Hierarchical FeCo/C@Ni(OH)2 heterostructures for enhanced oxygen evolution activity
Authors:
- Cong Xie,
- Xiao Zhang,
- Katarzyna Matras-Postolek,
- Ping Yang
Abstract
Layered Ni(OH)2 nanosheets are considered as one of the most promising oxide evolution reaction (OER) catalysts due to its excellent oxidation and reduction reaction performance which has been extensively studied. However, there is a big gap between the Ni(OH)2 nanosheets and noble metal catalysts in terms of the OER activity which is difficult to meet the request of application. Here, a strategy was developed to deposit Ni(OH)2 nanosheets on FeCo/C nanocubes surface to create a hierarchical heterostructure as a new type of non-noble metal catalyst. The initial overpotential of the prepared FeCo/C@Ni(OH)2 catalyst is as low as 212 mV and the Tafel slope is smaller compared with the precursor materials. The composite materials revealed enhanced cycle stability which can maintain more than 90% of initial current density after running for 10 h under 100 mV overpotential. The improvement of OER activity is ascribed to the FeCo/C nanocubes, which can not only improve the charge transport of the material, but also prevent the agglomeration of Ni(OH)2 nanosheets. The exciting features of FeCo/C@Ni(OH)2 nanocomposite open up the possibilities of preparing efficient and stable non-noble metal catalysts for OER electrocatalysts.
- Record ID
- CUTf4464dab609a4e29aee4e7d05804ce5c
- Publication categories
- ;
- Author
- Journal series
- Electrochimica Acta, ISSN 0013-4686, e-ISSN 1873-3859
- Issue year
- 2021
- Vol
- 395
- Pages
- [1-14]
- Article number
- 139194
- Other elements of collation
- fot.; schem.; tab.; wykr.; Bibliografia (na s.) - 13-14; Bibliografia (liczba pozycji) - 47; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 395
- Keywords in English
- prussian blue, Ni(OH)2, hierarchical, oxide evolution reaction
- DOI
- DOI:10.1016/j.electacta.2021.139194 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S0013468621014845 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 100
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTf4464dab609a4e29aee4e7d05804ce5c/
- URN
urn:pkr-prod:CUTf4464dab609a4e29aee4e7d05804ce5c
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.