SOFC Modeling Considering Internal Reforming by a Global Kinetics Approach

Performance analysis of a SOFC under direct internal reforming conditions

This paper presents the performance analysis of a planar solid-oxide fuel cell (SOFC) under direct internal reforming conditions. A detailed olid-oxide fuel cell model is used to study the influences of various operating parameters on cell performance. Significant differences in efficiency nd power density are observed for isothermal and adiabatic operational regimes. The influence of air numbe...

SOFC Modeling - From Micro-Kinetics to Stacks

This paper presents a hierarchical modeling approach for Solid-Oxide Fuel Cells from elementary kinetics to stacks. On a fundamental level, we have developed an analytical model for the evaluation of volume specific three-phase boundary length (vLtpb) in composite electrodes and electrochemical kinetics expressions to account for coverage dependent activation energies of various surface adsorbe...

Reforming of JP-8 in Microplasmas for Compact SOFC Power

The attractive aspects of fuels cells for replacement of batteries in lightweight applications are offset by the need to efficiently produce a hydrogen feed stream on demand. Hydrogen is itself impractical for storage and hydrocarbon fuels provide the highest density form of hydrogen storage when taking into account both weight and volume. Currently, traditional catalytic processes are used for...

Reaction kinetics of nanostructured SOFC cathodes

SOFC Modeling Considering Electrochemical Reactions at the Active Three Phase Boundaries

It is expected that fuel cells will play a significant role in a future sustainable energy system, due to their high energy efficiency and the possibility to use renewable fuels. A fully coupled CFD model (COMSOL Multiphysics) is developed to describe an intermediate temperature SOFC single cell, including governing equations for heat, mass, momentum and charge transport as well as kinetics con...