Doping
rare-earth metals or introducing carbon into transition
metal phosphides (TMPs) can promote the property and stability of
water electrolysis. An original composite nanostructure, cerium-doped
and carbon-coated CoMoO4 (Ce-doped CoMoO4@C),
was obtained by a simple hydrothermal and annealing process successively.
Subsequently, chemical vapor deposition (CVD) was adopted to synthesize
carbon-coated and cerium-doped CoMoP/MoP (Ce-doped CoMoP/MoP@C) with
diammonium hydrogen phosphate as the phosphorus source. Ce-doped CoMoP/MoP@C
displayed superb bifunctional HER and OER catalytic performance under
alkaline conditions. The overpotential η10, Tafel
slope, and double-layer capacitance (C
dl) for the OER were 287.0 mV, 74.4 mV dec–1, and
10.44 mF cm–2, while for the HER, these values were
188.0 mV, 72.2 mV dec–1, and 33.00 mF cm–2, respectively. Meanwhile, only 1.59 V (@10 mA cm–2) was needed to drive the entire water splitting. In addition, there
was no apparent attenuation after electrolytic catalysis for 12 h
continuously. The superb performance and endurance gave credit to
the cooperative effect between carbon materials and metal phosphides
and the optimized electronic structure by the incorporation of the
Ce element.
Owing to the ionic doping and the partial phosphating strategies, Fe0.25-CoP catalyst exhibited remarkable catalytic activity and durability for electrochemical water splitting.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.