A novel synthesis of V10O24*10H2O nanoribbons and their capacitive properties in aqueous electrolytes
Abstract V 10 O 24 *10H 2 O nanoribbons were synthesized by a simple, rapid and high yield route with starting from cheap V 2 O 5 and glucose, and their capacitive properties were firstly investigated. The as prepared samples were characterized by XRD, XPS, TG and SEM. The effect of various factors (such as aqueous electrolyte, working voltage and current density) on the capacitive behavior of V 10 O 24 *10H 2 O electrode was analyzed by cyclic voltammetry and galvanostatic charge/discharge test. The best capacitive properties were achieved in 1 M KNO 3 solution at the working voltage of 0.3 to 0.7 V. The highest initial specific capacitance was 177.5 F g 1 at the current density of 200 mA g 1 The capacity retention was 93.2% or 85.3% after 1000 or 2000 cycles. Furthermore, the cyclic stability of V 10 O 24 *10H 2 O was excellent at the high current density of 800 mA g 1