Metal-Level Thermally Conductive yet Soft Graphene Thermal Interface Materials

Dai, Wen; Ma, Tengfei; Qu, Yan; Gao, Jingqing; Tan, Xianjun; Liu, Le; Hou, Hao; Wei, Qiuping; Yu, Jinhong; Wu, Jianbo; Yao, Yagang; Du, Shiyu; Sun, Rong; Jiang, Nan; Wang, Yan; Kong, Jing; Wong, Ching‐Ping; Maruyama, Shigeo; Lin, Cheng‐Te

doi:10.1021/acsnano.9b05163

Cited by 266 publications

(178 citation statements)

References 67 publications

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“…Moreover, there are other methods includes in the fabrication of TIMs such as mechanical machining to developed graphene monolith from graphene paper that offers proper graphene orientation by obtaining high through‐plane thermal conductivity of 143 W/mK without further chemical or physical optimized treatment. The materials deformability also keeps consistent with reducing thermal contact resistance and excellent heat dissipation, with temperature decreased of 38°C 137 …”

Section: Fabrication Methods Of Timssupporting

confidence: 57%

A review of thermal interface material fabrication method toward enhancing heat dissipation

et al. 2020

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Summary Thermal interface materials (TIMs) are applied in electronic devices that are involved in heat generation and raising the temperature. The optimization of TIMs is important in heat dissipation to maintain the good performance of devices, low power during operation, and reduced internal damages among small components. The TIMs are inserted between two contact surfaces to enhance thermal conductivity that will reduce the increment of surface temperature in a longer time and facilitates the cooling process with a consistent power supplied to the system with minimum increment. Research on nanomaterials and hybrid materials aims to obtain maximum thermal conductivity and reduce resistance in the devices. However, the suitable fabrication method for achieving good production and performance is still debatable. Therefore, significant fabrication methods have been explored for various materials. This review provides insights into the current work focusing on the materials used in the development of TIMs by various methods. The discussion begins with the introduction of thermal management and the working principles applied in the system. Then, the methods applied for material fabrication into TIMs, including the advantages and disadvantages of the methods, are discussed. Last, the current challenges and opportunities in methods used are discussed to offer new inputs and improvement in method modification for TIMs design. The targeted thermal performance for the industrial market of TIMs for nanomaterial applications is approximately 100 W/mK and 1 × 10−6 m2/WK with lowest power of 100 W.

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Section: Fabrication Methods Of Timssupporting

confidence: 57%

A review of thermal interface material fabrication method toward enhancing heat dissipation

et al. 2020

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“…Top-down graphene nanoflakes [114] 10 ----rGO/epoxy composite [20] 2.65 ----VAGF [21] 614.86 -86.023 2.255 -GF/E-40 [23] 384.9 -910. 77 12.33 -AGAs [25] 6.57 -20/150 -GHF-2800 [24] 35.5 -406 --HLGP [16] 143 5.8-22.5 -0.87 -Bottom-up VG arrays [12] 53.5 11.8 ---VG [17] 680 ----…”

Section: Resultsmentioning

confidence: 99%

“…The preparation methods are divided into top-down methods and bottom-up methods according to the different approaches to assembling raw materials. One of synthesizing VG by self-assembly of GO sheets [16,[18][19][20][21][22][23][24][25] or organic supermolecules with benzene rings [26] belongs to the top-down method, while the others of synthesizing VG by splicing together carbon fragments or carbon atoms are classified as the bottom-up methods. In the following sections, we will discuss these two different methods for preparing VG in detail.…”

Section: Preparation Of Vg Structurementioning

confidence: 99%

Vertically Aligned Graphene for Thermal Interface Materials

Zhang

2020

Small Structures

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With the rapidly increasing power density and integration level in electronic devices, the development of the next generation of thermal interface materials (TIMs) with substantially high thermal conductivity is essential for various device technologies. Graphene, exhibiting ultrahigh in‐plane thermal conductivity, is investigated intensely for improving the heat dissipation performance. To satisfy the requirements of high vertical thermal conductivity of TIMs, numerous efforts have been made toward the development of the assembly method of graphene sheets extending the intrinsic properties of graphene to macro graphene‐based TIMs. A successful approach that erects graphene sheets to construct a vertical structure of graphene material has been widely demonstrated to significantly increase the thermal conductivity of graphene‐based TIMs. In this review, the latest advances in the rational design and controllable fabrication of vertical graphene structures by means of top‐down and bottom‐up methods are summarized. Moreover, the state‐of‐the‐art progress on graphene‐based TIMs is discussed from the viewpoint of material fabrication, structure design, and property optimization. Finally, the existing advantages, challenges, and perspectives of high‐thermal‐conductivity graphene‐based TIMs are presented and highlighted.

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Section: Thermal Transportation Of Graphene/polymer Nanocompositesmentioning

confidence: 99%

“…Vertically aligning graphene nanosheets in polymer matrix were extensively explored. [ 205 ] However, most nanocomposites with vertical alignment of graphene embedded in matrix do not have desirable through‐plane TC (less than 5 W m −1 K −1 ). To further increase the density of graphene monoliths, Lin et al.…”

Section: Thermal Transportation Of Graphene/polymer Nanocompositesmentioning

confidence: 99%

Recent Progress in Graphene/Polymer Nanocomposites

et al. 2020

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Nanocomposites, multiphase solid materials with at least one nanoscaled component, have been attracting ever‐increasing attention because of their unique properties. Graphene is an ideal filler for high‐performance multifunctional nanocomposites in light of its superior mechanical, electrical, thermal, and optical properties. However, the 2D nature of graphene usually gives rise to highly anisotropic features, which brings new opportunities to tailor nanocomposites by making full use of its excellent in‐plane properties. Here, recent progress on graphene/polymer nanocomposites is summarized with emphasis on strengthening/toughening, electrical conduction, thermal transportation, and photothermal energy conversion. The influence of the graphene configuration, including layer number, defects, and lateral size, on its intrinsic properties and the properties of graphene/polymer nanocomposites is systematically analyzed. Meanwhile, the role of the interfacial interaction between graphene and polymer in affecting the properties of nanocomposites is also explored. The correlation between the graphene distribution in the matrix and the properties of the nanocomposite is discussed in detail. The key challenges and possible solutions are also addressed. This review may provide a constructive guidance for preparing high‐performance graphene/polymer nanocomposite in the future.

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Metal-Level Thermally Conductive yet Soft Graphene Thermal Interface Materials

Cited by 266 publications

References 67 publications

A review of thermal interface material fabrication method toward enhancing heat dissipation

A review of thermal interface material fabrication method toward enhancing heat dissipation

Vertically Aligned Graphene for Thermal Interface Materials

Recent Progress in Graphene/Polymer Nanocomposites

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