Composite Polymer Electrolytes for Fuel Cell Applications: Filler-Induced Effect on Water Sorption and Transport Properties

被引：6

作者：

Mecheri, Barbara ^{[1
,2
]}

Felice, Valeria ^{[3
]}

D'Epifanio, Alessandra ^{[1
,2
]}

Tavares, Ana C. ^{[3
]}

Licoccia, Silvia ^{[1
,2
]}

机构：

[1] Univ Roma Tor Vergata, Dept Chem Sci & Technol, I-00133 Rome, Italy

[2] Univ Roma Tor Vergata, NAST Ctr, I-00133 Rome, Italy

[3] INRS EMT, Quebec Ctr Funct Mat, Varennes, PQ J3X 1S2, Canada

来源：

CHEMPHYSCHEM | 2013年 / 14卷 / 16期

基金：

加拿大自然科学与工程研究理事会;

关键词：

composite membranes; fuel cells; polymer electrolytes; proton transport; water sorption; PROTON-EXCHANGE MEMBRANES; VAPOR SORPTION; CONDUCTIVITY; NAFION; ACID;

D O I：

10.1002/cphc.201300637

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：

Nafion- and sulfonated polysulfone (SPS)- based composite membranes were prepared by incorporation of SnO2 nanoparticles in a wide range of loading (0 equation image 35 wt.%). The composites were investigated by differential scanning calorimetry, dynamic vapor sorption and electrochemical impedance spectroscopy to study the filler effect on water sorption, water mobility, and proton conductivity. A detrimental effect of the filler was observed on water mobility and proton conductivity of Nafion-based membranes. An increase in water mobility and proton conductivity was instead observed in SPS-based samples, particularly at low hydration degree. Analysis of the water sorption isotherms and states of water revealed that the presence of SnO2 in SPS enhances interconnectivity of hydrophilic domains, while not affecting the Nafion microstructure. These results enable the design of suitable electrolyte materials that operate in proton exchange membrane fuel cell conditions.

引用

页码：3814 / 3821

页数：8

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