A PFSA Composite Membrane with Sulfonic Acid Functionalized TiO2 Nanotubes for Polymer Electrolyte Fuel Cells and Water Electrolysers

被引：6

作者：

Wu, X. ^{[1
,2
]}

Scott, K. ^{[1
]}

机构：

[1] Newcastle Univ, Sch Chem Engn & Adv Mat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England

来源：

FUEL CELLS | 2013年 / 13卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

Composite Membrane; PEMFC; PEMWE; Polymer Electrolyte Membrane; Titanate Nanotube; Titania; ELEVATED-TEMPERATURE; TITANATE NANOTUBES;

D O I：

10.1002/fuce.201200040

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Titanate nanotubes (TiO2-NT) were functionalized with sulfonic acid functional groups and characterized with Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). Results confirmed that sulfonic acid groups were grafted onto TiO2-NT with a uniform distribution. When the functionalized titanate nanotube (F-TiO2-NT) was incorporated in perfluorosulfonic acid membranes, the membrane conductivity and water uptake were improved. Polymer electrolyte membrane (PEM) fuel cells using 5wt.% F-TiO2-NT incorporated composite membrane exhibited a peak power density of 429mWcm(-2) with non-humidified O-2 at 90 degrees C, which is about four times higher than that with Nafion 117 membrane at identical conditions. PEMWE with 5wt.% F-TiO2-NT incorporated composite membrane achieved 1,000mAcm(-2) current density at voltages below 1.6V at 90 degrees C without back pressurizing.

引用

页码：1138 / 1145

页数：8

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