An overview of heteroatom doped cobalt phosphide for efficient electrochemical water splitting

Coupled W–Co2P hybrid nanosheets as a robust bifunctional electrocatalyst for hydrazine-assisted hydrogen production

“…[1][2][3][4] The electrocatalytic water splitting technology consists of two half-reactions, including the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), and is regarded as one of the most efficient ways to sustainably produce hydrogen. [5][6][7][8] However, slow anodic OER usually requires greater thermodynamic potential to form O-O bonds, resulting in a large cell voltage to drive the water splitting. [9][10][11] In recent years, the efficiency of electrocatalytic water splitting has been improved by replacing the anodic OER with more favorable oxidation of small molecules.…”

Probing of the Noninnocent Role of P in Transition-Metal Phosphide Hydrogen Evolution Reaction Electrocatalysts via Replacement with Electropositive Si

“…Electronegative nonmetal elements, such as N, O, F, S, and Se, are general dopants in TM P electrocatalysts to promote electron transfer from the metal to the anion and lower the filling of metal d -bands, mitigating too strong hydrogen adsorption energy of the metal sites. − However, the incorporation of electropositive elements is less studied because of fewer reported TM –P–(Al or B) phases. These studies show that Al replaces the metal sites and broadens the metal d -band while B replaces P sites and decreases the density of states of the metal d -band at Fermi energy ( E F ), both balancing the hydrogen adsorption energies of the metal sites. − Si is another main group element that is more electropositive than P. However, despite many known TM –Si–P phases, there have been no reports on P- and Si-containing TM P electrocatalysts for HER.…”

Electrocatalytic water oxidation of coral-like porous Zn-CoP nanohybrids synergistically inspired by photothermal and photoelectronic effects

“…Traditionally, researchers are focused on the modulation of catalyst phase/heterogeneous structure, [11][12][13][14][15][16][17][18] morphology architure, [19][20][21] defects [22][23][24][25] and component engineering. [26][27][28][29][30][31] For instance, heteroatom dopants have been reported to expediently tailor the surface electronic structure and charge distribution of TMPs to a large extent, [32][33][34] thereby optimizing the bond strength of TMPs to varied reaction intermediates, while the introduction of a sacricial dopant can further create cation vacancies and nanopores to expose more active sites and shorten particle diffusion distances. 35 Nevertheless, these studies focused on the modulation of catalyst microstructure and composition, while the possible inuences of other factors (such as light energy and heat energy) on electrocatalytic performances were ignored.…”