Scalable exfoliation and activation of graphite into porous graphene using microwaves for high-performance supercapacitors

Cited 4 time in webofscience Cited 0 time in scopus
  • Hit : 135
  • Download : 0
Activated few-layered graphene (a-FLG) materials with porous structures are prepared using a KOH-assisted microwave irradiation technique from natural graphite. The employment of KOH as a chemical etchant efficiently activates the surface pore structure of graphene during the exfoliation of graphite exposed to microwave irradiation. The resultant a-FLG materials exhibit favorable and tailorable large surface areas and porous structures for the deposition of electrochemically active MnO2. When measuring electrochemical characteristics, MnO2/a-FLG exhibits a high specific capacitance (265 F/g), high rate capability, and excellent long-term stability. Moreover, asymmetric supercapacitor devices fabricated using a-FLG as a negative electrode and MnO2/a-FLG as a positive electrode show high energy (40.8 Wh/kg) and power (16.3 kW/kg) densities with high capacitance retention (96% over 10000 cycles). (C) 2018 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2019-01
Language
English
Article Type
Article
Citation

JOURNAL OF ALLOYS AND COMPOUNDS, v.770, pp.458 - 465

ISSN
0925-8388
DOI
10.1016/j.jallcom.2018.08.042
URI
http://hdl.handle.net/10203/247112
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 4 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0