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Activation, microstructure, and polarization of solid oxide fuel cell cathodes

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Abstract

Activation effect can be defined as the enhancement of the electrochemical performance or activity of the solid oxide fuel cell cathodes such as Sr-doped LaMnO3 (LSM) with the polarization/current passage treatment under fuel cell operation conditions. In this paper, the activation effect of the cathodic polarization/current passage on the O2 reduction reaction of the LSM-based cathodes is reviewed. In addition to the activation effect, cathodic polarization/current passage also has a significant effect on the microstructure of the LSM electrodes and the morphology between the LSM electrode and Y2O3-ZrO2 electrolyte interface. A mechanism involving the incorporation of SrO species into the LSM lattice and the formation of oxygen vacancies is proposed for the activation effect of the polarization.

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Authors and Affiliations

  1. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Ave., 639798, Singapore, Singapore

    San Ping Jiang

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  1. San Ping Jiang
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Correspondence to San Ping Jiang.

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Jiang, S.P. Activation, microstructure, and polarization of solid oxide fuel cell cathodes. J Solid State Electrochem 11, 93–102 (2007). https://doi.org/10.1007/s10008-005-0076-9

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  • DOI: https://doi.org/10.1007/s10008-005-0076-9

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