Title
Composite Silica/Nafion® Membranes Prepared By Tetraethylorthosilicate Sol-Gel Reaction And Solution Casting For Direct Methanol Fuel Cells
Keywords
Composite membranes; Direct methanol fuel cell (DMFC); Silica/Nafion®; Sol-gel
Abstract
Composite silica/Nafion® membranes were prepared using a tetraethylorthosilicate (TEOS) hydrolysis sol-gel reaction followed by solution casting. Physico-chemical properties of the composite membranes were characterized by TGA, XRD, FT-IR, SEM-EDX and water uptake. Membranes were investigated in direct methanol fuel cells (DMFCs). Lower silica loadings (3 and 5 wt.%) in the composite membranes helped to inhibit methanol crossover through the membrane, while higher silica loadings demonstrated a smaller contribution to lowering the methanol crossover. Proton conductivity of the composite membranes decreased with increasing silica content, in spite of the increasing membrane water uptake. DMFC performance using the composite membrane with 5 wt.% silica loading was higher than using a pure Nafion® membrane. © 2005 Elsevier B.V. All rights reserved.
Publication Date
3-15-2006
Publication Title
Journal of Membrane Science
Volume
272
Issue
1-2
Number of Pages
116-124
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1016/j.memsci.2005.07.026
Copyright Status
Unknown
Socpus ID
31744449091 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/31744449091
STARS Citation
Jiang, Ruichun; Kunz, H. Russell; and Fenton, James M., "Composite Silica/Nafion® Membranes Prepared By Tetraethylorthosilicate Sol-Gel Reaction And Solution Casting For Direct Methanol Fuel Cells" (2006). Scopus Export 2000s. 8479.
https://stars.library.ucf.edu/scopus2000/8479