Theoretical study for the sintering of Ni anode in solid oxide fuel cell

K. Nakao, T. Ogura, T. Ishimoto, Michihisa Koyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Ni sintering is one of the main factors in SOFC degradation. In this study, we first investigated the surface orientation on Ni nanoparticles by using molecular dynamics (MD) method. It was identified that Ni nanoparticles mainly consist of four facets: (111), (100), (110), and (113). We also analyzed the stability of surface energy, which is the dominant driving force for the sintering phenomena, in various sizes of Ni nanoparticles. The MD simulation of two particles system was performed to investigate the sintering phenomena. We found that the diffusion coefficient is almost the same between 1373 and 1673 K, while contact surface orientation is different. It is indicated that dominant sintering mechanism of Ni nanoparticles is surface diffusion.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 12, SOFC XII
Pages1661-1667
Number of pages7
Volume35
Edition2 PART 2
DOIs
Publication statusPublished - Dec 1 2011
Event12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada
Duration: May 1 2011May 6 2011

Other

Other12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
CountryCanada
CityMontreal, QC
Period5/1/115/6/11

Fingerprint

Solid oxide fuel cells (SOFC)
Anodes
Sintering
Nanoparticles
Molecular dynamics
Surface diffusion
Interfacial energy
Degradation
Computer simulation

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Nakao, K., Ogura, T., Ishimoto, T., & Koyama, M. (2011). Theoretical study for the sintering of Ni anode in solid oxide fuel cell. In Solid Oxide Fuel Cells 12, SOFC XII (2 PART 2 ed., Vol. 35, pp. 1661-1667) https://doi.org/10.1149/1.3570153

Theoretical study for the sintering of Ni anode in solid oxide fuel cell. / Nakao, K.; Ogura, T.; Ishimoto, T.; Koyama, Michihisa.

Solid Oxide Fuel Cells 12, SOFC XII. Vol. 35 2 PART 2. ed. 2011. p. 1661-1667.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nakao, K, Ogura, T, Ishimoto, T & Koyama, M 2011, Theoretical study for the sintering of Ni anode in solid oxide fuel cell. in Solid Oxide Fuel Cells 12, SOFC XII. 2 PART 2 edn, vol. 35, pp. 1661-1667, 12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting, Montreal, QC, Canada, 5/1/11. https://doi.org/10.1149/1.3570153
Nakao K, Ogura T, Ishimoto T, Koyama M. Theoretical study for the sintering of Ni anode in solid oxide fuel cell. In Solid Oxide Fuel Cells 12, SOFC XII. 2 PART 2 ed. Vol. 35. 2011. p. 1661-1667 https://doi.org/10.1149/1.3570153
Nakao, K. ; Ogura, T. ; Ishimoto, T. ; Koyama, Michihisa. / Theoretical study for the sintering of Ni anode in solid oxide fuel cell. Solid Oxide Fuel Cells 12, SOFC XII. Vol. 35 2 PART 2. ed. 2011. pp. 1661-1667
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