Enhanced longterm stability of aluminum solid electrolyte capacitor containing thiophene derivatives as a solid electrolyte
- Authors
- Kim, Myeongjin; Yoo, Jeeyoung; Im, Hyungu; Kim, Jooheon
- Issue Date
- 31-Dec-2012
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Aluminum solid electrolyte capacitors; Thiophene derivatives; Conductive polymer; Poly(3,4-ethylenedioxythiophene); Longterm stability
- Citation
- SYNTHETIC METALS, v.162, no.24, pp 2361 - 2369
- Pages
- 9
- Journal Title
- SYNTHETIC METALS
- Volume
- 162
- Number
- 24
- Start Page
- 2361
- End Page
- 2369
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/19926
- DOI
- 10.1016/j.synthmet.2012.11.018
- ISSN
- 0379-6779
- Abstract
- The derivatives of thiophene, 3,4-ethylene-1-methyl-2-oxy-5-thio-thiophene (EMOTT) and 3,4-ethylene-1-propyl-2-oxy-5-thio-thiophene (EPOTT), are synthesized and then, 3,4-ethylenedioxythiophene (EDOT), EMOTT, and EPOTT are polymerized with ferric 4-methylbenzenesulfonate (oxidant) to obtain PEDOT-OMBs, PEMOTT-OMBs, and PEPOTT-OMBs, respectively. The surface conductivity of PEDOT-OMBs shows the highest value among the fabricated materials because PEDOT-OMBs shows the better defined crystalline structure and the doping concentration of PEDOT-OMBs is much higher than that of PEMOTT-OMBs and PEPOTT-OMBs. Capacitance and equivalent series resistance (ESR) of PEDOT-OMBs show the slightly enhanced value compared to PEMOTT-OMBs and PEPOTT-OMBs because of high electrical conductivity of PEDOT-OMBs. The PEDOT-OMBs shows the highest decrease rate of capacitance and increase rate of ESR because the extent of separation between the PEDOT-OMBs and the dielectric is much larger than that of PEMOTT-OMBs and PEPOTT-OMBs since it has the lowest density and hardness compared to other polymerized materials. (c) 2012 Elsevier B.V. All rights reserved.
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Collections - College of Engineering > School of Chemical Engineering and Material Science > 1. Journal Articles
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