Fluorescent brightener CBS-X doped polypyrrole as smart electrode material for supercapacitors

Xue Wang, Jinxing Deng, Xiaojuan Duan, Dong Liu and Peng Liu

Applied Energy, 2015, vol. 153, issue C, 70-77

Abstract: Fluorescent polypyrrole nanospheres (PPy/CBS-X) with uniform diameter were synthesized via a chemical oxidation polymerization with fluorescent brightener, 2,2′-([1,1′-biphenyl]-4,4′-diyldi-2,1-ethenediyl)bis-benzenesulfonic acid disodium salt (CBS-X), as dopant. The sample S-2 containing 1mol% CBS-X simultaneously exhibited the highest electrical conductivity of 31.3S/cm and the largest specific area of 98.33m2/g. When being used as electrode material for supercapacitors, it also possessed the high electrochemical specific capacitance (245.8F/g) at a scan rate of 5mV/s and the better rate capability and improved electrochemical stability than neutral (undoped) PPy, essentially attributed to a synergistic effect on the high doping level, large specific area and good π–π interactions from both PPy chains and CBS-X dopant. Most interestingly, the electrochemical activity of the fluorescent PPy/CBS-X could be easily monitored by photoluminescence. These features make the fluorescent polypyrrole nanospheres potential smart electrode material for high performance supercapacitors.

Keywords: Polypyrrole; Smart electrode materials; Fluorescent nanospheres; Fluorescent brightener; Chemical oxidation polymerization (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (2)

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DOI: 10.1016/j.apenergy.2014.10.040

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