High proton conductivity at low relative humidity in an anionic Fe-based metal-organic framework

A metal-organic framework, termed VNU-15 (VNU = Vietnam National University), was synthesized and subsequent detailed structural analysis revealed that the crystalline structure adopted the fob topology. Due to integrated sulphate ligands accompanied by hydrogen-bonded dimethylammonium ions that lin...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2016-01, Vol.4 (1), p.3638-3641
Main Authors: Tu, Thach N, Phan, Nghi Q, Vu, Thanh T, Nguyen, Ha L, Cordova, Kyle E, Furukawa, Hiroyasu
Format: Article
Language:English
Subjects:
Channels
Crystal structure
Hydrogen bonding
Ligands
Metal-organic frameworks
Porosity
Relative humidity
Vietnam
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Summary:A metal-organic framework, termed VNU-15 (VNU = Vietnam National University), was synthesized and subsequent detailed structural analysis revealed that the crystalline structure adopted the fob topology. Due to integrated sulphate ligands accompanied by hydrogen-bonded dimethylammonium ions that lined the pore channels of VNU-15, the proton conductivity of this material reached 2.90 × 10 −2 S cm −1 at 95 °C and 60% relative humidity. Remarkably, the high proton conductivity of VNU-15 was maintained under these conditions, without any appreciable loss, for 40 h. High proton conductivity (2.90 × 10 −2 S cm −1 ) in an anionic Fe-based metal-organic framework was reached under more practical operating conditions (95 °C and 60% RH).
ISSN:2050-7488
2050-7496
DOI:10.1039/c5ta10467j