• 文献标题:   Shock Exfoliation of Graphene Fluoride in Microwave
  • 文献类型:   Article
  • 作  者:   WU SC, MO JX, ZENG YC, WANG Y, RAWAL A, SCOTT J, SU Z, REN WH, CHEN S, WANG KX, CHEN W, ZHANG YZ, ZHAO C, CHEN XJ
  • 作者关键词:   energy application, exfoliation, graphene, graphene fluoride, microwave
  • 出版物名称:   SMALL
  • ISSN:   1613-6810 EI 1613-6829
  • 通讯作者地址:   Univ New South Wales
  • 被引频次:   5
  • DOI:   10.1002/smll.201903397 EA SEP 2019
  • 出版年:   2020

▎ 摘  要

An unprecedented microwave-based strategy is developed to facilitate solid-phase, instantaneous delamination and decomposition of graphite fluoride (GF) into few-layer, partially fluorinated graphene. The shock reaction occurs (and completes in few seconds) under microwave irradiation upon exposing GF to either "microwave-induced plasma" generated in vacuum or "catalyst effect" caused by intense sparking of graphite at ambient conditions. A detailed analysis of the structural and compositional transformations in these processes indicates that the GF experiences considerable exfoliation and defluorination, during which sp(2)-bonded carbon is partially recovered despite significant structural defects being introduced. The exfoliated fluorinated graphene shows excellent electrochemical performance as anode materials in potassium ion batteries and as catalysts for the conversion of O-2 to H2O2. This simple and scalable method requires minimal energy input and does not involve the use of other chemicals, which is attractive for extensive research in fluorine-containing graphene and its derivatives in laboratories and industrial applications.