(1. 陜西科技大學(xué) 材料科學(xué)與工程學(xué)院，西安 710021；
2. 高知大學(xué) 理學(xué)院 附屬水熱化學(xué)研究所，高知 780-8520；
3. 重慶理工大學(xué) 材料科學(xué)與工程學(xué)院，重慶 400054；
4. 陜西科技大學(xué) 管理學(xué)院，西安 710021；
5. 豐田汽車(chē)公司，愛(ài)知 471-8572；
6. 大阪大學(xué) 焊接研究所，大阪 567-0047)
摘 要: 綜述近幾年國(guó)內(nèi)外有關(guān)β-Li2TiO3材料的結(jié)構(gòu)、制備方法以及應(yīng)用的研究進(jìn)展。詳細(xì)闡述β-Li2TiO3材料的超胞結(jié)構(gòu)，討論可能存在的點(diǎn)缺陷，研究不同點(diǎn)缺陷對(duì)其超胞結(jié)構(gòu)發(fā)育的影響；通過(guò)比較固相法、溶膠-凝膠法、燃燒合成法和水熱合成法等制備β-Li2TiO3粉體的典型方法，指出關(guān)鍵在于改善濕化學(xué)工藝方法，使能獲得超細(xì)粉體且保證超胞發(fā)育良好。分析β-Li2TiO3材料在氚增殖劑、鋰離子電池、發(fā)光材料和微波介質(zhì)材料等領(lǐng)域的重要應(yīng)用。
關(guān)鍵字: β-Li2TiO3；超胞結(jié)構(gòu)；缺陷；固相法；濕化學(xué)法；應(yīng)用
（1. School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China;
2. Research Laboratory of Hydrothermal Chemistry, Faculty of Science, Kochi University, Kochi 780-8520, Japan;
3. College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China;
4. School of Management, Shaanxi University of Science and Technology, Xi’an 710021, China;
5. Toyota Motor Corporation, Aichi 471-8572, Japan;
6. Joining and Welding Research Institute, Osaka University, Osaka 567-0047, Japan）
Abstract:Domestic and international development of the structure, preparation methods, and applications of β-Li2TiO3 was summarized. The supercell structure and the possible point defects in β-Li2TiO3 were discussed. Besides, the effect of point defects on the supercell structure evolution was investigated. Several typical preparation methods, including the solid state synthesis method, the sol-gel method, the combustion method, and the hydrothermal method, were compared. It is suggested that attention should be paid to the improvement of the wet chemical methods, in order to obtain fine particles with well-developed supercell structure. Some important applications of β-Li2TiO3 as in the tritium breeders, lithium ion battery, luminescent materials, and microwave dielectric materials were analyzed in details.
Key words: β-Li2TiO3; supercell structure; defect; solid state method; wet chemical method; application
