Comparative Studies on Two-Electrode Symmetric Supercapacitors Based on Polypyrrole:Poly(4-styrenesulfonate) with Different Molecular Weights of Poly(4-styrenesulfonate)
- Authors
- Han, Hoseong; Lee, Jun Seop; Cho, Sunghun
- Issue Date
- Feb-2019
- Publisher
- MDPI
- Keywords
- supercapacitor; coin cell; conducting polymer; polypyrrole; pss
- Citation
- POLYMERS, v.11, no.2
- Journal Title
- POLYMERS
- Volume
- 11
- Number
- 2
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/1924
- DOI
- 10.3390/polym11020232
- ISSN
- 2073-4360
- Abstract
- Poly(4-styrenesulfonate)-conducting polymer (PSS-CP) is advantageous for thin-film electrode manufacturing due to its high conductivity, high charge storage, structural stability, and excellent ink dispersion. In this work, comparative studies of two-electrode symmetric supercapacitors using Polypyrrole:Poly(4-styrenesulfonate) (PPy:PSS), with different molecular weights (M-w's) of Poly(4-styrenesulfonate) (PSS) as the electrodes, were performed. PPy:PSS can be easily prepared using a simple solution process that enables the mass production of thin-film electrodes with improved electrical and electrochemical properties. As-prepared PPy:PSS, with different PSS molecular weights, were assembled into two-electrode supercapacitors based on coin cell structures. It was confirmed that the electrical and electrochemical properties of PPy:PSS were improved with increasing PSS molecular weight. The coin cell, using PPy:PSS with a PSS molecular weight of 1.0 x 10(6) g/mol, exhibited higher areal capacitance (175.3 mF/cm(2)), higher volumetric capacitance (584.2 F/cm(3)), and longer cycling stability (86.3% after 5000 cycles) compared to those of PPy:PSS with PSS molecular weights of 2.0 x 10(5) and 7.0 x 10(4) g/mol. This work provides an efficient approach for producing cost-effective and miniaturized supercapacitors with high conductivity and high specific capacitance for practical applications in a variety of electronic devices.
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Collections - 공과대학 > 신소재공학과 > 1. Journal Articles
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