Lightweight thermal interface materials based on hierarchically structured graphene paper with superior through-plane thermal conductivity

被引:76
作者
Gao, Jingyao [1 ,2 ]
Yan, Qingwei [1 ,3 ]
Lv, Le [1 ,2 ]
Tan, Xue [1 ,2 ]
Ying, Junfeng [1 ,2 ]
Yang, Ke [1 ,2 ]
Yu, Jinhong [1 ,2 ]
Du, Shiyu [4 ]
Wei, Qiuping [5 ]
Xiang, Rong [6 ]
Yao, Yagang [7 ,8 ]
Zeng, Xiaoliang [9 ]
Sun, Rong [9 ]
Wong, Ching-Ping [10 ]
Jiang, Nan [1 ,2 ]
Lin, Cheng-Te [1 ,2 ]
Dai, Wen [1 ,2 ]
机构
[1] Chinese Acad Sci, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
[3] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Peoples R China
[4] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn NIMTE, Ningbo 315201, Peoples R China
[5] Cent South Univ, Sch Mat Sci & Engn, State Key Lab Powder Met, Changsha 410083, Peoples R China
[6] Univ Tokyo, Dept Mech Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
[7] Nanjing Univ, Jiangsu Key Lab Artificial Funct Mat, Coll Engn & Appl Sci, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
[8] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China
[9] Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China
[10] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
基金
国家重点研发计划; 中国博士后科学基金;
关键词
Graphene; Hierarchical structure; Thermal conductivity; Thermal interface material; COMPOSITES; LIQUID; NANOCOMPOSITES; CONDUCTANCE; MANAGEMENT; TRANSPORT; ELECTRON; SILICON; FILMS;
D O I
10.1016/j.cej.2021.129609
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Graphene-based papers have recently triggered considerable interests in developing the application as thermal interface materials (TIMs) for addressing the interfacial heat transfer issue, but their low through-plane thermal conductivity (kappa perpendicular to), resulting from the layer-by-layer stacked architecture, limits the direct use as TIMs. Although various hybrid graphene papers prepared by combining the graphene sheets and the thermally conductive insertions have been proposed to solve this problem, achieving a satisfactory kappa perpendicular to higher than that of commercial TIMs (>5 W m-1 K-1) remains challenging. Here, a strategy aimed at the construction of heat pathways along the through-plane direction inside the graphene paper for achieving a high kappa perpendicular to was demonstrated through the simultaneous filtration of graphene sheets with two different lateral sizes. The as-prepared graphene paper presented a hierarchical structure composed of loosely stacked horizontal layers formed by large graphene sheets, intercalated by a random arrangement of small graphene sheets. Due to the heat pathways formed by small graphene sheets along the through-plane direction, the hierarchically structured graphene paper exhibited an improved kappa perpendicular to as high as 12.6 W m-1 K-1 after a common graphitization post-treatment. In the practical test, our proposed paper as an all-graphene TIM achieved an enhancement in cooling efficiency of approximate to 2.2 times compared to that of the state-of-the-art TIM, demonstrating its superior performance to meet the ever-increasing heat dissipation requirement.
引用
收藏
页数:9
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