Just add water to split water: ultrahigh-performance bifunctional electrocatalysts fabricated using eco-friendly heterointerfacing of NiCo diselenides

Using eco-friendly water-based in situ sprouting, 2M (M = Ni, Co) selenide nanosheets are fabricated. The 2M selenide exhibits high HER (24 mV at j₁₀) and OER (346 mV at j₄₀₀) performances, including a low cell overpotential of 1.69 V at j₁₀₀.