Lightweight, Superelastic Yet Thermoconductive Boron Nitride Nanocomposite Aerogel for Thermal Energy Regulation

Wang, Jieming and Liu, Dan and Li, Quanxiang and Chen, Cheng and Chen, Zhiqiang and Song, Pingan ORCID: https://orcid.org/0000-0003-1082-652X and Hao, Jian and Li, Yingwei and Fakhrhoseini, Sobhan and Naebe, Minoo and Wang, Xungai and Lei, Weiwei (2019) Lightweight, Superelastic Yet Thermoconductive Boron Nitride Nanocomposite Aerogel for Thermal Energy Regulation. ACS Nano, 13 (7). pp. 7860-7870. ISSN 1936-0851


Abstract

Conventional three-dimensional (3D) thermal conductors or heat sinks are normally bulky solids with high density, which is cumbersome and not portable to satisfy current demands for soft and flexible electronic devices. To address this issue, here, a lightweight, superelastic yet thermally conductive boron nitride (BN) nanocomposite aerogel is designed by a facile freeze-drying method. The attained aerogel constituting of tailored interconnected binary inorganic–organic network structure exhibits low bulk density (6.5 mg cm–3) and outstanding mechanical performances for compression, clotting, and stretching. Meanwhile, the aerogel has promising thermal stability and high thermal conductivity over wide temperature ranges (30–300 °C), validating the application even in extremely hot environments. Moreover, the aerogel can serve as a lightweight and elastic heat conductor for the enhancement of thermal energy harvest. Interestingly, during alternate strain loading/unloading under heating, the superelasticity and the anisotropy of thermal conductive transduction make the aerogel enable the elastic thermal energy capture and dynamic regulation. Therefore, our findings provide a potential use for the thermally conductive aerogel in future green energy applications.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 22 Jan 2021 05:17
Last Modified: 31 Jan 2021 23:30
Uncontrolled Keywords: functional BN nanosheets; aerogel; high temperature thermal conductive; thermal management; dissipated heat regulation
Fields of Research (2008): 02 Physical Sciences > 0299 Other Physical Sciences > 029999 Physical Sciences not elsewhere classified
09 Engineering > 0912 Materials Engineering > 091205 Functional Materials
Fields of Research (2020): 40 ENGINEERING > 4016 Materials engineering > 401605 Functional materials
40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Socio-Economic Objectives (2020): 24 MANUFACTURING > 2406 Environmentally sustainable manufacturing activities > 240699 Environmentally sustainable manufacturing activities not elsewhere classified
28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering
Funding Details:
Identification Number or DOI: https://doi.org/10.1021/acsnano.9b02182
URI: http://eprints.usq.edu.au/id/eprint/40569

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