Dynamic modulation of electron redistribution at the heterogeneous interface nickel hydroxides/platinum boosts acidic oxygen reduction reaction

IF 14.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Nature Communications Pub Date : 2025-03-22 DOI:10.1038/s41467-025-58193-8

Meihuan Liu, Hui Su, Xuanzhi Liu, Xiaorong He, Pengfei Tan, Feng Liu, Jun Pan

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Abstract

The interfacial electron interactions in heterogeneous catalysts are critical in determining the adsorption strengths and configurations of reaction intermediates, which are essential for the efficiency of multistep tandem catalytic processes. Amorphous-crystalline (a-c) heterostructures have garnered significant interest due to their unusual atomic arrangements, adaptable electron configurations, and exceptional stability. Here, we introduce a mesoporous a-c heterojunction catalyst featuring enriched amorphous-crystalline Ni(OH)₂/Pt boundaries (ac-Ni(OH)₂@m-Pt), designed for efficient acidic oxygen reduction reaction (ORR). This catalyst enables electron redistribution at the heterogeneous interface, thereby enhancing both catalytic activity and durability. As anticipated, the ac-Ni(OH)₂@m-Pt delivers a high mass activity (MA) of 0.95 A mg_Pt⁻¹ and maintains good durability (89.8% MA retention) over 15000 cycles. Advanced characterization and theoretical calculations reveal that the catalyst’s high performance stems from the dynamic heterogeneous-interface electron redistribution at the a-c interface. This dynamic-cycling electron transfer, driven by the applied potential, promotes O₂ activation and accelerates the protonation of *O intermediate during ORR. This work offers a promising avenue for improving the design of electrocatalysts using a-c interface engineering.

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来源期刊

Nature Communications Biological Science Disciplines-

CiteScore

24.90

自引率

2.40%

发文量

6928

审稿时长

3.7 months

期刊介绍： Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.