Conductive polypyrrole-bacterial cellulose nanocomposite membranes as flexible supercapacitor electrode

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• 作者：Jie Xu ; Ligen Zhu ; Zikui Bai ; Guijie Liang ; Li Liu ; Dong Fang ; Weilin Xu
• 关键词：Bacterial cellulose ; Polypyrrole ; Nanocomposites ; Flexible electrode ; Supercapacitors
• 刊名：Organic Electronics
• 出版年：December, 2013
• 年：2013
• 卷：14
• 期：12
• 页码：3331-3338
• 全文大小：1905 K

文摘

Conductive nanocomposite membranes of polypyrrole/bacterial cellulose (PPy/BC) were fabricated in situ by oxidative polymerization of pyrrole with iron (III) chloride as an oxidant and BC as a template. The morphology of the PPy/BC membrane indicated that PPy nanoparticles deposited on the BC surface connected to form a continuous nanosheath structure by taking along the BC nanofiber. The flexible PPy/BC membrane obtained with the optimized reaction condition exhibited a high electrical conductivity of 3.9 S cm^鈭?, which was hardly affected by bending stress. The PPy/BC membrane could be directly used as flexible supercapacitor electrodes, with a maximum discharge capacity of 101.9 mA h g^鈭? (459.5 F g^鈭?) at 0.16 A g^鈭? current density. The capacity decreased with charge/discharge cycling, which is attributed to mechanical degradation of PPy as evidenced by scanning electron microscopy (SEM).