A Highly Active Perovskite Cathode for Low-Temperature Solid Oxide Fuel Cells: BaCo0.7Fe0.22Sc0.08O3–δ

Wei He, Fei Fei Dong, Xue Lian Wu, Meng Ni

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

Abstract

Low-temperature solid oxide fuel cells (LT-SOFCs) have attracted much attention for their long-term stability, short start-up time, and economic competitiveness. Development of a high electrochemical active cathode for the oxygen reduction reaction (ORR) is the key to LT-SOFCs. In this study, a cubic perovskite BaCo0.7Fe0.22Sc0.08O3–δ (BCFSc) is synthesized and investigated. It exhibits extremely low polarization resistances (e.g., 0.03 Ω cm2 at 600 °C) in symmetric cell using Ce0.8Sm0.2O1.9 (SDC) as the electrolyte, indicating an excellent ORR catalytic activity. A maximum output power density of 1446 mW cm−2 is achieved at 600 °C for a single cell with an anode functional layer, which is much larger than the one without it (1045 mW cm−2). The favorable performance enables BCFSc to be a candidate cathode for LT-SOFCs.

Original languageEnglish
Article number1700005
JournalAdvanced Sustainable Systems
Volume1
Issue number5
DOIs
Publication statusPublished - 1 May 2017

Keywords

  • catalytic activity
  • cathodes
  • cubic perovskites
  • solid state fuel cells

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Environmental Science(all)

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