BaCeO3-BaZrO3 solid solution (BCZY) as a high performance electrolyte of protonic ceramic fuel cells (PCFCs)

Hyegsoon An, Dongwook Shin, Sung Min Choi, Jong Ho Lee, Ji Won Son, Byung Kook Kim, Hae June Je, Hae Weon Lee, Kyung Joong Yoon

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

To overcome the limitations of the solid oxide fuel cells (SOFCs) due to the high temperature operation, there has been increasing interest in proton conducting fuel cells (PCFCs) for reduction of the operating temperature to the intermediate temperature range. In present work, the perovskite BaCe0.85-xZrxY0.15O3-λ (BCZY, x = 0.1, 0.3, 0.5, and 0.7) were synthesized via solid state reaction (SSR) and adopted as an electrolyte materials for PCFCs. Powder characteristics were examined using X-ray diffraction (XRD), thermogravimetric analysis (TGA) and Brunauer, Emmett and Teller (BET) surface area analysis. Single phase BCZY were obtained in all compositions, and chemical stability was improved with increasing Zr content. Anode-supported cell with Ni-BaCe0.55Z0.3Y0.15 O3-λ (BCZY3) anode, BCZY3 electrolyte and BCZY3-Ba0.5Sr0.5Co0.8Fe0.2O3-λ (BSCF) composite cathode was fabricated and electrochemically characterized. Open-circuit voltage (OCV) was 1.05 V, and peak power density of 370 (mW/cm2) was achieved at 650°C.

Original languageEnglish
Pages (from-to)271-277
Number of pages7
JournalJournal of the Korean Ceramic Society
Volume51
Issue number4
DOIs
StatePublished - 2014 Jul 31

Keywords

  • BZCY
  • Electrolyte
  • Fuel cell
  • Proton conductor
  • Stability

Fingerprint Dive into the research topics of 'BaCeO<sub>3</sub>-BaZrO<sub>3</sub> solid solution (BCZY) as a high performance electrolyte of protonic ceramic fuel cells (PCFCs)'. Together they form a unique fingerprint.

  • Cite this