SPEEK/Polyimide Blends for Proton Conductive Membranes

被引：17

作者：

Maab, H. ^{[1
]}

Schieda, M. ^{[1
]}

Yave, W. ^{[1
]}

Shishatskiy, S. ^{[1
]}

Nunes, S. P. ^{[1
]}

机构：

[1] GKSS Res Ctr Geesthacht GmbH, Dept Membranes Energy, D-21502 Geesthacht, Germany

来源：

FUEL CELLS | 2009年 / 9卷 / 04期

关键词：

DMFC; FTIR Spectroscopy; Impedance Spectroscopy; Polyimide; SPEEK; POLY(ETHER ETHER KETONE); METHANOL FUEL-CELLS; COMPOSITE MEMBRANES; POLYMER BLENDS; HOMOPOLYMERS; CROSSOVER; DERIVATIVES; TRANSPORT; MIXTURE; SPEEK;

D O I：

10.1002/fuce.200800121

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A series of membranes, based on sulphonated poly(ether ether ketone) (SPEEK)/polyimide (PI) blends, was prepared at different casting conditions. They were characterised by SEM, FTIR, DMTA, DSC, TFA, water/methanol prevaporation and impedance spectroscopy. The membranes prepared at 130 degrees C from blends with 10, 20 and 30 wt.-% of PI are homogeneous, and the methanol permeabilities decreased from 28 x 10(-10) kg s(-1) m(-2) (plain SPEEK) to 7.21, 2.61 and 0.55 x 10(-10) kg m s(-1) m(-2), respectively. This corresponds to a 4- to 57-fold methanol crossover reduction. With this improvement, by the introduction of PI, the power density of SPEEK-based membranes in DMFC tests could be greatly improved.

引用

页码：401 / 409

页数：9

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