Bacterial cellulose membranes coated by polypyrrole/copper oxide as flexible supercapacitor electrodes

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• 作者：Shuo Peng ; Lingling Fan ; Weida Rao ; Zikui Bai ; Weilin Xu…
• 刊名：Journal of Materials Science
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：52
• 期：4
• 页码：1930-1942
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics;
• 出版者：Springer US
• ISSN：1573-4803
• 卷排序：52

文摘

The developments of flexible supercapacitors are of great importance to the growing demand of portable electronic products. In the present work, we have successfully prepared bacterial cellulose (BC) membranes coated by polypyrrole (PPy) and copper oxide (CuO) as flexible composite electrodes for supercapacitor applications. The highest electrical conductivity value of 7.4 S cm−1 was achieved using copper acetate aqueous solution with concentration of 1 wt%. Electrochemical measurements proved that the supercapacitors using the PPy/CuO/BC electrodes had a specific capacitance of 601 F g−1 with an energy density of 48.2 Wh kg−1 and a power density of 85.8 W kg−1 at a current density of 0.8 mA cm−2. The specific capacitance was kept at 385 F g−1 after 300 cycles. The introduction of the CuO nanoparticles gave rise to the improved capacitance.