Electrospun polyaniline nanofibers web electrodes for supercapacitors. Issue 4 (18th December 2012)

• Record Type: Journal Article
• Authors: Chaudhari, Sudeshna; Sharma, Yogesh; Archana, Panikar Sathyaseelan; Jose, Rajan; Ramakrishna, Seeram; Mhaisalkar, Subodh; Srinivasan, Madhavi
• Is Part Of: Journal of applied polymer science. Volume 129:Issue 4(2013:Aug. 15)
• Page Start: 1660
• Page End: 1668
• Publication Date: 2012-12-18
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.38859
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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 (1<italic>M</italic> H<sub>2</sub>SO<sub>4</sub> and Na<sub>2</sub>SO<sub>4</sub>) and organic (1<italic>M</italic> LiClO<sub>4</sub> in propylene carbonate) electrolytes is compared with PANI powder prepared by <italic>in situ</italic> 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<sup>−1</sup>) than chemically synthesized PANI powder (∼208 F g<sup>−1</sup>) in 1<italic>M</italic> H<sub>2</sub>SO<sub>4</sub>. 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<sup>−1</sup> 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. J. Appl. Polym. Sci., 2013</p> </abstract>