通过阳光照射,被动冷却能够通过一滴水在阳光照射下持续发电
Jie Huang1, Shining Geng1, Xiuying Huang1
1Frontiers Science Center for High Energy Material, School of Interdisciplinary Science, Beijing Institute of Technology, Beijing 100081, China.
ACS nano
|January 30, 2026
概括
这项研究介绍了一种新型陶,用于使用单一水滴产生持久的蒸发电力 (EEG). 它的被动冷却可以防止太阳能引起的干燥,使得即使在户外也能持续输出电力.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续能源 可持续能源
- 纳米技术纳米技术
背景情况:
- 蒸发式发电 (EEG) 提供可持续的能源,但受到水源依赖和太阳能干燥的限制.
- 当前的EEG纳米发电机在脱离散装水时会发生故障,这限制了它们的实际应用.
- 由于太阳热效应,户外阳光照射会抑制EEG,阻碍设备的性能.
研究的目的:
- 开发一种双功能陶,在户外太阳能条件下从一滴水中持续发电.
- 将被动冷却与收获电力的功能集成到一个单一的设备中.
- 克服当前EEG技术的局限性,以获得更广泛的地理适用性.
主要方法:
- 设计了一种具有单向和层次性的多孔结构的陶.
- 通过增强的太阳光散射和热辐射发射率来设计陶以被动冷却.
- 在模拟的户外太阳能强度下,使用单一水滴测试了基于陶的纳米发电机的性能.
主要成果:
- 在强烈的阳光照射下,陶表现出自我冷却效应,将峰值温度降低了14.2°C.
- 纳米发电机在36分钟内产生2.1V,仅使用100微升水.
- 该设备证明了在户外太阳能强度 (780 W m-2) 下从单一滴滴中持续发电.
结论:
- 开发的双功能陶能够通过被动冷却增强,从单一水滴中产生持久的电力.
- 这项技术解决了蒸发式发电中太阳能诱导干燥的关键挑战.
- 这些发现为在不同地理位置实际部署EEG技术铺平了道路.
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