Institute of Advanced Materials and Technology;
University of Science and Technology Beijing;
Beijing 100083;
China;
Corrosion-Erosion and Surface Technology Beijing Key Laboratory;
Beijing 100083;
China;
Department of Applied Physics;
Hong Kong Polytechnic University;
Hong Kong;
China;
Department of Chemistry;
Tsinghua University;
Bejing 100084;
China;
Free-standing two-dimensional; Au thin films; Eelectrochemical hydrogen-detaching method; Catalysis;