Document Detail


Imparting high proton conductivity to a metal-organic framework material by controlled acid impregnation.
MedLine Citation:
PMID:  22958118     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The extensive implementation of hydrogen-powered technology today is limited by a number of fundamental problems, related to materials research. Fuel-cell hydrogen conversion technology requires proton conducting materials with high conductivity at intermediate temperature range up to 120 ºC. The development of such materials remains challenging because the proton transport of many promising candidates is based on extended microstructures of water molecules, which deteriorate at temperatures above the boiling point. Here we show the impregnation of mesoporous metal-organic framework MIL-101 by non-volatile acids H2SO4 and H3PO4. Such simple approach affords solid materials with potent proton conducting properties at moderate temperatures, which is critically important for the proper function of the on-board automobile fuel cells. The proton conductivities of the H2SO4@MIL-101 and H3PO4@MIL-101 at T = 150 ºC and low humidity outperform any other MOF-based materials and could be compared with the best proton conductors, such as Nafion.
Authors:
Valentina G Ponomareva; Konstantin A Kovalenko; Alexei P Chupakhin; Danil N Dybtsev; Elena S Shutova; Vladimir P Fedin
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-7
Journal Detail:
Title:  Journal of the American Chemical Society     Volume:  -     ISSN:  1520-5126     ISO Abbreviation:  J. Am. Chem. Soc.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503056     Medline TA:  J Am Chem Soc     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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