Jump to main content
Jump to site search

Issue 16, 2019
Previous Article Next Article

Electrochemical mechanisms of an advanced low-temperature fuel cell with a SrTiO3 electrolyte

Author affiliations

Abstract

The electrochemical mechanisms and performance of a symmetrical low-temperature SOFC with a single oxide as the electrolyte are investigated here. The fuel cell has a layered Ni foam–Ni0.8Co0.15Al0.05LiO2 (NCAL)/SrTiO3(STO)/NCAL–Ni foam structure. A 0.8 mm thick layer of STO is used as the electrolyte and NCAL-coated nickel foam is used as the electrode on both sides of the cell. The maximum power densities of the cell were 0.31, 0.44, and 0.62 W cm−2 in a H2/air atmosphere at 450, 500, and 550 °C, respectively. The corresponding ionic conductivities of the STO electrolyte were 0.16, 0.21, and 0.24 S cm−1. Ion filtration experiments with densified Gd-doped CeO2/STO and SrCe0.95Y0.05O3−δ/STO double layer electrolytes indicated that both oxygen ions and protons act as charge carriers in the STO electrolyte. XPS, TGA, and HRTEM analyses indicate that lithium carbonate, which originates from the NCAL, coats the STO electrolyte and forms a core–shell structure in the fuel cell test atmosphere. Lithium carbonate between the surface and interface of the STO particles may provide a pathway for oxygen ion and proton conduction.

Graphical abstract: Electrochemical mechanisms of an advanced low-temperature fuel cell with a SrTiO3 electrolyte

Back to tab navigation

Publication details

The article was received on 15 Jan 2019, accepted on 24 Mar 2019 and first published on 25 Mar 2019


Article type: Paper
DOI: 10.1039/C9TA00499H
J. Mater. Chem. A, 2019,7, 9638-9645
  • Open access: Creative Commons BY license
  •   Request permissions

    Electrochemical mechanisms of an advanced low-temperature fuel cell with a SrTiO3 electrolyte

    G. Chen, H. Liu, Y. He, L. Zhang, M. I. Asghar, S. Geng and P. D. Lund, J. Mater. Chem. A, 2019, 7, 9638
    DOI: 10.1039/C9TA00499H

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements