journal article·2022-08-17

Electronegativity Enhanced Strong Metal–Support Interaction in Ru@F–Ni3N for Enhanced Alkaline Hydrogen Evolution

Qiang Fu, Lei Lin, Tao Wu, Qinghua Zhang, Xianjie Wang, Lingling Xu, Jun Zhong, Lin Gu, Zhihua Zhang, Ping Xu, Bo Song

ACS Applied Materials & Interfaces· Volume 14· Issue 32
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Abstract

Precious metals (Pt, Ir, Ru, and so on) and related compounds usually demonstrate superb catalytic activity for electrochemical hydrogen production. However, scarcity and stability are still challenges for hydrogen evolution reaction, even for single-atomic-site electrocatalysts. Herein, a fluorine (F) doping strategy is proposed to enhance the strong metal–support interaction between the F-doped Ni3N support and the loaded ruthenium (Ru) species. Via synergistically modulating both the Ru loading amount and F doping concentration, outstanding HER activity was achieved in Ru@F–Ni3N with an overpotential (η) of 115 mV at 100 mA cm–2, superior to the benchmark Pt/C (η = 201 mV). Density functional theory simulation in combination with X-ray photoelectron spectra and X-ray absorption spectroscopy characterizations convincingly demonstrate that, with the strongest electronegativity, F doping could effectively stabilize Ru atoms doped in the F–Ni3N substrate and simultaneously reduce the H bonding strength, which accelerated the desorption of H2. These findings provide a facile strategy to modulate both catalytic activities and stabilities of heteroatom-loaded catalytic materials.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced Photocatalysis Techniques · Ammonia Synthesis and Nitrogen Reduction

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Physics, Harbin Institute of Technology, Harbin 150001, China

State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Key Laboratory of Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150080, China

Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China

School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, China

MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China

National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, China

Funding

Central University Basic Research Fund of China · Natural Science Foundation of Heilongjiang Province · National Natural Science Foundation of China · Heilongjiang Touyan Innovation Team Program

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