Electrochemical polymerization of pyrene and aniline exclusively inside the pores of activated carbon for high-performance asymmetric electrochemical capacitors

Nanoscale
Hiroyuki ItoiYoshimi Ohzawa

Abstract

An asymmetric polymer capacitor was prepared from pyrene (PY), aniline (ANI), and commercially available activated carbon (AC) through a solvent-free preparation. PY and ANI were adsorbed into the AC host material in the gas phase and electrochemically polymerized exclusively inside the AC pores in an aqueous H2SO4 electrolyte (1 M). No volumetric expansion of the AC particles occurred upon the adsorption of monomers and their subsequent polymerizations; thus, the volumetric capacitance was enhanced by the inclusion of pseudocapacitive polypyrene (PPY) and polyaniline (PANI). The PPY and PANI structures formed inside the AC pores are very thin and have a large contact area with the conductive carbon surfaces. Therefore, the charge transfer distance between the polymers and the carbon surfaces was drastically shortened, significantly reducing the charge transfer resistance; i.e., high power density. The maximum volumetric capacitances for the PPY- and PANI-hybridized AC reached 314 and 299 F cm-3, respectively. Moreover, the strong adhesion derived from their large contact areas and adsorption capability of AC endow these materials with long cycle lifetimes. The PPY- and PANI-hybridized AC have different redox potentials and can...Continue Reading

References

Dec 14, 2002·Chemical Communications : Chem Comm·Haifeng YangDongyuan Zhao
Dec 8, 2005·Chemical Communications : Chem Comm·Takashi UemuraKazunaka Endo
May 25, 2006·Angewandte Chemie·Takashi UemuraSusumu Kitagawa
May 22, 2007·Angewandte Chemie·Takashi UemuraSusumu Kitagawa
May 8, 2008·Journal of the American Chemical Society·Takashi UemuraSusumu Kitagawa
Sep 16, 2008·Nano Letters·Meryl D StollerRodney S Ruoff
Oct 29, 2008·Nature Materials·Patrice Simon, Yury Gogotsi
Apr 8, 2009·Nano Letters·Martti KaempgenGeorge Gruner
Jan 7, 2011·Journal of the American Chemical Society·Hiroyuki ItoiTakashi Kyotani
Feb 22, 2011·Nature Nanotechnology·Xingyou LangMingwei Chen
Jul 19, 2012·Advanced Materials·Hirotomo Nishihara, Takashi Kyotani
Apr 17, 2013·ACS Applied Materials & Interfaces·Yue-E MiaoTianxi Liu

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