Anion-conducting ionomers: Study of type of functionalizing amine and macromolecular cross-linking

被引：57

作者：

Di Vona, M. L. ^{[1
]}

Narducci, R. ^{[1
,2
]}

Pasquini, L. ^{[1
,2
]}

Pelzer, K. ^{[2
]}

Knauth, P. ^{[2
]}

机构：

[1] Univ Roma Tor Vergata, Dip Sci & Tecnol Chim, I-00133 Rome, Italy

[2] Aix Marseille Univ, CNRS, MADIREL UMR 7246, F-13397 Marseille 20, France

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 26期

关键词：

Anion exchange membranes; Stability; Ionic conductivity; Chloromethylation; Cyclic diamines; POLY(ETHER ETHER KETONE); SULFONATED AROMATIC IONOMERS; FUEL-CELL APPLICATIONS; REDOX FLOW BATTERIES; EXCHANGE MEMBRANES; MECHANICAL-PROPERTIES; PROTON MOBILITY; POLYMER ELECTROLYTE; THERMAL-STABILITY; HYDROXIDE;

D O I：

10.1016/j.ijhydene.2014.06.166

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：

Anion exchange membranes (AEM) were prepared by chloromethylation and amination of polysulfone (PSU) and polyphenylsulfone (PPSU). The reaction pathways were studied by H-1 and C-13 NMR spectroscopy and ab-initio calculations. Various amines were used, including trimethylamine (TMA), 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) and 1,4-diazabicyclo[2.2.2]octane (DABCO) to study the influence of the molecular volume and the stabilizing effect of a delocalization of the positive ammonium ion charge on a second nitrogen. Furthermore, the effect of a solvothermal cross-linking on the stability of AEM was investigated. The alkaline stability, measured after treatment in 2 M KOH at 60 degrees C during 168 h, is improved by DBN and polymer reticulation. The ionic conductivity in water reaches values above 10 mS/cm with DABCO. The hydroxide ion mobility depends linearly on the hydration number. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：14039 / 14049

页数：11

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