Sulfur-doped graphene laminates for EMI shielding applications

Faisal Shahzad, Pradip Kumar, Seunggun Yu, Seunghwan Lee, Yoon Hyun Kim, Soon Man Hong, Chong Min Koo

Research output: Contribution to journalArticlepeer-review

71 Citations (Scopus)

Abstract

Herein, for the first time, we demonstrate that a laminated structure of sulfur-doped reduced graphene oxide (SrGO) provides significant potential for electromagnetic interference shielding applications. In this study, SrGO was prepared through the reaction between graphene oxide and hydrogen disulfide (H2S) gas at elevated temperatures. The doping degree of S was controlled through varying the time and temperature of the reaction and the maximum doping content of 5.6 wt% was achieved. Because of the n-type doping contribution of the S atom to the doped graphene, SrGO laminate not only revealed a 47% larger electrical conductivity (75 S cm-1) than undoped reduced graphene oxide laminate (51 S cm-1) but also revealed 119% larger EMI shielding effectiveness (33.2 dB) than the undoped one (15.5 dB) at the same sample thickness.

Original languageEnglish
Pages (from-to)9802-9810
Number of pages9
JournalJournal of Materials Chemistry C
Volume3
Issue number38
DOIs
Publication statusPublished - 2015 Aug 11
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Sulfur-doped graphene laminates for EMI shielding applications'. Together they form a unique fingerprint.

Cite this