TY - GEN
T1 - Evaluation of titanium based alloys as interconnects for the light weight SOFC system
AU - Kobayashi, K.
AU - Miyata, R.
AU - Yashiro, K.
AU - Takamura, H.
AU - Yoshimi, K.
AU - Kawada, T.
AU - Hashimoto, S.
AU - Okai, K.
N1 - Funding Information:
This investigation was supported by JAXA innovation challenge program.
Publisher Copyright:
© The Electrochemical Society.
PY - 2019
Y1 - 2019
N2 - Ti alloys were evaluated as new candidates for interconnects of a lightweight SOFC which is to be mounted on aircrafts. Oxygen permeation test was performed by flowing air and He gas. No notable oxygen leak was observed. Area specific resistance (ASR) of oxide-scales formed between the alloy the electrode contacts was investigated by impedance spectroscopy. Two different electrodes, Pt and La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF), attached on the surface of Ti alloys were tested with time in air at 873 K. Although ASR at the contact with Pt electrode was small, the oxide scale grown under LSCF showed a large ASR increasing with time. After the ASR measurement, cross section between the alloy and the electrode contacts were observed by scanning electron microscope and analyzed by energy-dispersive X-ray spectroscopy. Growth of the oxide scale was found to be promoted by LSCF.
AB - Ti alloys were evaluated as new candidates for interconnects of a lightweight SOFC which is to be mounted on aircrafts. Oxygen permeation test was performed by flowing air and He gas. No notable oxygen leak was observed. Area specific resistance (ASR) of oxide-scales formed between the alloy the electrode contacts was investigated by impedance spectroscopy. Two different electrodes, Pt and La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF), attached on the surface of Ti alloys were tested with time in air at 873 K. Although ASR at the contact with Pt electrode was small, the oxide scale grown under LSCF showed a large ASR increasing with time. After the ASR measurement, cross section between the alloy and the electrode contacts were observed by scanning electron microscope and analyzed by energy-dispersive X-ray spectroscopy. Growth of the oxide scale was found to be promoted by LSCF.
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U2 - 10.1149/09101.2279ecst
DO - 10.1149/09101.2279ecst
M3 - Conference contribution
AN - SCOPUS:85073255236
T3 - ECS Transactions
SP - 2279
EP - 2290
BT - Solid Oxide Fuel Cells 16, SOFC 2019
A2 - Eguchi, K.
A2 - Singhal, S. C.
PB - Electrochemical Society Inc.
T2 - 16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019
Y2 - 8 September 2019 through 13 September 2019
ER -