Synthesis and proton conducting properties of zirconia bridged hydrocarbon/phosphotungstic acid hybrid materials

被引：55

作者：

Kim, JD ^{[1
]}

Honma, I ^{[1
]}

机构：

[1] AIST, Energy Elect Inst, Tsukuba, Ibaraki 3058568, Japan

来源：

ELECTROCHIMICA ACTA | 2004年 / 49卷 / 19期

关键词：

organic/inorganic hybrid; zirconia; hydrocarbon; methylene glycol; PWA; polymer electrolyte fuel cell;

D O I：

10.1016/j.electacta.2004.02.031

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Recently, the organic/inorganic hybrid materials with flexibility, thermal, and chemical stabilities are extensively studied for the application of temperature tolerant polymer electrolyte fuel cells. This paper reports the preparation and properties of sol-gel derived proton conducting organic/inorganic materials based on zirconia bridged hydrocarbon phosphotungstic acids. The materials are molecular hybrids where linear hydrocarbons such as trimethylene glycols (TMGs) or octamethylene glycols (OMGs) are covalently bonded to zirconia interface to form macromolecular organic/inorganic networks. The hybrid materials become proton conducting polymer electrolytes by the addition of 12-phosphotungstic acids. The hybrid materials showed high thermal stability, and high protonic conductivity of 4 X 10(-3) S cm(-1) under saturated humidity condition at 150 degreesC. The materials can be expected to be used for the application of temperature tolerant polymer electrolyte fuel cell. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：3179 / 3183

页数：5

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