Cross-Linking Stabilizes Electrical Resistance of Reduced Graphene Oxide in Humid Environments

Yiqian Jin, Woo Lee

Research output: Contribution to journalArticle

Abstract

Reduced graphene oxide (rGO) is an excellent candidate for many sensor applications, since its electrical properties can be tailored to become sensitive to temperature, humidity, strain, and chemicals. However, the wide use of rGO may be limited by its susceptibility to humidity changes. Here, for the first time, we report experimental evidence that (i) the interlayer spacing between rGO sheets can swell upon exposure to humid environments due to the intercalation of water and (ii) the expanded interlayer spacing increases electrical resistance. As a novel means of mitigating this instability, ethylenediamine was used as a covalent cross-linker to anchor rGO sheets to limit interlayer expansion and stabilize electrical resistance under humid environments.

Original languageEnglish (US)
JournalLangmuir
DOIs
StatePublished - Jan 1 2019

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Graphite
Electric Impedance
Oxides
ethylenediamine
Humidity
Temperature
Water

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Materials Science(all)
  • Spectroscopy
  • Surfaces and Interfaces
  • Electrochemistry

Cite this

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Cross-Linking Stabilizes Electrical Resistance of Reduced Graphene Oxide in Humid Environments. / Jin, Yiqian; Lee, Woo.

In: Langmuir, 01.01.2019.

Research output: Contribution to journalArticle

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