Abstract:
:Graphene has an extremely high in-plane strength yet considerable out-of-plane softness. High crystalline order of graphene assemblies is desired to utilize their in-plane properties, however, challenged by the easy formation of chaotic wrinkles for the intrinsic softness. Here, we find an intercalation modulated plasticization phenomenon, present a continuous plasticization stretching method to regulate spontaneous wrinkles of graphene sheets into crystalline orders, and fabricate continuous graphene papers with a high Hermans' order of 0.93. The crystalline graphene paper exhibits superior mechanical (tensile strength of 1.1 GPa, stiffness of 62.8 GPa) and conductive properties (electrical conductivity of 1.1 × 105 S m-1, thermal conductivity of 109.11 W m-1 K-1). We extend the ultrastrong graphene papers to the realistic laminated composites and achieve high strength combining with attractive conductive and electromagnetic shielding performance. The intercalation modulated plasticity is revealed as a vital state of graphene assemblies, contributing to their industrial processing as metals and plastics.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Li P,Yang M,Liu Y,Qin H,Liu J,Xu Z,Liu Y,Meng F,Lin J,Wang F,Gao Cdoi
10.1038/s41467-020-16494-0subject
Has Abstractpub_date
2020-05-27 00:00:00pages
2645issue
1issn
2041-1723pii
10.1038/s41467-020-16494-0journal_volume
11pub_type
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