A highly ordered honeycomb-like nickel(III/II) oxide-enhanced photocatalytic fuel cell for effective degradation of bisphenol A.

•Highly interpenetrated honeycomb-like H-NiOx is prepared by AO-ED methods.•Redox-active H-NiOx exhibits smaller charge transfer resistance than C-NiOx.•The H-NiOx cathode promotes BPA degradation in photocatalytic fuel cells.•The presence of NaClO catholyte can sustain the integrity and stability of H-NiOx.•Degradation of BPA in photocatalytic fuel cell obeys first-order reaction kinetics.