材料科学
纳米复合材料
碳纳米管
热电效应
热电材料
塞贝克系数
纳米技术
复合材料
结晶
铸造
化学工程
热导率
热力学
物理
工程类
作者
Hayato Yabuki,Suguru Yonezawa,Rikuo Eguchi,Masayuki Takashiri
标识
DOI:10.1038/s41598-020-73808-4
摘要
Abstract Single-wall carbon nanotubes (SWCNTs) and Bi 2 Te 3 nanoplates are very promising thermoelectric materials for energy harvesting. When these two materials are combined, the resulting nanocomposites exhibit high thermoelectric performance and excellent flexibility. However, simple mixing of these materials is not effective in realizing high performance. Therefore, we fabricated integrated nanocomposites by adding SWCNTs during solvothermal synthesis for the crystallization of Bi 2 Te 3 nanoplates and prepared flexible integrated nanocomposite films by drop-casting. The integrated nanocomposite films exhibited high electrical conductivity and an n-type Seebeck coefficient owing to the low contact resistance between the nanoplates and SWCNTs. The maximum power factor was 1.38 μW/(cm K 2 ), which was 23 times higher than that of a simple nanocomposite film formed by mixing SWCNTs during drop-casting, but excluding solvothermal synthesis. Moreover, the integrated nanocomposite films maintained their thermoelectric properties through 500 bending cycles.
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