4.7 Article

Nanoclay assisted electrochemical exfoliation of pencil core to high conductive graphene thin-film electrode

期刊

JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 487, 期 -, 页码 156-161

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2016.10.028

关键词

Graphene colloid; Electrochemical exfoliation; High conductive; Energy storage; Electrode materials; Pencil

资金

  1. National Natural Science Foundation of China [51125009, 91434118, 21601176]
  2. National Natural Science Foundation [21521092]
  3. External Cooperation Program of BIC, Chinese Academy of Sciences [121522KYS820150009]
  4. Hundred Talents Program of the Chinese Academy of Sciences
  5. Jilin Provincial Science and Technology Development Program of China [20160520002JH]

向作者/读者索取更多资源

Nanoclay assisted electrochemical exfoliation was developed to in-situ form functionalized graphene electrode materials from pencil core with different ratios of graphite and clay. This method made a positive transformation from solid graphite to graphene colloidal solution, which can be used to construct binder- and additive-free thin-film electrodes. Exfoliated graphene can be served as both conductive current collector (film resistance of 33 5)/square) and electrode materials. Graphene thin-film electrodes from pencil cores displayed higher capacity of 224 than 80 mA h/g of that from pure graphite. The electrochemical performance can be controlled by the ratio of graphite and clay and the oxidation reaction of surface oxygen functional groups. The described nanoclay-assisted electrochemical oxidation route shows great potential for the synthesis of functionalized graphene electrode materials for high conductive thin-film lithium ion batteries and supercapacitors. (C) 2016 Elsevier Inc. All rights reserved.

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