Formation and Detection of High-Pressure Oxygen in Closed Pores of La_0.6Sr_0.4CoO_3-δ Solid Oxide Electrolysis Anodes.

ABSTRACT: The chemical capacitance of La_0.6Sr_0.4CoO_3-δ (LSC) thin film microelectrodes with different microstructures was investigated upon varying anodic DC voltages. Dense and porous electrodes (open porosity) were prepared by using different parameters during pulsed laser deposition (PLD). Furthermore, electrodes with closed porosity were fabricated by depositing a dense capping layer on a porous film. Electrochemical impedance spectroscopy (EIS) was performed in synthetic air at 460 and 608 °C with anodic DC voltages up to 440 mV. Chemical capacitance values of the electrodes were derived from the obtained spectra. While the chemical capacitance of dense and porous electrodes decreased as expected with increasing anodic overpotential, electrodes with closed pores

SUBMITTER: Krammer M 

PROVIDER: S-EPMC9326814 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature