articleNature CommunicationsJan 20, 2015GOLD OA

Three-dimensionally bonded spongy graphene material with super compressive elasticity and near-zero Poisson’s ratio

YWYingpeng WuNYNingbo YiLHLu HuangTZTengfei ZhangSFShaoli Fang

Collaborative Innovation Center of Chemical Science and Engineering Tianjin · Nankai University · +6 more institutions

PubMed
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Abstract

It is a challenge to fabricate graphene bulk materials with properties arising from the nature of individual graphene sheets, and which assemble into monolithic three-dimensional structures. Here we report the scalable self-assembly of randomly oriented graphene sheets into additive-free, essentially homogenous graphene sponge materials that provide a combination of both cork-like and rubber-like properties. These graphene sponges, with densities similar to air, display Poisson’s ratios in all directions that are near-zero and largely strain-independent during reversible compression to giant strains. And at the same time, they function as enthalpic rubbers, which can recover up to 98% compression in air and…

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Topics & keywords

Topics
Keywords
  • Graphene
  • Materials science
  • Poisson's ratio
  • Elasticity (physics)
  • Compression (physics)
  • Natural rubber
  • Poisson distribution
  • Composite material
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