Synthesis of Co Ni1-S2 electrode material with a greatly enhanced electrochemical performance for supercapacitors by in-situ solid-state transformation

Transition metal sulfides such as Ni–Co sulfides are promising electrode materials for supercapacitors owing to their advantageous electrical conductivity. Current approaches for the synthesis of Ni–Co sulfides normally involve wet chemical sulfurization. In this work, we demonstrate a facile method for synthesizing CoxNi1-xS2 (0