A triple (e/O2−/H+) conducting perovskite BaCo0.4Fe0.4Zr0.1Y0.1O3-δ for low temperature solid oxide fuel cell

Jhe Wei Jhuang, Kan Rong Lee, Sheng Wei Lee, Baoyuan Wang, Chen Xia, I. Ming Hung, Chung Jen Tseng

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Low-temperature solid oxide fuel cells (LT-SOFCs) have recently gained enormous attention worldwide with a new research trend focusing on single layer fuel cells (SLFC), which have better cell performance than traditional SOFCs at low operating temperatures. In this study, a triple (e/O2−/H+) conducting perovskite BaCo0.4Fe0.4Zr0.1Y0.1O3-δ (BCFZY) is used as the intermediate layer material for SLFC. A high current density of 994 mA/cm2 at 0.6 V and a peak power density of 610 mW/cm2 with an OCV of 1.01 V has been achieved with a cell operating temperature of 550 °C, confirming the application feasibility of BCFZY in SLFCs. Furthermore, a typical proton conductor BaZr0.8Y0.2O3-δ (BZY) is introduced into BCFZY to enhance the cell performance. By adjusting the mass ratio of the BCFZY-BZY layer, an optimal power density is obtained, achieving 703 mW/cm2 with an OCV of 1.03 V at 550 °C with an 8BCFZY:2BZY (wt%) ratio. These findings prove that the proposed BCFZY-BZY holds great promise for developing SLFCs to realize low-temperature operation.

Original languageEnglish
Pages (from-to)9767-9774
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume46
Issue number15
DOIs
StatePublished - 26 Feb 2021

Keywords

  • BCFZY-BZY composite
  • Perovskite
  • Proton conductor
  • Single layer fuel cell (SLFC)
  • Triple conduction

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