高性能MoS2/SWCNT复合膜用于灵活的热电发电机
1School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China.
ACS applied materials & interfaces
|June 14, 2023
概括
二硫化物 (MoS2) 纳米片增强了用于柔性热电器件的单壁碳纳米管 (SWCNT) 复合材料. 这种兴奋剂提高了电导率和Seebeck系数,提高了可穿戴应用的整体热电性能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 收集能源 收集能源
背景情况:
- 单壁碳纳米管 (SWCNTs) 为可穿戴热电器件提供了灵活性和导电性.
- 然而,低的Seebeck系数和高的导热率限制了它们的热电应用.
- 提高基于SWCNT的材料的热电性能对于实际使用至关重要.
研究的目的:
- 制造具有增强热电性能的MoS2/SWCNT复合膜.
- 调查MoS2兴奋剂对SWCNT热电性能的影响.
- 用开发的复合材料来演示一个实际的热电装置.
主要方法:
- 独立的MoS2/SWCNT复合膜的制造.
- 用MoS2纳米片对SWCNT进行兴奋剂,以创建复合材料.
- 热电性质的表征,包括西贝克系数 (S) 和电导率 (σ).
主要成果:
- 通过MoS2/SWCNT接口的能量过效应,MoS2注改善了Seebeck系数 (S).
- 由于S-π相互作用的载体传输改善,电导率 (σ) 得到了增强.
- 在室温下达到131.9±4.5μW m−1 K−2的最大功率系数.
- 一个热电装置在50K温度梯度下显示出0.43μW的最大输出功率.
结论:
- 与原始SWCNT相比,MoS2/SWCNT复合材料显示显著增强的热电性能.
- 开发的复合膜为高性能柔性热电器件提供了一个有前途的途径.
- 本文介绍了一种简单的方法来提高基于SWCNT的材料的热电性能.
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