用于质子交换膜燃料电池的新型布朗斯特酸碱离子液体基膜。

New types of Brönsted acid-base ionic liquids-based membranes for applications in PEMFCs.

作者信息

Fernicola Alessandra, Panero Stefania, Scrosati Bruno, Tamada Masahiro, Ohno Hiroyuki

机构信息

Department of Chemistry, University of Rome La Sapienza, 00185 Rome, Italy.

出版信息

Chemphyschem. 2007 May 14;8(7):1103-7. doi: 10.1002/cphc.200600782.

DOI:10.1002/cphc.200600782

PMID:17393375

Abstract

A series of ionic liquids (ILs) are prepared by neutralizing tertiary amines with N,N-bis(trifluoromethanesulfonyl)imide (HTFSI). As demonstrated by thermal and electrochemical characterizations, these ILs have very good temperature stability and a high ionic conductivity, that is, of the order of 10(-2) S cm-1. By incorporating these ILs into a poly(vinylidenfluoride-co-hexafluoropropylene) polymer matrix, membranes with a high melting temperature, high decomposition point and with an ionic conductivity of about 10(-2) S cm-1 at 140 degrees C, are obtained. These IL-based, proton-conducting membranes are proposed as new polymer electrolytes for high-temperature polymer electrolyte membrane fuel cells (PEMFCs).

摘要

通过用N,N-双（三氟甲磺酰）亚胺（HTFSI）中和叔胺来制备一系列离子液体（ILs）。热分析和电化学表征表明，这些离子液体具有非常好的温度稳定性和高离子电导率，即10^(-2) S cm^(-1) 量级。通过将这些离子液体掺入聚（偏二氟乙烯-共-六氟丙烯）聚合物基体中，可获得具有高熔点、高分解点且在140℃时离子电导率约为10^(-2) S cm^(-1) 的膜。这些基于离子液体的质子传导膜被提议作为高温聚合物电解质膜燃料电池（PEMFCs）的新型聚合物电解质。