Mg_2Si基热电材料的制备与掺杂研究现状  

Recent Research Progress on the Mg_2Si Based Thermoelectric Materials

作　　者：曹萌萌[1,2] 周园[1] 任秀峰[1] 年洪恩[1] 李翔[1,2] 

机构地区：[1]中国科学院盐湖研究所盐湖资源与化学中国科学院重点实验室,西宁810008 [2]中国科学院大学,北京100049

出　　处：《硅酸盐通报》2012年第5期1145-1149,共5页Bulletin of the Chinese Ceramic Society

基　　金：中国科学院知识创新工程重要方向项目资助(No.KZCXZ-YW-343)

摘　　要：热电材料是一种性能优越的环境友好型材料,它能够直接把电能和热能相互转化,是目前新技术能源材料领域的关键材料。Mg2Si基半导体是一种新型的中温区热电材料,具有热电值高,原料无毒害等优点,由于镁的活性较高,如何制备出性能更加优良的Mg2Si基块体热电材料成为本领域研究的重点。本文简要介绍了Mg2Si基热电材料的基本性质,阐述其各种制备方法和掺杂研究现状,并展望其未来研究方向。Thermoelectric materials can convert electricity into heat reversible directly. It is a material which has a superior performance with a environment-friendly property. Mg2Si based semiconductor is one of the most promising material among the entire semiconductor materials which are nontoxic and cheap. It has a potentially high dimensionless figure of merit ZT. And it is very difficult to synthesize Mg2Si alloy because of the high activity of magnesium. So it becomes the researching key about how to synthesize high performance Mg2Si based thermoelectric materials. In this paper, introduced, the preparation methods and the doping of Mg-Si the basic properties had been briefly based thermoelectric materials and its research progress had been reviewed. Based on the introduction of the various synthetic methods, the advantages and disadvantages of these methods as well as how to improve them were summarized. What~ more, the development direction of thermoelectric materials had been prospected.

关 键 词：热电材料 制备方法 SI基 掺杂 环境友好型 相互转化 能源材料 新技术 

分 类 号：TB383[一般工业技术—材料科学与工程]