Atom Doping Engineering of Transition Metal Phosphides for Hydrogen Evolution Reactions

Abstract

Transition metal phosphides (TMPs) have attracted attention in electrocatalytic hydrogen production because of their multiple active sites, adjustable structures, complex and variable composition, and distinctive electronic structures. However, the catalytic performance of pure TMPs in the hydrogen evolution reaction (HER) is not ideal. Fortunately, this situation can be changed by atom doping engineering because atom doping can efficaciously adjust the electronic structure, Gibbs free energy (ΔG _H*) and d-band center to enhance the kinetics of catalytic reactions. Thus, atom doping engineering has aroused widespread interest. This review examines, analyzes and summarizes our previous work and that of others on atom doping engineering, including the activity origin of doped TMPs, doping with nonmetals (B, S, N, O, F, etc.), doping with metals (Ni, Co, Fe, Mn, Mo, Al, etc.) and codoping with nonmetals and metal atoms, as well as direct doping and synergetic doping, doping methods and the resulting HER properties. Finally, the key problems and future directions for development of atom doping in TMPs are discussed. This review will aid the design and construction of high-performance nonnoble metal catalysts for the HER and other electrocatalytic processes.

Graphical abstract

Atoms doping can effectively change the electronic structure to improve catalytic performance of catalysts. Accordingly, this review summarizes the doping engineering,including the electrochemical activity sources of TMPs, the doping modes and doping methods, the HER properties, and the existing key problems and future development directions of doped TMPs.

Funding

National Natural Science Foundation of China(No. 22075223)

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology)(2021-ZD-4)

Wuhan University of Technology(CY202001)

Shanghai Science and Technology Commission(20511104003)