Combustion synthesis of Cu₂SnSe₃ thermoelectric materials

详细信息    查看全文

• 作者：Guanghua Liu^a ; ^{liugh02@163.com" class="auth_mail" title="E-mail the corresponding author} ; Kexin Chen^b ; ^{kxchen@mail.tsinghua.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Jiangtao Li^a ; ^{lijiangtao@mail.ipc.ac.cn" class="auth_mail" title="E-mail the corresponding author} ; Yuyang Li^a ; Min Zhou^a ; Laifeng Li^a
• 关键词：Combustion synthesis ; Thermoelectric materials ; Solidification ; Gas pressure ; High-gravity
• 刊名：Journal of the European Ceramic Society
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：36
• 期：6
• 页码：1407-1415
• 全文大小：4218 K

文摘

Thermoelectric materials are attractive for solar thermal energy conversion and waste heat recovery. The existing methods for fabricating thermoelectric materials involve multi-step processes with considerable time and energy consumption. Here we report a fast and one-step way to prepare thermoelectric materials by gas-pressure or high-gravity assisted combustion synthesis. Dense Cu₂SnSe₃ samples with a porosity below 2% were prepared from self-sustained combustion reaction of element powders. The electrical conductivity of the Cu₂SnSe₃ samples was greatly enhanced and the thermal conductivity was reduced by partial substitution of Sn with In. The ZT values of the un-doped and In-doped Cu₂SnSe₃ samples reached 0.51 and 0.62 at 773 K, respectively, which are comparable to the best results reported for Cu₂SnSe₃ produced by other methods. Combustion synthesis offers an efficient way to prepare thermoelectric materials with reduced time and energy consumption, which may open up new possibilities for synthesis of thermoelectric materials.