journal article·2021-04-27

Ultrahigh-Aspect-Ratio Boron Nitride Nanosheets Leading to Superhigh In-Plane Thermal Conductivity of Foldable Heat Spreader

Qingwei Yan, Wen Dai, Jingyao Gao, Xue Tan, Le Lv, Junfeng Ying, Xiaoxin Lu, Jibao Lu, Yagang Yao, Qiuping Wei, Rong Sun, Jinhong Yu, Nan Jiang, Ding Chen, Ching-Ping Wong, Rong Xiang, Shigeo Maruyama, Cheng-Te Lin

ACS Nano· Volume 15· Issue 4
Publisher page

Abstract

The rapid development of integrated circuits and electronic devices creates a strong demand for highly thermally conductive yet electrically insulating composites to efficiently solve “hot spot” problems during device operation. On the basis of these considerations, hexagonal boron nitride nanosheets (BNNS) have been regarded as promising fillers to fabricate polymer matrix composites. However, so far an efficient approach to prepare ultrahigh-aspect-ratio BNNS with large lateral size while maintaining an atomically thin nature is still lacking, seriously restricting further improvement of the thermal conductivity for BNNS/polymer composites. Here, a rapid and high-yield method based on a microfluidization technique is developed to obtain exfoliated BNNS with a record high aspect ratio of ≈1500 and a low degree of defects. A foldable and electrically insulating film made of such a BNNS and poly(vinyl alcohol) (PVA) matrix through filtration exhibits an in-plane thermal conductivity of 67.6 W m –1 K –1 at a BNNS loading of 83 wt %, leading to a record high value of thermal conductivity enhancement (≈35 500). The composite film then acts as a heat spreader for heat dissipation of high-power LED modules and shows superior cooling efficiency compared to commercial flexible copper clad laminate. Our findings provide a practical route to produce electrically insulating polymer composites with high thermal conductivity for thermal management applications in modern electronic devices.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Thermal properties of materials · Graphene research and applications · Heat Transfer and Optimization

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China

Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences, Ningbo, 315201, P. R. China

Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China

Shenzhen Institute of Advanced Electronic Materials, Shenzhen, 518103, P. R. China

Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China

National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China

School of Materials Science and Engineering, Central South University, Changsha, 410083, P. R. China

State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082, P. R. China

School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States

Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8656, Japan

Funding

Natural Science Foundation of Ningbo · K. C. Wong Education Foundation · China Postdoctoral Science Foundation · Chinese Academy of Sciences · Foundation of State Key Laboratory of Solid lubrication · National Key R&D Program of China · Shenzhen Basic Research project · 3315 Program of Ningbo · CAS Youth Innovation Promotion Association · Science and Technology Major Project of Ningbo · National Key Laboratory of Science and Technology on Advanced Composites in Special Environments

References (63)

