Eco-friendly Polypyrrole-coated Cocozelle Composites for Supercapacitor Application 


Vol. 21,  No. 6, pp. 1300-1307, Jun.  2020
10.1007/s12221-020-9375-0


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  Abstract

Cocozelle is essentially consisted of hemicellulose and lignin with a hierarchically porous structure. Herein, cocozelle slices after freeze-drying were employed as green substrates to support the growth of polypyrrole (PPy) via a facile oxidative polymerization approach. The cocozelle surface was densely covered with sheet-like PPy due to the hydrogen bonding between PPy and cocozelle. The PPy/cocozelle composites could be facilely utilized as supercapacitor electrodes, which showed a high specific capacitance of 1108 F g-1 with an energy density of 70.5 Wh kg-1 and a power density of 398 W kg-1 at a charge/discharge current density of 0.8 mA cm-2 as well as desirable cycling life with a capacitance retention rate of 76.9 % after 1000 cycles. Moreover, 95.3 % of the initial specific capacitance obtained at 0.2 mA cm-2 could be reached as the current density increased to 1.6 mA cm-2. These results demonstrate that cocozelle could be used as a superior alternative biomass-derived substrate for the developments of eco-friendly and renewable energy storage devices.

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  Cite this article

[IEEE Style]

H. Ji, C. Zhang, W. Rao, B. Guo, L. Fan, Z. Bai, H. Bao, J. Xu, "Eco-friendly Polypyrrole-coated Cocozelle Composites for Supercapacitor Application," Fibers and Polymers, vol. 21, no. 6, pp. 1300-1307, 2020. DOI: 10.1007/s12221-020-9375-0.

[ACM Style]

Hui Ji, Chuanjie Zhang, Weida Rao, Bin Guo, Lingling Fan, Zikui Bai, Haifeng Bao, and Jie Xu. 2020. Eco-friendly Polypyrrole-coated Cocozelle Composites for Supercapacitor Application. Fibers and Polymers, 21, 6, (2020), 1300-1307. DOI: 10.1007/s12221-020-9375-0.

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pISSN : 1229 - 9197
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