Developing Iron-Nickel Bimetallic Oxides with Nanocage Structures As High-Performance Bifunctional Catalysts via the Ensemble Effect from Nitrogen Sources
- Authors
- Kang, Taeoh; Kim, Kwanwoo; Kim, Jooheon
- Issue Date
- May-2021
- Publisher
- American Chemical Society
- Citation
- Inorganic Chemistry, v.60, no.10, pp 7490 - 7497
- Pages
- 8
- Journal Title
- Inorganic Chemistry
- Volume
- 60
- Number
- 10
- Start Page
- 7490
- End Page
- 7497
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/47755
- DOI
- 10.1021/acs.inorgchem.1c00782
- ISSN
- 0020-1669
1520-510X
- Abstract
- Metal-air batteries will serve as renewable and ecofriendly energy-storage systems in the future because of their high theoretical energy-density performance and unlimited resources, using oxygen as fuel materials compared with commercial lithium-ion batteries. However, the unsuitable inactive reactions at the air-electrode interface (the oxygen reduction reaction and the oxygen evolution reaction) in the metal-air battery are major challenges. In this study, we report nitrogen (N)-doped iron (Fe) and nickel (Ni) bimetallic catalysts with a hollow structure (Fe-Ni nanocage) as outstanding bifunctional catalysts, which have not been reported previously. The open structure in the catalysts simultaneously has an active inner cavity and an outer shell; catalysts have a high active surface area, resulting in remarkable electrochemical performance. Furthermore, the electron transfer phenomenon due to the ensemble effectgenerates a higher catalyst activation. Nitrogen has a higher electronegativity than the metal cations, so doped nitrogen sources draw the electron into iron and nickel cations, and the deprived oxidation state of the metal cations accelerates the electrocatalytic performance. © 2021 American Chemical Society.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Chemical Engineering and Material Science > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/47755)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.