可扩展生产的3D弹性热电网络用于收集体温
Yijie Liu1,2, Xiaodong Wang3, Shuaihang Hou3
1School of Physics, Harbin Institute of Technology, Harbin, 150001, PR China.
Nature communications
|May 27, 2023
概括
研究人员使用一种新的浸方法开发了一台灵活的热电发电机. 这种可穿戴设备有效地收集人体热量供电电子设备,实现高输出功率,具有出色的弹性.
科学领域:
- 材料科学 材料科学 材料科学
- 收集能源 收集能源
- 纳米技术 纳米技术
背景情况:
- 灵活的热电发电机 (TEG) 通过将人体热量转化为电力来为可穿戴电子设备提供动力至关重要.
- 现有的材料往往损害了性能的灵活性,限制了实际应用.
- 需要先进的热电材料,既能提供高效率,又能提供机械强度.
研究的目的:
- 开发一种简单,具有成本效益和可扩展的方法来制造高度灵活和高效的热电材料.
- 为了研究一个新的三维热电网络的热电特性和机械特性.
- 为了证明这种材料在灵活的热电发电机应用中的潜力.
主要方法:
- 采用两步浸方法,创建了一个三维的热电网络结构.
- 材料的特性,包括重量,导热性,柔软性和延长性,都得到了描述.
- 测量了制造的柔性热电发电机的输出功率.
主要成果:
- 制造的材料具有超轻的重量 (0.28 g cm−3),超低的导热率 (0.04 W m−1 K−1),中等的软度 (0.03 MPa) 和高延伸度 (>100%).
- 基于网络的灵活热电发电机实现了高输出功率4μW cm−2.2.
- 性能可与最新的批量灵活热电发电机相提并论.
结论:
- 开发的两步浸方法为高性能灵活热电材料提供了可扩展和具有成本效益的途径.
- 独特的网状结构提供了出色的弹性和优越的热电性能.
- 这一突破使得先进的可穿戴电子产品能够通过身体热量收获获得动力.
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