F203 数値計算による燃料極支持固体酸化物形燃料電池の分極特性の評価(OS-5 水素・燃料電池(3),一般講演,地球温暖化防止と動力エネルギー技術)

抄録

Heat and mass transfer with electrochemical reaction in an anode-supported flat-tube solid oxide fuel cell (FT-SOFC) is studied. The model takes into account the effects of ionic conductivity and dispersed triple phase boundary (TPB) inside the electrode. Three phase boundary length and tortuosity factor from the experimental data were used in the model. The model is evaluated with the experimental data of cells with different anode microstructures. Good agreement was obtained for the cells without poreformers, while predicted output voltage was larger for cells with large porosities. Gas diffusion seems to be overestimated in the model.