Recent advances in Rh/CGO co-impregnated La0.20Sr0.25Ca0.45TiO3 anodes for solid oxide fuel cells : evaluation of upscaling and durability

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.

Citation

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/10.1149/09101.1741ecst

conference

Publication

Solid Oxide Fuel Cells 16, SOFC XVI

DOI

https://doi.org/10.1149/09101.1741ecst

ISSN

1938-6737

Type

Conference item

Rights

© 2019 ECS - The Electrochemical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1149/09101.1741ecst

Description

Funding: 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”.

Collections

University of St Andrews Research

URI

http://hdl.handle.net/10023/18803