Crosslinked sulfonated poly(vinyl alcohol)/sulfonated multi-walled carbon nanotubes nanocomposite membranes for direct methanol fuel cells
- Authors
- Yun, Sungjin; Im, Hyungu; Heo, Yusun; Kim, Jooheon
- Issue Date
- 15-Sep-2011
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Fuel cell; Direct methanol fuel cell; Poly(vinyl alcohol); Multi-walled carbon nanotube
- Citation
- JOURNAL OF MEMBRANE SCIENCE, v.380, no.1-2, pp 208 - 215
- Pages
- 8
- Journal Title
- JOURNAL OF MEMBRANE SCIENCE
- Volume
- 380
- Number
- 1-2
- Start Page
- 208
- End Page
- 215
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/21262
- DOI
- 10.1016/j.memsci.2011.07.010
- ISSN
- 0376-7388
1873-3123
- Abstract
- Organic/inorganic membranes based on sulfonated poly(vinyl alcohol) (s-PVA) and sulfonated multi-walled carbon nanotubes (s-MWNTs) nanocomposite membranes (SPVA) with various compositions were prepared for use as proton exchange membranes in direct membrane fuel cells (DMFCs). The SPVA membranes were cross-linked with both glutaraldehyde and s-MWNTs to reduce the level of water (methanol) uptake. The unreacted carboxylic acid and sulfonic acid of the s-MWNTs were also cross-linked with the hydroxyl groups of the PVA matrix. The ion exchange capacity (IEC) and proton conductivity of the membranes initially increased with increasing amount of s-MWNTs, because the s-MWNTs have abundant sulfonic acid groups. The composite membranes exhibited excellent proton conductivity ranging from 0.032 to 0.075 S/cm as well as low methanol permeability ranging from 1.12 x 10(-8) to 3.32 x 10(-9) cm(2) s(-1) at 60. (C) 2011 Elsevier B.V. All rights reserved.
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Collections - College of Engineering > School of Chemical Engineering and Material Science > 1. Journal Articles
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