Organic silica/Nafion® composite membrane for direct methanol fuel cells

被引：72

作者：

Ren, Suzhen ^{[1
]}

Sun, Gongquan

Li, Chennan

Liang, Zhenxing

Wu, Zhimou

Jin, Wei

Qin, Xin

Yang, Xuefeng

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cells Lab, Dalian 116023, Peoples R China

[2] Dalian Univ Technol, Dept Chem, Dalian 116023, Peoples R China

来源：

JOURNAL OF MEMBRANE SCIENCE | 2006年 / 282卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Nafion (R); composite membrane; proton conductivity; methanol permeability; direct methanol fuel cell (DMFC);

D O I：

10.1016/j.memsci.2006.05.050

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The organic silica with thiol group/Nafion (R) composite membranes were prepared by casting method using various additives including HS(CH2)(3)CH3Si(OCH3)(2) (SH-), tetraethyl orthosilicate (TEOS) and HS(CH2)(3)CH3Si(OCH3)(2)-TEOS (HS-TEOS) in Nalion (R) solutions. All composite membranes had an adulterated content of 5 wt.%. SEM experiments indicated evenly distributed particles within all the Nafion (R) composite membranes. The properties of the composite membranes in terms of methanol permeability, proton conductivity, and cell performance were evaluated by single cell of direct methanol fuel cell (DMFC). The 125 mu m SH-TEOS/Nafion (R) composite membranes showed about 50% decrease of methanol crossover compared with the commercial Nafion (R) 117 membrane. The proton conductivity of the membrane lowered slightly compared with that of Nafion (R) 117. The SH-TEOS/Nafion (R) membrane was more suitable for DMFC of high concentration methanol than pure Nafion (R) membrane. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：450 / 455

页数：6

共 23 条

[1] Silicon oxide Nafion composite membranes for proton-exchange membrane fuel cell operation at 80-140° C [J].