Abstract:

High-efficiency and clean hydrogen energy is considered to be one of the most potential alternative energy sources for fossil energy.In the hydrogen production method,the electrolysis of water to produce hydrogen is a very simple and easy to scale method,but there is an increase in the energy consumption and cost of hydrogen production in the process of electrolysis of water.Therefore,the preparation of catalyst with low energy consumption and stable catalytic efficiency has become a hotspotsin the research field of energy source.Layered double hydroxides（LDHs） have unique two-dimensional layered struc-ture,which makes their composition and structure easy to be controlled,so they have high-efficiency electrocatalytic activity.However,LDHs have the problems of large size and high thickness,which result in limited number of active sites of electro-catalysts,low intrinsic activity and low conductivity,which will eventually affect the electrocatalytic performance of LDHs.The structure and electrolysis mechanism of LDHs,as the current research status of water electrolysis catalysts was mainly discussed in this article.The current problem and solution were summarized and the future research direction was prospected.

Key words: LDHs, electrocatalyst, catalysis, progress