Journal article
Flash Graphene Morphologies
ACS nano, Vol.14(10), pp.13691-13699
10/27/2020
DOI: 10.1021/acsnano.0c05900
PMID: 32909736
Abstract
Flash Joule heating (FJH) can convert almost any carbon-based precursor into bulk quantities of graphene. This work explores the morphologies and properties of flash graphene (FG) generated from carbon black. It is shown that FG is partially comprised of sheets of turbostratic FG (tFG) that have a rotational mismatch between neighboring layers. The remainder of the FG is wrinkled graphene sheets that resemble nongraphitizing carbon. To generate high quality tFG sheets, a FJH duration of 30-100 ms is employed. Beyond 100 ms, the turbostratic sheets have time to AB-stack and form bulk graphite. Atomistic simulations reveal that generic thermal annealing yields predominantly wrinkled graphene which displays minimal to no alignment of graphitic planes, as opposed to the high-quality tFG that might be formed under the direct influence of current conducted through the material. The tFG was easily exfoliated via shear, hence the FJH process has the potential for bulk production of tFG without the need for pre-exfoliation using chemicals or high energy mechanical shear.
Details
- Title: Subtitle
- Flash Graphene Morphologies
- Creators
- Michael G. Stanford - Rice UniversityKsenia V. Bets - Rice UniversityDuy X. Luong - Rice UniversityPaul A. Advincula - Rice UniversityWeiyin Chen - Rice UniversityJohn Tianci Li - Rice UniversityZhe Wang - University of Iowa, Chemical and Biochemical EngineeringEmily A. McHugh - Rice UniversityWala A. Algozeeb - Rice UniversityBoris I. Yakobson - Rice UniversityJames M. Tour - Rice University
- Resource Type
- Journal article
- Publication Details
- ACS nano, Vol.14(10), pp.13691-13699
- DOI
- 10.1021/acsnano.0c05900
- PMID
- 32909736
- NLM abbreviation
- ACS Nano
- ISSN
- 1936-0851
- eISSN
- 1936-086X
- Publisher
- Amer Chemical Soc
- Number of pages
- 9
- Grant note
- FA9550-19-1-0296; FA9550-17-1-0262 / Air Force Office of Scientific Research; United States Department of Defense; Air Force Office of Scientific Research (AFOSR) DE-FE0031794 / DOE-NETL; United States Department of Energy (DOE) CBET-1605848 / National Science Foundation; National Science Foundation (NSF)
- Language
- English
- Date published
- 10/27/2020
- Academic Unit
- Chemical and Biochemical Engineering
- Record Identifier
- 9984696146602771
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