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Updated: Jan 7, 2026

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工程液晶弹性体解锁了纤维形离子热电电容器的高热力

Liuqi Cao¹, Tingting Sun^2,3, Huiru Zhao¹

¹State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China.

Nature communications

|December 30, 2025

概括

研究人员使用液晶弹性体 (LCE) 开发了先进的离子热电 (i-TE) 材料,以有效地收集低等级的热量. 这些材料显示出灵活的电子和热电荷储能应用的巨大潜力.

科学领域:

材料科学材料科学材料科学
收集能源收集能源
热电学是一种热电学.

背景情况:

离子热电 (i-TE) 材料对低质量的热能采集具有前景.
n型i-TE材料的开发落后于p型,阻碍了应用.
液晶弹性体 (LCE) 为先进材料提供可调节的特性.

研究的目的:

设计新的n型和p型i-TE材料,以改善热能采集.
克服现有的i-TE材料,特别是n型对应材料的局限性.
为了证明这些材料的整合到功能性热电器件.

主要方法:

从侧链到主链结构的工程LCE.
使用 LiBF4 或 EMIM TFSI 电解质膨胀的 LCE.
使用p/n对制造的纤维状i-TE电容器.

主要成果:

实现了最大的可调 p-n Seebeck 系数跨度 (-27.4 到 28.8 mV K-1) 对 30% RH 以下同类材料.
集成了一个均的π型纤维形i-TE电容器,有三个p/n对.
产生的输出电压为402.5mV,温度差为2.5K.
每个n型纤维的面积能量密度达到8.1mJ m−2.
在循环拉伸,长期测试和热循环下表现出优异的材料稳定性.

结论:

基于LCE的工程i-TE材料表现出优越的n型和p型性能.
开发的材料使灵活的设备能够有效地储存热电荷能量.
这些发现凸显了基于LCE的i-TE材料在可穿戴设备和灵活电子产品中的潜力.

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