Electrochemical Impedance Spectroscopy of Liquid Tin Anode Solid Oxide Fuel Cell

2019 ◽  
Vol 33 (39) ◽  
pp. 93-121 ◽  
Author(s):  
Sean C. Rayman ◽  
Mark Koslowske ◽  
Linda Bateman ◽  
Thomas Tao ◽  
Ralph E. White
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Fuel Cell ◽  
Impedance Spectroscopy ◽  
Solid Oxide Fuel Cell ◽  
Electrochemical Impedance ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Tin Anode ◽  
Liquid Tin

scholarly journals Evaluation of strontium substituted lanthanum manganite-based solid oxide fuel cell cathodes using cone-shaped electrodes and electrochemical impedance spectroscopy

2018 ◽  
Author(s):  
Kent Kammer Hansen
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Fuel Cell ◽  
Impedance Spectroscopy ◽  
Solid Oxide Fuel Cell ◽  
Electrochemical Impedance ◽  
Active Species ◽  
Solid Oxide ◽  
Lanthanum Manganite ◽  
Oxide Fuel ◽  
Strontium Content

<p class="PaperAbstract">Five La<sub>1-x</sub>Sr<sub>x</sub>MnO<sub>3+</sub><sub>d</sub>-based perovskites (x = 0, 0.05, 0.15, 0.25 and 0.50) were synthesized and investigated by powder XRD, dilatometry and electrochemical impedance spectroscopy measurements and cone-shaped electrode techniques. The thermal expansion coefficient increased with increasing strontium content. It was shown that the total polarization resistance was the lowest for the intermediate compound, La<sub>0.95</sub>Sr<sub>0.05</sub>MnO<sub>3+</sub><sub>d</sub>. Two arcs were found in the impedance spectra. These arcs were attributed to two one-electron processes. The results indicate that either Mn(III) is the catalytically active species or that the redox capacity is important for the activity of the compounds towards the reduction of oxygen in a solid oxide fuel cell. At higher temperatures, the oxide ionic conductivity may also play a role.</p>

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