NDLI: Suspension HVOF Spraying of Reduced Temperature Solid Oxide Fuel Cell Electrolytes

Content Provider	Springer Nature Link
Author	Oberste Berghaus, Jörg Legoux, J. G. Moreau, C. Hui, R. Decès Petit, C. Qu, W. Yick, S. Wang, Z. Maric, R. Ghosh, D.
Copyright Year	2008
Abstract	Metal-supported solid oxide fuel cells (SOFCs) composed of a Ce$_{0.8}$Sm$_{0.2}$O$_{2−δ}$ (SDC) electrolyte layer and Ni-Ce$_{0.8}$Sm$_{0.2}$O$_{2−δ}$ (Ni-SDC) cermet anode were fabricated by suspension thermal spraying on Hastelloy × substrates. The cathode, a Sm$_{0.5}$Sr$_{0.5}$CoO$_{3}$ (SSCo)-SDC composite, was screen-printed and fired in situ. The anode was produced by suspension plasma spraying (SPS) using an axial injection plasma torch. The SDC electrolyte was produced by high-velocity oxy-fuel (HVOF) spraying of liquid suspension feedstock, using propylene fuel (DJ-2700). The emerging technology of HVOF suspension spraying was explored here to produce thin and low-porosity electrolytes in an effort to develop a cost-effective and scalable fabrication technique for high-performance, metal-supported SOFCs. In-flight particle temperature and velocity were measured for a number of different gun operating conditions and standoff distances and related to the resulting microstructures. At optimized conditions, this approach was found to limit material decomposition, enhance deposition efficiency, and reduce defect density in the resulting coating, as compared to previous results reported with SPS. Produced button cells showed highly promising performance with a maximum power density (MPD) of 0.5 W cm$^{−2}$ at 600 °C and above 0.9 W cm$^{−2}$ at 700 °C, with humidified hydrogen as fuel and air as oxidant. The potential of this deposition technique to scale-up the substrate size to 50 × 50 mm was demonstrated.
Starting Page	700
Ending Page	707
Page Count	8
File Format	PDF
ISSN	10599630
Journal	Journal of Thermal Spray Technology
Volume Number	17
Issue Number	5-6
e-ISSN	15441016
Language	English
Publisher	Springer US
Publisher Date	2008-11-06
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	HVOF suspension spraying reduced temperature solid oxide fuel cells suspension thermal spraying
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Materials Chemistry Condensed Matter Physics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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