• 文献标题:   Synthesis of Graphene Films by Rapid Heating and Quenching at Ambient Pressures and Their Electrochemical Characterization
  • 文献类型:   Article
  • 作  者:   DAVID L, BHANDAVAT R, KULKARNI G, PAHWA S, ZHONG Z, SINGH G
  • 作者关键词:   cvd, graphene, rapid heating cooling lithiumion battery
  • 出版物名称:   ACS APPLIED MATERIALS INTERFACES
  • ISSN:   1944-8244 EI 1944-8252
  • 通讯作者地址:   Kansas State Univ
  • 被引频次:   16
  • DOI:   10.1021/am301782h
  • 出版年:   2013

▎ 摘  要

We study the process of graphene growth on Cu and Ni substrates subjected to rapid heating (approximately 8 degrees C/s) and cooling cycles (approximately 10 degrees C/s) in a modified atmospheric pressure chemical vapor deposition furnace. Electron microscopy followed by Raman spectroscopy demonstrated successful synthesis of large-area few-layer graphene (FLG) films on both Cu and Ni substrates. The overall synthesis time was less than 30 min. Further, the as-synthesized films were directly utilized as anode material and their electrochemical behavior was studied in a lithium half-cell configuration. FLG on Cu (Cu-G) showed reduced lithium-intercalation capacity when compared with SLG, BLG and Bare-Cu suggesting its substrate protective nature (barrier to Li-ions). Although graphene films on Ni (Ni-G) showed better Li-cycling ability similar to that of other carbons suggesting that the presence of graphene edge planes (typical of Ni-G) is important in effective uptake and release of Li-ions in these materials.