Skip to content

Research at St Andrews

Sr3Ca1-xZnxZr0.5Ta1.5O8.75: a study of the influence of the B-site dopant nature upon protonic conduction

Research output: Contribution to journalArticlepeer-review

Author(s)

School/Research organisations

Abstract

The new perovskite oxide Sr3Ca1+xZr(1−y)−x/2Ta(1+y)−x/2O8.5−[(5x−2y)/4] belongs to the class of complex perovskites of general formula A3(B′,B″)3O9−δ. The specific composition Sr3CaZr0.5Ta1.5O8.75 has been already reported as a promising proton conducting material in a wet hydrogen atmosphere. The extent of vacancy formation and hence degree of hydration in these systems is quite extensive for a perovskite lattice. This seems related to the presence of the polarisable Ca2+ cation on the B site. In this study, we have replaced Ca with varying amounts of Zn. The extent of hydration is found to rapidly decrease with Zn substitution, as does the extent of proton conductivity. As very little water uptake is observed for compositions with more than 25% of Ca2+ replaced by Zn2+, this effect is not simply statistical. Instead, it may be supposed that extended interactions due to the polarisable Ca2+ ions facilitate the water uptake. It is proposed that mixed oxides such as Sr3CaZr0.5Ta1.5O8.75+yH2O are effectively underdoped in terms of protonic conductivity at low temperatures in wet atmospheres.
Close

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

View graph of relations

Related by author

  1. 2021 roadmap for sodium-ion batteries

    Tapia-Ruiz, N., Armstrong, A. R., Alptekin, H., Amores, M. A., Au, H., Barker, J., Boston, R., Brant, W. R., Brittain, J. M., Chen, Y., Chhowalla, M., Choi, Y-S., Costa, S. I. R., Crespo Ribadeneyra, M., Cussen, S. A., Cussen, E. J., David, W. I. F., Desai, A. V., Dickson, S. A. M., Eweka, E. I. & 41 others, Forero-Saboya, J. D., Grey, C. P., Griffin, J. M., Gross, P., Hua, X., Irvine, J. T. S., Johansson, P., Jones, M. O., Karlsmo, M., Kendrick, E., Kim, E., Kolosov, O. V., Li, Z., Mertens, S. F. L., Mogensen, R., Monconduit, L., Morris, R. E., Naylor, A. J., Nikman, S., O’keefe, C. A., Ould, D. M. C., Palgrave, R. G., Poizot, P., Ponrouch, A., Renault, S., Reynolds, E. M., Rudola, A., Sayers, R., Scanlon, D. O., Sen, S., Seymour, V. R., Silván, B., Sougrati, M. T., Stievano, L., Stone, G. S., Thomas, C. I., Titirici, M-M., Tong, J., Wood, T. J., Wright, D. S. & Younesi, R., 26 Jul 2021, In: Journal of Physics: Energy. 3, 3, 89 p., 031503.

    Research output: Contribution to journalArticlepeer-review

  2. Roadmap on inorganic perovskites for energy applications

    Irvine, J., Rupp, J., Liu, G., Xu, X., Haile, S. M., Qian, X., Snyder, A., Freer, R., Ekren, D., Skinner, S., Celikbilek, O., Chen, S., Tao, S., Shin, T. H., O'Hayre, R., Huang, J., Duan, C., Papac, M., Li, S., Russel, A. & 8 others, Celorrio, V., Hayden, B., Nolan, H., Huang, X., Wang, G., Metcalfe, I., Neagu, D. & Martin, S. G., 22 Jul 2021, In: Journal of Physics: Energy. 3, 3, 51 p., 031502.

    Research output: Contribution to journalReview articlepeer-review

  3. Carrier extraction from metallic perovskite oxide nanoparticles

    McDonald, C., Ni, C., Švrček, V., Macias-Montero, M., Velusamy, T., Connor, P. A., Maguire, P., Irvine, J. T. S. & Mariotti, D., 9 Jul 2021, (E-pub ahead of print) In: Nanoscale. Advance Article, 8 p.

    Research output: Contribution to journalArticlepeer-review

  4. Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca3Al2O6 composite catalysts for biodiesel production

    Bonaccorso, A. D., Papargyriou, D., Fuente Cuesta, A., Magdysyuk, O. V., Michalik, S., Connolley, T., Payne, J. L. & Irvine, J. T. S., 28 Jun 2021, In: Journal of Physics: Energy. 3, 3, 12 p., 034014.

    Research output: Contribution to journalArticlepeer-review

  5. Platinum incorporation into titanate perovskites to deliver emergent active and stable platinum nanoparticles

    Kothari, M., Jeon, Y., Miller, D. N., Pascui, A. E., Wails, D., Ramos, S., Chadwick, A. & Irvine, J. T. S., 24 May 2021, (E-pub ahead of print) In: Nature Chemistry.

    Research output: Contribution to journalArticlepeer-review

Related by journal

  1. Non-stoichiometry, structure and properties of proton-conducting perovskite oxides

    Li, S. & Irvine, J. T. S., Mar 2021, In: Solid State Ionics. 361, 115571.

    Research output: Contribution to journalReview articlepeer-review

  2. Evaluating sulfur-tolerance of metal/Ce0.80Gd0.20O1.90 co-impregnated La0.20Sr0.25Ca0.45TiO3 anodes for solid oxide fuel cells

    Price, R., Grolig, J. G., Mai, A. & Irvine, J. T. S., Apr 2020, In: Solid State Ionics. 347, 115254.

    Research output: Contribution to journalArticlepeer-review

  3. Oxygen ion conductivity in ceria-based electrolytes co-doped with samarium and gadolinium

    Coles-Aldridge, A. V. & Baker, R. T., Apr 2020, In: Solid State Ionics. 347, 115255.

    Research output: Contribution to journalArticlepeer-review

  4. Interface formation and Mn segregation of directly assembled La0.8Sr0.2MnO3 cathode on Y2O3-ZrO2 and Gd2O3-CeO2 electrolytes of solid oxide fuel cells

    He, S., Chen, K., Saunders, M., Quadir, Z., Tao, S., Irvine, J. T. S., Cui, C. Q. & Jiang, S. P., 1 Nov 2018, In: Solid State Ionics. 325, p. 176-188 13 p.

    Research output: Contribution to journalArticlepeer-review

  5. Ionic conductivity in multiply substituted ceria-based electrolytes

    Coles-Aldridge, A. V. & Baker, R. T., Mar 2018, In: Solid State Ionics. 316, p. 9-19 11 p.

    Research output: Contribution to journalArticlepeer-review

ID: 233085

Top