Next Article in Journal
Solvent-Induced Polymorphism of Iron(II) Spin Crossover Complexes
Next Article in Special Issue
The Sulphur Poisoning Behaviour of Gadolinia Doped Ceria Model Systems in Reducing Atmospheres
Previous Article in Journal
Superplasticizer Addition to Carbon Fly Ash Geopolymers Activated at Room Temperature
Previous Article in Special Issue
Nb5+-Doped SrCoO3−δ Perovskites as Potential Cathodes for Solid-Oxide Fuel Cells
Open AccessArticle

Novel Mg-Doped SrMoO3 Perovskites Designed as Anode Materials for Solid Oxide Fuel Cells

Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
Institut Laue Langevin, BP 156X, Grenoble 38042, France
Author to whom correspondence should be addressed.
Academic Editor: Norbert H. Menzler
Materials 2016, 9(7), 588;
Received: 7 June 2016 / Revised: 7 July 2016 / Accepted: 14 July 2016 / Published: 19 July 2016
(This article belongs to the Special Issue Recent Advances in Materials for Solid Oxide Cells)
SrMo1−xMxO3−δ (M = Fe and Cr, x = 0.1 and 0.2) oxides have been recently described as excellent anode materials for solid oxide fuel cells at intermediate temperatures (IT-SOFC) with LSGM as the electrolyte. In this work, we have improved their properties by doping with aliovalent Mg ions at the B-site of the parent SrMoO3 perovskite. SrMo1−xMgxO3−δ (x = 0.1, 0.2) oxides have been prepared, characterized and tested as anode materials in single solid-oxide fuel cells, yielding output powers near 900 mW/cm−2 at 850 °C using pure H2 as fuel. We have studied its crystal structure with an “in situ” neutron power diffraction (NPD) experiment at temperatures as high as 800 °C, emulating the working conditions of an SOFC. Adequately high oxygen deficiencies, observed by NPD, together with elevated disk-shaped anisotropic displacement factors suggest a high ionic conductivity at the working temperatures. Furthermore, thermal expansion measurements, chemical compatibility with the LSGM electrolyte, electronic conductivity and reversibility upon cycling in oxidizing-reducing atmospheres have been carried out to find out the correlation between the excellent performance as an anode and the structural features. View Full-Text
Keywords: anode; IT-SOFC; SrMoO3; perovskite; neutron diffraction anode; IT-SOFC; SrMoO3; perovskite; neutron diffraction
Show Figures

Figure 1

MDPI and ACS Style

Cascos, V.; Alonso, J.A.; Fernández-Díaz, M.T. Novel Mg-Doped SrMoO3 Perovskites Designed as Anode Materials for Solid Oxide Fuel Cells. Materials 2016, 9, 588.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop