Journal
ELECTROCHIMICA ACTA
Volume 296, Issue -, Pages 8-17Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.11.002
Keywords
Supercapacitors; Three-dimensional material; Graphene; Activated carbon; Tween-20
Categories
Funding
- National Natural Science Foundation of China [21606052]
- Guangdong Natural Science Foundation [2017A030313049]
- Guangdong Science and Technology Planning Project-Maoming Petrochemical Industry Transformation and Upgrading Technology Innovation Public Service Platform [2016B020211002]
- Guangxi Science & Technology Base and Talent Subject [GUIKE-AD17195084, GUIKE-AD18126001]
- Excellent Young Teacher Training Project of Guangdong Province Education Department [YQ2015115]
- Guangdong Featured innovation (education scientific research) project (2016)
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Newly three-dimensional (3-D) graphene-like carbon nanosheet network is synthesized by a simple and efficient buried-protection KOH activation technology with a surfactant (Tween-20) as carbon source (molecular precursor). The as-synthesized material possesses favorable three-dimensional network structure and hierarchical porous structure (with a specific surface area of 2017.3 m(2) g(-1)). As a promising supercapacitor electrode, a relatively high specific capacitance of 316.8 F g(-1) at a current density of 1 A g(-1) in 1 mol L-1 KOH aqueous solution, along with good cycling stability (with a 92.5% retention rate after 2000 cycles) are demonstrated for the as-prepared electrode. The 3-D graphene-like carbon nanosheet network material exhibits ideal capacitive behavior indicating a promising electrode material for high-performance supercapacitors. (C) 2018 Elsevier Ltd. All rights reserved.
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