Novel Ba 0.5Sr 0.5(Co 0.8Fe 0.2) 1 - XTi xO 3 - δ (x = 0, 0.05, and 0.1) cathode materials for proton-conducting solid oxide fuel cells

Lei Bi, Emiliana Fabbri, Enrico Traversa*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Ba 0.5Sr 0.5(Co 0.8Fe 0.2) 1 - xTi xO 3 - δ (x = 0, 0.05, and 0.1) materials were successfully prepared via an improved solid-state reaction route in an attempt to get better chemical stability for Ba 0.5Sr 0.5Co 0.8Fe 0.2O 3 - δ (BSCF). Stability tests showed that the novel Ti-doping strategy can effectively increase the chemical stability for Ba 0.5Sr 0.5Co 0.8Fe 0.2O 3 - δ in CO 2- containing environments. The larger the Ti doping amount, the better the chemical stability. Ti-doped samples showed only a slight increase in area specific resistance (ASR) values, as shown from electrochemical tests performed on symmetrical cells. Therefore, anode-supported single fuel cells using BaZr 0.4Ce 0.4Y 0.2O 3 - δ (BZCY) as the electrolyte and BZCY-Ba 0.5Sr 0.5(Co 0.8Fe 0.2) 0.9Ti 0.1O 3 - δ as the composite cathode, were fabricated and tested. The measured maximum power density values were 181, 116, and 49 mW cm - 2 at 700, 600, and 500 °C, respectively.

Original languageEnglish (US)
Pages (from-to)1-5
Number of pages5
JournalSolid State Ionics
Volume214
DOIs
StatePublished - Apr 25 2012

Keywords

  • Ba Sr Co Fe O
  • Cathode
  • Chemical stability
  • Proton conductor
  • Solid oxide fuel cell
  • Ti-doping

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Chemistry(all)

Fingerprint Dive into the research topics of 'Novel Ba 0.5Sr 0.5(Co 0.8Fe 0.2) 1 - XTi xO 3 - δ (x = 0, 0.05, and 0.1) cathode materials for proton-conducting solid oxide fuel cells'. Together they form a unique fingerprint.

Cite this