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With the strengths of zero carbon emission and high gravimetric energy density, hydrogen energy is recognized as a primary choice for future energy supply. Electrochemical water splitting provides a promising strategy for effective and sustainable hydrogen production through renewable electricity, and one of the immediate challenges toward its large‐scale application is the availability of low‐cost and efficient electrocatalysts for the hydrogen evolution reaction (HER). Given the enormous efforts in the exploration of potential transition‐metal carbide (TMC) electrocatalysts, this review aims to summarize the recent advances in synthetic methods and optimization strategies of TMC electrocatalysts. Additionally, the perspectives for the development of novel efficient TMC‐based catalysts are also proposed. [ABSTRACT FROM AUTHOR]

Transition-metal carbides (TMCs) have drawn broad attention as potential HER catalysts in recent years due to the platinum-like electron structure. Keywords: heteroatom doping; heterostructure; hydrogen evolution; transition-metal carbides EN heteroatom doping heterostructure hydrogen evolution transition-metal carbides 1 1 1 03/22/21 20210317 NES 210317 B Developing low-cost and highly active electrocatalysts b to replace Pt group metals is very critical to the hydrogen evolution reaction (HER). Heteroatom doping, heterostructure, hydrogen evolution, transition-metal carbides. [Extracted from the article]