Boron Nanosheet-Supported Rh Catalysts for Hydrogen Evolution: A New Territory for the Strong Metal-Support Interaction Effect

Nano-Micro Letters

Liang Wang¹  Zeming Wang¹  Xiuzhen Wu¹  Keng Chen¹  Bingjie Hu¹  Zheng Liu²  Minghong Wu³ 

[1] Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University;School of Materials Science and Engineering, Nanyang Technological University;Shanghai Applied Radiation Institute, Shanghai University;

关键词: Boron nanosheets;    Dispersive rhodium nanoparticles;    Electrocatalysis;    Hydrogen evolution reaction;    Strong metal-supported interaction;   

DOI  :  10.1007/s40820-021-00662-y

来源: DOAJ

【 摘 要 】

Abstract High-efficiency electrochemical hydrogen evolution reaction (HER) offers a promising strategy to address energy and environmental crisis. Platinum is the most effective electrocatalyst for the HER. However, challenging scarcity, valuableness, and poor electrochemical stability still hinder its wide application. Here, we designed an outstanding HER electrocatalyst, highly dispersed rhodium (Rh) nanoparticles with an average diameter of only 3 nm supported on boron (B) nanosheets. The HER catalytic activity is even comparable to that of commercial platinum catalysts, with an overpotential of only 66 mV in 0.5 M H2SO4 and 101 mV in 1 M KOH to reach the current density of 10 mA cm−2. Meanwhile, the catalyst exhibited impressive electrochemical durability during long-term electrochemical processes in acidic and alkaline media, even the simulated seawater environment. Theoretical calculations unraveled that the structure–activity relationship between B(104) crystal plane and Rh(111) crystal plane is beneficial to the release of hydrogen, and surface O plays a vital role in the catalysis process. Our work may gain insights into the development of supported metal catalysts with robust catalytic performance through precise engineering of the strong metal-supported interaction effect.

【 授权许可】

Unknown