Issue 40, 2021

Single sheets of graphene for fabrication of fibers with enhanced mechanical properties

Abstract

This paper reports the fabrication and mechanical properties of macroscale graphene fibers (diameters of 10 to 100 μm with lengths upwards of 2 cm) prepared from a single sheet of single-layer graphene grown via chemical vapor deposition (CVD). The breaking strength of these graphene fibers increased with consecutive tensile test measurements on a single fiber, where fiber fragments produced from a prior test exhibited larger breaking strengths. Additionally, we observed an overall reduction of surface folds and wrinkles, and an increase in their alignment parallel to the tensile direction. We propose that a foundation of this property is the plastic deformations within the fiber that accumulate through sequential tensile testing. Through this cyclic method, our best fiber produced a strength of 2.67 GPa with a 1 mm gauge length.

Graphical abstract: Single sheets of graphene for fabrication of fibers with enhanced mechanical properties

Supplementary files

Article information

Article type
Paper
Submitted
15 Jul 2021
Accepted
15 Sep 2021
First published
20 Sep 2021

Phys. Chem. Chem. Phys., 2021,23, 23124-23129

Author version available

Single sheets of graphene for fabrication of fibers with enhanced mechanical properties

M. G. Salim, L. A. Thimons, M. A. Kim, B. Carr, M. Montgomery, N. Tolman, T. D. B. Jacobs and H. Liu, Phys. Chem. Chem. Phys., 2021, 23, 23124 DOI: 10.1039/D1CP03238K

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