Modified infiltration of solvated ions and ionic liquid in a nanoporous carbon |
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Authors: | Weiyi Lu Taewan Kim Cang Zhao Xi Chen Yu Qiao |
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Institution: | 1. Department of Structural Engineering, University of California—San Diego, La Jolla, CA, 92093-0085, USA 2. Program of Materials Science & Engineering, University of California—San Diego, La Jolla, CA, 92093, USA 3. Department of Earth & Environmental Engineering, Columbia University, New York, NY, 10027, USA
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Abstract: | Infiltration of ions in a nanoporous carbon is responsive to the external electric field. If the liquid phase is an aqueous solution of electrolyte, the effective solid-liquid interfacial tension decreases as the voltage rises, similar to the electrowetting phenomenon at a large graphite surface. If the liquid phase is an ionic liquid, however, the effective interfacial tension increases with the voltage. The accessible nanopore volume is not dependent on the electric field. The unique phenomena should be related to the confinement effects of the nanopore inner surfaces. |
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