A 1H NMR Pulse Gradient Spin-Echo (PGSE) Mass Transport Study of Dimethyl Oxalate and Ethylene Glycol: New Fuels for the DOFC

S. Suarez-Gustave*, S. Greenbaum, S. H. Chung, E. Peled, T. Duvdevani, A. Aharon, A. Melman

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

The mass transport represented by the self-diffusion coefficient (D) of methanol and two alternative fuels, dimethyl oxalate (DMO) and ethylene glycol (EG), in new low-cost nanoporous proton conducting membrane (PCM) was studied to aid in the development of the Direct Oxidation Fuel Cell (DOFC). As replacement fuels for methanol, EG and DMO offered lower membrane permeability indicated by the lower values of CH self-diffusion coefficient obtained for the equilibrated NP-PCM's. Electrochemical measurements indicated that the NP-PCM exhibit low crossover while retaining high protonic conductivity. Of the five NP-PCM investigated, one particular membrane that exhibited low crossover in electrochemical evaluations gave the highest OH and CH self-diffusion values almost independent of fuel type.

Original languageEnglish
Pages (from-to)370-371
Number of pages2
JournalACS Division of Fuel Chemistry, Preprints
Volume47
Issue number1
StatePublished - Mar 2002
Event224th ACS National Meeting - Orlando, FL, United States
Duration: 7 Apr 200211 Apr 2002

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