Статья

Tailoring Nanocrystalline/Amorphous Interfaces to Enhance Oxygen Evolution Reaction Performance for FeNi‐Based Alloy Fibers

Bo LiSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaSida JiangNational Key Laboratory of Space Environment and Matter Behaviors Harbin Institute of Technology Harbin 150001 ChinaQiang FuSchool of Physics Harbin Institute of Technology Harbin 150001 ChinaRan WangNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150001 ChinaWeizhi XuSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaJunxiang ChenState Key Laboratory of Structural Chemistry, and Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen Energy Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaChen LiuNational Key Laboratory of Space Environment and Matter Behaviors Harbin Institute of Technology Harbin 150001 ChinaPing XuSchool of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 ChinaXianjie WangSchool of Physics Harbin Institute of Technology Harbin 150001 ChinaJianhua LiBeijing Engineering Research Center of Detection and Application for Weak Magnetic Field Department of Physics University of Science and Technology Beijing Beijing 100083 ChinaHongbo FanNational Key Laboratory of Space Environment and Matter Behaviors Harbin Institute of Technology Harbin 150001 ChinaJuntao HuoKey Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 ChinaJianfei SunSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaZhiliang NingSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaBo SongNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150001 China

2024en

ABI

Аннотация

Abstract Efficient oxygen evolution reaction (OER) electrocatalysts play a pivotal role in water electrolysis, notably for industrial high current densities (>1000 mA cm −2 ). Crystalline/amorphous heterostructure interfaces have proven to be advantageous for enhancing the OER activities of electrocatalytic materials. However, the constructing and tailoring for crystalline/amorphous interfaces still remain a great challenge due to the destruction of active substrates by intricate post‐treatment. Here, a strategy to tailor nanocrystalline/amorphous (N/A) interface and optimize the electrocatalytic performance of as‐cast N/A alloys by adjusting the size of nanocrystals is proposed. The N/A alloy fibers obtained based on this strategy exhibit superior OER performance with an overpotential of 227 mV (@10 mA cm −2 ), maintaining stability for over 1000, 600, and 240 h under high current densities of 500, 1000, and 1800 mA cm −2 , respectively. Theoretical calculations and material characterizations reveal that N/A interfaces, facilitated by appropriately sized nanocrystals possessing a loose atomic arrangement, favorable surface electronic structure, advantageous local coordination, and optimal O‐contained intermediate adsorption, can yield abundant active sites without compromising stability. This study not only provides a deeper understanding of the tailoring mechanism of N/A interfaces but also offers a new design perspective for the development of cost‐effective, industrial‐grade electrocatalysts.

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Идентификаторы

DOI: 10.1002/adfm.202413088

Цитирования и источники

Цитирований: 4Использованных источников: 0

Показатели — AkademScholar