Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/169002
Title: Dual-metal hydroxide@oxide heterojunction catalyst constructed via corrosion engineering for large-current oxygen evolution reaction
Authors: Li, Zhong
Zhang, Xinglin
Zhang, Zheye
Chen, Peng
Zhang, Yizhou
Dong, Xiaochen
Keywords: Science::Chemistry
Issue Date: 2023
Source: Li, Z., Zhang, X., Zhang, Z., Chen, P., Zhang, Y. & Dong, X. (2023). Dual-metal hydroxide@oxide heterojunction catalyst constructed via corrosion engineering for large-current oxygen evolution reaction. Applied Catalysis B: Environmental, 325, 122311-. https://dx.doi.org/10.1016/j.apcatb.2022.122311
Journal: Applied Catalysis B: Environmental 
Abstract: Current OER electrocatalysts are hardly applicable for industrial use, which demands high current density (≥ 1000 mA cm-2) at low overpotential (≤ 300 mV) with long-term stability (≥ 100 h). Herein self-supported heterojunction catalyst, NiCo-OH@NixFeyO4 on Fe foam (FF), is in situ synthesized using two-step corrosion engineering. It only requires an overpotential 275 mV to drive the current density of 1000 mA cm-2 with good long-term stability. Theoretical calculations reveal that such good performance is attributable to electron transfer from NiCo-OH to NixFeyO4 which weakens the adsorption energy of reaction intermediate (OOH*) to promote the release of O2 and lowers the free energy barriers for the reaction. Furthermore, a water splitting cell with NiCo-OH@NixFeyO4/FF as anode and CoP@FeP/FF as cathode demonstrates its potential for industrial application. The study presents a general strategy for in situ synthesis of heterojunction catalysts on metal foams using controlled corrosion engineering for various catalytic applications.
URI: https://hdl.handle.net/10356/169002
ISSN: 0926-3373
DOI: 10.1016/j.apcatb.2022.122311
Schools: School of Chemistry, Chemical Engineering and Biotechnology 
Rights: © 2022 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CCEB Journal Articles

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