Dynamic analysis of the extended space charge layer using chronopotentiometric measurements
2020 · Micro and Nano Systems Letters
저자
Inhee Cho, Hyomin Lee, 김성재 (Sung Jae Kim)
연구주제
Electrostatics and Colloid Interactions · Membrane-based Ion Separation Techniques · Microfluidic and Capillary Electrophoresis Applications
NTIS 과학기술표준분류
에너지/자원만에너지·환경·원자력 확장
배정 근거: AI 키워드가 잡은 NTIS 과제의 분류(정책 연계 맵과 같은 방법).
AI 연구 키워드·방법
전기이중층 전기삼투 유동 이온농도분극(ICP) space charge layer
chronopotentiometry equivalent circuit model
키워드 (OpenAlex)
electric double layer chronopotentiometry interfacial charge electroosmotic flow equivalent circuit model
초록
Abstract In this paper, we experimentally verified the length (LESC) and the concentration (cESC) of the extended space charge (ESC) layer in front of the electrical double layer (EDL) using the chronopotentiometric measurement and the equivalent circuit model analysis. From the experimentation, the coupled-response of the EDL and the ESC layer was discriminated from the contribution of electro-osmotic flow (EOF). In addition, we derived the potential differences across the ESC (VESC) layer using the circuit model of the ICP layer under rigorous consideration of ESC and EDL. As a result, we obtained that VESC was linearly proportional to the square of the applied current (iapplied). Hence, LESC and cESC were quantitatively provided, where LESC is linear to the iapplied and cESC is constant regardless of iapplied. Thus, this experimentation could not only clarify an essential ICP theory b…
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교수 1
연구주제 1
Electrostatics and Colloid Interactions
정책분야 1
키워드 3
이온농도분극(ICP) · 전기삼투 유동 · 전기이중층