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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >In-Situ-Engineered 3D Cu3Se2@CoSe2–NiSe2 Nanostructures for Highly Efficient Electrocatalytic Water Splitting
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In-Situ-Engineered 3D Cu3Se2@CoSe2–NiSe2 Nanostructures for Highly Efficient Electrocatalytic Water Splitting

机译：原位设计的3D CU3Se2 @ COSE2-NISE2纳米结构，用于高效电催化水分裂

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摘要

In-situ engineering of nonprecious catalysts with highly electrocatalytic performances for H_(2) or O_(2) generation is one of unresolved challenges in industrial chemistry. In this work, a trimetallic (Cu, Ni, Co) selenide is fabricated in-situ on the nickel–cobalt foam (NCF) modified by the dielectric barrier discharge (DBD) plasma (PNCF) with a facile hydrothermal method. The resulting transition-metal-based selenide (Cu_(3)Se_(2)@CoSe_(2)–NiSe_(2)/PNCF) exhibits excellent catalytic activity for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in 1 M KOH, and the overpotentials stimulated with a current density of 10 (j _(10)) and 100 (j _(100)) mA cm~(–2) are ～42 and 178 mV in HER process, as well as 240 and 270 mV in OER. Specifically, the electrocatalytic activity of Cu_(3)Se_(2)@CoSe_(2)–NiSe_(2)/PNCF is better than the benchmarked RuO_(2) for OER in the high current density region (>j _(250)). In addition, the amount of H_(2) and O_(2) gases for Cu_(3)Se_(2)@CoSe_(2)–NiSe_(2)/PNCF stimulated with j _(10) are ～1.52 and 0.9 mmol h~(–1), respectively, thus exhibiting higher efficiency than numerous nonprecious catalysts containing transition metals.
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