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Facile one-pot synthesis of nanocoral-like cerium-activated cobalt selenide: a highly efficient electrocatalyst for oxygen evolution reaction |
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| Authors: | He Qihang Wang Xuejiao Zhou Pengcheng Ge Qianao Fu Tongxing Chen Shouxian Xiao Feng Yang Peilin He Ping Jia Lingpu Yang Dingming |
| Affiliation: | 1.State Key Laboratory of Environment-Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, People’s Republic of China ;2.International Science and Technology Cooperation Laboratory of Micro-Nanoparticle Application Research, Mianyang, 621010, People’s Republic of China ; |
| Abstract: | The development of hydrogen production via environment-friendly and efficient electrochemical water splitting technology leans heavily on the exploitation of highly active and durable oxygen evolution reaction (OER) electrocatalysts. Herein, nanocoral-like cerium-activated cobalt selenide (Ce-CoSe2) nanocomposites to enhance the OER catalytic activity have been successfully prepared by one-pot hydrothermal route via simply altering the cerium content. Owing to the ingenious introduction of cerium, as-prepared Ce-CoSe2 electrode displays remarkable OER performance in comparison with CoSe2. The nanocoral-like Ce-CoSe2 catalyst prepared under optimal condition just needs low overpotential of 276 and 398 mV at 10 and 50 mA cm?2, respectively. Additionally, it attains the current density of 255 mA cm?2 at the potential of 2.0 V vs. RHE, and shows long-term stability during OER. This work offers a simple and feasible pathway for the design and construct of metal dichalcogenides for green and renewable hydrogen production by electrocatalytic water splitting. Graphical abstract |
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