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

被引：38

作者：

Wojnarowska, Zaneta ^{[1
,2
,3
]}

Feng, Hongbo ^{[4
]}

Diaz, Mariana ^{[5
]}

Ortiz, Alfredo ^{[5
]}

Ortiz, Inmaculada ^{[5
]}

Knapik-Kowalczuk, Justyna ^{[2
,3
]}

Vilas, Miguel ^{[6
]}

Verdia, Pedro ^{[6
]}

Tojo, Emilia ^{[6
]}

Saito, Tomonori ^{[1
]}

Stacy, Eric W. ^{[9
]}

Kang, Nam-Goo ^{[4
]}

Mays, Jimmy W. ^{[1
,4
]}

Kruk, Danuta ^{[7
]}

Wlodarczyk, Patryk ^{[8
]}

Sokoloy, Alexei P. ^{[4
,9
]}

Bocharova, Vera ^{[1
]}

Paluch, Marian ^{[2
,3
]}

机构：

[1] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

[2] Univ Silesia, Inst Phys, Uniwersytecka 4, PL-40007 Katowice, Poland

[3] Silesian Ctr Educ & Interdisciplinary Res, 75 Pulku Piechoty 1A, PL-41500 Chorzow, Poland

[4] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

[5] Univ Cantabria, Chem & Biomol Engn Dept, Avenida Castros S-N, E-39005 Santander, Spain

[6] Univ Vigo, Organ Chem Dept, Vigo 36210, Spain

[7] Univ Warmia & Mazury, Fac Math & Comp Sci, Sloneczna 54, PL-10710 Olsztyn, Poland

[8] Inst Nonferrous Met, Sowinskiego 5, PL-44100 Gliwice, Poland

[9] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

来源：

CHEMISTRY OF MATERIALS | 2017年 / 29卷 / 19期

关键词：

PROTON CONDUCTION; DYNAMICS; ELECTROLYTES; RELAXATION; SYSTEMS;

D O I：

10.1021/acs.chemmater.7b01658

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polymerized ionic liquids (polylLs), 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 polylLs in general and thereby contribute to unraveling the microscopic nature of the decoupling phenomenon in these materials.

引用

页码：8082 / 8092

页数：11