Microstructural Property Investigation of LSM-4Sc4YSZ Novel Composite Electrode Prepared Using All-Alkoxide Sol-Gel and Solid-State Reaction Methods for Solid Oxide Electrochemical Cells

Pearl Jamela B. Diamansil; Rinlee Butch M. Cervera

doi:10.4028/p-O6h7AZ

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 950Microstructural Property Investigation of...

Microstructural Property Investigation of LSM-4Sc4YSZ Novel Composite Electrode Prepared Using All-Alkoxide Sol-Gel and Solid-State Reaction Methods for Solid Oxide Electrochemical Cells

Abstract:

Property investigation of co-doped 4 mol% scandia and 4 mol% yttria zirconia (Sc_0.08Y_0.08Zr_0.84O_1.92or 4Sc4YSZ) synthesized via solid-state reaction (SSR) and all-alkoxide sol-gel (SG) method as precursor powders with LSM as composite electrode was conducted. The microstructure and morphology of the precursor powders and resulting LSM-4Sc4YSZ bulk composite electrodes were characterized. The results revealed that the 4Sc4YSZ was successfully synthesized via SG with more distinct cubic phases and finer particles than 4Sc4YSZ prepared via SSR. A more homogeneous and uniform distribution for LSM-4Sc4YSZ SG was also observed with a porosity of 30.65%. Moreover, using electrochemical impedance spectroscopy (EIS), the LSM-4Sc4YSZ SG revealed a total conductivity of 0.158 S/cm at 700 °C with an activation energy of 0.018 eV.

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Periodical:

Key Engineering Materials (Volume 950)

Pages:

77-83

DOI:

https://doi.org/10.4028/p-O6h7AZ

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Online since:

July 2023

Authors:

Pearl Jamela B. Diamansil*, Rinlee Butch M. Cervera

Keywords:

4Sc4YSZ, All-Alkoxide Sol-Gel Method, Composite Electrode, Conductivity, LSM-4Sc4YSZ, Porosity, Solid-State Reaction

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