Co-doped Ni3S2 nanosheet array: A high-efficiency electrocatalyst for alkaline seawater oxidation
Meng Yue(Shandong Normal University), Xun He(University of Electronic Science and Technology of China), Shengjun Sun(Shandong Normal University), Yuntong Sun(Shandong Normal University), Mohamed S. Hamdy(King Khalid University), Mhamed Benaissa(University of Ha'il), Alsamani A. M. Salih(University of Ha'il), Jun Liu(Sichuan University), Xuping Sun(University of Electronic Science and Technology of China)
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Abstract
Developing efficient and durable oxygen evolution reaction (OER) catalysts holds great promise for green hydrogen production via seawater electrolysis, but remains a challenge. Herein, we report a Co-doped Ni3S2 nanosheet array on Ni foam (Co-Ni3S2/NF) as a high-efficiency OER electrocatalyst for seawater. In alkaline conditions, Co-Ni3S2/NF requires an overpotential of only 368 mV to drive 100 mA·cm−2, superior to Ni3S2/NF (385 mV). Besides, it exhibits at least 50-h continuous electrolysis.
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