Construction of a built-in electric field in Mo-doped Ni/WO₃ to enhance asymmetric charge distribution for efficient overall water splitting.

ABSTRACT: Constructing an asymmetric charge distribution and built-in electric field (BIEF) has proven to be an effective strategy for enhancing the catalytic performance of both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) catalysts. Herein, a Mo-doped Ni/WO₃ heterojunction catalyst was immobilized on Ni foam for enhancing the performance of the HER and OER. The constructed Ni/WO₃ heterointerface facilitates electron transport, while the incorporation of Mo further amplifies charge asymmetry in the interfacial region. The optimized Mo₃-Ni/WO₃ catalyst exhibits excellent performance, requiring only 13 mV and 328 mV overpotential to reach current densities of 10 and 100 mA cm^-2 for the HER and OER, respectively. Besides,

SUBMITTER: Sun Y 

PROVIDER: S-EPMC12679481 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature