2612
Core-Shell V2O5/Conductive Polymers Hybrid Aerogels for High-Performance Supercapacitors

Tuesday, 15 May 2018
Ballroom 6ABC (Washington State Convention Center)

ABSTRACT WITHDRAWN

Vanadium pentoxide (V2O5) is a promising electrode material for supercapacitors owing to its high theoretical capacitance, natural abundance and low cost. However, the low conductivity and electrochemical instability hinder its practical applications. Subjected to this challenge, core-shell structured V2O5/conducting polymers hybrid aerogels, V2O5/Poly(3,4-ethylenedioxythiophene (PEDOT), V2O5/Polyaniline and V2O5/polypyrrole, were synthesized in a versatile varient vaper-phase polymerization process and the resulting samples exhibited the enhanced electrochemical performances. Especially, V2O5/PEDOT aerogels delivered a high specific capacitiance of 614 F g–1 and energy density of 85.3 W h/kg at the power density of 250 W/kg. After 50,000 cycles, V2O5/PEDOT presented a capacitance retention of 122% that suggests a capacity increase in the cycles. The excellent performances can be attributed to the robust conducting-polymer shell and valence varitation in V2O5. This effective stratagy pave a way to develop the high-performance electrode materials for supercapacitors.