Volume 129, Issue 4 pp. 1660-1668
Article

Electrospun polyaniline nanofibers web electrodes for supercapacitors

Sudeshna Chaudhari

Sudeshna Chaudhari

School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore

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Yogesh Sharma

Yogesh Sharma

Physics Section, Department of Paper Technology, Indian Institute of Technology, Saharanpur, Uttar Pradesh 247001, India

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Panikar Sathyaseelan Archana

Panikar Sathyaseelan Archana

Nanoscience and Nanotechnology Initiative, National University of Singapore, Singapore 174576, Singapore

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Rajan Jose

Rajan Jose

Faculty of Industrial Science and Technology (FIST), Universiti Malaysia Pahang, 26300 Kuantan, Malaysia

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Seeram Ramakrishna

Seeram Ramakrishna

Nanoscience and Nanotechnology Initiative, National University of Singapore, Singapore 174576, Singapore

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Subodh Mhaisalkar

Subodh Mhaisalkar

Energy Research Institute @ NTU (ERI@N), Singapore 637553, Singapore

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Madhavi Srinivasan

Corresponding Author

Madhavi Srinivasan

School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore

Energy Research Institute @ NTU (ERI@N), Singapore 637553, Singapore

School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore===Search for more papers by this author
First published: 18 December 2012
Citations: 130

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 H2SO4 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. J. Appl. Polym. Sci., 2013

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