Introduction of Sulfate to Stabilize the n = 3 Ruddlesden-Popper System Sr4Fe3O10-δ, as a Potential SOFC Cathode. (10th July 2019)

• Record Type: Journal Article
• Authors: Jarvis, Abbey; Berry, Frank J.; Marco, Jose F.; Slater, Peter R.
• Is Part Of: ECS transactions. Volume 91:Number 1(2019)
• Page Start: 1467
• Page End: 1476
• Publication Date: 2019-07-10
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/09101.1467ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : In this paper we report the successful incorporation of sulfate into the triple layer (n = 3) Ruddlesden-Popper system Sr4 Fe3 O10-δ, with characterisation of these materials by X-ray diffraction, Mössbauer spectroscopy, and conductivity measurements. Significantly, the incorporation of SO4 2- into the middle perovskite layer leads to the stabilization of this Ruddlesden-Popper phase, which cannot be prepared without sulfate doping, thus highlighting the potential of oxyanion doping as a strategy to synthesise new phases of interest for solid oxide fuel cells.