High density mechanical energy storage with carbon nanothread bundle
Article
Article Title | High density mechanical energy storage with carbon nanothread bundle |
---|---|
ERA Journal ID | 122966 |
Article Category | Article |
Authors | Zhan, Haifei (Author), Zhang, Gang (Author), Bell, John M. (Author), Tan, Vincent B. C. (Author) and Gu, Yuantong (Author) |
Journal Title | Nature Communications |
Journal Citation | 11 (1) |
Article Number | 1905 |
Number of Pages | 11 |
Year | 2020 |
Publisher | Nature Publishing Group |
Place of Publication | United Kingdom |
ISSN | 2041-1723 |
Digital Object Identifier (DOI) | https://doi.org/10.1038/s41467-020-15807-7 |
Abstract | 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. |
Keywords | nanotube fibres; nanofibers; elastic properties; dynamics; temperature; actuation; strength; defect; yarns; twist |
ANZSRC Field of Research 2020 | 401413. Textile technology |
401807. Nanomaterials | |
Byline Affiliations | Queensland University of Technology |
Institute of High Performance Computing, Singapore | |
Deputy Vice-Chancellor's Office (Research and Innovation) | |
National University of Singapore | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5x4x/high-density-mechanical-energy-storage-with-carbon-nanothread-bundle
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