A Durable Ruddlesden-Popper Cathode for Protonic Ceramic Fuel Cells

Daoming Huan, Lu Zhang, Xinyu Li, Yun Xie, Nai Shi, Shuangshuang Xue, Changrong Xia, Ranran Peng, Yalin Lu

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Protonic ceramic fuel cells (PCFCs) have been proved as an efficient energy converter at intermediate temperatures. To accelerate the kinetics of the proton-involved oxygen reduction reaction (p-ORR), developing efficient and durable cathodes is of great importance for improving PCFCs. In this work, a new triple-layered Ruddlesden-Popper (R−P) structure oxide, Sr3EuFe2.5Co0.5O10−δ (3-SEFC0.5), was developed as a potential single-phase cathode for PCFCs, showing high oxygen non-stoichiometry and desirable structural thermal stability. By employing this highly active and stable single-phase cathode, the PCFC demonstrated unprecedented low polarization resistances and exceptionally great peak power densities, which were approximately 0.030 Ω cm2 and 900 mW cm−2 measured at 700 °C, respectively. These findings not only manifest the effectiveness of optimal doping in improving the structural stability and electrocatalytic activity in the multi-layered perovskite family, but also highlight the great potential of using multi-layered R−P series oxides as highly active and durable catalysts for PCFCs.

Original languageEnglish
Pages (from-to)4994-5003
Number of pages10
JournalChemSusChem
Volume13
Issue number18
DOIs
Publication statusPublished - Sep 18 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

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