Simplified Resistor Network Calculation for Electrical and Mass Transport in Anode-Supported Planar Solid Oxide Fuel Cell

연료극지지 평판형 고체산화물 연료전지 내에서의 전기 및 물질전달에 대한 간략화된 저항 네트워크 계산

A simplified resistor network model for electrical and mass transport in anode-supported planar solid oxide fuel cell (SOFC) was constructed in order to investigate the effect of interconnect rib geometry on the cell performance. For accurate potential calculation, activation and concentration over-potentials at the electrode/electrolyte interfaces were fully considered in this calculation. When contact resistance was not considered, the optimum interconnect rib length were calculated to be $0.1{\sim}0.2$ mm for 2 mm half unit cell for given operation conditions and properties. However, with realistic contact resistance, the interconnect rib length should be increased to provide larger contact area and thus to obtain better performance.