Self-assembled dynamic perovskite composite cathodes for intermediate temperature solid oxide fuel cells

Shin, Felix, Rosseinsky, Matthew, Claridge, John, Xu, Wen, Zanella, Marco, Savvin, Stanislav and Dawson, Karl (2016) Self-assembled dynamic perovskite composite cathodes for intermediate temperature solid oxide fuel cells. [Data Collection]

There is a more recent version of this item available.

Data Catalogue DOI: 10.17638/datacat.liverpool.ac.uk/231

Description

Electrode materials for intermediate temperature (500 – 700 °C) solid oxide fuel cells require electrical and mechanical stability to maintain performance during the cell lifetime. This has proven difficult to achieve for many candidate cathode materials and their derivatives with good transport and electrocatalytic properties because of reactivity towards cell components, and the fuels and oxidants. Here we present Ba0.5Sr0.5(Co0.7Fe0.3)0.6875W0.3125O3-δ (BSCFW), a self-assembled composite prepared through simple solid state synthesis, consisting of B-site cation ordered double perovskite and disordered single perovskite oxide phases. These phases interact by dynamic compositional change at the operating temperature, promoting both chemical stability through the increased amount of W in the catalytically active single perovskite provided from the W-reservoir double perovskite, and microstructural stability through reduced sintering of the supported catalytically active phase. This interactive catalyst-support system enabled stable high electrochemical activity through the synergic integration of the distinct properties of the two phases.

Keywords:

SOFC, cathode, composite, perovskite, mixed ionic and electronic conductor, MIEC

Divisions:

Faculty of Science and Engineering > School of Physical Sciences

Depositing User:

Felix Shin

Date Deposited:

12 Dec 2016 11:51

Last Modified:

12 Dec 2016 13:55

DOI:

10.17638/datacat.liverpool.ac.uk/231

URI:

https://datacat.liverpool.ac.uk/id/eprint/231

Additional details

Creators:	Shin, Felix Rosseinsky, Matthew Claridge, John Xu, Wen Zanella, Marco Savvin, Stanislav Dawson, Karl
Research funder:	Grant Number Name of the Funder The Funder's ID EP/H000925/1 ENGINEERING & PHYSICAL SCIENCES 172 EP/N004884/1 ENGINEERING & PHYSICAL SCIENCES 172
Date:	6 December 2016
Statement on legal, ethical and access issues :	No access restriction
Resource language:	English
Project Details:	Project ID The title of the Project Project Funding ID Project Start Date Project End Date 115499 Integration of Computation and Experiment for Accelerated Materials Discovery 115501 1 September 2015 31 August 2020 70744 Chemical Synthesis of Transformative Extended Materials 109009 1 October 2009 31 March 2015
Publisher:	University of Liverpool
Contact email address:	m.j.rosseinsky@liverpool.ac.uk
Last Modified:	12 Dec 2016 13:55