Solid polymer electrolyte based on sulfonated polysulfone membranes and acidic silica for direct methanol fuel cells

被引：32

作者：

Lufrano, F. ^{[1
]}

Baglio, V. ^{[1
]}

Di Blasi, O. ^{[1
]}

Staiti, P. ^{[1
]}

Antonucci, V. ^{[1
]}

Arico, A. S. ^{[1
]}

机构：

[1] Ist Tecnol Avanzate Energia Nicola Giordano, CNR ITAE, I-98126 St Lucia, Italy

来源：

SOLID STATE IONICS | 2012年 / 216卷

关键词：

Direct methanol fuel cells; Sulfonated polysulfone; Composite membranes; Acidic silica; Acid filler; PROTON-EXCHANGE MEMBRANES; ELEVATED-TEMPERATURE; COPOLYMERS; DMFC; CONDUCTIVITY; TRANSPORT;

D O I：

10.1016/j.ssi.2012.03.015

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：

Composite membranes based on sulfonated polysulfone and acidic silica filler were prepared and investigated for direct methanol fuel cells. A significant influence of nanosized acidic silica on composite membrane properties was observed. A better distribution of acidic silica than bare silica was found in the membranes as well as a higher ionic conductivity of acidic silica membrane. The composite membranes based on sulfonated polysulfone modified silica (SPSf-SiO2-S) and bare silica (SPSf-SiO2) showed also an increase of DMFC performance compared to bare SPSf. The best electrochemical performance was obtained with the composite SPSf-SiO2-S membrane that showed satisfactory proton conductivity, low methanol crossover and low swelling in comparison to bare SPSf membrane. Methanol crossover currents of 20, 25 and 31 mA cm(-2) were measured for SPSf-SiO2-S, SPSf-SiO2 and SPSf membranes, respectively. The highest DMFC performance of 60 mW cm(-2) was obtained with the composite acidic silica-SPSf membrane (SPSf-SiO2-S) at 60 degrees C. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：90 / 94

页数：5

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