Effects of Bi Addition on Sintering and Electrical Properties of Scandia Stabilized Zirocnia as Intermediate-Temperature SOFC Electrolyte

スポンサーリンク

概要

• 論文の詳細を見る

• The compatibility of bismuth compounds as a sintering aid for (ZrO2)0.89(ScO1.5)0.1(CeO2)0.01 (ScSZ) electrolyte in intermediate-temperature solid oxide fuel cells (IT-SOFCs) has been discussed. Addition of 3 mol% BiO1.5 considerably decreased the sintering temperature of ScSZ of approximately 200°C and achieved the densification with a relative density above 95% at 1200°C. The solid solubility limit of BiO1.5 in ScSZ was less than 2 mol%. Dispersion of Bi2O3 at the grain boundaries correspondingly accelerated the growth of ScSZ grains and increased the grain boundary resistance at temperatures below 450°C. At elevated temperatures of 450–750°C, the electrical conductivity of the ScSZ after doping remained almost unchangeable in air and under reducing atmospheres. The results suggested that bismuth addition is promising to be applicable to a low-temperature co-firing fabrication of ScSZ based components for IT-SOFCs.

• 公益社団法人 電気化学会の論文

著者

• Mori Masashi

  Central Research Institute Of Electric Power Industry

• HASHIMOTO Shin-ichi

  Center for Research Strategy and Support, Tohoku University

• YASUMOTO Kenji

  Central Research Institute of Electric Power Industry

• MA Shuhua

  Central Research Institute of Electric Power Industry

• LIU Yu

  Central Research Institute of Electric Power Industry

関連論文

• Pore Formation during Sintering of (Sr_La_)_TiO_Perovskites (x=0,0.04) Synthesized by the Pechini Method
• Investigation of Current Leakage of Micro-tubular SOFCs with a Ceria Membrane for Low-intermediate Temperature Power-generation Applications
• Pore Formation during Sintering of (Sr0.9La0.1)1－xTiO3+δ Perovskites (x=0, 0.04) Synthesized by the Pechini Method
• Effects of Bi Addition on Sintering and Electrical Properties of Scandia Stabilized Zirocnia as Intermediate-Temperature SOFC Electrolyte

スポンサーリンク