Research progress in cobalt-iron materials supported on nickel foam as catalysts for water electrolysis
Electrocatalytic water splitting,as an economical,green,and efficient hydrogen production technology,is considered an important part of achieving sustainable energy development.However,the ideal electrocatalyst currently is the precious metal catalysts,which are severely limited in large-scale development due to their scarce resources and high prices.Cobalt-iron materials have attracted widespread attention due to their excellent performance in hydrogen evolution and oxygen evolution reactions,becoming one of the most promising non-precious metal electrocatalysts.In recent years,great progress has been made in the development of cobalt-iron materials and nickel foam composite electrocatalysts.Researchers have optimized their catalytic performance by adjusting the morphology,optimizing the electronic arrangement,increasing the active sites and accelerating the mass transfer rate.In this paper,the evaluation parameters of electrocatalytic reaction kinetics are introduced at first,and then the preparation process of the composite of nickel foam and cobalt-iron materials are discussed,and the optimization strategies of cobalt-iron materials electrocatalyst supported on nickel foam are expounded.Finally,the existing problems and future prospects are analyzed.
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