(603a) Molybdenum Dioxide Functionalized CoP Porous Nanocatalyst for Highly Efficient Hydrogen Evolution

The development of highly active and stable catalysts based on low-cost materials for hydrogen evolution reaction (HER) is crucial to catalytic water splitting. In this work, we report on using molybdenum oxide as an intermediary (pore-forming agent and molybdenum dioxide precursor) to synthesis molybdenum dioxide functionalized CoP nanosheets for HER. By virtue of modulating hydrogen adsorption/desorption energies on the central CoP, together with the in situ formation of the porous structure, the as-prepared porous CoP/MoO₂ hybrid nanosheets exhibit an excellent HER catalytic performance, only requiring small overpotential of 41 mV to support a current density of 20 mA cm^-2, which is comparable catalytic performance to Pt/C benchmark and exceeds all reported transition-metal phosphides HER catalysts.