| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 봄 (04/24 ~ 04/26, 제주국제컨벤션센터) |
| 권호 |
25권 1호, p.450 |
| 발표분야 |
에너지 환경(Energy and Environment) |
| 제목 |
Ionovoltaic Device for Monitoring Ion Dynamics in Aqueous-Phase |
| 초록 |
Recently, study of ion dynamics at liquid-solid interface within electrical double layer (EDL) has actively progressed. However, a poor understanding of the dynamics by ion diffusion poses challenges regarding monitoring technologies in aqueous-phase. An ionovoltaic device that drives by the ion dynamics converts directly liquid-solid interfacial phenomena into electrical signals without an external bias. Herein, we first introduce the aqueous-soaked ionovoltaic device to monitor various dynamic phenomena in EDL due to the ion diffusion and adsorption. In the aqueous environment, EDL forms at the liquid-solid interface by ion diffusion from ionic droplet of high concentration to bulk deionized water. As the ions diffuse, a potential difference in the semiconductor due to Coulomb interaction between the adsorbed ions and the accumulated electrons produces the electrical signal. Based on Fick's law, we investigated that an output voltage from the ionovoltaic device has a correlation with the various critical factors (φ, D, η, T). The results provide a substantial potential to develop methods for monitoring ion adsorption dynamics driven by ion diffusion. |
| 저자 |
이원형, 윤선근, 김호정, 한정협, 조용현, 김연상
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| 소속 |
서울대 |
| 키워드 |
에너지 환경 |
| E-Mail |
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| 원문파일 |
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