Recent advances in Rh/CGO co-impregnated La0.20Sr0.25Ca0.45TiO3 anodes for solid oxide fuel cells : evaluation of upscaling and durability
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Recent research carried out at the University of St Andrews and HEXIS has focussed on a novel A-site deficient perovskite: La0.20Sr0.25Ca0.45TiO3 (LSCTA-) as a potential replacement material for the Ni-based cermet. LSCTA- is a mixed ionic and electronic conductor, which exhibits a high effective electrical conductivity for this class of limited conductivity perovskite, allowing a single-phase anode 'backbone' to be employed and removing the challenges associated with utilisation of a structural Ni phase. Co-impregnating this 'backbone' with a variety of transition/platinum group metals, as well as Ce0.80Gd0.20O1.90 (CG20), produces intricately nanostructured anode materials with high electrocatalytic activity for fuel oxidation. Here we provide an overview of the first 'all-oxide' SOFC stack test at HEXIS, as well as an in depth exploration of the 'powder-to-power' development of these co-impregnated LSCTA- anodes including: ceramic processing, catalyst selection, short-term testing, characterisation by AC impedance spectroscopy and durability testing of promising candidate catalyst systems.
Price , R , Weissen , U , Verbraeken , M C , Grolig , J G , Mai , A & Irvine , J T S 2019 , Recent advances in Rh/CGO co-impregnated La 0.20 Sr 0.25 Ca 0.45 TiO 3 anodes for solid oxide fuel cells : evaluation of upscaling and durability . in K Eguchi & S C Singhal (eds) , Solid Oxide Fuel Cells 16, SOFC XVI . ECS Transactions , no. 1 , vol. 91 , Electrochemical Society, Inc. , pp. 1741-1750 , 16th International Symposium on Solid Oxide Fuel Cells, SOFC XVI , Kyoto , Japan , 8/09/19 . https://doi.org/10.1149/09101.1741ecstconference
Solid Oxide Fuel Cells 16, SOFC XVI
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DescriptionFunding: University of St Andrews and HEXIS AG; UK EPSRC grants: EP/M014304/1 “Tailoring of Microstructural Evolution in Impregnated SOFC Electrodes” and EP/L017008/1 “Capital for Great Technologies”.
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