Intermediate Temperature Ionic Conducting Composite Membrane:Sn0.94Sc0.06P2O7  and Polytetrafluoroethylene (PTFE)

doi:10.3969/j.issn.1007-2985.2014.01.016

Abstract

Abstract: An intermediate temperature ionic conducting composite membrane,Sn_0.94Sc_0.06P₂O₇and polytetrafluoroethylene (PTFE),was prepared by solid-state reaction method.The obtained composite membrane was characterized by XRD,SEM and DSC-TGA.The conductivities of composite membrane was investigated by using electrochemical workstation at the range of 75~225 ℃.The microstructure indicated that the composite membrane was well-crystallized and very compact.XRD pattern indicated that the composite membrane exhibited a single cubic phase structure of SnP2O7.The experimental atmosphere remarkably influenced the conductivity in the order：σ(dry air)<σ(wet air)<σ(wet H2).The highest conductivity was observed to be 6.5×10^-4 S·cm^-1 for the composite membrane under wet H2 atmosphere at 150 ℃.

Key words: SnP2O7, composite membrane, XRD, conductivity

WANG Hong-Tao, SUN Lin, DONG Qiu-Jing, LUO Chun-Hua. Intermediate Temperature Ionic Conducting Composite Membrane:Sn_0.94Sc_0.06P₂O₇ and Polytetrafluoroethylene (PTFE)[J]. journal6, 2014, 35(1): 68-71.

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Intermediate Temperature Ionic Conducting Composite Membrane:Sn_0.94Sc_0.06P₂O₇ and Polytetrafluoroethylene (PTFE)

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