磁性 CNT 桥接 MXene/CoNi 相变材料的多功能集成

IF 42.9 Q1 ELECTROCHEMISTRY
Yan Gao, Xiao Chen, Xu Jin, Chenjun Zhang, Xi Zhang, Xiaodan Liu, Yinhui Li, Yang Li, Jinjie Lin, Hongyi Gao, Ge Wang
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引用次数: 0

摘要

开发集零能热管理、微波吸收、光热治疗和电信号检测于一体的先进纳米复合相变材料(PCMs)可促进柔性可穿戴电子设备的跨越式发展。为此,我们提出了一种多维合作策略,将二维(2D)MXene 纳米片与源自金属有机框架的一维(1D)碳纳米管(CNTs)和零维(0D)金属纳米颗粒相结合。将石蜡(PW)封装在三维(3D)网络状多维 MXene/CoNi-C 中后,得到的复合 PCM 具有出色的热能储存能力和长期可靠的热稳定性。得益于 CNTs、Co/Ni 纳米粒子和 MXene 协同增强的光热效应,PW@MXene/CoNi-C 可高效捕获光子并快速传递声子,从而产生高达 97.5% 的超高光热转换和存储效率。此外,PW@MXene/CoNi-C 复合 PCM 还具有很高的微波吸收能力,在与热有关的电子应用场景中,8.03 GHz 时的最小反射损耗为 -49.3 dB。更具吸引力的是,相应的柔性相变薄膜可同时实现电子设备的热管理和电磁屏蔽,以及光热治疗和个人电信号检测。这种功能集成设计为开发先进的柔性多功能可穿戴材料和设备提供了重要参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Multifunction integration within magnetic CNT-bridged MXene/CoNi based phase change materials

Multifunction integration within magnetic CNT-bridged MXene/CoNi based phase change materials
Developing advanced nanocomposite phase change materials (PCMs) integrating zero-energy thermal management, microwave absorption, photothermal therapy and electrical signal detection can promote the leapfrog development of flexible wearable electronic devices. For this goal, we propose a multidimensional collaborative strategy combining two-dimensional (2D) MXene nanosheets with metal-organic framework-derived one-dimensional (1D) carbon nanotubes (CNTs) and zero-dimensional (0D) metal nanoparticles. After encapsulating paraffin wax (PW) in three-dimensional (3D) networked multidimensional MXene/CoNi–C, the resulting composite PCMs exhibit excellent thermal energy storage capacity and long-term thermally reliable stability. Benefiting from the synergistically enhanced photothermal effects of CNTs, Co/Ni nanoparticles and MXene, PW@MXene/CoNi–C can capture photons efficiently and transfer phonons quickly, yielding an ultrahigh photothermal conversion and storage efficiency of 97.5%. Additionally, PW@MXene/CoNi–C composite PCMs exhibit high microwave absorption with a minimum reflection loss of −49.3 ​dB at 8.03 ​GHz in heat-related electronic application scenarios. More attractively, the corresponding flexible phase change film can simultaneously achieve thermal management and electromagnetic shielding of electronic devices, as well as photothermal therapy and electrical signal detection for individuals. This functional integration design provides an important reference for developing advanced flexible multifunctional wearable materials and devices.
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CiteScore
33.70
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