Highly-dispersed 2D NiFeP/CoP heterojunction trifunctional catalyst for efficient electrolysis of water and urea.

Autor: Li GL; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, PR China; School of Chemical Engineering, Dalian University of Technology, Panjin 124221, PR China. Electronic address: guanglanli@dlut.edu.cn., Miao YY; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, PR China; School of Chemical Engineering, Dalian University of Technology, Panjin 124221, PR China., Deng F; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, PR China; School of Chemical Engineering, Dalian University of Technology, Panjin 124221, PR China., Wang S; Leicester International Institute, Dalian University of Technology, Panjin 124221, PR China., Wang RX; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, PR China; School of Chemical Engineering, Dalian University of Technology, Panjin 124221, PR China., Lu WH; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, PR China; School of Chemical Engineering, Dalian University of Technology, Panjin 124221, PR China., Chen RL; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, PR China; School of Chemical Engineering, Dalian University of Technology, Panjin 124221, PR China.
Jazyk: angličtina
Zdroj: Journal of colloid and interface science [J Colloid Interface Sci] 2024 Aug; Vol. 667, pp. 543-552. Date of Electronic Publication: 2024 Apr 10.
DOI: 10.1016/j.jcis.2024.04.059
Abstrakt: The electrocatalytic production of "green hydrogen", such as through the electrolysis of water or urea has been vigorously advocated to alleviate the energy crisis. However, their electrode reactions including oxygen evolution reaction (OER), urea oxidation reaction (UOR), and hydrogen evolution reaction (HER) all suffer from sluggish kinetics, which urgently need catalysts to accelerate the processes. Herein, we design and prepare an OER/UOR/HER trifunctional catalyst by transforming the homemade CoO nanorod into a two-dimensional (2D) ultrathin heterojunction nickel-iron-cobalt hybrid phosphides nanosheet (NiFeP/CoP) via a hydrothermal-phosphorization method. Consequently, a strong electronic interaction was found among the Ni 2 P/FeP 4 /CoP heterogeneous interfaces, which regulates the electronic structure. Besides the high mass transfer property of 2D nanosheet, Ni 2 P/FeP 4 /CoP displays improved OER/UOR/HER performance. At 10 mA cm - 2 , the OER overpotential reaches 274 mV in 1.0 M KOH, and the potential of UOR is only 1.389 V in 1.0 M KOH and 0.33 M urea. More strikingly, the two-electrode systems for electrolysis water and urea-assisted electrolysis water assembled by NiFeP/CoP could maintain long-term stability for 35 h and 12 h, respectively. This work may help to pave the way for upcoming research horizons of multifunctional electrocatalysts.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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