一种三种模式的光热,相变和辐射冷却膜,用于全天热电发电
Mingtai Hou1, Hao Chen1, Song Li2
1School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Advanced materials (Deerfield Beach, Fla.)
|July 7, 2025
概括
一种新型的微封装相变材料 (MPCM) 可实现24小时的太阳能热电发电. 这种材料整合了光热转换,能量储存和辐射冷却,以持续收集能量.
科学领域:
- 材料科学 材料科学 材料科学
- 可再生能源工程可再生能源工程
- 纳米技术 纳米技术
背景情况:
- 太阳能热电转换对离网应用具有前景,但由于输出密度和间歇性较低而受到限制.
- 由于太阳辐射的波动性,现有的技术在稳定的能源供应方面扎.
研究的目的:
- 设计和开发用于连续太阳能热电发电的多功能材料.
- 在太阳能应用中克服间歇性和低输出密度的局限性.
主要方法:
- 开发具有n-Tetracosane核心和TiO2/Ti2O3复合体外的微封装相变材料 (MPCMs).
- 通过将聚二甲基和MPCM薄膜与热电模块相合来制造热电系统.
- 描述MPCM属性,包括潜热,光热转换效率和能量储存能力.
主要成果:
- 开发的MPCM显示出高潜热 (144.5 J g−1),极佳的光热转换效率 (93.7%),以及100%的能量储存能力.
- 热电系统实现了24小时不间断的自适应发电,输出功率密度从6.1到21.1Wm-2.2不等.
- 该材料成功地集成了光热转换,相变能量储存和辐射冷却功能.
结论:
- 创新的多功能材料设计能够从太阳辐射和冷空间中适应性收集能量.
- 这种进步为可重复储能和高质量的太阳能利用提供了新的途径.
- 开发的技术为推进全日用太阳能热电发电系统提供了巨大的潜力.
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