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Title: Modeling electrokinetics in ionic liquids: General

Journal Article · · Electrophoresis
 [1];  [2];  [3];  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Physical and Computational Science Directorate
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Energy and Environment Directorate
  3. Univ. of Wisconsin-Madison, Madison, WI (United States). Dept. of Mechanical Engineering

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.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
Grant/Contract Number:
AC05-76RL01830; 325038
OSTI ID:
1357059
Alternate ID(s):
OSTI ID: 1401767
Report Number(s):
PNNL-SA-121684
Journal Information:
Electrophoresis, Vol. 38, Issue 13-14; ISSN 0173-0835
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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Cited By (2)

The effects of electrostatic correlations on the ionic current rectification in conical nanopores journal June 2019
Theory of Surface Forces in Multivalent Electrolytes journal July 2019

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