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Improved Proton Conductivity in Spark-Plasma Sintered Dense Ceramic BaZr0.5In0.5O3-delta

Istaq Ahmed (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Francis G. Kinyanjui (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Patrick Steegstra ; Z. J. Shen ; Sten G. Eriksson (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; M. Nygren
Electrochemical and Solid State Letters (1099-0062). Vol. 13 (2010), 11, p. B130-B134.
[Artikel, refereegranskad vetenskaplig]

Spark-plasma sintering method was used to prepare dense proton conducting perovskite oxide BaZr0.5In0.5O3-delta. Analysis of X-ray powder diffraction data showed that the sample adopt the cubic crystal structure having the space group Pm3m. Thermogravimetric analysis of prehydrated samples showed significant mass losses beyond 300 degrees C due to loss of protons as water vapor. Scanning electron microscope images show that the grain size of the spark-plasma sintered dense sample was smaller than that of solid-state sintered porous sample. The highest total proton conductivity (2 X 10(-3) S cm(-1) at 450 degrees C) was found for dense spark-plasma sintered sample under wet H-2 than the samples prepared by other routes.

Nyckelord: transport-properties, chemical-stability, doped bazro3, oxides, bazr0.9y0.1o2.95, conductors, hydrogen, baceo3



Denna post skapades 2010-11-16. Senast ändrad 2016-08-22.
CPL Pubid: 129122

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)
Institutionen för kemi (2001-2011)

Ämnesområden

Kemi
Materialteknik

Chalmers infrastruktur

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