Numerical Analysis of Ammonia-Fueled Planar Solid Oxide Fuel Cells

摘要

Two-dimensional numerical model of an ammonia-fueled planar solid oxide fuel cell is developed to investigate the distributions of flow, temperature, species and electrochemical quantities within the cell. The model consists of the conservation equations of mass, momentum, energy, species and charge carriers, which are coupled by the electrochemical oxidation of hydrogen and ammonia decomposition reaction. Comparison between the direct ammonia supply and pre-decomposed ammonia supply cases gives basic understanding of the internal state of direct ammonia-fueled SOFCs, which are expected to be useful to find optimal operation conditions of the cells and to improve their performance.