Journal
POLYMERS
Volume 9, Issue 10, Pages -Publisher
MDPI AG
DOI: 10.3390/polym9100510
Keywords
polyaniline; nanotube; urea; template; morphology; electrochemical performance
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Funding
- Natural Science Foundation of Guangxi [2015GXNSFAA139277]
- Open Fund of Key Laboratory of New Processing Technology for Nonferrous Metal and Materials of Ministry of Education [14KF-1]
- National Natural Science Foundation of China [51363005]
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Polyaniline nanotubes were successfully synthesized by a facile in situ chemical oxidative polymerization method using urea as soft template. When the urea/aniline molar ratio is 3:1, the as-prepared nanotubular polyaniline (PANI-3) shows regular and uniform square capillaries, which provides a high electrode/electrolyte contact, easy ion diffusion and enhanced electroactive regions during the electrochemical process, leading to weak internal resistance and improved electrochemical performance. The PANI-3 sample exhibits a high specific capacitance of 405 F/g at current density of 0.2 A/g, and PANI only has a specific capacitance of 263 F/g. At current density of 1 A/g, the capacitance of PANI-3 is still 263 F/g (64.9% of the capacitance at 0.2 A/g). Such a PANI-3 nanotube, with regular and uniform capillary, is a promising electrode material for high-performance supercapacitors.
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