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导电聚合物中热电性质的热温度调节:从离子热电到电子热电的过渡

Chunyu Zhao¹, Yidan Wu¹, Dongxing Song²

¹Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China.

ACS applied materials & interfaces

|September 11, 2025

概括

化导电聚合物 (CPs) 独特地调整热电特性,将它们从离子行为转变为电子行为. 这一发现使得高性能混合热电转换器具有显著增强的能量密度.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
收集能源收集能源

背景情况:

热电材料 (TEM) 在能源采集,制冷和传感方面至关重要.
导电聚合物 (CPs) 是具有双离子传输和电荷导电能力的有希望的TEM.
电流中的离子和电子热电之间的相互作用仍然未被充分探索.

研究的目的:

仅通过聚合物回火来证明CP中的可调节的热电特性.
研究PEDOT:PSS/EMIM:DCA复合材料中从离子转变为电子的热电行为.
开发一种高性能混合离子电子热电转换器.

主要方法:

使用聚合物回火作为调整热电性能的唯一方法.
采用了全面的表征技术来分析材料过渡.
使用在不同温度下炼的材料制造出混合热电转换器.

主要成果:

在PEDOT:PSS/EMIM:DCA复合材料中通过140°C以上的火实现了可调节的热电性能.
观察到一种由化诱导的相分离和导电网络形成所驱动的从离子到电子TEM行为的新型过渡.
开发了一种能量密度为13.99 J m-2的混合转换器,比纯离子转换器改进了17倍.

结论:

聚合物化是一种有效的策略,用于调整CP中的热电特性.
化引起的相分离在离子转电子过渡中起着关键作用.
这项研究提供了对CP中负载运输的基本见解,并指导了先进的TEM设计.

关键词:

索雷特效应是一种效应.热温度是指热温度的温度.导电聚合物是一种导电聚合物.离子热电材料离子热电材料热电材料是一种热电材料.

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