• 文献标题:   Sodium-Ion Intercalated Transparent Conductors with Printed Reduced Graphene Oxide Networks
  • 文献类型:   Article
  • 作  者:   WAN JY, GU F, BAO WZ, DAI JQ, SHEN F, LUO W, HAN XG, URBAN D, HU LB
  • 作者关键词:   sodium ion, intercalation, printed rgo network, transparent conductor, twodimensional material
  • 出版物名称:   NANO LETTERS
  • ISSN:   1530-6984 EI 1530-6992
  • 通讯作者地址:   Univ Maryland
  • 被引频次:   22
  • DOI:   10.1021/acs.nanolett.5b00300
  • 出版年:   2015

▎ 摘  要

In this work, we report for the first time that Na-ion intercalation of reduced graphene oxide (RGO) can significantly improve its printed network's performance as a transparent conductor. Unlike pristine graphene that inhibits Na-ion intercalation, the larger layer-layer distance of RGO allows Na-ion intercalation, leading to simultaneously much higher DC conductivity and higher optical transmittance. The typical increase of transmittance from 36% to 79% and decrease of sheet resistance from 83k to 311 Ohms/sq in the printed network was observed after Na-ion intercalation. Compared with Li-intercalated graphene, Na-ion intercalated RGO shows much better environmental stability, which is likely due to the self-terminating oxidation of Na ions on the RGO edges. This study demonstrated the great potential of metal-ion intercalation to improve the performance of printed RGO network for transparent conductor applications.