High-Temperature Ionic-Conducting Material: Advanced Structure and Improved Performance

High-Temperature Ionic-Conducting Material: Advanced Structure and Improved Performance

A new composite proton-conducting material based on the association of an ionic liquid and a porous polymer support was prepared with the aim of applying it as an electrolyte in a proton exchange membrane fuel cell (PEMFC) at elevated temperature (130 °C). The porous support was made from a high gla...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physical chemistry. C Vol. 117; no. 30; pp. 15552 - 15561
Main Authors: Langevin, Dominique, Nguyen, Quang Trong, Marais, Stéphane, Karademir, Séma, Sanchez, Jean-Yves, Iojoiu, Cristina, Martinez, Mathieu, Mercier, Régis, Judeinstein, Patrick, Chappey, Corinne
Format: Journal Article
Language:English
Published: Columbus, OH American Chemical Society 01-08-2013
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Physics
Structure and morphology; thickness
Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)
Thin film structure and morphology
Ionic conduction
Scanning electron microscopy
Porous materials
Permeation
Thermogravimetry
High temperature
Glass transition temperature
Thermal stability
Thin films
Composite materials
Sulfonic acids
Vapor phase
Phase separation
Tertiary amine
Proton conductivity
Electrolytes
Polymers
Proton exchange membrane fuel cells
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new composite proton-conducting material based on the association of an ionic liquid and a porous polymer support was prepared with the aim of applying it as an electrolyte in a proton exchange membrane fuel cell (PEMFC) at elevated temperature (130 °C). The porous support was made from a high glass-transition temperature polymer (Tg) by using the vapor-induced phase separation (VIPS) method in conditions leading to highly interconnected porous films. The ionic liquid tested was obtained by the reaction of a sulfonic acid with a tertiary amine and presents enough high-temperature stability to be used at elevated temperatures. Composite samples were prepared by immersing pieces of porous film in the ionic liquids under test. The porous support was characterized by scanning electron microscopy (SEM), gas permeation, and thermogravimetric analysis (TGA) tests, and the composite samples were characterized by mechanical and proton-conduction measurements. At 130 °C, this new material exhibits proton conductivity (20 mS cm–1) below, but very close to, that of the pure ionic liquid (31 mS cm–1) and presents, up to at least 150 °C, a storage modulus exceeding 200 MPa. This is very promising considering the PEMFC applications.
ISSN:1932-7447
1932-7455
DOI:10.1021/jp312575m