In-situ grown interwoven NiSe on Ni foam as a catalyst for hydrazine oxidation

Abstract NiSe was prepared in-situ on nickel foam (NiSe/NF), using a solvothermal process. The NiSe/NF consisted of interwoven nanorods and nanowires. The interwoven NiSe/NF was of good crystallinity and contained no impurities, and consisted of many nanorods and a few nanowires. The interwoven structure uniformly covered the NF substrate, which can potentially yield a large surface area with abundant active sites, and thus high catalytic activity. The NiSe/NF was used as a working electrode for hydrazine oxidation, in 1.0 mol L −1 KOH containing 20 mmol L −1 N 2 H 4 · H 2 O. Excellent electrocatalytic activity and stability of NiSe/NF for hydrazine oxidation was observed, with a current density of 22 mA cm −2 at −0.53 V. The interwoven structure and good conductivity of NiSe/NF promoted its electrocatalytic activity.