Thermal Transport in Conductive Polymer–Based Materials

Abstract

The demand for flexible conductive materials has motivated many recent studies on conductive polymer–based materials. However, the thermal conductivity of conductive polymers is relatively low, which may lead to serious heat dissipation problems for device applications. This review provides a summary of the fundamental principles for thermal transport in conductive polymers and their composites, and recent advancements in regulating their thermal conductivity. The thermal transport mechanisms in conductive polymer–based materials and up‐to‐date experimental approaches for measuring thermal conductivity are first summarized. Effective approaches for the regulation of thermal conductivity are then discussed. Finally, thermal‐related applications and future perspectives are given for conductive polymers and their composites.

Unique Thermoelectric Properties Induced by Intrinsic Nanostructuring in a Polycrystalline Thin‐Film Two‐Dimensional Metal–Organic Framework, Copper Benzenehexathiol

“…This value is comparable with the other values reported for 2D and 3D MOFs and conductive polymers. [ 21,29–33 ] The contribution from is proportional to σ (Wiedemann–Franz law) and is, in general, one or two orders of magnitude larger than in electrically conductive materials. [ 34 ] Though the device structure of the thermal conductivity measurement prevented us from measuring the electrical conductivity on the same sample, we can deduce that is negligible compared with , considering that the measured thermal conductivity is already close to the theoretical limit of phonon thermal conductivity: the minimum of the phonon mean free path is twice the interatomic distance.…”

Spherical filler‐promoting thermally conductive pathway in graphite‐containing polymer composites for high heat radiation

“…Heat conducting materials mediate between the heating device and heat radiation material to transfer the heat. Polymer composites containing heat conducting fillers have attracted significant attention for applications in heat conducting materials because of their light‐weight, flexibility, and easy‐processability . Various materials such as carbons, metals, and inorganic particles have been reported as heat conducting fillers that are blended into the matrix of thermo‐plastic or thermo‐setting polymer.…”

“…Polymer composites containing heat conducting fillers have attracted significant attention for applications in heat conducting materials because of their light-weight, flexibility, and easy-processability. [2][3][4][5][6][7] Various materials such as carbons, metals, and inorganic particles have been reported as heat conducting fillers that are blended into the matrix of thermo-plastic or thermo-setting polymer. When granular thermally conductive materials are used as fillers, the composite sheet exhibits isotropic thermal conductivity.…”

Phononic Thermal Transport in Yttrium Hydrides Allotropes

“…On the other hand, the thermal transport property is crucial for the performance and reliability of various devices, which can have promising applications in both thermal management and thermoelectric devices (Shi et al, 2012;Alva et al, 2018;Hu et al, 2018;Xie et al, 2018;Ouyang et al, 2019;Zhu et al, 2019;Xu et al, 2020;Zhang et al, 2020a;Zhang et al, 2020b). Especially the materials with high thermal conductivity and excellent mechanical properties are of great importance in solving the heat dissipation problem of highly integrated electronic devices (Ghosh et al, 2008).…”