Nanowires as Building Blocks to Fabricate Flexible Thermoelectric Fabric: The Case of Copper Telluride Nanowires

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• 作者：Chongjian Zhou ; Chaochao Dun ; Qiong Wang ; Ke Wang ; Zhongqi Shi ; David L. Carroll ; Guiwu Liu ; Guanjun Qiao
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：September 30, 2015
• 年：2015
• 卷：7
• 期：38
• 页码：21015-21020
• 全文大小：458K
• ISSN：1944-8252

文摘

A general approach to fabricate nanowires based inorganic/organic composite flexible thermoelectric fabric using a simple and efficacious five-step vacuum filtration process is proposed. As an excellent example, the performance of freestanding flexible thermoelectric thin film using copper telluride nanowires/polyvinylidene fluoride (Cu_1.75Te NWs/PVDF = 2:1) as building block is demonstrated. By burying the Cu_1.75Te NWs into the PVDF polymer agent, the flexible fabric exhibits room-temperature Seebeck coefficient and electric conductivity of 9.6 渭V/K and 2490 S/cm, respectively, resulting in a power factor of 23 渭W/(mK²) that is comparable to the bulk counterpart. Furthermore, this NW-based flexible fabric can endure hundreds of cycles of bending tests without significant performance degradation.