Skip to content

Research at St Andrews

Oxygen storage capacity and thermal stability of brownmillerite-type Ca2(Al1-xGax)MnO5+δ oxides

Research output: Contribution to journalArticle

Open Access Status

  • Embargoed (until 14/08/20)

Author(s)

Xiubing Huang, Chengsheng Ni, John T. S. Irvine

School/Research organisations

Abstract

Understanding the oxygen uptake/release mechanism in oxygen storage materials is of great importance in the design of energy-related materials and their corresponding applications. In this work, the effects of Ga doping amount on the oxygen storage capacity and thermal stability of Ca2(Al1-xGax)MnO5+δ (0 ≤ x ≤ 1) with a brownmillerite-type structure were investigated. Ca2AlMnO5+δ can reversibly store/release a large amount of excess oxygen (∼3.0 wt%) at low temperature (between 300 and 600 °C) under oxidative atmospheres. With the increasing Ga doping amount in Ca2(Al1-xGax)MnO5+δ, these materials uptake less oxygen at higher temperature which can be attributed to the difficulty in the oxidation of tetrahedral GaO4 blocks into octahedral GaO6 blocks under 1 atm O2. However, with the increasing of Ga-substitution amount, these Ca2(Al1-xGax)MnO5+δ (0 ≤ x < 1) can start to uptake oxygen at lower temperatures during the cooling process under flowing O2 due to the distorted structure. The results demonstrated that Ca2(Al1-xGax)MnO5+δ (0 ≤ x < 1) can reversibly store/release large amounts of oxygen via just controlling the surrounding temperature and/or oxygen partial pressure but without using reductive gases, which would enable them great potentials in many applications.
Close

Details

Original languageEnglish
Article number151865
JournalJournal of Alloys and Compounds
Volume810
Early online date14 Aug 2019
DOIs
Publication statusE-pub ahead of print - 14 Aug 2019

    Research areas

  • Oxygen storage materials, Brownmillerite-type structure, Doping effect, Reversible behaviour

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Lattice strain-enhanced exsolution of nanoparticles in thin films

    Han, H., Park, J., Nam, S. Y., Choi, G. M., Parkin, S. S. P., Jang, H. M. & Irvine, J. T. S., 1 Apr 2019, In : Nature Communications. 10, 8 p., 1471.

    Research output: Contribution to journalArticle

  2. Synthesis and electrochemical characterization of La0.75Sr0.25Mn0.5Cr0.5‐xAlxO3, for IT- and HT- SOFCs

    Abdalla, A. M., Kamel, M., Hossain, S., Irvine, J. T. S. & Azad, A. K., 12 Sep 2019, In : International Journal of Applied Ceramic Technology. Early View

    Research output: Contribution to journalArticle

  3. Photo-catalytic hydrogen production over Au/g-C3N4: effect of gold particle dispersion and morphology

    Caux, M., Menard, H., AlSalik, Y. M., Irvine, J. T. S. & Idriss, H., 7 Aug 2019, In : Physical Chemistry Chemical Physics. 21, 29, p. 15974-15987 14 p.

    Research output: Contribution to journalArticle

  4. In situ thermal battery discharge using CoS2 as a cathode material

    Payne, J. L., Percival, J. D., Giagloglou, K., Crouch, C., Carins, G. M., Smith, R., Gover, R. & Irvine, J. T. S., 2 Aug 2019, In : Journal of The Electrochemical Society. 166, 12, p. A2660-A2664 5 p.

    Research output: Contribution to journalArticle

  5. Using cellulose polymorphs for enhanced hydrogen production from photocatalytic reforming

    Chang, C., Skillen, N., Nagarajan, S., Ralphs, K., Irvine, J. T. S., Lawton, L. & Robertson, P. K. J., 1 Aug 2019, In : Sustainable Energy & Fuels. 3, 8, p. 1971-1975 5 p.

    Research output: Contribution to journalArticle

Related by journal

  1. SrBeB2O5: growth, crystal structure and optical properties

    Yao, W., Wang, X., Huang, H., Xu, T., Jiang, X., Wang, X., Lin, Z. & Chen, C., 25 Apr 2014, In : Journal of Alloys and Compounds. 593, p. 256–260

    Research output: Contribution to journalArticle

  2. Temperature effects on structural properties in the synthesis of nanocrystalline Zr0.5Ce0.5O2 solid solution: A study by XRD and HRTEM

    Fuentes, R. O., Woollins, J. D. & Baker, R. T., 16 Apr 2010, In : Journal of Alloys and Compounds. 495, 2, p. 565-569 5 p.

    Research output: Contribution to journalArticle

  3. NMR study of Sm2Co17Hx hydrides

    Borowiec, M., Kapusta, C., Jasiurkowska, M., Lemanski, A., Zukrowski, J. & Riedi, P. C., 13 Sep 2007, In : Journal of Alloys and Compounds. 442, p. 362-364 3 p.

    Research output: Contribution to journalArticle

  4. Synthesis of novel LaOAgS-type cation-deficient bismuth oxyhalides

    Charkin, D. O., Moskvin, D. N., Berdonosov, P. S., Dolgikh, V. A. & Lightfoot, P., 9 Mar 2006, In : Journal of Alloys and Compounds. 413, p. 40-45 6 p.

    Research output: Contribution to journalArticle

ID: 260598444