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Title: Electrospun polyaniline nanofibers web electrodes for supercapacitors
Authors: Chaudhari, S.
Sharma, Y.
Archana, P.S. 
Jose, R.
Ramakrishna, S. 
Mhaisalkar, S.
Srinivasan, M.
Keywords: batteries and fuel cells
conducting polymers
Issue Date: 15-Aug-2013
Source: Chaudhari, S., Sharma, Y., Archana, P.S., Jose, R., Ramakrishna, S., Mhaisalkar, S., Srinivasan, M. (2013-08-15). Electrospun polyaniline nanofibers web electrodes for supercapacitors. Journal of Applied Polymer Science 129 (4) : 1660-1668. ScholarBank@NUS Repository.
Abstract: Polyaniline nanofibers (PANI-NFs) web are fabricated by electrospinning and used as electrode materials for supercapacitors. Field-emission scanning electron microscope micrographs reveal nanofibers web were made up of high aspect ratio (>50) nanofibers of length ∼30 μm and average diameter ∼200 nm. Their electrochemical performance in aqueous (1M H 2SO4 and Na2SO4) and organic (1M LiClO4 in propylene carbonate) electrolytes is compared with PANI powder prepared by in situ chemical oxidative polymerization of aniline. The electrochemical properties of PANI-NFs web and PANI powder are studied using cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy. PANI-NFs web show higher specific capacitance (∼267 F g-1) than chemically synthesized PANI powder (∼208 F g -1) in 1M H2SO4. Further, PANI-NFs web demonstrated very stable and superior performance than its counterpart due to interconnected fibrous morphology facilitating the faster Faradic reaction toward electrolyte and delivered specific capacitance ∼230 F g-1 at 1000th cycle. Capacitance retention of PANI-NFs web (86%) is higher than that observed for PANI powder (48%) indicating the feasibility of electro spun PANI-NFs web as superior electrode materials for supercapacitors. © 2012 Wiley Periodicals, Inc.
Source Title: Journal of Applied Polymer Science
ISSN: 00218995
DOI: 10.1002/app.38859
Appears in Collections:Staff Publications

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