Nanoporous PBI membranes by track etching for high temperature PEMs

被引：26

作者：

Eguizabal, A. ^{[1
]}

Sgroi, M. ^{[2
]}

Pullini, D. ^{[2
]}

Ferain, E. ^{[3
]}

Pina, M. P. ^{[1
,4
]}

机构：

[1] Univ Zaragoza, Inst Nanociencia Aragon, Zaragoza 50018, Spain

[2] Ctr Ric Fiat, I-10043 Orbassano, Italy

[3] it4ip SA, B-7180 Seneffe, Belgium

[4] CIBER BBN, Networking Res Ctr Bioengn Biomat & Nanomed, Zaragoza 50018, Spain

来源：

JOURNAL OF MEMBRANE SCIENCE | 2014年 / 454卷

关键词：

Track etching; Polybenzimidazole; Chemical modification; Phosphoric acid doping; Proton conductivity enhancement; PROTON CONDUCTING MEMBRANES; FUEL-CELLS; ION TRACKS; EXCHANGE MEMBRANES; HYBRID MEMBRANES; POLYIMIDE; POLYBENZIMIDAZOLES; POLYMERS; PEMFCS;

D O I：

10.1016/j.memsci.2013.12.006

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This article describes for the first time the preparation of conducting track-etched FBI membranes 25 mm thick with pore diameter values varying from 15 nm to 50 nm and overall porosity up to 10%. The TGA, DSC and PPR characterization results for the so obtained nanoporous membranes reveal the chemical modification of FBI upon irradiation along the track walls. A clear conduction outperforming is shown by phosphoric acid doped track-etched FBI in comparison with dense FBI counterparts. This behavior could be explained by the effective contribution of additional pathways for proton transport involving shorter benzimidazole fragments, cross-linked FBI nanodomains and free amphoteric phosphoric acid molecules settled on the pore walls. (C) 2013 Elsevier B.V. All rights reserved

引用

页码：243 / 252

页数：10

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