High Entropy Intermetallic–Oxide Core–Shell Nanostructure as Superb Oxygen Evolution Reaction Catalyst

Zhaoyi Ding; Juanjuan Bian; Shuo Shuang; Xiaodi Liu; Yuanchao Hu; Chunwen Sun; Yong Yang

doi:10.1002/adsu.201900105

journal article·2020-05

High Entropy Intermetallic–Oxide Core–Shell Nanostructure as Superb Oxygen Evolution Reaction Catalyst

Zhaoyi Ding, Juanjuan Bian, Shuo Shuang, Xiaodi Liu, Yuanchao Hu, Chunwen Sun, Yong Yang

Advanced Sustainable Systems· Volume 4· Issue 5

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Source abstract

Abstract

Abstract Designing active, stable, yet low cost electrocatalysts for the oxygen evolution reaction (OER) is pivotal to the next generation energy storage technology. However, conventional OER catalysts are of low electrochemical efficiency while the state‐of‐the‐art nanoparticle‐based catalysts require mechanical supports, thereby limiting their wide deployment. Here, it is demonstrated that, due to the excellent corrosion resistance of the Fe–Co–Ni–Cr–Nb high entropy intermetallic Laves phase, fabricating a high entropy bulk porous nanostructure is possible by dealloying the corresponding eutectic alloy precursor. As a result, a core–shell nanostructure with amorphous high entropy oxide ultrathin films wrapped around the nanosized intermetallic ligaments is obtained, which together, exhibits an extraordinarily large active surface area, fast dynamics, and superb long‐term durability, outperforming the existing alloy‐ and ceramic‐based OER electrocatalysts. The outcome of the research suggests that the paradigm of “high entropy” design can be used to develop high performance catalytic materials.

Source: crossref · Quality: baseline

Research context

Metals & alloys Ceramics & glasses Nanomaterials Catalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Nanoporous metals and alloys · Catalysis and Hydrodesulfurization Studies

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

Affiliations

Department of Mechanical Engineering College of Engineering City University of Hong Kong Tat Chee Avenue, Kowloon Tong Kowloon Hong Kong SAR China

CAS Center for Excellence in Nanoscience Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 P. R. China

School of Nanoscience and Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China

College of Mechatronics and Control Engineering Shenzhen University Nanhai Avenue 3688 Shenzhen 518060 P. R. China

Department of Mechanical Engineering and Materials Science Yale University New Haven CT 06520 USA

Department of Materials Science and Engineering College of Engineering City University of Hong Kong Tat Chee Avenue, Kowloon Tong Kowloon Hong Kong SAR China

Funding

City University of Hong Kong · National Natural Science Foundation of China · Ministry of Science and Technology of the People's Republic of China

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