Topological Design of Ultrastrong and Highly Conductive Graphene Films

Yeye Wen; Mingmao Wu; Miao Zhang; Chun Li; Gaoquan Shi

doi:10.1002/adma.201702831

Topological Design of Ultrastrong and Highly Conductive Graphene Films

Yeye Wen, Mingmao Wu, Miao Zhang, Chun Li^*, Gaoquan Shi

^*Corresponding author for this work

Ministry of Education in China

Research output: Contribution to journal › Article › peer-review

121 Citations (Scopus)

Abstract

Nacre-like graphene films are prepared by evaporation-induced assembly of graphene oxide dispersions containing small amounts of cellulose nanocrystal (CNC), followed by chemical reduction with hydroiodic acid. CNC induces the formation of wrinkles on graphene sheets, greatly enhancing the mechanical properties of the resultant graphene films. The graphene films deliver an ultrahigh tensile strength of 765 ± 43 MPa (up to 800 MPa in some cases), a large failure strain of 6.22 ± 0.19%, and a superior toughness of 15.64 ± 2.20 MJ m⁻³, as well as a high electrical conductivity of 1105 ± 17 S cm⁻¹. They have a great potential for applications in flexible electronics because of their combined excellent mechanical and electrical properties.

Original language	English
Article number	1702831
Journal	Advanced Materials
Volume	29
Issue number	41
DOIs	https://doi.org/10.1002/adma.201702831
Publication status	Published - 6 Nov 2017
Externally published	Yes

Keywords

graphene
high conductivity
mechanical properties
nacre-like
topology

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abstract = "Nacre-like graphene films are prepared by evaporation-induced assembly of graphene oxide dispersions containing small amounts of cellulose nanocrystal (CNC), followed by chemical reduction with hydroiodic acid. CNC induces the formation of wrinkles on graphene sheets, greatly enhancing the mechanical properties of the resultant graphene films. The graphene films deliver an ultrahigh tensile strength of 765 ± 43 MPa (up to 800 MPa in some cases), a large failure strain of 6.22 ± 0.19%, and a superior toughness of 15.64 ± 2.20 MJ m−3, as well as a high electrical conductivity of 1105 ± 17 S cm−1. They have a great potential for applications in flexible electronics because of their combined excellent mechanical and electrical properties.",

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AB - Nacre-like graphene films are prepared by evaporation-induced assembly of graphene oxide dispersions containing small amounts of cellulose nanocrystal (CNC), followed by chemical reduction with hydroiodic acid. CNC induces the formation of wrinkles on graphene sheets, greatly enhancing the mechanical properties of the resultant graphene films. The graphene films deliver an ultrahigh tensile strength of 765 ± 43 MPa (up to 800 MPa in some cases), a large failure strain of 6.22 ± 0.19%, and a superior toughness of 15.64 ± 2.20 MJ m−3, as well as a high electrical conductivity of 1105 ± 17 S cm−1. They have a great potential for applications in flexible electronics because of their combined excellent mechanical and electrical properties.

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Topological Design of Ultrastrong and Highly Conductive Graphene Films

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Keywords

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