journal article·2017-10-10Open access

Revealing the Charge Transport Mechanism in Polymerized Ionic Liquids: Insight from High Pressure Conductivity Studies

Zaneta Wojnarowska, Hongbo Feng, Mariana Diaz, Alfredo Ortiz, Inmaculada Ortiz, Justyna Knapik-Kowalczuk, Miguel Vilas, Pedro Verdía, Emilia Tojo, Tomonori Saito, Eric W. Stacy, Nam-Goo Kang, Jimmy W. Mays, Danuta Kruk, Patryk Wlodarczyk, Alexei P. Sokolov, Vera Bocharova, Marian Paluch

Chemistry of Materials· Volume 29· Issue 19

Abstract

Polymerized ionic liquids (polyILs), composed mostly of organic ions covalently bonded to the polymer backbone and free counterions, are considered as ideal electrolytes for various electrochemical devices, including fuel cells, supercapacitors, and batteries. Despite large structural diversity of these systems, all of them reveal a universal but poorly understood feature: a charge transport faster than the segmental dynamics. To address this issue, we studied three novel polymer electrolyte membranes for fuel cells as well as four single-ion conductors, including highly conductive siloxane-based polyIL. Our ambient and high pressure studies revealed fundamental differences in the conducting properties of the examined systems. We demonstrate that the proposed methodology is a powerful tool to identify the charge transport mechanism in polyILs in general and thereby contribute to unraveling the microscopic nature of the decoupling phenomenon in these materials.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Ionic liquids properties and applications · Conducting polymers and applications · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States

Institute of Physics, University of Silesia, Uniwersytecka 4, Katowice 40-007, Poland

Silesian Center for Education and Interdisciplinary Research, 75 Pulku Piechoty 1A, Chorzow 41-500, Poland

Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States

Chemical and Biomolecular Engineering Department, University of Cantabria, Avenida de los Castros s/n, Santander 39005, Spain

Organic Chemistry Department, University of Vigo, Marcosende, Vigo 36210, Spain

Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, United States

Faculty of Mathematics and Computer Science, University of Warmia and Mazury in Olsztyn, Sloneczna 54, Olsztyn PL-10710, Poland

Institute of Non-Ferrous Metals, Sowinskiego 5, Gliwice 44-100, Poland

Funding

Basic Energy Sciences · European Regional Development Fund · Ministerio de Econom?a y Competitividad · Narodowe Centrum Nauki · Laboratory Directed Research and Development · Ministerio de Educaci?n, Cultura y Deporte · Conseller?a de Cultura, Educaci?n e Ordenaci?n Universitaria, Xunta de Galicia

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