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CuCo2S4 nanoparticles demonstrating outstanding electrochemical performances were firstly synthesized through a simple solvothermal approach without using any templates. CuCo2S4 synthesized in glycerol (CuCo2S4-glycerol) fulfills an ultrahigh capacitance of 5030 F g(-1) at 20 A g(-1) in a polysulfide electrolyte.
Tang et al. (Wed,) studied this question.