Wang, Jieming and Liu, Dan and Li, Quanxiang and Chen, Cheng and Chen, Zhiqiang and Naebe, Minoo and Song, Pingan 
ORCID: https://orcid.org/0000-0003-1082-652X and Portehault, David and Garvey, Christopher J. and Golberg, Dmitri and Lei, Weiwei
(2021)
Nacre-bionic nanocomposite membrane for efficient in-plane
dissipation heat harvest under high temperature.
Journal of Materiomics, 7 (2).
pp. 219-225.
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Text (Published Version)
Nacre-bionic nanocomposite membrane for efficient in-plane dissipation heat harvest under high temperature.pdf Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (2MB) | Preview |
Abstract
Waste heat management holds great promise to create a sustainable and energy-efficient society as well as contributes to the alleviation of global warming. Harvesting and converting this waste heat in order to improve the efficiency is a major challenge. Here we report biomimetic nacre-like hydroxyl-functionalized boron nitride (BN)-polyimide (PI) nanocomposite membranes as efficient 2D in-plane heat conductor to dissipate and convert waste heat at high temperature. The hierarchically layered nanostructured membrane with oriented BN nanosheets gives rise to a very large anisotropy in heat transport properties, with a high in-plane thermal conductivity (TC) of 51 W m−1 K−1 at a temperature of ∼300 °C, 7314% higher than that of the pure polymer. The membrane also exhibits superior thermal stability and fire resistance, enabling its workability in a hot environment. In addition to cooling conventional exothermic electronics, the large TC enables the membrane as a thin and 2D anisotropic heat sink to generate a large temperature gradient in a thermoelectric module (ΔT = 23 °C) through effective heat diffusion on the cold side under 220 °C heating. The waste heat under high temperature is therefore efficiently harvested and converted to power electronics, thus saving more thermal energy by largely decreasing consumption.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| 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: | 15 Nov 2021 23:35 |
| Last Modified: | 24 Nov 2021 00:35 |
| Uncontrolled Keywords: | boron nitride nanosheets; nanocomposite membrane; nacre-biomimetic; high temperature heat spreader; in-plane dissipation heat |
| Fields of Research (2008): | 03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030301 Chemical Characterisation of Materials 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid 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 (2020): | 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering 17 ENERGY > 1708 Renewable energy > 170899 Renewable energy not elsewhere classified |
| Funding Details: | |
| Identification Number or DOI: | https://doi.org/10.1016/j.jmat.2020.08.006 |
| URI: | http://eprints.usq.edu.au/id/eprint/44038 |
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