High density mechanical energy storage with carbon nanothread bundle

Zhan, Haifei and Zhang, Gang and Bell, John M. and Tan, Vincent B. C. and Gu, Yuantong (2020) High density mechanical energy storage with carbon nanothread bundle. Nature Communications, 11 (1):1905.

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The excellent mechanical properties of carbon nanofibers bring promise for energy-related applications. Through in silico studies and continuum elasticity theory, here we show that the ultra-thin carbon nanothreads-based bundles exhibit a high mechanical energy storage density. Specifically, the gravimetric energy density is found to decrease with the number of filaments, with torsion and tension as the two dominant contributors. Due to the coupled stresses, the nanothread bundle experiences fracture before reaching the elastic limit of any individual deformation mode. Our results show that nanothread bundles have similar mechanical energy storage capacity compared to (10,10) carbon nanotube bundles, but possess their own advantages. For instance, the structure of the nanothread allows us to realize the full mechanical energy storage potential of its bundle structure through pure tension, with a gravimetric energy density of up to 1.76 MJ kg−1, which makes them appealing alternative building blocks for energy storage devices.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - USQ Other
Faculty/School / Institute/Centre: Current - USQ Other
Date Deposited: 14 Sep 2020 04:27
Last Modified: 12 Oct 2020 01:54
Uncontrolled Keywords: nanotube fibres; nanofibers; elastic properties; dynamics; temperature; actuation; strength; defect; yarns; twist
Fields of Research (2008): 09 Engineering > 0910 Manufacturing Engineering > 091012 Textile Technology
10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
Fields of Research (2020): 40 ENGINEERING > 4014 Manufacturing engineering > 401413 Textile technology
40 ENGINEERING > 4018 Nanotechnology > 401807 Nanomaterials
Identification Number or DOI: https://doi.org/10.1038/s41467-020-15807-7
URI: http://eprints.usq.edu.au/id/eprint/39394

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