enhanced hydrogen evolution reaction (HER). More interestingly, this synthesis method is extendable to many other metals. The resulting material can be easily optimized by tuning the metal/oxide core and/or the carbon shell through a wide range of parameters. NiCoMo/NiCoMoOx@C was better than commercial Pt/C in HER catalysis, and NiFeMo/NiFeMoOx was among the best overall water splitting catalysts reported very recently. This work presents a fast and general technique for the design of electrocatalysts with intriguing properties.

• 单位
  广州大学; 中山大学