Show source-provided references
1. 10.1016/j.mattod.2014.04.00310.1016/j.mattod.2014.04.003 ↗
2. 10.1002/adma.20170554410.1002/adma.201705544 ↗
3. 10.1021/nn500134m10.1021/nn500134m ↗
4. 10.1021/acsami.9b1081010.1021/acsami.9b10810 ↗
5. 10.1002/smll.20150217310.1002/smll.201502173 ↗
6. 10.1016/j.mser.2018.06.00210.1016/j.mser.2018.06.002 ↗
7. 10.1021/acsami.7b1011510.1021/acsami.7b10115 ↗
8. 10.1021/jp302654510.1021/jp3026545 ↗
9. 10.1038/srep0477910.1038/srep04779 ↗
10. 10.1016/j.compscitech.2017.06.00810.1016/j.compscitech.2017.06.008 ↗
11. 10.1016/j.compscitech.2018.03.02810.1016/j.compscitech.2018.03.028 ↗
12. 10.1016/j.compscitech.2020.10802110.1016/j.compscitech.2020.108021 ↗
13. 10.1038/nmat275310.1038/nmat2753 ↗
14. 10.1103/PhysRevB.87.11542110.1103/PhysRevB.87.115421 ↗
15. 10.1039/C3CS60217F10.1039/C3CS60217F ↗
16. 10.1088/2053-1583/aa636e10.1088/2053-1583/aa636e ↗
17. 10.1088/0957-4484/21/24/24570110.1088/0957-4484/21/24/245701 ↗
18. 10.1126/sciadv.aav012910.1126/sciadv.aav0129 ↗
19. 10.1103/PhysRevLett.125.08590210.1103/PhysRevLett.125.085902 ↗
20. 10.1021/nn301675f10.1021/nn301675f ↗
21. 10.1039/C5NR00228A10.1039/C5NR00228A ↗
22. 10.1021/acsami.6b0840410.1021/acsami.6b08404 ↗
23. 10.1039/C8TA03642J10.1039/C8TA03642J ↗
24. 10.1021/acs.nanolett.6b0072210.1021/acs.nanolett.6b00722 ↗
25. 10.1021/nn100649510.1021/nn1006495 ↗
26. 10.1021/ct200880m10.1021/ct200880m ↗
27. 10.1021/acs.nanolett.7b0420110.1021/acs.nanolett.7b04201 ↗
28. 10.1039/c2ce26446c10.1039/c2ce26446c ↗
29. 10.1039/C4NR01816H10.1039/C4NR01816H ↗
30. 10.1002/adma.20120403110.1002/adma.201204031 ↗
31. 10.1002/adma.20090032310.1002/adma.200900323 ↗
32. 10.1002/anie.20110536410.1002/anie.201105364 ↗
33. 10.1021/jp110985w10.1021/jp110985w ↗
34. 10.1021/nl504397h10.1021/nl504397h ↗
35. 10.1038/ncomms984910.1038/ncomms9849 ↗
36. 10.1039/c1jm11192b10.1039/c1jm11192b ↗
37. 10.1039/c2jm30587a10.1039/c2jm30587a ↗
38. 10.1002/adma.20180481010.1002/adma.201804810 ↗
39. 10.1016/j.ceramint.2011.10.06410.1016/j.ceramint.2011.10.064 ↗
40. 10.1021/acsnano.6b0773510.1021/acsnano.6b07735 ↗
41. 10.1126/science.119497510.1126/science.1194975 ↗
42. 10.1039/C4CC07324J10.1039/C4CC07324J ↗
43. 10.1002/adfm.20170145010.1002/adfm.201701450 ↗
44. 10.1021/nn500059s10.1021/nn500059s ↗
45. 10.1002/anie.20160551510.1002/anie.201605515 ↗
46. 10.1039/C6NR09312D10.1039/C6NR09312D ↗
47. 10.1016/j.cej.2017.09.15110.1016/j.cej.2017.09.151 ↗
48. 10.1021/nl102370710.1021/nl1023707 ↗
49. 10.1039/C7TC01692A10.1039/C7TC01692A ↗
50. 10.1103/PhysRevB.86.07540310.1103/PhysRevB.86.075403 ↗
51. 10.1021/nl802503q10.1021/nl802503q ↗
52. 10.1016/j.ssc.2011.01.00210.1016/j.ssc.2011.01.002 ↗
53. 10.1021/acsnano.9b0516310.1021/acsnano.9b05163 ↗
54. 10.1016/j.cej.2019.12192110.1016/j.cej.2019.121921 ↗
55. 10.1021/acsnano.8b0629010.1021/acsnano.8b06290 ↗
56. 10.1016/j.compositesa.2019.10549810.1016/j.compositesa.2019.105498 ↗
57. 10.1021/acsami.7b0821410.1021/acsami.7b08214 ↗
58. 10.1002/adma.20190693910.1002/adma.201906939 ↗
59. 10.1038/s41598-018-19945-310.1038/s41598-018-19945-3 ↗
60. 10.1103/PhysRevB.71.10420110.1103/PhysRevB.71.104201 ↗
61. 10.1039/C9TC02845E10.1039/C9TC02845E ↗
62. 10.1021/acsami.6b0463610.1021/acsami.6b04636 ↗
63. 10.1016/j.progpolymsci.2016.03.00110.1016/j.progpolymsci.2016.03.001 ↗