Cathodic materials for intermediate-temperature solid oxide fuel cells based on praseodymium nickelates-cobaltites

Research output: Contribution to journalArticlepeer-review

Authors

  • V. A. Sadykov
  • N. F. Eremeev
  • E. M. Sadovskaya
  • A. S. Bobin
  • Yu E. Fedorova
  • V. S. Muzykantov
  • N. V. Mezentseva
  • G. M. Alikina
  • T. A. Kriger
  • V. D. Belyaev
  • V. A. Rogov
  • A. S. Ulikhin
  • Yu S. Okhlupin
  • N. F. Uvarov
  • O. F. Bobrenok
  • James Watton
  • J. Mertens
  • I. C. Vinke

Colleges, School and Institutes

External organisations

  • Russian Academy of Science (LPI RAS)
  • Novosibirsk State University
  • Institute for Energy and Climate Research, Forschungszentrum Jülich GmbH

Abstract

A unique combination of methods (TPD of O2, thermogravimetry, isotopic heteroexchange of oxygen in different modes) was used to carry out detailed studies of oxygen mobility and reactivity in mixed praseodymium nickelates-cobaltites (PrNi1 - x Co x O 3 + δ) and their composites with doped cerium dioxide (Ce 0.9Y0.1O2 - δ) as promising cathodic materials stable towards the effect of CO2 in the intermediate-temperature region. It is shown that in the case of composites of PrNi1 - x Co x O3+δ-Ce 0.9Y0.1O2 - δ synthesized using the Pechini method and ultrasonic treatment, stabilization of the disordered cubic perovskite phase due to redistribution of cations between the phases provides high oxygen mobility. Preliminary results on tests of cathodic materials of this type supported on planar NiO/YSZ anodes (H.C. Starck) with a thin layer of YSZ electrolyte and a buffer Ce0.9Y0.1O2 - δ layer showed that power density of up to 0.4 W/cm2 was reached in the region of medium (600-700°C) temperatures, which was close to typical values for fuel cells of this type with cathodes based on strontium-doped perovskites and their composites with electrolytes.

Details

Original languageEnglish
Pages (from-to)669-679
Number of pages11
JournalRussian Journal of Electrochemistry
Volume50
Issue number7
Publication statusPublished - 1 Jul 2014

Keywords

  • cathodic materials for solid oxide fuel cells, composites, diffusion coefficient, isotopic exchange of oxygen, praseodymium nickelates-cobaltites, rate of heteroexchange, structure, voltammetric characteristics

ASJC Scopus subject areas