Improvement in thermal cycling durability of SOFCs using LaGa O 3-based electrolyte by inserting convex Sm0.5 Sr 0.5 CoO3 interlayer

Young Wan Ju, Hiroyuki Eto, Toru Inagaki, Shintaro Ida, Tatsumi Ishihara

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Improved thermal cycling durability of a solid oxide fuel cell (SOFC) using a LaGa O3-based electrolyte was studied by inserting a thin Sm 0.5 Sr0.5 CoO3-δ (SSC55) cathode interlayer with a submicron-sized convex. The thin SSC55 interlayer was prepared on a SDC20-LSGM9182 bilayer film by pulsed layer deposition. The resulting maximum power density (MPD) was 1.99 W/cm2 at 973 K, and the open circuit voltage was close to the theoretical value. In addition, the thermal cycling tolerance was significantly improved. The decrease in MPD was only 4% over three thermal cycles from 973 to 298 K. The MPD of a cell with no SSC55 interlayer decreased significantly.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume13
Issue number12
DOIs
Publication statusPublished - Oct 29 2010

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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