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Implantation of Nafion® ionomer into polyvinyl alcohol/chitosan composites to form novel proton-conducting membranes for direct methanol fuel cells

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1016/j.jpowsour.2009.06.022
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Affiliation
  1. National Research Council of Canada. NRC Institute for Fuel Cell Innovation
FormatText, Article
Subjectpolyvinyl alcohol; chitosan; Nafion® ionomer; methanol permeability; proton conductivity; direct methanol fuel cells
Abstract
A series of cost-effective, proton-conducting composite membranes, comprising of Nafion® ionomer, chitosan (CS), and polyvinyl alcohol (PVA), is successfully prepared. By taking advantage of the strong electrostatic interactions between Nafion® ionomer and CS component, Nafion ionomer is effectively implanted into the PVA/CS composite membranes, and improves proton conductivity of the PVA/CS composite membranes. Furthermore, this effect dramatically depends on the composition ratio of PVA/CS, and the optimum conductivity is obtained at the PVA/CS ratio of 1:1. The developed composite membranes exhibit much lower methanol permeability compared with the widely used Nafion® membrane, indicating that these novel membranes have great potential for direct methanol fuel cells (DMFCs).
Publication date
PublisherElsevier
In
  • Journal of Power Sources 194, no. 2: 730–736.
LanguageEnglish
Peer reviewedYes
NPARC number23004999
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Record identifierb6299426-130f-4ad7-9b04-02c0b9113a3d
Record created2019-01-29
Record modified2020-04-16
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