Nafion/zeolite nanocomposite membrane by in situ crystallization for a direct methanol fuel cell

被引：252

作者：

Chen, Zhongwei

Holmberg, Brett

Li, Wenzhen

Wang, Xin

Deng, Weiqiao

Munoz, Ronnie

Yan, Yushan ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Environm Chem & Engn, Bourns Coll Engn, Ctr Environm Res & Technol, Riverside, CA 92521 USA

[2] CALTECH, Mat & Proc Simulat Ctr, Pasadena, CA 91125 USA

来源：

CHEMISTRY OF MATERIALS | 2006年 / 18卷 / 24期

关键词：

D O I：

10.1021/cm060841q

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：

A method for preparing Nafion/ acid functionalized zeolite Beta (NAFB) nanocomposite membranes by in situ hydrothermal crystallization is described. The nanocomposite membranes have a slightly lower proton conductivity but a markedly lower methanol permeability (ca. 40% reduction). When tested with 1 M methanol feed, the direct methanol fuel cells (DMFCs) with the NAFB composite membranes have a slightly higher open circuit voltage (OCV; 3%) and much higher maximum power density (21%) than those with the pure Nafion 115 membranes. With a higher methanol concentration (5 M), the DMFCs with the NAFB composite membranes demonstrate a 14% higher OCV and a 93% higher maximum power density than those with the pure Nafion 115 membranes. Compared with the commercial Nafion 115 membranes, the NAFB composite membranes have slightly lower tensile strength but higher elastic modulus.

引用

页码：5669 / 5675

页数：7

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