Flexible Multiwalled Carbon Nanotubes/cellulose nanofibers Membrane with Rapid Temperature Increasing Induced by Interface Strengthening
Flexible Multiwalled Carbon Nanotubes/cellulose nanofibers Membrane with Rapid Temperature Increasing Induced by Interface Strengthening
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DOI：
10.1016/j.compositesa.2023.107911
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发表时间：
2023-11
期刊：
影响因子：
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通讯作者：
Siyao Chen;Zhiyu Chen;Yangling Ou;Junwei Lyu;Junning Li;Xiangyang Liu;Yang Liu
中科院分区：
文献类型：
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作者：
Siyao Chen;Zhiyu Chen;Yangling Ou;Junwei Lyu;Junning Li;Xiangyang Liu;Yang Liu
对于具有上级焦耳加热性能的先进电加热器，高电导率一直是关键问题。在此，除了公认的导电性因素，我们证明了复合材料的界面构成了显着的影响，作为电加热器的温度上升。具体而言，利用F2/N2直接吸附法选择性修饰多壁碳纳米管（MWCNTs）的外壁，同时保持内管的完整性，然后将其与纤维素纳米纤维（CNFs）复合，制备F-MWCNTs/CNFs柔性膜。由于界面处增强的静电相互作用和更强的声子振动耦合，界面声子扩散得到显着改善，这有利于在F-MWCNTs/CNFs膜相比，未改性的MWCNTs/CNFs膜在经受电场时，更高的温度升高速率。这种独特的界面效应为开发具有快速响应的高性能电加热器提供了希望。
Towards advanced electrical heaters with superior Joule heating property, high electrical conductivity has always been critical issue. Herein, in addition to the commonly recognized factor of electrical conductivity, we proved that the composite interface poses significant effect on temperature increasing as electrical heaters. Specifically, direct fluorination utilizing F2/N2was applied to selectively decorate the outer walls of multiwalled carbon nanotubes (MWCNTs) while keeping the inner tube intact, which was followed by compositing it with cellulose nanofibers (CNFs) to prepare F-MWCNTs/CNFs flexible membrane. Due to the enhanced electrostatic interaction at the interface and stronger phonon vibrational coupling, interfacial phonon diffusion was significantly improved, which facilitated a higher temperature increase rate in the F-MWCNTs/CNFs membrane compared to the unmodified MWCNTs/CNFs membrane when subjected to an electric field. This unique interfacial effect holds promise for the development of high-performance electrical heaters with rapid response.