NiMoO4–mediated fabrication of Ni-based electrocatalyst for efficient water splitting
Wei-Hao Sun and
Xuan Zhang
Renewable Energy, 2025, vol. 241, issue C
Abstract:
Developing cost-effective and highly efficient transition metal-based electrocatalysts for overall water splitting is a promising strategy for achieving large-scale and renewable hydrogen energy. In this study, NiMoO4 (NMO) flowerlike microspheres were firstly grown on polyester (PET) textiles by simple hydrothermal reaction, then Ni/Ni(OH)2-NNMO and NiOOH/NMO electrocatalysts for hydrogen evolution reaction (HER) as well as oxygen evolution reaction (OER) were subsequently fabricated on NiMoO4 substrates, respectively. The Ni/Ni(OH)2-NNMO was facilely obtained through electrodeposition on NMO surface, and showed an overpotential of 52 mV at 10 mA cm−2 for HER. Simultaneously, the NiOOH/NMO was directly derived from surface oxidation reconstruction of NMO, and an overpotential of 228 mV at 10 mA cm−2 was observed for OER. An efficient water-splitting system was finally constructed based on Ni/Ni(OH)2-NNMO and NiOOH/NMO electrodes with low cell voltage of 1.56 V at a current density of 10 mA cm−2 and exceptional stability.
Keywords: Ni/Ni(OH)2; NiOOH; NiMoO4 microsphere; Overall water splitting; Renewable energy (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:241:y:2025:i:c:s0960148124023802
DOI: 10.1016/j.renene.2024.122312
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