Modeling electrokinetics in ionic liquids: General
Abstract
Using direct numerical simulations, we provide a thorough study regarding the electrokinetics of ionic liquids. In particular, modified Poisson–Nernst–Planck equations are solved to capture the crowding and overscreening effects characteristic of an ionic liquid. For modeling electrokinetic flows in an ionic liquid, the modified Poisson-Nernst-Planck equations are coupled with Navier–Stokes equations to study the coupling of ion transport, hydrodynamics, and electrostatic forces. Specifically, we consider the ion transport between two parallel charged surfaces, charging dynamics in a nanopore, capacitance of electric double-layer capacitors, electroosmotic flow in a nanochannel, electroconvective instability on a plane ion-selective surface, and electroconvective flow on a curved ionselective surface. Lastly, we also discuss how crowding and overscreening and their interplay affect the electrokinetic behaviors of ionic liquids in these application problems.
- Authors:
-
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Physical and Computational Science Directorate
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Energy and Environment Directorate
- Univ. of Wisconsin-Madison, Madison, WI (United States). Dept. of Mechanical Engineering
- Publication Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
- OSTI Identifier:
- 1357059
- Alternate Identifier(s):
- OSTI ID: 1401767
- Report Number(s):
- PNNL-SA-121684
Journal ID: ISSN 0173-0835
- Grant/Contract Number:
- AC05-76RL01830; 325038
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Electrophoresis
- Additional Journal Information:
- Journal Volume: 38; Journal Issue: 13-14; Journal ID: ISSN 0173-0835
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 97 MATHEMATICS AND COMPUTING; 42 ENGINEERING; Electroconvective flow; Electrokinetics; Ionic liquids; Modified Poisson-Nernst-Planck equations
Citation Formats
Wang, Chao, Bao, Jie, Pan, Wenxiao, and Sun, Xin. Modeling electrokinetics in ionic liquids: General. United States: N. p., 2017.
Web. doi:10.1002/elps.201600455.
Wang, Chao, Bao, Jie, Pan, Wenxiao, & Sun, Xin. Modeling electrokinetics in ionic liquids: General. United States. https://doi.org/10.1002/elps.201600455
Wang, Chao, Bao, Jie, Pan, Wenxiao, and Sun, Xin. Sat .
"Modeling electrokinetics in ionic liquids: General". United States. https://doi.org/10.1002/elps.201600455. https://www.osti.gov/servlets/purl/1357059.
@article{osti_1357059,
title = {Modeling electrokinetics in ionic liquids: General},
author = {Wang, Chao and Bao, Jie and Pan, Wenxiao and Sun, Xin},
abstractNote = {Using direct numerical simulations, we provide a thorough study regarding the electrokinetics of ionic liquids. In particular, modified Poisson–Nernst–Planck equations are solved to capture the crowding and overscreening effects characteristic of an ionic liquid. For modeling electrokinetic flows in an ionic liquid, the modified Poisson-Nernst-Planck equations are coupled with Navier–Stokes equations to study the coupling of ion transport, hydrodynamics, and electrostatic forces. Specifically, we consider the ion transport between two parallel charged surfaces, charging dynamics in a nanopore, capacitance of electric double-layer capacitors, electroosmotic flow in a nanochannel, electroconvective instability on a plane ion-selective surface, and electroconvective flow on a curved ionselective surface. Lastly, we also discuss how crowding and overscreening and their interplay affect the electrokinetic behaviors of ionic liquids in these application problems.},
doi = {10.1002/elps.201600455},
journal = {Electrophoresis},
number = 13-14,
volume = 38,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}
Web of Science
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