Investigation into the incorporation of phosphate into BaCe1-yAyO3-y/2 (A=Y, Yb, In)

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Authors

Colleges, School and Institutes

Abstract

In this paper we examine the effect of doping phosphate into BaCe1−yAyO3−y/2 (A = Y, Yb, In). The samples were analysed through a combination of X-ray diffraction, TGA, Raman spectroscopy and conductivity measurements. The results showed that phosphate could be incorporated into this system up to the 10% doping level, although this required an increased Y/Yb/In content, e.g., BaCe0.6(Y/In/Yb)0.3P0.1O2.9. The phosphate doping was, however, shown to lead to a decrease in conductivity; although at low phosphate levels high conductivities were still observed, e.g., for BaCe0.65Y0.3P0.05O2.875, σ = 4.3 × 10−3 S cm−1 at 600 °C in wet N2. In terms of the effect of phosphate incorporation on the CO2 stability, it was shown to lead to a small improvement for the In containing samples, whereas the yttrium doped compositions showed no change in CO2 stability.

Bibliographic note

This article belongs to the Special Issue Energy Storage and Conversion.

Details

Original languageEnglish
Article number00016
Pages (from-to)16-28
JournalInorganics
Volume2
Early online date29 Jan 2014
Publication statusPublished - Mar 2014

Keywords

  • perovskite, proton conductor, phosphate, cerate, oxyanions