Authors
Yating Liu, Na Liu, Hao Zhou, Yixing Luo, Zhang-Hui Lu
Published in
Small (Weinheim an der Bergstrasse, Germany). Nov 13, 2026. Epub Nov 13, 2026.
Abstract
Hydrazine borane (N2H4BH3) oxidation reaction (HBOR) has emerged as an encouraging anodic reaction for direct liquid fuel cells and water electrolysis, attributed to the small theoretical potential (-0.40 V vs RHE) and highly efficient 10-electron process. In this study, fluorine-doped NiO/Ni@C nanorods integrated on nickel foam (F-NiO/Ni@C/NF) were fabricated for the HBOR and the hydrogen evolution reaction (HER). Attributed to the hydrophilic surface and electron-deficient Ni active sites induced by F-doping, the F-NiO/Ni@C/NF demonstrated outstanding performance for the HBOR (E100mA cm -2 = -0.143 V vs RHE) and the HER (E10mA cm -2 = -0.021 V vs RHE). Notably, the operating voltage of the F-NiO/Ni@C/NF based novel HBOR||HER electrolyzer (E10mA cm -2 = 0.0097 ± 0.0025 V, n = 3) is 1.52 V smaller than the conventional OER||HER electrolyzer (E10mA cm -2 = 1.53 V) for H2 production. Moreover, F-NiO/Ni@C/NF based direct hydrazine borane fuel cell (DHBFC) realized an open-circuit voltage of 1.0 V and a peak power density of 145 mW cm-2. The efficient DHBFC successfully drove the HBOR||HER system for self-sustaining H2 production (9.8 mol h-1 m-2). The study not only proposes the novel energy-saving HBOR||HER electrolyzer for H2 production, but also offers a promising F-doping strategy for developing advanced Ni-based materials.
PMID:
43031280
Bibliographic data and abstract were imported from PubMed on 14 Nov 2026.
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