Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction
Dalian Institute of Chemical Physics · Chinese Academy of Sciences
Abstract
Abstract Major challenges encountered when trying to replace precious‐metal‐based electrocatalysts of the hydrogen evolution reaction (HER) in acidic media are related to the low efficiency and stability of non‐precious‐metal compounds. Therefore, new concepts and strategies have to be devised to develop electrocatalysts that are based on earth‐abundant materials. Herein, we report a hierarchical architecture that consists of ultrathin graphene shells (only 1–3 layers) that encapsulate a uniform CoNi nanoalloy to enhance its HER performance in acidic media. The optimized catalyst exhibits high stability and activity with an onset overpotential of almost zero versus the reversible hydrogen electrode (RHE) and…
Citation impact
- FWCI
- 42.91
- Percentile
- 100%
- References
- 44
Authors
4- JDJiao Deng
Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- PRPengju Ren
Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- DDDehui DengCorresponding
Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- XBXinhe BaoCorresponding
Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Topics & keywords
- Overpotential
- Graphene
- Catalysis
- Materials science
- Dopant
- Nanotechnology
- Chemical engineering
- Hydrogen