NDLI: A facile approach to improve the electrochemical properties of polyaniline-carbon nanotube composite electrodes for highly flexible solid-state supercapacitors

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A facile approach to improve the electrochemical properties of polyaniline-carbon nanotube composite electrodes for highly flexible solid-state supercapacitors

Content Provider	Semantic Scholar
Author	Zhou, Haihan Zhi, Xiaomin Zhai, Hua-Jin
Copyright Year	2018
Abstract	Abstract We seek to improve the electrochemical properties of supercapacitor via engineering the interface of electroactive material/current collector. A facile electrochemical method is put forward to fabricate expanded graphite (ExGP), and polyaniline-carbon nanotube (PANI-CNT) composite electrodes using ExGP as substrate are prepared by one-step co-electrodeposition. Compared with PANI-CNT/GP electrodes, PANI-CNT/ExGP electrodes show significantly improved electrochemical capacitive performances due to reduced constriction/spreading resistance. This effect is ascribed to the increased area of contact points at the interface of electroactive material/current collector for the latter. The PANI-CNT/ExGP electrodes deliver a specific capacitance of 826.7 F g−1, higher than previous reports based on PANI-CNT composites. A highly flexible solid-state supercapacitor is assembled using PANI-CNT/ExGP electrodes. The device shows high rate capability, superior energy/power characteristics (7.1 kW kg−1 at an energy density of 12.0 Wh kg−1), and good cycling stability. This study demonstrates that optimizing electroactive material/current collector interface can implement faster electron transport and represents an effective strategy to promote electrochemical capacitive properties of supercapacitors.
Starting Page	18339
Ending Page	18348
Page Count	10
File Format	PDF HTM / HTML
DOI	10.1016/j.ijhydene.2018.07.168
Volume Number	43
Alternate Webpage(s)	http://ims.sxu.edu.cn/docs/2018-11/4b7c0df86f184c399eccbed4683becef.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.ijhydene.2018.07.168
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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