Issue 13, 2018

First transparent oxide ion conducting ceramics synthesized by full crystallization from glass

Abstract

We propose here to use full crystallization from glass as an innovative process to elaborate completely dense transparent oxide conductors. This is demonstrated in the case of new non-stoichiometric Ln1+xSr1−xGa3O7+δ (Ln = Eu, Gd or Tb) melilite ceramics which show bulk conductivity greater than 0.02 S cm−1 at 500 °C. Full crystallization from glass is used here as an alternative method to conventional solid state synthesis in order to elaborate new crystalline phases, i.e. melilite compositions with small rare earth elements, which could not be synthesized by a solid state reaction. The materials are stable up to 800 °C under cycled conductivity measurement conditions. Moreover, as melilite compositions show similar glass and crystalline phase densities, the process can produce fully dense ceramics with thin grain boundaries. Coupled to the limited birefringence of the melilite structure, such materials retain some of the glass transparency during crystallization, leading to the first transparent oxide ion conducting ceramics. This work may open a way to a new class of fully dense, and possibly transparent, solid state electrolytes.

Graphical abstract: First transparent oxide ion conducting ceramics synthesized by full crystallization from glass

Supplementary files

Article information

Article type
Paper
Submitted
29 اگست 2017
Accepted
10 دسمبر 2017
First published
11 دسمبر 2017

J. Mater. Chem. A, 2018,6, 5276-5289

First transparent oxide ion conducting ceramics synthesized by full crystallization from glass

M. Boyer, X. Yang, A. J. Fernández Carrión, Q. Wang, E. Véron, C. Genevois, L. Hennet, G. Matzen, E. Suard, D. Thiaudière, C. Castro, D. Pelloquin, L. B. Kong, X. Kuang and M. Allix, J. Mater. Chem. A, 2018, 6, 5276 DOI: 10.1039/C7TA07621E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements