Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/106498
Title: Effect of the ionic conductivity on the performance of polyelectrolyte-based supercapacitors
Authors: Wee, Grace
Larsson, Oscar
Srinivasan, Madhavi
Berggren, Magnus
Crispin, Xavier
Mhaisalkar, Subodh
Keywords: DRNTU::Engineering::Materials
Issue Date: 2010
Source: Wee, G., Larsson, O., Srinivasan, M., Berggren, M., Crispin, X., & Mhaisalkar, S. (2010). Effect of the ionic conductivity on the performance of polyelectrolyte-based supercapacitors. Advanced Functional Materials, 20(24), 4344-4350.
Series/Report no.: Advanced functional materials
Abstract: In the emerging technology field of printed electronics, circuits are envisioned to be powered with printed energy sources, such as printed batteries and printed supercapacitors (SCs). For manufacturing and reliability issues, solid electrolytes are preferred instead of liquid electrolytes. Here, a solid-state, polyanionic proton conducting electrolyte, poly(styrenesulfonic acid) (PSS:H), is demonstrated for the first time as an effective ion conducting electrolyte medium in SCs with electrodes based on carbon nanotube (CNT) networks. The effect of the ionic conductivity in the PSS:H film of those SCs is studied at different levels of relative humidity (RH) with impedance spectroscopy, cyclic voltammetry, and galvanostatic charge-discharge techniques. High capacitance values (85 F g−1 at 80% RH) are obtained for these SCs due to the extremely high effective electrode area of the CNTs and the enhanced ionic conductivity of the PSS:H film at increasing RH level. The charging dynamics are primarily limited by the ionic conductivity of the electrolyte rather than a poor contact between the electrolyte and the CNT electrodes. The use of polyelectrolytes in SCs provides high mechanical strength and flexibility, while maintaining a high capacitance value, enabling a new generation of printable solid-state charge storage devices.
URI: https://hdl.handle.net/10356/106498
http://hdl.handle.net/10220/19184
ISSN: 1616-301X
DOI: 10.1002/adfm.201001096
Schools: School of Materials Science & Engineering 
Research Centres: Energy Research Institute @ NTU (ERI@N) 
Research Techno Plaza 
Rights: © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:ERI@N Journal Articles
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