Development of multilayer imprint process for solid oxide fuel cells

Kazuki Tokumaru, Fujio Tsumori, Kentaro Kudo, Toshiko Osada, Kazunari Shinagawa

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Solid oxide fuel cells (SOFCs) are fuel cells made of ceramics. To increase the SOFC energy density, we developed an SOFC with a wavy electrolyte layer. As a wavy electrolyte has a larger reaction surface area than a flat electrolyte, a higher energy density could be obtained. Our proposed process is named micro-powder imprint (μPI) with a multilayer imprint process that is useful for fabricating a microscale pattern on a ceramic sheet such as an SOFC electrolyte layer. μPI is based on nanoimprint lithography; therefore, it also exhibits the same advantages of high resolution and mass productivity. The starting material for μPI is a compound sheet containing ceramic powder and binder materials consisting of thermoplastic resin. In this study, two different sheets were stacked into one sheet as a multilayer sheet for the μPI process to form a wavy compound sheet. As the initial state of the stacked sheet, including the mechanical properties of each layer, affects the final wavy shape, we changed the material composition. As a result, the SOFCs unit cell with a wavy electrolyte was fabricated. Note that the anode layer was formed at the same time. After adding the cathode layer, we succeeded in preparing a complete cell for testing power generation.

Original languageEnglish
Article number06GL04
JournalJapanese Journal of Applied Physics
Volume56
Issue number6
DOIs
Publication statusPublished - Jun 1 2017

Fingerprint

solid oxide fuel cells
Solid oxide fuel cells (SOFC)
Multilayers
Electrolytes
Powders
electrolytes
ceramics
Nanoimprint lithography
thermoplastic resins
binders (materials)
flux density
Surface reactions
Thermoplastics
Power generation
Binders
Fuel cells
Anodes
Cathodes
Productivity
cells

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Development of multilayer imprint process for solid oxide fuel cells. / Tokumaru, Kazuki; Tsumori, Fujio; Kudo, Kentaro; Osada, Toshiko; Shinagawa, Kazunari.

In: Japanese Journal of Applied Physics, Vol. 56, No. 6, 06GL04, 01.06.2017.

Research output: Contribution to journalArticle

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