With global goal of the “carbon neutrality”

hydrogen production by water electrolysis has become an important research direction in fields of energy chemistry and catalytic science. The gas-solid-liquid triphase interface model is a basic concept in physical chemistry

which has been increasingly used in the study of hydrogen production by water electrolysis

and gradually becomes a research focus in water electrolysis. This review provides insights into a research progress on the triphase interface for hydrogen production by water electrolysis. The water electrolysis mechanism and electrochemical kinetics at triphase interface are discussed. On this basis

the construction of novel triphase interface is systematically analyzed in aspects of composition regulatory and microstructure design. Moreover

combing with the problems and challenges existing in the field of hydroelectrolysis and hydrogen production

research directions of the triphase interface for water electrolysis is prospected.