X-ray attenuation properties of commonly employed solid oxide fuel cell materials

X-Ray Microscopy Conference 2016

Heenan, T.M.M.^1 ; Brett, D.J.L.^1 ; Shearing, P.R.^1

Electrochemical Innovation Lab, Department of Chemical Engineering, UCL, London

WC1E 7JE, United Kingdom^1

关键词: Attenuation properties;    Constituent materials;    Electrochemical performance;    Gas-phase reactants;    Nano-CT;    Quantitative comparison;    Triple phase boundary;    X-ray attenuation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/849/1/012017/pdf
DOI  :  10.1088/1742-6596/849/1/012017

来源: IOP

【 摘 要 】

X-ray nano CT has been vastly applied to study the microstructure of solid oxide fuel cell (SOFC) electrodes. One widely accepted indicator of electrochemical performance is the triple phase boundary (TPB): a location where the three materials responsible for ionic, electronic and gas-phase reactant transport are in contact. X-ray absorption tomography has been used extensively in the characterisation of these TPBs, utilising the different attenuation properties of the constituent materials. Here we present a quantitative comparison of the attenuation properties for elements commonly employed in solid oxide fuel cell materials.