We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
High Entropy Intermetallic–Oxide Core–Shell Nanostructure as Superb Oxygen Evolution Reaction Catalyst.
- Authors
Ding, Zhaoyi; Bian, Juanjuan; Shuang, Shuo; Liu, Xiaodi; Hu, Yuanchao; Sun, Chunwen; Yang, Yong
- 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.
- Subjects
OXYGEN evolution reactions; ENTROPY; EUTECTIC alloys; NANOSTRUCTURES; THIN films; OXIDE coating
- Publication
Advanced Sustainable Systems, 2020, Vol 4, Issue 5, p1
- ISSN
2366-7486
- Publication type
Article
- DOI
10.1002/adsu.201900105