Composite proton conducting membranes based on Nafion and sulfonated SiO2 nanoparticles
- Authors
- Kim, Jae-Hong; Kim, Sang-Kyung; Nam, Kidon; Kim, Dong-Won
- Issue Date
- Oct-2012
- Publisher
- ELSEVIER
- Keywords
- Composite membrane; Sulfonated silica; Direct methanol fuel cell; Methanol crossover; Proton conducting membrane
- Citation
- JOURNAL OF MEMBRANE SCIENCE, v.415, pp.696 - 701
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MEMBRANE SCIENCE
- Volume
- 415
- Start Page
- 696
- End Page
- 701
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/164540
- DOI
- 10.1016/j.memsci.2012.05.057
- ISSN
- 0376-7388
- 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.
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