超强,灵活的热甲,卡诺的相对效率超过8
Jinpei Wang1, Yuxin Song2, Fanfei Yu2
1Department of Mechanical Engineering, City University of Hong Kong, Hong Kong SAR, P. R. China.
Nature communications
|August 7, 2024
概括
这项研究介绍了一种灵活的热盔甲,可以有效地将体温转化为可穿戴设备的电力. 这种新的设计实现了高效率和机械强度,使得自动供电的电子设备成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 收集能源 收集能源
- 可穿戴技术可穿戴技术
背景情况:
- 身体热量是可穿戴电子产品的有希望的清洁能源.
- 当前的热设备面临的是效率和机械强度之间的权衡.
- 实现5%的卡诺相对效率 (ηr) 对于实际应用至关重要.
研究的目的:
- 开发具有高效率和机械强度的灵活热制 (FTGA).
- 为了克服最大化效率和机械强度的相互排他性.
- 使用人体热量为可穿戴电子产品提供可持续的电力.
主要方法:
- 设计了一种灵活的热盔甲 (FTGA),利用热敏结晶和盐分效应.
- 设计了一条离子运输高速公路,以提高效率和机械性能.
- 研究了材料设计和能量转换之间的相互作用.
主要成果:
- 在室温附近达到8.53%的超高卡诺相对效率 (ηr).
- 证明了令人印象深刻的机械性 (70.65 MJ m−3) 和相当大的延伸 (~900%).
- 成功地平衡了高效率与强大的机械性能.
结论:
- 开发的FTGA提供了一种可持续的解决方案,用于收集体温.
- 这项技术可以在不需要充电的情况下为可穿戴电子设备提供动力.
- 理性设计策略对未来的自动供电可穿戴系统具有潜力.
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