Structure-conductivity relationship of PrBaMnMoO6-δ through in-situ measurements: A neutron diffraction study
Artikel i vetenskaplig tidskrift, 2020

The structural and electrochemical properties of the double perovskite-type oxide, PrBaMnMoO6-δ, was investigated using neutron diffraction with in-situ conductivity measurement under a dry Argon atmosphere from 25 °C to 700 °C. A Rietveld refinement of the neutron diffraction data confirmed monoclinic symmetry in the P21/n space group. Rietveld refinement also confirms the unit cell parameters of a = 5.6567 (1) Å, b = 5.6065 (2) Å, c = 7.9344 (1) Å and β = 84.43° with reliable atomic positions and refinement factors (R-factors). Neutron diffraction data refinement shows two minor phases (<5%), an orthorhombic AB2O5 type phase of PrMn2O5 in the Pbam (No. 32) space group with unit cell parameters, a = 7.9672 (1) Å, b = 8.9043 (2) Å and c = 5.8540 (1) Å and a scheelite phase of BaMoO4 in the tetragonal I41/a (88) space group with the unit cell parameters, a = b = 5.9522 (1) Å, and c = 12.3211 (2) Å. Morphological images revealed a porous and intertwined microstructure. In-situ conductivity measurement shows that the total conductivity of this material was 130.84 Scm−1 at 700 °C.

Neutron diffraction

Double perovskite

PrBaMnMoO 6-δ

SOFC electrode

In-situ conductivity

Författare

Shammya Afroze

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 2

Universiti Brunei Darussalam

Nico Torino

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 2

Md Sumon Reza

Universiti Brunei Darussalam

N. Radenahmad

Universiti Brunei Darussalam

Q. Cheok

Universiti Brunei Darussalam

Paul Henry

Uppsala universitet

Rutherford Appleton Laboratory

A. K. Azad

Universiti Brunei Darussalam

Ceramics International

0272-8842 (ISSN)

Vol. In Press

Ämneskategorier

Oorganisk kemi

Keramteknik

Materialkemi

DOI

10.1016/j.ceramint.2020.08.161

Mer information

Senast uppdaterat

2020-10-12