Document Detail

Characterization of anion exchange ionomers in hybrid polymer electrolyte fuel cells.
MedLine Citation:
PMID:  21069660     Owner:  NLM     Status:  In-Data-Review    
Anion exchange ionomers (AEI) synthesized here were characterized by use of a novel fuel cell configuration. The new analysis method involves assembling the AEI electrode of interest as the cathode in a hybrid, acid/alkaline, fuel cell configuration. The hybrid cell includes a conventional proton conducting anode/membrane half-cell along with the anionic conductor of interest at the cathode. Electrochemical impedance spectroscopy and voltammetry were used to evaluate the performance of the hybrid AEI-containing fuel cell with H(2) and O(2). In particular, the AEI electrode response in impedance spectroscopy was easily identified because the contributions from other components are largely minimized in the presented hybrid cell configuration. The properties of ionomers used in the AEI electrode were shown to have a substantial effect on the electrode performance. Low catalyst utilization, due to high water uptake and low conductivity, was identified as the major causes of poor performance in AEI electrodes.
Murat Unlü; Junfeng Zhou; Irene Anestis-Richard; Paul A Kohl
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  ChemSusChem     Volume:  3     ISSN:  1864-564X     ISO Abbreviation:  ChemSusChem     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-12-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101319536     Medline TA:  ChemSusChem     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1398-402     Citation Subset:  IM    
School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0100 (USA), Fax: (+1) 404-894-2866.
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