Evaluation of the electrocatalytic performance of a novel nanocomposite cathode material for ceramic fuel cells

Idris Temitope Bello, Yufei Song, Na Yu, Zheng Li, Siyuan Zhao, Adeleke Maradesa, Tong Liu, Zongping Shao, Meng Ni

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)

Abstract

Cathode materials are pivotal in advancing ceramic fuel cell (CFC) technology. However, they still suffer from insufficient oxygen reduction reaction (ORR) activity and a high thermal expansion coefficient (TEC). In this study, we develop a thermodynamically stable self-ordered nanocomposite cathode material with the unique composition, BaCo0.5Ce0.3Fe0.1Yb0.1O3-δ (BCCFYb). Upon calcination, the precursor material separates into a host cubic and ancillary rhombohedral phase. We compare the performance of the triple ionic and electronic (O2−/H+/e) conducting BCCFYb to that of cobalt-rich oxide-ion and electron (O2−/e) conducting BaCo0.833Yb0.167O3-δ (BCYb), cerium-rich proton and electronic (H+/e) conducting BaCe0.75Fe0.25O3-δ (BCF), and Co–Ce-rich triple ionic and electronic (O2−/H+/e) conducting BaCo0.833Yb0.167O3-δ - BaCe0.75Fe0.25O3-δ (BCYb-BCF) traditional composite materials. The BCCFYb demonstrates a low TEC, good operational stability, and superior cathodic performance in both oxygen ion- and proton-conducting CFC modes, making it a promising cathode material for ceramic fuel cells.

Original languageEnglish
Article number232722
JournalJournal of Power Sources
Volume560
DOIs
Publication statusPublished - 15 Mar 2023

Keywords

  • Cathode
  • Ceramic fuel cell
  • Oxygen reduction reaction
  • Protonic ceramic fuel cell
  • Self-ordering
  • Solid oxide fuel cell

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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