阶段过渡的直接转换成电化学热力和佩尔蒂埃效应
Hongyao Zhou1, Fumitoshi Matoba1,2, Ryohei Matsuno1
1Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo, 113-0033, Japan.
Advanced materials (Deerfield Beach, Fla.)
|June 14, 2023
概括
研究人员开发了一种新型的热电池,使用一种热敏聚合物,poly(N-异烯酸烯胺-co-N-(2-烯胺乙烯) -N'-n-propylviologen) (PNV). 这种基于PNV的热电池实现了显著增强的Seebeck系数,证明了先进的热管理和制冷技术的潜力.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
背景情况:
- 热电池通过Seebeck效应将温度差异转化为电能.
- 电化学佩尔蒂耶效应允许温度差异由电流产生.
- 一个系统的Seebeck系数 (Se) 与其氧化还原反应的变化有关.
研究的目的:
- 为了研究一个热反应性聚合物与氧化还原活性部分,以提高热细胞性能.
- 探索聚合物相位转换和热能发电之间的关系.
- 评估这些系统在电化学热管理方面的潜力.
主要方法:
- 合成的聚N-异烯烯胺-co-N-二烯胺乙烯-N"-n-propylviologen) (PNV) 作为热细胞的氧化还原物种.
- 在其相位过渡过程中测量了PNV热电池的Seebeck系数 (Se).
- 使用差分扫描热度计 (DSC) 来验证变化计算.
主要成果:
- 在PNV热细胞的低临界溶液温度 (LCST) 时,Se显著增加到+2.1 mV K-1.
- 从Se增量中获得的变化与DSC测量有很好的相关性.
- 在LCST上方成功观察了电化学Peltier效应.
结论:
- 与聚合物线圈-球体过渡相关的显著变化可以大大提高热细胞性能.
- 基于PNV的热电池显示出电化学热管理和制冷应用的前景.
- 这项工作突显了智能聚合物在先进热电设备中的潜力.
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