Copper Doped Lanthanum Strontium Ferrite as Cathode for La&lt;sub&gt;0.8&lt;/sub&gt;Sr&lt;sub&gt;0.2&lt;/sub&gt;Ga&lt;sub&gt;0.8&lt;/sub&gt;Mg&lt;sub&gt;0.2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;

Francesca Zurlo; Elisabetta Di Bartolomeo; Alessandra D’Epifanio; V. Di Felice; Isabella Natali Sora; Silvia Licoccia

doi:10.4028/www.scientific.net/ast.93.13

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Copper Doped Lanthanum Strontium Ferrite as Cathode for La0.8Sr0.2Ga0.8Mg0.2O3

Francesca Zurlo Elisabetta Di Bartolomeo Alessandra D’Epifanio V. Di Felice Isabella Natali Sora Silvia Licoccia

Year: 2014 Journal: Advances in science and technology Vol: 93 Pages: 13-18 Publisher: Trans Tech Publications

DOI: 10.4028/www.scientific.net/ast.93.13

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Abstract

A “cobalt free” cathode material with stoichiometric composition La 0.8 Sr 0.2 Fe 0.8 Cu 0.2 O 3 (LSFCu) was specifically developed for La 0.8 Sr 0.2 Ga 0.8 Mg 0.2 O 3 (LSGM) electrolyte. The chemical stability with LSGM electrolyte was investigated by structural and morphological analysis. The electrochemical properties of LSFCu dense pellets were investigated in the temperature range 600–750°C by electrochemical impedance spectroscopy (EIS). LSFCu/LSGM/LSFCu symmetrical cells were prepared and Area Specific Resistance (ASR) values, directly depending on the rate limiting step of the oxygen reduction reaction, were evaluated. Fuel cells were prepared using LSFCu as cathode material on LSGM pellet and electrochemical tests were performed and compared to similar fuel cells prepared by using commercial La 0.6 Sr 0.4 Fe 0.8 Co 0.2 O 3 (LSFCo). The maximum current density and power density recorded for LSFCu and LSFCo were comparable demonstrating that Cu can be used as substitutes Co.

Keywords:

Materials science Cathode Electrochemistry Strontium Analytical Chemistry (journal) Electrolyte Dielectric spectroscopy Cobalt Lanthanum Doping Ferrite (magnet) Stoichiometry Nuclear chemistry Inorganic chemistry Metallurgy Electrode Chemistry Physical chemistry

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Advancements in Solid Oxide Fuel Cells

Physical Sciences → Materials Science → Materials Chemistry

Magnetic and transport properties of perovskites and related materials

Physical Sciences → Materials Science → Electronic, Optical and Magnetic Materials

Electronic and Structural Properties of Oxides

Physical Sciences → Materials Science → Materials Chemistry

Copper Doped Lanthanum Strontium Ferrite as Cathode for La<sub>0.8</sub>Sr<sub>0.2</sub>Ga<sub>0.8</sub>Mg<sub>0.2</sub>O<sub>3</sub>

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