Engineering Amorphous/Crystalline Rod-like Core–Shell Electrocatalysts for Overall Water Splitting
Source abstract
Abstract
The design of bifunctional electrocatalysts for hydrogen and oxygen evolution reactions delivering excellent catalytic activity and stability is highly desirable, yet challenged. Herein, we report an amorphous RuO2-encapsulated crystalline Ni0.85Se nanorod structure (termed as a/c-RuO2/Ni0.85Se) for enhanced HER and OER activities. The as-prepared a/c-RuO2/Ni0.85Se nanorods not only demonstrate splendid HER activity (58 mV@10 mA cm–2 vs RHE), OER activity (233 mV@10 mA cm–2 vs RHE), and electrolyzer activity (1.488 V@10 mA cm–2 vs RHE for overall water splitting) but also exhibit long-term stability with negligible performance decay after 50 h continuous test for overall water splitting. In addition, the variation of the d-band center (from the perspective of bonding and antibonding states) is unveiled theoretically by density functional theory calculations upon amorphous RuO2 layers coupling to clarify the increased hydrogen species adsorption for HER activity enhancement. This work represents a new pathway for the fabrication of bifunctional electrocatalysts toward green hydrogen generation.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Optics Valley Laboratory, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
The Chinese University of Hong Kong, Shenzhen, Shenzhen, Guangdong 518172, P. R. China
Department of Physics, College of Science, Shihezi University, Shihezi 832003, P. R. China
College of Chemistry and Chemical Engineering, Tarim University, Alaer 843300, P. R. China
Advanced Energy Storage Technology Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, P. R. China
Funding
Shenzhen Fundamental Research Program · National Natural Science Foundation of China · Key Research and Development Program of Hubei · Bintuan Science and Technology Program · Guangdong Basic and Applied Basic Research Foundation
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