首页|Recent advances and future prospects on Ni3S2-Based electrocatalysts for efficient alkaline water electrolysis
Recent advances and future prospects on Ni3S2-Based electrocatalysts for efficient alkaline water electrolysis
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Green hydrogen(H2)produced by renewable energy powered alkaline water electrolysis is a promising alternative to fossil fuels due to its high energy density with zero-carbon emissions.However,efficient and economic H2 production by alkaline water electrolysis is hindered by the sluggish hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).Therefore,it is imperative to design and fabricate high-active and low-cost non-precious metal catalysts to improve the HER and OER performance,which affects the energy efficiency of alkaline water electrolysis.Ni3S2 with the heazlewoodite structure is a potential electrocatalyst with near-metal conductivity due to the Ni-Ni metal network.Here,the review comprehensively presents the recent progress of Ni3S2-based electrocatalysts for alkaline water electrocatalysis.Herein,the HER and OER mechanisms,performance evaluation criteria,preparation methods,and strategies for performance improvement of Ni3S2-based electrocatalysts are discussed.The challenges and perspectives are also analyzed.
Alkaline water electrolysisHydrogenElectrocatalystsNi3S2
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