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Self-supported MoO2-MoO3/Ni2P hybrids as a bifunctional electrocatalyst for energy-saving hydrogen generation via urea–water electrolysis

[Display omitted] •A novel and efficient, MoO2-MoO3/Ni2P nanoflowers electrode was developed.•The MoO2-MoO3/Ni2P/NF electrode exhibits superior activity toward both UOR and HER.•Only a cell voltage of 1.39 V is required to the current density of 100 mA cm−2.•Paves the way for the development of syst...

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Published in:Journal of colloid and interface science 2022-05, Vol.614, p.337-344
Main Authors: Hu, Lei, Jin, Liujun, Zhang, Tingyu, Zhang, Jianhua, He, Jinghui, Chen, Dongyun, Li, Najun, Xu, Qingfeng, Lu, Jianmei
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cited_by cdi_FETCH-LOGICAL-c333t-614d0db60e1eb94a6dd8fd980ff86a1e9211ccc16db03b5687f2b437037eb153
cites cdi_FETCH-LOGICAL-c333t-614d0db60e1eb94a6dd8fd980ff86a1e9211ccc16db03b5687f2b437037eb153
container_end_page 344
container_issue
container_start_page 337
container_title Journal of colloid and interface science
container_volume 614
creator Hu, Lei
Jin, Liujun
Zhang, Tingyu
Zhang, Jianhua
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Chen, Dongyun
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Xu, Qingfeng
Lu, Jianmei
description [Display omitted] •A novel and efficient, MoO2-MoO3/Ni2P nanoflowers electrode was developed.•The MoO2-MoO3/Ni2P/NF electrode exhibits superior activity toward both UOR and HER.•Only a cell voltage of 1.39 V is required to the current density of 100 mA cm−2.•Paves the way for the development of systems for the urea-containing wastewater purification and simultaneous hydrogen generation. The electronic modulation and morphology control of electrocatalysts are effective strategies to improve their catalytic performance. Herein, MoO2-MoO3/Ni2P nanoflowers were fabricated on the skeleton of conductive nickel foam as an electrocatalyst with enhanced performance via a universal hydrothermal and phosphating method. The introduction of P and Mo into the nickel-based catalyst through the co-doping strategy effectively adjusted the electronic structure of the Ni active sites, thereby significantly improving the performance of the catalyst. Particularly, the introduction of Mo allowed adjusting the morphology of the material, thereby increasing the electrochemical active area and promoting the exposure of more active sites. This strategy for improving the electrocatalyst’s performance in urea-assisted water splitting will provide a new concept for the simultaneous mitigation of the energy crisis and environmental contamination.
doi_str_mv 10.1016/j.jcis.2022.01.129
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subjects Electrocatalyst
Electronic modulation
Heteroatom doping
Hydrogen evolution reaction
Morphology
title Self-supported MoO2-MoO3/Ni2P hybrids as a bifunctional electrocatalyst for energy-saving hydrogen generation via urea–water electrolysis
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