Impedance spectroscopy analysis of percolation of ions within alkali salt- solid electrolytes ceramic membranes
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2024
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BRAZIL MRS MEETING, 22nd
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Electrochemical impedance spectroscopy (EIS) analysis was applied to evaluate the carbon
dioxide ionic conductivity at the interfaces of porous solid electrolytes impregnated with
alkali salts. An impedance analyzer was connected to an alumina sample holder with gold
electrodes and platinum terminal leads, inserted in a programmable tubular furnace. Yttria-stabilized
zirconia, samaria- and gadolinia-doped ceria, tungsten-doped lanthanum
molybdenum oxide porous solid electrolyte ceramic pellets were prepared by using either a
polymer or graphite as thermally removed sacrificial pore formers. Molten eutectic
compositions of sodium-potassium and/or lithium-sodium-potassium carbonates were
impregnated into the porous solid electrolytes. The collected [-Z"(f) x Z'(f)] impedance data
showed the evolution from oxygen ion conductivity to carbon dioxide ion conductivity when
the temperature of the ceramic pellets reached the melting point of the carbonates.
Endurance tests were performed to evaluate the lifespan of the composite ceramic pellets in
the molten state of the carbonates for either carbon dioxide capture or sensor device
evaluation.
Como referenciar
MUCCILLO, REGINALDO; CARVALHO, SABRINA G. de M.; MEDINA, MIDILANE S.; PORFIRIO, TATIANE C.; MUCCILLO, ELIANA N. dos S. Impedance spectroscopy analysis of percolation of ions within alkali salt- solid electrolytes ceramic membranes. In: BRAZIL MRS MEETING, 22nd, September 29 - October 3, 2024, Santos, SP. Abstract... São Carlos, SP: Aptor Software, 2024. p. 832-832. Disponível em: https://repositorio.ipen.br/handle/123456789/48940. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.