Low-temperature operating micro solid oxide fuel cells with perovskite-type proton conductors

Hiroo Yugami, Kensuke Kubota, Yu Inagaki, Fumitada Iguchi, Shuji Tanaka, Noriko Sata, Masayoshi Esashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


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.

Original languageEnglish
Title of host publicationProtons in Solids
Number of pages6
Publication statusPublished - 2011
Event2011 MRS Spring Meeting - San Francisco, CA, United States
Duration: 2011 Apr 252011 Apr 29

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2011 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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