Recent developments on Ni-based oxygen evolution materials for alkaline water electrolysis
Converting renewable energy to green hydrogen by alkaline hydroelectrolysis is the most promis-ing method to rebalance energy storage and distribution.The development of alkaline hydroelectrolysis cat-alysts with low overpotential is a necessary to reduce the power consumption and cost of green hydrogen.Nickel-based materials are the most widely used commercial electrocatalysts for hydrogen pro-duction by alkaline electrolysis,and the pursuit of high current density and fast kinetics of efficient elec-trocatalysts is one of the main research directions to improve the performance of alkaline hydrolysis equip-ment.In this paper,the research progress on electrolysis of nickel-based electrocatalysts by alkaline hydro-power is reviewed,including reaction mechanism,evaluation index and preparation-structure-performance relationship.At the same time,the existing problems are analyzed,and the future development direction is prospected.
catalyst engineeringalkaline water electrolysishydrogenreaction mechanismoxygen evolu-tion reactionNi-based electrocatalysts
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