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高强度的3D rGO气凝具有可调节的热电效应,用于多功能传感应用

Peng He^1,2, Junhong Liu^1,2, Yuansheng Wen^1,2

¹The Ministry of Education of China, Key Laboratory of Mechanics on Disaster and Environment in Western China (Lanzhou University), Lanzhou, 730000, P. R. China.

ACS applied materials & interfaces

|April 14, 2025

概括

研究人员开发了一种用于灵活传感器的新型3D减少氧化石墨烯热电气凝 (rGOTEA). 这种轻量级的超弹性材料提供可调节的热电特性和用于先进工程应用的多功能传感能力.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
收集能源收集能源

背景情况:

对于完全基于碳的灵活传感器的日益增长的需求需要多功能材料.
现有的3D石墨烯结构往往缺乏针对各种刺激反应的优化特性.

研究的目的:

为了创建一个新的三维 (3D) 减少氧化石墨烯热电气凝 (rGOTEA).
为了实现多功能传感能力和能量收获在一个灵活的,全碳基材料.

主要方法:

使用减少氧化石墨烯 (rGO) 板进行自下而上的组装.
三维气凝形成的双向冷挤压和重建处理.
含氧组和界面结合的定量调节.

主要成果:

制造的3D rGOTEA具有轻质密度 (≤5.4 mg cm−3),超弹性 (≥90%可回收应变) 和耐疲劳性.
实现了脱载体传输和声子散射,以优化热电性能.
具有高的电导率 (95.834 S m−1) 和低的热导率 (0.028 W m−1 K−1).
已证明可调节的Seebeck系数 (6.919.5μV/K),可对物理信号波动进行敏感检测.
rGOTEA设备显示多功能传感热,电和机械刺激.
组装的rGOTEA热能转换器在2.4K/mm温度梯度下产生了600μV.

结论:

3D rGOTEA为多功能传感器,隔热和能量收集提供了一个多功能平台.
该材料的独特结构和调节性质满足了对先进灵活电子设备的需求.
这项工作突出了可穿戴电子产品和可持续能源解决方案的有希望的应用.

关键词:

3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D rGOTEA 3D 能量转换器的能量转换器过度波动的微观结构.多功能传感反应的响应.热电效应是一种热电效应.

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