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journal article·2025-03Open access

Unveiling the Dual Active Sites of Ni/Co(OH) 2 ‐Ru Heterointerface for Robust Electrocatalytic Alkaline Seawater Splitting

Xinhui Yu, Wei Jiang, Yuanyuan Wu, Xianyu Chu, Bo Liu, Shi Zhou, Chunbo Liu, Guangbo Che, Guojie Liu

Small· Volume 21· Issue 9
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Abstract

Abstract Constructing bifunctional electrocatalysts through the synergistic effect of diverse metal sites is crucial for achieving high‐efficiency and steady overall water splitting. Herein, a “dual‐HER/OER‐sites‐in‐one” strategy is proposed to regulate dominant active sites, wherein Ni/Co(OH) 2 ‐Ru heterogeneous catalysts formed on nickel foam (NF) demonstrate remarkable catalytic activity for oxygen evolution reaction (OER) as well as hydrogen evolution reaction (HER). Meanwhile, the potentials@10 mA cm −2 of Ni/Co(OH) 2 ‐Ru@NF for overall alkaline water and seawater splitting are only 1.36 and 1.41 V, respectively, surpassing those of commercial RuO 2 @NF and Pt/C@NF. The Ru site is identified as the primary active site for HER by density functional theory (DFT) calculations, while the Co(OH) 2 site displays the minimal rate‐determining step energy barrier (RDS) and functions as the main active site for OER. This study offers novel perspectives on the rational utilization of diverse metal species’ catalytic capabilities for developing dual active sites multifunctional electrocatalysts.
Source: crossref · Quality: baseline

Research context

Catalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Electrochemical Analysis and Applications · Advanced battery technologies research

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

Affiliations

Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University) Ministry of Education Changchun 130103 P. R. China

Jilin Joint Technology Innovation Laboratory of Developing and Utilizing Materials of Reducing Pollution and Carbon Emissions College of Engineering Jilin Normal University Siping 136000 P. R. China

The Joint Laboratory of Intelligent Manufacturing of Energy and Environmental Materials Jilin Normal University Siping 136000 P. R. China

College of Chemistry Baicheng Normal University Baicheng 137000 P. R. China

Department of Chemistry School of Forensic Medicine China Medical University Shenyang 110122 P. R. China

Funding

Jilin Province Development and Reform Commission · National Natural Science Foundation of China · Natural Science Foundation of Jilin Province

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