| 학회 |
한국공업화학회 |
| 학술대회 |
2009년 봄 (04/15 ~ 04/17, 호텔인터불고(대구)) |
| 권호 |
13권 1호 |
| 발표분야 |
특별심포지엄 2-전기화학 에너지 환경 소재 및 소자 |
| 제목 |
Impedance analysis for electrochemically active surface area of Pt electrodes |
| 초록 |
Electrochemically active surface area (ECA) a polycrystalline Pt electrode is measured from the pseudo-capacitance (Cp) values that are associated with hydrogen underpotential deposition. The potential-dependent Cp values are extracted from the raw impedance data by removing the interferences. Three different approaches have been made: i) By using the proportionality between capacitance and area of the capacitive peak on imaginary capacitance plots, ii) by complex non-linear least squares (CNLS) fitting with appropriate equivalent circuits, and iii) by using the modified Kramers-Kronig (K-K) relation. |
| 저자 |
오승모 |
| 소속 |
서울대 |
| 키워드 |
Electrochemical impedance spectroscopy (EIS); Complex capacitance analysis; Adsorption pseudo-capacitance; Electrochemically active surface area (ECA); Underpotential deposition
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| E-Mail |
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