Anodic Hydrazine Oxidation Assists Energy‐Efficient Hydrogen Evolution over a Bifunctional Cobalt Perselenide Nanosheet Electrode |
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| Authors: | Jun‐Ye Zhang Prof Dr Hongming Wang Yifan Tian Prof Dr Ya Yan Qi Xue Ting He Prof Dr Hongfang Liu Dr Chundong Wang Prof Dr Yu Chen Prof Dr Bao Yu Xia |
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| Institution: | 1. Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, P. R. China;2. Institute for Advanced Study, Nanchang University, Nanchang, P. R. China;3. School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), Wuhan, P. R. China;4. School of Materials Science & Engineering, University of Shanghai for Science and Technology, Shanghai, P. R. China;5. Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (MOE), Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, P. R. China;6. Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, P. R. China |
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| Abstract: | Water electrolysis is a promising source of hydrogen; however, technological challenges remain. Intensive efforts have focused on developing highly efficient and earth‐abundant electrocatalysts for water splitting. An effective strategy is proposed, using a bifunctional tubular cobalt perselenide nanosheet electrode, in which the sluggish oxygen evolution reaction is substituted with anodic hydrazine oxidation so as to assist energy‐efficient hydrogen production. Specifically, this electrode produces a current density of 10 mA cm?2 at ?84 mV for hydrogen evolution and ?17 mV for hydrazine oxidation in 1.0 m KOH and 0.5 m hydrazine electrolyte. An ultralow cell voltage of only 164 mV is required to generate a current density of 10 mA cm?2 for 14 hours of stable water electrolysis. |
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| Keywords: | bifunctional electrocatalysts cobalt perselenides hydrazine oxidation hydrogen evolution reaction |
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