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Hybrid Ni_(2)P/CoP Nanosheets as Efficient and Robust Electrocatalysts for Domestic Wastewater Splitting

Energy & Environmental Materials 2023年第5期6卷 330-339页

作者： Yeshu Tan Jianrui Feng Liqun Kang Longxiang Liu Fangjia Zhao Siyu Zhao Dan J.L.Brett paul R.Shearing Guanjie He Ivan P.Parkin Christopher Ingold Laboratory Department of ChemistryUniversity College LondonLondon WC1H 0AJUK Materials and Catalysis Laboratory Department of Chemical EngineeringUniversity College LondonLondon WC1E 7JEUK Electrochemical Innovation Laboratory Department of Chemical EngineeringUniversity College LondonLondon WC1E 7JEUK School of Chemistry University of LincolnJoseph Banks LaboratoriesLincolnLN67DLUK

The development of low-cost,robust and efficient non-noble metal electrocatalysts is still a pursuit for the hydrogen evolution reaction(HER).Herein,a self-standing electrocatalyst,Ni_(2)P/CoP nanosheet,was fabricated directly on three-dimensional Ni foams by two facile steps,which illustrated both high activity and stability for HER in different *** from the porous structures of nanosheets with large specific surface area and the hybrid Ni_(2)P/CoP,the as-prepared electrocatalyst presented remarkable HER with overpotentials of 65.2 and 87.8 mV to reach a current density of-10 mA cm^(-2)in neutral and alkaline media,*** function theory calculations revealed a lower activation energy of water dissociation and efficient HER steps of hybrid Ni_(2)P/CoP nanosheets compared with mono *** self-standing electrocatalyst maintained excellent chemical ***,the HER process in domestic wastewater was realized with more impressive performance by using Ni_(2)P/CoP nanosheets compared with commercial Pt/*** was continuously generated for 20 h in mildly alkaline dishwashing *** work provides a feasible way to fabricate non-noble metal and self-standing hybrid bimetallic phosphides for HER in neutral and alkaline media,showing great potential for efficient hydrogen production by re-utilizing wastewater resources.

关键词： hybrid hydrogen evolution reaction Ni_(2)P/CoP nanosheet self-standing wastewater splitting

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