The role of the ceria dopant on Ni / doped-ceria anodic layer cermets for direct ethanol solid oxide fuel cell

Author(s)

da Silva, A. A. A. ^{[1, 2]} ; Steil, M. C. ^[3] ; Tabuti, F. N. ^[4] ; Rabelo-Neto, R. C. ^[5] ; Noronha, F. B. ^{[1, 5, 6]} ; Mattos, V, L. ; Fonseca, F. C. ^[4]

Affiliation

^[1] Mil Inst Engn, Chem Engn Dept, Praca Gal Tiburcio 80, BR-22290270 Rio De Janeiro - Brazil

^[2] V, Fluminense Fed Univ, Chem Engn Dept, Rua Passo Patria 156, BR-24210240 Niteroi, RJ - Brazil

^[3] Univ Savoie Mt Blanc, Univ Grenoble Alpes, CNRS, Grenoble INP, LEPMI, F-38000 Grenoble - France

^[4] IPEN CNEN SP, Inst Pesquisas Energet Nucl, Av Lineu Prestes 2242, BR-05508000 Sao Paulo - Brazil

^[5] Natl Inst Technol, Catalysis Div, Av Venezuela 82, BR-20081312 Rio De Janeiro - Brazil

^[6] Univ Artois, Univ Lille, CNRS, UMR 8181, Cent Lille, ENSCL, UCCS Unite Catalyse & Chim Solid, F-59000 Lille - France

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 46, n. 4, SI, p. 4309-4328, JAN 14 2021.
• Web of Science Citations: 2

Abstract

The effect of ceria dopant aiming at stability in Ni/doped-ceria anodic layers for direct ethanol solid oxide fuel cells (SOFC) was studied. Solid solutions of ceria doped with Y, Gd, Zr, or Nb (10 mol%) impregnated with NiO were tested in a fixed bed reactor for ethanol conversion reactions and for direct (dry) ethanol SOFC. The ceria dopant showed a marked effect on both the catalytic and the electrical transport properties of the ceramic support. Catalytic activity data revealed that the studied materials deactivate in ethanol decomposition reaction but are stable for ethanol steam reforming. Thus, feeding dry ethanol to the SOFC with a Ni/doped-ceria anodic catalytic layer evidenced that water produced from the electrochemical hydrogen oxidation provides steam for the internal reforming resulting in great stability of the fuel cells tested during similar to 100 h. The combined catalysis and SOFC results demonstrate Ni/doped-ceria is as candidate anode layer for stable SOFC running on bioethanol. (C) 2020 Hydrogen Energy Publications LLC. (AU)

• FAPESP's process: 13/26961-7 - Development of anodes for solid oxide fuel cells operating directly on renewable fuels
• Grantee: Fabio Coral Fonseca
• Support Opportunities: Regular Research Grants
• FAPESP's process: 14/09087-4 - Studies on the use of bioethanol in proton exchange membrane and solid oxide fuel cells
• Grantee: Marcelo Linardi
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 17/11937-4 - A sustainable path to methane conversion by advanced electrochemical technologies
• Grantee: Fabio Coral Fonseca
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
• Grantee: Julio Romano Meneghini
• Support Opportunities: Research Grants - Research Centers in Engineering Program