Controlled preparation of CoNi2S4 nanorods derived from MOF-74 nanoarrays involving an exchange reaction for high energy density supercapacitors

CoNi 2 S 4 nanorods derived from MOF-74 nanoarrays is prepared and shows high specific capacitance and good cyclic stability, and the assembled ASC delivers a high energy density of 0.64 mW h cm −2 at a power density of 1.64 mW cm −2 .