イットリアとすずをドープしたバリウム・ジルコニア電解質を用いた中温度プロトン伝導体固体酸化物燃料電池

抄録

In comparison with the conventional SOFC based on the conduction of oxide ion, the proton-conducting SOFC can be facilitated to high output power densities at significantly reduced operating temperatures between 600-800°C. Moreover, with the advantage of proton-conducting in this type of SOFC, a new alternative power generation system by integrating the proton-conducting SOFC with biomass gasification is very interesting in the near future. In this study a proton-conducting SOFC using BaZr_0.7Sn_0.1Y_0.2O_3-δ (BZSY) proton conductor was investigated. The solid oxide fuel cell with BZSY thin electrolyte was fabricated via simple and cost-effective dipping and sintering process. Although there was some cross-over of the single cell, the dense electrolyte was successfully developed with reduced sintering temperature at 1500°C by employing small amount of nickle oxide (NiO) as a sintering aid.