• 文献标题:   Synthesis of reduced graphene oxide paper for EMI shielding by a multi-step process
  • 文献类型:   Article
  • 作  者:   LIN YY, HOU GL, BI S, SU XJ, LI H
  • 作者关键词:   rgo paper, emi shielding, multistep reduction
  • 出版物名称:   FUNCTIONAL MATERIALS LETTERS
  • ISSN:   1793-6047 EI 1793-7213
  • 通讯作者地址:   Xian Res Inst High Tech
  • 被引频次:   0
  • DOI:   10.1142/S1793604720510248
  • 出版年:   2020

▎ 摘  要

A multi-step reduction process was developed to produce reduced graphene oxide (rGO) paper for electromagnetic interference (EMI) shielding. First step reduction was achieved by hydroiodic acid to remove most of the oxygen-containing functional groups, and sodium borohydride was used in the second step reduction to reduce carbonyl group which is the most difficult functional group to remove. In the last step reduction, hydroiodic acid was used as reducing agent again to remove the remaining oxygencontaining functional groups. The results show that this method can greatly improve the conductivity and EMI shielding performance of rGO paper. The resulting rGO paper with a C/O ratio of 19.38 and a thickness of 9.1 itm exhibited high conductivity of 1084 S/cm and excellent average EMI shielding efficiency of 45.84 dB in the X-band, better than that reduction by other chemical methods.