Enhancement of thermal transport via electrostatic surface modification by ionic organic additives under electric fields: A molecular dynamics study

IF 6.1 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2025-05-12 DOI:10.1016/j.applthermaleng.2025.126803

Haiyi Sun , Donatas Surblys , Taku Ohara

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Abstract

Enhancing interfacial heat transfer between graphite and polymers is crucial in modern technology. In this work, molecular dynamics simulations were conducted to study the heat transfer between graphite and polymers. Ionic organic additives (IOAs) were applied to enhance interfacial thermal transport under electric fields. IOAs are sodium dodecyl benzene sulfonate (SDBS) and dodecyl trimethyl ammonium bromide (DTAB). It was found that as the electric field strength increases, the interfacial thermal conductance increases. It was demonstrated that strong electric fields can dissociate IOAs and cause physical surface adsorption to enhance heat transfer. Adsorbed IOAs optimize vibration matching between graphite and polymers. Driven by electric field forces, IOAs migrate closer to the graphite interface, causing stronger repulsive van der Waals interactions and better transport of thermal energy. This study innovatively proposed a thermal management strategy, where electric fields cooperate with IOAs, expected to promote the development of electronic and energy equipment.

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离子有机添加剂在电场作用下通过静电表面修饰增强热传递：分子动力学研究

增强石墨和聚合物之间的界面传热是现代技术的关键。本文采用分子动力学方法研究了石墨与聚合物之间的热传递。应用离子有机添加剂（IOAs）增强电场作用下的界面热输运。ioa是十二烷基苯磺酸钠（SDBS）和十二烷基三甲基溴化铵（DTAB）。结果表明，随着电场强度的增大，界面导热系数增大。结果表明，强电场可以解离IOAs并引起物理表面吸附，从而增强传热。吸附的IOAs优化了石墨和聚合物之间的振动匹配。在电场力的驱动下，IOAs向石墨界面迁移，产生更强的排斥性范德华相互作用和更好的热能传递。本研究创新性地提出了电场与ioa协同的热管理策略，有望促进电子和能源设备的发展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.