Issue 8, 2019

Unveiling the thickness-dependent mechanical properties of graphene papers by in situ SEM tension

Abstract

With more and more applications, the mechanical strength of graphene paper (GP) has attracted significant attention in recent years. In this report, GPs were prepared by flow-induced filtration of electrochemical exfoliated graphene sheets. By adjusting the concentration of solution, we found graphene sheets fabricated in 0.1 M K2SO4 have the thinnest average thickness. And by uniaxial in-plane tensile tests operated on a self-developed in situ scanning electron microscopy (SEM) tensile stage, the corresponding GP has the best fracture strength of 192 MPa. This is due to that the thickness decrease of exfoliated graphene will increase the quantity of interlayer crosslinks, thus improving the mechanical properties of GPs. This research may open a new way to obtain high-strength GPs for applications.

Graphical abstract: Unveiling the thickness-dependent mechanical properties of graphene papers by in situ SEM tension

Supplementary files

Article information

Article type
Paper
Submitted
29 nov. 2018
Accepted
30 janv. 2019
First published
06 févr. 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 4609-4615

Unveiling the thickness-dependent mechanical properties of graphene papers by in situ SEM tension

T. Cao, X. Liu, X. Cheng, Y. Li, L. Sang, J. Ma, J. Wang, J. He, M. Wang and Y. Zhang, RSC Adv., 2019, 9, 4609 DOI: 10.1039/C8RA09818B

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