Imperial College London
Portrait Picture

Professor Stephen Skinner

Faculty of Engineering, Department of Materials

CeresPower/RAEng Research Chair in Electrochemical Devices
 
 
 
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Contact

 

+44 (0)20 7594 6782s.skinner

 
 
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Location

 

206GoldsmithSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Skinner:2016:10.1016/j.solidstatesciences.2016.02.012,
author = {Skinner, SJ and Tonus, F},
doi = {10.1016/j.solidstatesciences.2016.02.012},
journal = {Solid State Sciences},
pages = {88--92},
title = {In-situ neutron diffraction study of cathode/electrolyte interactions under electrical load and elevated temperature},
url = {http://dx.doi.org/10.1016/j.solidstatesciences.2016.02.012},
volume = {55},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Fuel cells are proposed as a future energy conversion technology that will reduce greenhouse gas emissions at the point of operation due to their ability to produce electrical energy from non-hydrocarbon fuel sources. The Solid Oxide Fuel Cell (SOFC) is amongst the most efficient fuel cell types, however, due to the high cell operating temperature cation diffusion occurs between the different components of the cell, resulting in rapid degradation of the power output. In this paper we investigate cation migration between the promising intermediate temperature-SOFC cathode La1-xSrxCo1-yFeyO3- (LSCF) and a fluorite type electrolyte Ce1-xPrxO2- (CPO). The crystallographic structure evolution and degradation of the materials were studied by neutron diffraction in-situ under pseudo-operating conditions, i.e. at 600 ºC under air and under electrical polarisation. The lattice parameter and cation occupancy evolution were analysed by Rietveld refinement as a function of time and applied potential. The materials were found to be stable, as no impurity formation, lattice parameter or site occupancy evolution was observed during the experiment. However La migration prior to the experiment from LSCF to CPO was observed as well as B-site vacancies in LSCF.
AU  - Skinner,SJ
AU  - Tonus,F
DO  - 10.1016/j.solidstatesciences.2016.02.012
EP  - 92
PY  - 2016///
SN  - 1293-2558
SP  - 88
TI  - In-situ neutron diffraction study of cathode/electrolyte interactions under electrical load and elevated temperature
T2  - Solid State Sciences
UR  - http://dx.doi.org/10.1016/j.solidstatesciences.2016.02.012
UR  - http://hdl.handle.net/10044/1/29740
VL  - 55
ER  -
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