Fabrication of amorphous Co/Mo–MnSe_x electrode materials for high-performance hybrid supercapacitors

Abstract

Assembled Co/Mo–MnSex//AC HBS devices and electrochemical properties.

In situ P-doping induced Se vacancies enhance the supercapacitor performance of NiCo2Se4

“…For the three-electrode system test, the electrochemical performance of the supercapacitor battery was studied by a cyclic voltammogram (CV) test at different scan rates of 2–50 mV s −1 , a constant current charge and discharge (GCD) test at different current densities of 1–20 A g −1 and electrochemical impedance spectroscopy (EIS). The specific capacity of the electrodes was evaluated using eqn (1): 15 where C s , i , V and ∫ V d t represent the specific capacity (F g −1 ), discharging current density (A g −1 ), potential with initial and final values of V i and V f (V), and the integral galvanostatic discharge curve area (V s −1 ), respectively. The energy density ( E ) and power density ( P ) of the device were calculated using formulas (2) and (3): 16 …”

Self-assembled VN/Ti3C2Tx composites for asymmetric supercapacitors

“…1,2 Supercapacitors are favored by the energy storage industry because of their large power density, extended cycling life, rapid charging and discharging rates, and eco-friendly properties. 3 Nevertheless, their practical applications are limited by the low energy density. 4–6 Therefore, high-performance supercapacitors must provide a large energy density without compromising their capacity.…”