Fabrication of nanocage structured based electrocatalyst for oxygen evolution reactions

Ahmed, S, Kazmi, WW, Butt, FN, Irshad, M, Sher, F ORCID: https://orcid.org/0000-0003-2890-5912, Kazmi, SMA, Chaudry, UM, Zeb, H, Jun, T-S and Khan, MK, 2023. Fabrication of nanocage structured based electrocatalyst for oxygen evolution reactions. Materials Letters, 331: 133416. ISSN 0167-577X

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Abstract

The development of efficient, eco-friendly, and inexpensive electrocatalysts has become crucial and significant in water-splitting applications. Herein, we developed a nickel-cobalt nanocage (Ni/Co-NC) electrocatalyst via the solvothermal method which can boost the performances towards oxygen evolution reactions (OER) and hydrogen evolution reactions (HER). The Ni/Co-NC reveals significant performance at an onset potential of 350 mV for the OER at a delivered current density of 10 mA cm−2. The significant amount of oxygen vacancies generated by the addition of nickel in cobalt has been verified by XPS and the nanocage structure revealed by TEM and SEM images helps in effective performance for OER/HER. Furthermore, the synergistic effect between various Ni3+/Ni2+ and Co2+ could optimize the performance resulting in a smaller Tafel slope of 70 mV dec−1 for Ni/Co-NC.

Item Type:	Journal article
Publication Title:	Materials Letters
Creators:	Ahmed, S., Kazmi, W.W., Butt, F.N., Irshad, M., Sher, F., Kazmi, S.M.A., Chaudry, U.M., Zeb, H., Jun, T.-S. and Khan, M.K.
Publisher:	Elsevier BV
Date:	15 January 2023
Volume:	331
ISSN:	0167-577X
Identifiers:	Number Type 10.1016/j.matlet.2022.133416 DOI 1624865 Other
Divisions:	Schools > School of Science and Technology
Record created by:	Laura Ward
Date Added:	05 Dec 2022 11:43
Last Modified:	08 Nov 2023 03:00
URI:	https://irep.ntu.ac.uk/id/eprint/47570

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