Quantum capacitance of CuS:Ce3+ quantum dots as high-performing supercapacitor electrodes

The supercapacitor has the energy density of 129.87 W h kg⁻¹ at a power density of 15584.4 W kg⁻¹ and an energy density of 107.32 W h kg⁻¹ at a power density of 32196.1 W kg⁻¹.