Thermal cycling and electrochemical characteristics of solid oxide fuel cell supported on stainless steel with a new 3-phase composite anode
SCIE
SCOPUS
- Title
- Thermal cycling and electrochemical characteristics of solid oxide fuel cell supported on stainless steel with a new 3-phase composite anode
- Authors
- AMIR, MASOUD DAYAGHI; KUN, JOONG KIM; Kim, S.J.; Kim, S.; Bae, H.; Choi, G.M.
- Date Issued
- 2017-06
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- We report design, fabrication method, and fast thermal-cycling ability of solid oxide fuel cells (SOFCs) that use stainless steel (STS) as a support, and a new 3-phase anode. La and Ni co-doped SrTiO3 (La0.2Sr0.8Ti0.9Ni0.1O3-d, LSTN), replaces some of the Ni in conventional Ni-yttria stabilized zirconia (YSZ) anode; the resultant LSTN-YSZ-Ni 3-phase-composite anode is tested as a new reduction (or decomposition)-resistant anode of STS-supported SOFCs that can be co-fired with STS. A multi-layered cell with YSZ electrolyte (thickness ��5?��m), composite anode, STS-cermet contact-layer, and STS support is designed, then fabricated by tape casting, lamination, and co-firing at 1250?��C in reducing atmosphere. The maximum power density (MPD) is 325?mW?cm?2 at 650?��C; this is one of the highest among STS-supported cells fabricated by co-firing. The cell also shows stable open-circuit voltage and Ohmic resistance during 100 rapid thermal cycles between 170 and 600?��C. STS support minimizes stress and avoids cracking of electrolyte during rapid thermal cycling. The excellent MPD and stability during thermal cycles, and promising characteristics of SOFC as a power source for vehicle or mobile devices that requires rapid thermal cycles, are attributed to the new design of the cell with new anode structure. ? 2017 Elsevier B.V.
- Keywords
- Anodes; Automobile manufacture; Cermets; Electrodes; Electrolytes; Fabrication; Fuel cells; Nickel; Ohmic contacts; Open circuit voltage; Solid electrolytes; Stainless steel; Strontium titanates; Thermal cycling; Yttria stabilized zirconia; Zirconia; Cell design; Co-firing; Electrochemical characteristics; Metal supported; Rapid thermal cycling; Solid oxide fuel cells (SOFCs); Tape casting; Yttria-stabilized zirconias (YSZ); Solid oxide fuel cells (SOFC)
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/92094
- DOI
- 10.1016/j.jpowsour.2017.04.022
- ISSN
- 0378-7753
- Article Type
- Article
- Citation
- JOURNAL OF POWER SOURCES, vol. 354, page. 74 - 84, 2017-06
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