Extremely Low Density and Super-Compressible Graphene Cellular Materials

Ling Qiu, Bing Huang, Zijun He, Yuanyuan Wang, Zhiming Tian, Jefferson Zhe Liu, Kun Wang, Jingchao Song, Thomas R. Gengenbach, Dan Li

Research output: Contribution to journalArticleResearchpeer-review

59 Citations (Scopus)

Abstract

Development of extremely low density graphene elastomer (GE) holds the potential to enable new properties that traditional cellular materials cannot offer, which are promising for a range of emerging applications, ranging from flexible electronics to multifunctional scaffolds. However, existing graphene foams with extremely low density are generally found to have very poor mechanical resilience. It is scientifically intriguing but remains unresolved whether and how the density limit of this class of cellular materials can be further pushed down while their mechanical resilience is being retained. In this work, a simple annealing strategy is developed to investigate the role of intersheet interactions in the formation of extreme-low-density of graphene-based cellular materials. It is discovered that the density limit of mechanically resilient cellular GEs can be further pushed down as low as 0.16 mg cm−3 through thermal annealing. The resultant extremely low density GEs reveal a range of unprecedented properties, including complete recovery from 98% compression in both of liquid and air, ultrahigh solvent adsorption capacity, ultrahigh pressure sensitivity, and light transmittance.

Original languageEnglish
Article number1701553
Number of pages6
JournalAdvanced Materials
Volume29
Issue number36
DOIs
Publication statusPublished - 27 Sep 2017

Keywords

  • aerogels
  • elastomers
  • extremely low density
  • graphene
  • super-compressible

Cite this