Cucumber-like V_2O_5/poly(3,4-ethylenedioxythiophene) &MnO_2 nanowires with enhanced electrochemical cyclability

摘要

Inspired by the cucumber-like structure, by combining the in situ chemical oxidative polymerization with facile soaking process, we designed the heterostructured nanomaterial with PEDOT as the shell and MnO_2 nanoparticles as the protuberance and synthesized the novel cucumber-like MnO_2 nanoparticles enriched vanadium pentoxide/poly(3,4- ethylenedioxythiophene) (PEDOT) coaxial nanowires. This heterostructured nanomaterial exhibits enhanced electrochemical cycling performance with the decreases of capacity fading during 200 cycles from 0.557 to 0.173% over V_2O_5 nanowires at the current density of 100 mA/g. This method is proven to be an effective technique for improving the electrochemical cycling performance and stability of nanowire electrodes especially at low rate for application in rechargeable lithium batteries.