%0 Journal Article
%A Deibert, Wendelin
%A Ivanova, Mariya E.
%A Huang, Yuanye
%A Merkle, Rotraut
%A Maier, Joachim
%A Meulenberg, Wilhelm A.
%T Fabrication of multi-layered structures for proton conducting ceramic cells
%J Journal of materials chemistry / A
%V 10
%@ 2050-7496
%C London [u.a.]
%I RSC
%M FZJ-2021-04189
%P 2362-2373
%D 2022
%X Protonic ceramic fuel cells offer a high potential to produce electrical energy in a very efficient way. The performance of such a device among others is highly dependent on the electrolyte material and its thickness. Therefore, multilayer structures are used to reduce the electrolyte thickness down to 10–20 μm, supported by a much thicker porous anode. In this work sequential tape-casting is used to fabricate half-cells consisting of a BZCY electrolyte and a BZCY/NiO support which also serves as the anode layer. The starting powders are characterised as well as the thermal behaviour of the half-cells during heat treatment. Sintering experiments show that a temperature of T ≥ 1450 °C is needed to achieve the desired microstructure. After that a scale-up approach to a size of the half-cells of about 25 cm2 is shown. The influence of the processing temperature on the microstructure is shown by detailed XRD and SEM studies. The formation of a BaY2NiO5 transient liquid phase during the heat treatment of the cells is clearly demonstrated. Finally, the proton conductivity of the tape-cast cells shows competitive values of σ = 0.003 S cm−1 at 600 °C with the advantage of an industrially proven and up-scalable manufacturing technique.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000700910700001
%R 10.1039/D1TA05240C
%U https://juser.fz-juelich.de/record/902340
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