TY - GEN
T1 - Low-temperature operating micro solid oxide fuel cells with perovskite-type proton conductors
AU - Yugami, Hiroo
AU - Kubota, Kensuke
AU - Inagaki, Yu
AU - Iguchi, Fumitada
AU - Tanaka, Shuji
AU - Sata, Noriko
AU - Esashi, Masayoshi
N1 - Funding Information:
This study was performed in the R&D Center of Excellence of Integrated Microsystems, Tohoku University under the program “Formation of Innovation Center for Fusion of Advanced Technologies” supported by Special Coordination Funds for Promoting Science and Technology.
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
N2 - Micro-solid oxide fuel cells (Micro-SOFCs) with yttrium-doped barium zirconate (BZY) and strontium and cobalt-doped lanthanum scandate (LSScCo) electrolytes were fabricated for low-temperature operation at 300 °C The micro-SOFC with a BZY electrolyte could operate at 300°C with an open circuit voltage (OCV) of 1.08 V and a maximum power density of 2.8 mW/cm 2. The micro-SOFC with a LSScCo electrolyte could operate at 370°C; its OCV was about 0.8 V, and its maximum power density was 0.6 mW/cm . Electrochemical impedance spectroscopy revealed that the electrolyte resistance in both the micro-SOFCs was lower than 0.1 Ωcm 2, and almost all of the resistance was due to anode and cathode reactions. Although the obtained maximum power density was not sufficient for practical applications, improvement of electrodes will make these micro-SOFCs promising candidates for power sources of mobile electronic devices.
AB - Micro-solid oxide fuel cells (Micro-SOFCs) with yttrium-doped barium zirconate (BZY) and strontium and cobalt-doped lanthanum scandate (LSScCo) electrolytes were fabricated for low-temperature operation at 300 °C The micro-SOFC with a BZY electrolyte could operate at 300°C with an open circuit voltage (OCV) of 1.08 V and a maximum power density of 2.8 mW/cm 2. The micro-SOFC with a LSScCo electrolyte could operate at 370°C; its OCV was about 0.8 V, and its maximum power density was 0.6 mW/cm . Electrochemical impedance spectroscopy revealed that the electrolyte resistance in both the micro-SOFCs was lower than 0.1 Ωcm 2, and almost all of the resistance was due to anode and cathode reactions. Although the obtained maximum power density was not sufficient for practical applications, improvement of electrodes will make these micro-SOFCs promising candidates for power sources of mobile electronic devices.
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U2 - 10.1557/opl.2011.1397
DO - 10.1557/opl.2011.1397
M3 - Conference contribution
AN - SCOPUS:84860169578
SN - 9781618395276
T3 - Materials Research Society Symposium Proceedings
SP - 49
EP - 54
BT - Protons in Solids
T2 - 2011 MRS Spring Meeting
Y2 - 25 April 2011 through 29 April 2011
ER -