상세정보
학술지
Electrochemical Capacitor with Chemically Polymerized Conducting Polymer based on Activated Carbon as Hybrid Electrodes
- 발행일
- 200509
- 출처
- Synthetic Metals, v.153 no.1-3, pp.89-92
- ISSN
- 0379-6779
- 출판사
- Elsevier
- 협약과제
- 04MB1300, 차세대 PC용 이오닉스 소자 개발(리튬금속 고분자 2차전지 기술개발), 류광선
- 초록
- ACP/PAn hybrid electrodes for surpercapacitors were fabricated by adsorption of aniline monomers on the surface of activated carbon powders (ACP) and their polymerization by using a chemical method. Their capacitance performances were investigated in the 1M H2SO4 aqueous electrolyte solution by means of cyclic voltammetry and impedance spectroscopy. The cyclic voltammetric results showed that the ACP/PAn electrodes gave an increased specific capacitance value of 273 F/, which was larger than the capacitance of the ACP, approximately 193 F/g. However, impedance spectroscopic data showed better response time and higher frequency capacitance performance in ACP than ACP/PAn electrodes. This result means that the redox reaction of PAn is rate-determined step and can not contribute for charge storage at high frequency range over 1 Hz. © 2005 Elsevier B.V. All rights reserved.
- KSP 제안 키워드
- Activated carbon(AC), Aqueous electrolyte solution, Capacitance performance, Capacitance value, Charge storage, Chemical method, Conducting polymers, Cyclic voltammetric, Cyclic voltammetry, Electrochemical Capacitor, Frequency Range