Nature Communications (Nov 2018)

Silicon as a ubiquitous contaminant in graphene derivatives with significant impact on device performance

  • Rouhollah Jalili,
  • Dorna Esrafilzadeh,
  • Seyed Hamed Aboutalebi,
  • Ylias M. Sabri,
  • Ahmad E. Kandjani,
  • Suresh K. Bhargava,
  • Enrico Della Gaspera,
  • Thomas R. Gengenbach,
  • Ashley Walker,
  • Yunfeng Chao,
  • Caiyun Wang,
  • Hossein Alimadadi,
  • David R. G. Mitchell,
  • David L. Officer,
  • Douglas R. MacFarlane,
  • Gordon G. Wallace

DOI
https://doi.org/10.1038/s41467-018-07396-3
Journal volume & issue
Vol. 9, no. 1
pp. 1 – 13

Abstract

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Silicon-based contaminants are ubiquitous in natural graphite, and they are thus expected to be present in exfoliated graphene. Here, the authors show that such impurities play a non-negligible role in graphene-based devices, and use high-purity parent graphite to boost the performance of graphene sensors and supercapacitor microelectrodes.