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Enhanced performance of the GdBaCo2O5+δ cathode with active Ce0.8Sm0.2O1.9 nanoparticles

  • Harbin Institute of Technology
  • Harbin Institute of Technology
  • CAS - International Center for Material Physics

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Cathodic polarization resistance (Rp) critically limits the performance of intermediate temperature solid oxide fuel cell (IT-SOFC). In this paper, high performance GdBaCo2O5+δ - Ce 0.8Sm0.2O1.9 (GBCO-SDC) nano-composite cathodes were fabricated via an ion-infiltration method and their chemical compatibility, microstructures and electrochemical properties were evaluated. Good chemical compatibility was found between GBCO and SDC components. Active SDC nano-particles (∼40nm) formed continuous ionic-conducting phase on the surface of GBCO backbone, which significantly enhanced the electrocatalytic activity for oxygen reduction reaction. The composite cathode with 3.3mg·cm-2 SDC loading showed encouragingly low polarization resistance values of 0.55Ω·cm2 and 0. 096Ω·cm2 at 500°C and 600°C, respectively, which implies their promising application for cathodes of IT-SOFC.

Original languageEnglish
Title of host publicationIonic and Mixed Conducting Ceramics 7
PublisherElectrochemical Society Inc.
Pages227-233
Number of pages7
Edition11
ISBN (Electronic)9781566778374
ISBN (Print)9781607681878
DOIs
StatePublished - 2010

Publication series

NameECS Transactions
Number11
Volume28
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

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