Three-dimensional lily-like CoNi2S4 as an advanced bifunctional electrocatalyst for hydrogen and oxygen evolution reaction

Three-dimensional lily-like CoNi2S4 has been successfully synthesized on Ni foam. Lily-like CoNi2S4/Ni can be an efficient and stable bifunctional electrocatalyst. It possesses excellent characteristics for both hydrogen evolution reaction and oxygen evolution reaction, and its performance is comparable to that of most of the electrocatalysts reported in the literature.