Effect of Feedstock Type on Microstructure and Polarization of Plasma Sprayed LSM Cathode for Solid Oxide Fuel Cells

Abstract:

Plasma spraying is employed to prepare porous La0.8Sr0.2MnO3 (LSM) cathode for solid oxide fuel cells (SOFCs) using both liquid suspension and solid feedstocks. The surface morphology and microstructure of the LSM deposits are characterized by SEM. The electrochemical behavior is investigated through the impedance spectroscopy. The specific surface resistance of 0.36 Ω•cm2 and 0.74 was obtained at 1000oC for SPS and APS LSM cathodes, respectively. The polarization of SPS LSM cathode is lower than APS LSM cathode by a factor of 2 to 2.4 in the temperature range from 850 to 1000 oC.

• Periodical: Advanced Materials Research (Volume 683)
• Pages: 514-517
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.683.514
• Online since: April 2013
• Authors: Xiao Ming Wang, Chen Fang, Zhou Can Zhu, Ning Li
• Keywords: Atmospheric Plasma Spraying, Cathode Polarization, La_0.8Sr_0.2Mno₃, Solid Oxide Fuel Cell (SOFC), Suspension Plasma Spraying

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