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Polymer electrolyte membranes with exceptional conductivity anisotropy via holographic polymerization
Journal article   Peer reviewed

Polymer electrolyte membranes with exceptional conductivity anisotropy via holographic polymerization

Derrick M. Smith, Shan Cheng, Wenda Wang, Timothy J. Bunning and Christopher Y. Li
Journal of power sources, v 271, pp 597-603
20 Dec 2014

Abstract

Chemistry Chemistry, Physical Electrochemistry Energy & Fuels Materials Science Materials Science, Multidisciplinary Physical Sciences Science & Technology Technology
Polymer electrolyte membranes using an ionic liquid as electrolyte with an ionic conductivity anisotropy of 5000 have been fabricated using a holographic polymerization nanomanufacturing technique. The resultant structure is referred to as holographic polymer electrolyte membranes (hPEMs), which are comprised of alternating nanolayers of a room temperature ionic liquid and crosslinked polymer resin, confirmed under TEM imaging. These hPEMs also show no reduction in room temperature conductivity with respect to the loaded ionic liquid when characterized in the plane of ionic liquid nanolayers. At elevated temperatures with the optimal electrolyte volume loading, calculation shows that the free ion concentration is higher than the pure ionic liquid, suggesting that the photopolymer dual-functionalizes as a loadbearing scaffold and an ion-complexing agent, allowing for more ions to participate in charge transfer. These hPEMs provide a promising solution to decoupling mechanical enhancement and ion transport in polymer electrolyte membranes. (C) 2014 Elsevier B.V. All rights reserved.

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Collaboration types
Domestic collaboration
Web of Science research areas
Chemistry, Physical
Electrochemistry
Energy & Fuels
Materials Science, Multidisciplinary
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