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

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

doi:10.1021/acs.chemmater.7b01658

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

Journal Article · Tue Sep 05 00:00:00 EDT 2017 · Chemistry of Materials

DOI:https://doi.org/10.1021/acs.chemmater.7b01658· OSTI ID:1408578

^[1];

^[2]; Diaz, Mariana ^[3]; Ortiz, Alfredo ^[3]; Ortiz, Inmaculada ^[3];

^[4]; Vilas, Miguel ^[5]; Verdía, Pedro ^[5];

^[5];

^[6]; Stacy, Eric W. ^[7];

^[2]; Mays, Jimmy W. ^[8]; Kruk, Danuta ^[9]; Wlodarczyk, Patryk ^[10];

^[11];

^[6]; Paluch, Marian ^[4]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division; Univ. of Silesia, Katowice (Poland). Inst. of Physics; Silesian Center for Education and Interdisciplinary Research, Chorzow (Poland)
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
Univ. of Cantabria, Santander (Spain). Chemical and Biomolecular Engineering Dept.
Univ. of Silesia, Katowice (Poland). Inst. of Physics; Silesian Center for Education and Interdisciplinary Research, Chorzow (Poland)
Univ. of Vigo, Marcosende, Vigo (Spain). Organic Chemistry Dept.
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
Univ. of Warmia and Mazury, Olsztyn (Poland). Faculty of Mathematics and Computer Science
Inst. of Non-Ferrous Metals, Gliwice (Poland)
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy

Polymerized ionic liquids (polyILs), composed mostly of organic ions covalently bonded to the polymer backbone and free counterions, are considered as an 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. Here, to address this issue, we have studied three novel polymer electrolyte membrane 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. Finally, 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.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC05-00OR22725; DEC-2014/15/B/ST3/04246

OSTI ID:: 1408578

Journal Information:: Chemistry of Materials, Vol. 29, Issue 19; ISSN 0897-4756

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 30 works

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