Cucumber-Like V2O5/poly(3,4-ethylenedioxythiophene)&MnO2 Nanowires with Enhanced Electrochemical Cyclability

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• 作者：Liqiang Mai ; Fei Dong ; Xu Xu ; Yanzhu Luo ; Qinyou An ; Yunlong Zhao ; Jie Pan ; Jingnan Yang
• 刊名：Nano Letters
• 出版年：2013
• 出版时间：February 13, 2013
• 年：2013
• 卷：13
• 期：2
• 页码：740-745
• 全文大小：425K
• 年卷期：v.13,no.2(February 13, 2013)
• ISSN：1530-6992

文摘

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 MnO₂ nanoparticles as the protuberance and synthesized the novel cucumber-like MnO₂ 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 V₂O₅ 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.

Keywords:

Heterostructured nanomaterial; vanadium pentoxide/PEDOT; manganese oxide; layer-by-layer assembly; electrochemical property