Abstract
Ni2+/Cu2+/SO42−/polyvinyl alcohol precursor fibers with uniform diameters were prepared through electrospinning. Nickel-based composite nanoalloys containing Ni, Cu, and S were prepared through heat treatment in an Ar atmosphere. The experimental results show that the main components of the prepared nanoalloys are NiCu, Ni3S2, Ni, and C. The nanoalloys exhibit fine grain sizes about 200–500 nm, which can increase with increasing heat treatment temperature. Electrochemical test results show that the nickel sulfide-modified NiCu nanoalloy composites exhibit excellent oxygen evolution reaction properties, and the oxygen evolution reaction properties gradually improve with the increasing heat treatment temperature. The sample prepared at 1 000 °C for 40 min show a low overpotential of 423 mV and a small Tafel slope of 134 mV·dec−1 at a current density of 10 mA·cm−2.
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Funded by the Doctoral Fund of Chengdu University (No.2081919131) and the Sichuan Science and Technology Program (No.2023YFG0229)
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Li, T., Ling, S., Zhong, S. et al. Nickel Sulfide Modified NiCu Nanoalloy with Excellent Oxygen Evolution Reaction Properties Prepared through Electrospinning and Heat Treatment. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 39, 320–326 (2024). https://doi.org/10.1007/s11595-024-2886-6
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DOI: https://doi.org/10.1007/s11595-024-2886-6