Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 536, Issue -, Pages 235-244Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.10.060
Keywords
Fe3O4; Graphene; Asymmetric; Supercapacitor; Energy density
Categories
Funding
- National Natural Science Foundation of China [21571040]
- Young Top-notch Talent for Ten Thousand Talent Program
- Natural Science Foundation of Heilongjiang Province [QC2017007]
- Fundamental Research Funds for the Central Universities
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Unique nanostructure, high electrical conductivity, satisfactory energy density, and extraordinary cycling stability are important evaluation criteria for high-efficient energy storage devices. Herein, Fe3O4 nano-spheres are successfully in situ decorated on graphene nanosheets through an environmentally benign and facile solvothermal procedure. When utilized as an electrode for supercapacitor, the graphene/Fe3O4 nanocomposite exhibits a notably enhanced specific capacity (268 F.g(-1) at 2 mV.s(-1)) and remarkable cycling performance with 98.9% capacity retention after 10,000 cycles. Furthermore, the fabricated graphene/MnO2//graphene/Fe3O4 asymmetric supercapacitor device displays a desirable energy density (87.6 Wh.kg(-1)) and superior cycling stability (93.1% capacity retention after 10,000 cycles). (C) 2018 Elsevier Inc. All rights reserved.
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