TY - JOUR
AU - Deibert, Wendelin
AU - Ivanova, Mariya E.
AU - Huang, Yuanye
AU - Merkle, Rotraut
AU - Maier, Joachim
AU - Meulenberg, Wilhelm A.
TI - Fabrication of multi-layered structures for proton conducting ceramic cells
JO - Journal of materials chemistry / A
VL - 10
SN - 2050-7496
CY - London [u.a.]
PB - RSC
M1 - FZJ-2021-04189
SP - 2362-2373
PY - 2022
AB - 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.
LB - PUB:(DE-HGF)16
UR - <Go to ISI:>//WOS:000700910700001
DO - DOI:10.1039/D1TA05240C
UR - https://juser.fz-juelich.de/record/902340
ER -
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