Surface wettability engineering of MoS2 quantum dot-decorated NiCo2O4 nanospheres for enhanced oxygen evolution reaction.

Modulating MoS2 quantum dots enhances the hydrophilicity of NiCo2O4, accelerates bubble detachment, promotes mass transfer, and consequently enhances catalytic activity. The optimized catalyst achieves a low overpotential of 272 mV at 10 mA cm-2 and a Tafel slope of 76.3 mV dec-1 in 1.0 mol L-1 KOH.