Jump to main content
Jump to site search

Issue 17, 2016
Previous Article Next Article

Influence of Ca-doping in layered perovskite PrBaCo2O5+δ on the phase transition and cathodic performance of a solid oxide fuel cell

Author affiliations

Abstract

Layered perovskite oxides with the formula LnBaCo2O5+δ (Ln = Pr, Nd, Sm and Gd) have received attention as promising cathode materials for solid oxide fuel cells (SOFCs) because of their high oxygen diffusion and surface exchange coefficients. Recently, many researchers have reported that substituting barium with strontium or calcium can increase the structural stability, electrical conductivity, and catalytic activity of LnBaCo2O5+δ. In this study, we investigated the effect of Ca doping on the structural, electrical, and electrochemical properties of PrBa1−xCaxCo2O5+δ (x = 0, 0.1, 0.2, 0.3 and 0.4). Increasing the amount of Ca dopant changed the structure of PrBa1−xCaxCo2O5+δ from a layered perovskite to a simple perovskite. At x = 0.3, co-existence of the simple and the layered perovskite structure is observed. Electrical conductivity and electro-chemical performance were improved with increasing amount of Ca in the layered perovskite structure and declined with increasing amount of the simple perovskite phase.

Graphical abstract: Influence of Ca-doping in layered perovskite PrBaCo2O5+δ on the phase transition and cathodic performance of a solid oxide fuel cell

Back to tab navigation

Supplementary files

Publication details

The article was received on 26 Jan 2016, accepted on 27 Mar 2016 and first published on 13 Apr 2016


Article type: Paper
DOI: 10.1039/C6TA00746E
Citation: J. Mater. Chem. A, 2016,4, 6479-6486
  •   Request permissions

    Influence of Ca-doping in layered perovskite PrBaCo2O5+δ on the phase transition and cathodic performance of a solid oxide fuel cell

    C. Lim, A. Jun, H. Jo, K. M. Ok, J. Shin, Y. Ju and G. Kim, J. Mater. Chem. A, 2016, 4, 6479
    DOI: 10.1039/C6TA00746E

Search articles by author

Spotlight

Advertisements