来自离子/电子混合纳米复合材料热电转换器在恒温梯度下巨大的功率输出
Siqi Liu1, Mingxia Zhang1, Junhua Kong2
1Department of Materials Science & Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117574, Singapore.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 23, 2024
概括
本研究介绍了一种新的混合纳米复合材料热电转换器,可以实现连续输出功率. 这项创新克服了当前热电设备的局限性,用于可持续的能源发电.
科学领域:
- 材料科学 材料科学 材料科学
- 能源转换 能源转换
- 纳米技术 纳米技术
背景情况:
- 热电 (TE) 材料将热量转化为电力,这对可持续发展至关重要.
- 电子TE发电机 (TEG) 的Seebeck系数较低,限制了效率.
- 离子TE电容提供高热电压,但提供不连续的功率.
研究的目的:
- 开发一种具有连续输出功率的热电转换器.
- 为了克服现有的TEG和离子TE电容器的局限性.
- 为了提高功率密度和热电能转换的效率.
主要方法:
- 制造一个离子/电子混合纳米复合材料TE转换器 (NCTEC).
- 碳纳米管/聚乳酸纳米纤维织物 (CPNF) 与凝离子凝的整合.
- 描述NCTEC的热电性能和输出功率.
主要成果:
- 该NCTEC实现了创纪录的高输出功率密度,通过1.72 mW m-2 K-2.2 的平方温度梯度 (Pave/ΔT2) 实现正常化.
- 在恒定的温度梯度下,连续12小时实现了连续的功率输出.
- 增强的界面电容效应和优化的电气特性有助于提高性能.
结论:
- 开发的NCTEC有效地克服了传统TEG和离子TE电容器的局限性.
- 这种混合方法为高效和连续的热电能发电提供了一个有前途的战略.
- 这些发现为先进的热电转换器铺平了道路,这些转换器具有可持续能源解决方案的巨大潜力.
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