期刊
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
卷 58, 期 11, 页码 778-791出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10601325.2021.1944200
关键词
Fuel cells; chitosan; carbon nanotubes; proton conductivity; methanol permeability
资金
- Amirkabir University of Technology, Tehran, Iran
Utilizing imidazole groups and hydrogen bonding interactions between imidazole groups in MWCNT-Im and chitosan chains has resulted in the formation of new proton conducting pathways, leading to higher selectivity parameter.
Nanocomposite polyelectrolyte membranes (PEMs), based on chitosan, and imidazole surface modified multi-walled carbon nanotubes (MWCNT-Im), were fabricated as new alternative membranes to Nafion for direct methanol fuel cell (DMFC) applications. The characterization results revealed that the imidazole groups, as proton conducting sites, can provide the better dispersion of the nanofillers, enhance the proton conductivity, reduce the methanol permeability, and finally, provides the higher selectivity parameter, compared to the commercial Nafion (R) 117 membranes. In fact, due to the hydrogen bonding interactions between the imidazole groups in MWCNT-Im and chitosan chains, new proton conducting pathways are formed resulting in the higher selectivity parameter.
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