Sulphate-ceria Composite Ceramics for Energy Environmental Co-generation Technology

作     者：X. R. Liu B. Zhu J. Xu J.C. Sun and Z. Q. Mao Department of Chemical Engineering & Technology Royal Institute of Technology (KTH) S-10044 Stockholm SwedenGoeta Technology Developer International S-171 60 Solna Sweden Department of Physical Chemistry Norwegian University Science and Technology 7491Trondheim Norway Institute of Materials and Technology Dalian Maritime University Dalian 116026 P. R. ChinaChina Association for Hydrogen Energy Institute of Nuclear and New Energy Technology Tsinghua University Beijing P. R. China 

会议名称：《The 3～〔rd〕International Conference on High-Performance Ceramics(CICC-3)（1）》

会议日期：2004年

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

关 键 词：Samarium doped ceria (SDC) Li2SO4 composite O2- and H+ conduction FC 

摘      要：正 In this work ion conductivity and FC application were studied for the new type composite material based on SDC （samarium doped ceria） and Li2SO4. Significant conductivity enhancement was achieved, e.g. 10-2 - 0.4 Scm-1 for the SDC-Li2SO4 compared to 10-4 -10-2 Scm-1 for the SDC between 400 and 650℃. Some ion conductivity mechanisms were proposed correspondingly. Using the SDC-Li2SO4 composite materials as the electrolytes, we achieved high performances, 200-540 mWcm-2, for intermediate temperature （450-650℃） solid oxide FC （ITSOFC） applications. Sulfates, typically Li2SO4, have an excellent chemical stability in sulfur containing atmosphere. The sulfate-ceria （SDC-Li2SOA） composite materials can thus meet the demands to develop the sulfur tolerant and H2S FC technologies, which was also demonstrated successfully with significant importance for both fundamental and applied research.