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Enhanced Electrochemical Reactivity at Electrolyte/electrode Interfaces of Solid Oxide Fuel Cells with Ag Grids

  • Choi, Mingi (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Hwang, Sangyeon (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Byun, Doyoung (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Lee, Wonyoung (Department of Mechanical Engineering, Sungkyunkwan University)
  • Received : 2015.08.03
  • Accepted : 2015.08.20
  • Published : 2015.09.30

Abstract

The specific role of current collectors was investigated at the electrolyte/electrode interface of solid oxide fuel cells (SOFCs). Ag grids were fabricated as current collectors using electrohydrodynamic (EHD) jet printing for precise control of the grid geometry. The Ag grids reduced both the ohmic and polarization resistances as the pitch of the Ag grids decreased from $400{\mu}m$ to $100{\mu}m$. The effective electron distribution along the Ag grids improved the charge transport and transfer at the interface, extending the active reaction sites. Our results demonstrate the applicability of EHD jet printing to the fabrication of efficient current collectors for performance enhancement of SOFCs.

Keywords

Solid oxide fuel cell;Electrolyte/electrode interface;Current collection;EHD jet printing;Ag grid

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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