Nafion®-polybenzimidazole (PBI) composite membranes for DMFC applications

被引：76

作者：

Ainla, Alar

Brandell, Daniel

机构：

[1] Uppsala Univ, Dept Chem Mat, SE-75121 Uppsala, Sweden

[2] Univ Tartu, Inst Technol, EE-50411 Tartu, Estonia

来源：

SOLID STATE IONICS | 2007年 / 178卷 / 7-10期

关键词：

DMFC; Nafion (R); PBI; composite membranes; proton conductivity; methanol permeability;

D O I：

10.1016/j.ssi.2007.01.014

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 (R)-PBI composites were prepared by diffusing synthesized PBI from solution phase into Nafion (R) membranes, using different concenrations and drying temperatures. In some cases, Nafion (R) was treated with diethyl amine to screen the -SO3H groups and thereby avoid the strong acid-base interactions between the polymers during diffusion. The presence of PBI in the membranes was characterized with FT-IR spectroscopy. The performance of the membranes was studied by in-plane conductivity and methanol permeability. The performance ratio (the ratio between conductivity and methanol permeability compared to Nafion (R) increased by up to 50% for the composite membranes compared to Nafion (R). (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：581 / 585

页数：5

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