Multi-physics Modeling of Solid Oxide Fuel Cells with Parallel Oxygen Reduction Reaction Pathways
Tao Yang1, Jian Liu1, Shiwoo Lee1 ,2, Harrry Finklea1 ,3, Harry W. Abernathy1 ,2, Gregory A. Hackett1
1US Department of Energy, National Energy Technology Laboratory, Morgantown WV; 2AECOM Corporation, Morgantown WV; 3West Virginia University, Morgantown WV
• As the main source of energy loss in SOFCs, oxygen reduction reaction (ORR) process of LSM based cathode is of great interest. However, the fundamentals such as kinetic mechanism of the ORR remain unclear.
• For an in-depth understanding of electrodes, a reaction model involving elementary reaction steps is more suitable than models for global reactions, e.g. Butler-Volmer model.
• The calibration of multistep ORR mechanism is lacking in the past literature due to the incredible complexity from a large number of parameters.
