Lan, Rong and Tao, Shanwen (2009) Conductivity of a new pyrophosphate Sn0.9Sc0.1(P2O7)(1-delta) prepared by an aqueous solution method. Journal of Alloys and Compounds, 486 (1-2). pp. 380-385. ISSN 0925-8388Full text not available in this repository. (Request a copy from the Strathclyde author)
New pyrophosphate Sn0.9Sc0.1(P2O7)(1-delta) was prepared by an aqueous solution method. The structure and conductivity of Sn0.9Sc0.1(P2O7)(1-delta) have been investigated. XRD analysis indicates that Sn0.9Sc0.1(P2O7)(1-delta) exhibits a 3 x 3 x 3 superstructure. It was found that Sn0.9Sc0.1(P2O7)(1-delta) prepared by an aqueous method is not conductive. The total conductivity of Sn0.9Sc0.1(P2O7)(1-delta) in open air is 2.35 x 10(-6) and 2.82 x 10(-9) S/cm at 900 and 400 degrees C respectively. In wet air, the total conductivity is about two orders of magnitude higher (8.1 X 10(-7) S/cm at 400 degrees C) than in open air indicating some proton conduction. SnP2O7 and Sn0.92In0.08(P2O7)(1-delta) prepared by an acidic method were reported fairly conductive but prepared by similar solution methods are not conductive. Therefore, the conductivity of SnP2O7-based materials might be related to the synthetic history. The possible conduction mechanism of SnP2O7-based materials has been discussed in detail.
|Keywords:||conductivity, pyrophosphate, structure, Sn0.9Sc0.1(P2O7)(1-delta), temperature fuel cells, intermediate temperature, proton conductor, IN3+-DOPED SNP2O7, electrolyte, TIP2O7, oxides, ZRP2O7, superstructure, acid, Chemical engineering, Materials Chemistry, Mechanics of Materials, Metals and Alloys, Mechanical Engineering|
|Subjects:||Technology > Chemical engineering|
|Department:||Faculty of Engineering > Chemical and Process Engineering|
|Depositing user:||Pure Administrator|
|Date Deposited:||25 Oct 2011 12:59|
|Last modified:||04 May 2016 19:53|