CTAB-assisted hydrothermal synthesis of platelike and nanorod-like NiMoO4 morphologies for supercapacitor and hydrogen evolution applications

In this work, the & alpha;-NiMoO4 nanostructures were directly grown on nickel foam with platelike and nanorod-like morphologies by using the various amounts of cetyltrimethylammonium bromide (CTAB) as surfactant. The structural, microstructural, and electrochemical properties were explored as a function of CTAB contents. The particular morphology was transformed to platelike and nanorod-like by increasing the amounts of CTAB sur-factant. The nanorod-like & alpha;-NiMoO4 sample showed the highest specific capacity of 2226 Fg- 1 at 1 Ag-1 and highest capability rate of 80 % by increasing the current density up to 5 Ag-1. Moreover, the & alpha;-NiMoO4 elec-trodes with nanorod-like morphology had the highest electrocatalytic activity, including the lowest overpotential of-177 mV at 10 mA cm-2 and the lowest Tafel slope of 79 mV dec- 1.