lectric field-assisted sintering anode-supported single solid oxide fuel cel

Autor(es)

Muccillo, Reginaldo ^[1] ; de Florio, Daniel Zanetti ^[2] ; Fonseca, Fabio C. ^[1] ; Carvalho, Sabrina G. M. ^[1] ; Muccillo, Eliana N. S. ^[1]

Afiliação do(s) autor(es)

^[1] Energy & Nucl Res Inst, Travessa R 400, Cidade Univ, BR-05508170 Sao Paulo, SP - Brazil

^[2] Fed Univ ABC, Ctr Engn Modeling & Appl Social Sci, Santo Andre, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Applied Ceramic Technology; v. 19, n. 2 SEP 2021.
• Citações Web of Science: 0

Resumo

Cosintering (La0.84Sr0.16MnO3 thin-film cathode/ZrO2: 8 mol% Y2O3 thin-film solid electrolyte/55 vol.% ZrO2:8 mol% Y2O3 + 45 vol.% NiO anode, phi = 12 x 1.5 mm thick pellet) was achieved by applying an electric field for 5 min at 1200 degrees C. Impedance spectroscopy measurements of the anode-supported three-layer cell show an improvement of the electrical conductivity in comparison to that of a conventionally sintered cell. The scanning electron microscopy images of the cross-sections of electric field-assisted pressureless sintered cells show a fairly dense electrolyte and porous anode and cathode. Joule heating, resulting from the electric current due to the application of the AC electric field, is suggested as responsible for sintering. Dilatometric shrinkage curves, electric voltage and current profiles, impedance spectroscopy diagrams, and scanning electron microscopy micrographs show how anode-electrolyte-cathode ceramic cells can be cosintered at temperatures lower than the usually required. (AU)

• Processo FAPESP: 17/11937-4 - Rota sustentável para a conversão de metano com tecnologias eletroquímicas avançadas
• Beneficiário: Fabio Coral Fonseca
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs