Manufacturing of high performance solid oxide fuel cells (SOFCs) with atmospheric plasma spraying (APS) and plasma spray-physical vapor deposition (PS-PVD)

Marcano, D.; Mauer, G.; Vaßen, R.; Weber, A.

doi:10.1016/j.surfcoat.2016.10.088

Journal Article

FZJ-2018-00184

Manufacturing of high performance solid oxide fuel cells (SOFCs) with atmospheric plasma spraying (APS) and plasma spray-physical vapor deposition (PS-PVD)

Marcano, D. (Corresponding author)FZJ* ; Mauer, G.FZJ* ; Vaßen, R.FZJ* ; Weber, A.

2017
Elsevier Science Amsterdam [u.a.]

Surface and coatings technology 318, 170 - 177 (2017) [10.1016/j.surfcoat.2016.10.088]

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Please use a persistent id in citations: doi:10.1016/j.surfcoat.2016.10.088

Abstract: In the present work, a metal supported SOFC half-cell was fabricated by means of plasma spray. As support, a Fe-Cr alloy with a porous structure was used. The anode and electrolyte were applied using atmospheric plasma spray (APS) and plasma spray-physical vapor deposition (PS-PVD), respectively. A standard Ni/YSZ (coat mix) powder was used for the anode and the cathode layer consisted of a screen-printed La0.58Sr0.4Co0.2Fe0.8O3 − δ (LSCF) non-sintered paste. The development of a thin, dense, gas-tight 8YSZ electrolyte was the key issue of this work. Analysis of microstructure, phases, and gas-tightness were carried out for various processing conditions. Different parameters were varied, such as: powder feed rate and carrier gas flow rate, robot speed, spraying distance and plasma gas composition. A partially reduced anode coating with 9% porosity and a gas-tight 26 μm electrolyte layer were obtained. Such an assembly was air-tight and delivered a cell with an acceptable open circuit voltage (OCV) and an excellent performance of 1 A/cm2 at 800 °C and 0.7 V.

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