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Composite proton conducting membranes based on Nafion and sulfonated SiO2 nanoparticles

Title
Composite proton conducting membranes based on Nafion and sulfonated SiO2 nanoparticles
Author
김동원
Keywords
Composite membrane; Slfonated silica; Direct methanol fuel cell; Methanol crossover; Proton conducting membrane
Issue Date
2012-10
Publisher
Elsevier Science B.V., Amsterdam.
Citation
Journal of Membrane Science, 1 October 2012, 415-416, p.696-701
Abstract
Sulfonated SiO2 nanoparticles with uniform core–shell structure are synthesized and used as functional fillers for preparing composite proton conducting membranes for direct methanol fuel cells (DMFCs). Poly(4-styrenesulfonic acid) in the shell of SiO2 nanoparticle contributes well-dispersion of the SiO2 nanoparticle in the Nafion membrane. The addition of core–shell SiO2 nanoparticles into Nafion matrix is very effective in improving membrane performance, including ion exchange capacity, proton conductivity, mechanical strength and methanol permeability. As a result, the DMFC assembled with a composite membrane exhibits superior performance as compared to a Nafion-based cell.
URI
https://www.sciencedirect.com/science/article/pii/S0376738812004413http://hdl.handle.net/20.500.11754/67495
ISSN
0376-7388
DOI
10.1016/j.memsci.2012.05.057
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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