高效透气热电皮肤使用多模式辐射冷却/太阳能加热辅助大热梯度
Yeongju Jung1, Seongmin Jeong1, Jiyong Ahn1
1Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
Small (Weinheim an der Bergstrasse, Germany)
|August 31, 2023
概括
这项研究引入了一种新的Janus结构热电皮肤,用于可持续的能源采集. 这种可穿戴设备利用辐射冷却和太阳能加热,最大限度地提高热梯度,在各种天气条件下有效发电.
科学领域:
- 材料科学 材料科学 材料科学
- 收集能源 收集能源
- 可穿戴电子设备的电子产品
背景情况:
- 可穿戴式热电发电机因温度差异小而面临挑战.
- 优化热梯度对于有效地从身体和环境中收集能量至关重要.
- 现有的设备往往专注于热电发电机的效率,而不是最大限度地提高热梯度.
研究的目的:
- 开发一种可伸缩和透气的热电皮肤,具有双重辐射冷却 (RC) 和太阳能加热 (SH) 功能.
- 创建一个让乌斯结构,最大限度地提高热梯度,以提高能量收获.
- 根据环境条件实现自适应式发电.
主要方法:
- 化-多二甲基 (BP) 和石墨烯纳米板块-多二甲基 (GP) 纳米纤维 (NF) 基质的制造.
- 开发一个让斯结构,使翻转可获取热电皮肤 (FoTES).
- 使用BP NF集成RC能力 (ΔT冷却 = 4°C) 和使用GP NF进行太阳能加热.
主要成果:
- 在RC模式下,FoTES实现了5.73μW cm-2的最大输出功率 (Pmax),在SH模式下达到18.59μW cm-2的最大输出功率.
- 与RC模式相比,该设备在下午的SH模式中表现出优异的性能.
- 简乌斯结构通过根据天气条件切换模式来有效优化发电.
结论:
- 开发的Janus结构热电皮肤为可穿戴电子产品提供了可持续的动力来源.
- 双重RC和SH功能提供了可适应的能量收集能力.
- 这项工作通过最大限度地提高热梯度以提高功率输出来推进可穿戴式能源采集.
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