Synthesis of Ytterbium Tungstate with Excellent Pseudocapacitive Behavior and a High Cycling Stability Material for Supercapacitors

Nanoparticles of ytterbium tungstate prepared through the direct addition of an yb^3+ solution to a tungstate solution, were computed through fourier transform infrared spectroscopy (ftir), scanning electron microscopy (sem), energy-dispersive x-ray spectroscopy (eds). further the supercapacitive characteristics of the nanoparticles, as a potential material for constructing electrodes, were evaluated through cyclic voltammetry (cv), galvanostatic charge/discharge (gcd) and electrochemical impedance spectroscopy (eis). electrodes made of the yb^2(wo_4)_3 had a specific capacitance (sc) value of 336 f g_-1 in a 2.0 m h_2so_4 solution at a potential scan rate of 2 mv s^-1; and 298 f g^-1 at a current density of 1 a g^-1 based on gcd tests. the electrodes also revealed to have a 95.8% cycling durability after 4000 potential cycles.