Correlating surface cation composition and thin film microstructure with the electrochemical performance of lanthanum strontium cobaltite (LSC) electrodes
作者： G. Friedbacher , J. Fleig , G. M. Rupp , A. Limbeck , M. Kubicek
DOI: 10.1039/C3TA15327D
关键词: Materials science 、 Inductively coupled plasma 、 Etching (microfabrication) 、 Microstructure 、 Thin film 、 Dielectric spectroscopy 、 Analytical chemistry 、 Electrode 、 Porosity 、 Pulsed laser deposition
摘要: La0.6Sr0.4CoO3−δ thin films of varying thicknesses (20–170 nm) were prepared by pulsed laser deposition on yttria-stabilized zirconia (100) substrates, and their electrochemical electrode performance was correlated with the chemical surface composition microstructure (e.g. porosity, area). The cation analyzed an atomic etching procedure on-line inductively coupled plasma optical emission spectrometry detection. sensitivity method increased dynamically switching reagent during analysis quantitative results for even top layer obtained. A water-soluble Sr-rich species could be quantified LSC in combination impedance spectroscopy improved understanding exchange resistance Microstructural features such as effective porosity became accessible a these methods.
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