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

作者:Tu Thach N; Phan Nghi Q; Vu Thanh T; Nguyen Ha L; Cordova Kyle E*; Hiroyasu Furukawa*
来源:Journal of Materials Chemistry A, 2016, 4(10): 3638-3641.
DOI:10.1039/c5ta10467j

摘要

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 x 10(-2) S cm(-1) at 95 degrees 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.