Multiscale Electrochemistry Modeling of Solid Oxide Fuel Cells

• DOI: 10.1615/intjmultcompeng.v3.i1.30
• Publication Date: 2005-04-16T11:05:31Z
• Authors: M. A. Khaleel; D. R. Rector; Z. Lin; K. Johnson; K. Recknagle
• Keywords: Microscale chemistry; Electrochemical energy conversion; Heat Generation

In this paper, we present two levels of electrochemical modeling for solid oxide fuel cells: cell continuum and microscale electrochemistry. The electrochemistry model simulates the performance porous electrode materials based on microstructure material, distribution reaction surfaces, transport oxygen ions through material. overall current-voltage relations are obtained using form basic input to level model. calculates current electrical density, voltage, heat production in stacks with H2 or other fuels, taking into account as inputs local values gas partial pressures temperatures. This approach is a parameterized (I-V) relation includes generation from both Joule heating chemical reactions. It also accounts species destruction via mass balance. then coupled flow-thermal-mechanical simulation framework stack design optimizing operating conditions.