Chongmin Lee1,2, Hankwon Chang1,2, Hee Dong Jang This email address is being protected from spambots. You need JavaScript enabled to view it.1,2

 

Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources, Yuseong-gu, Daejeon 34132, Korea
Department of Nanomaterials Science and Engineering, University of Science and Technology, Yuseong-gu, Daejeon 34113, Korea


 

Received: October 17, 2018
Revised: October 17, 2018
Accepted: November 19, 2018

Download Citation: ||https://doi.org/10.4209/aaqr.2018.10.0372  

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Cite this article:

Lee, C., Chang, H. and Jang, H.D. (2019). Preparation of CoFe2O4-Graphene Composites Using Aerosol Spray Pyrolysis for Supercapacitors Application. Aerosol Air Qual. Res. 19: 443-448. https://doi.org/10.4209/aaqr.2018.10.0372


HIGHLIGHTS

  • The CoFe2O4-graphene composites were synthesized by aerosol spray pyrolysis.
  • The composites showed crumpled paper ball like morphology.
  • The composites showed enhanced specific capacitance and rate capability.
 

ABSTRACT


Cobalt-iron oxides have attracted much attention as electrode materials for supercapacitors. Graphene loaded with cobalt ferrite (CoFe2O4) nanoparticles can exhibit enhanced specific capacitance. Here, we present three-dimensional (3D) crumpled graphene (CGR) loaded with CoFe2O4 nanoparticles. The CoFe2O4-graphene composites were synthesized from a colloidal mixture of GO, FeCl3⋅6H2O, and CoCl2⋅6H2O by one step aerosol spray pyrolysis. The CoFe2O4-GR composites displayed a morphology resembling a crumpled paper ball, and the size of the CoFe2O4 and CGR in the composites was around 5 nm and 500 nm, respectively. The highest specific capacitance of the CoFe2O4-graphene composites was 253 F g–1.


Keywords: Aerosol spray pyrolysis; CoFe2O4; Nanoparticles; Graphene; Supercapacitors.



Aerosol Air Qual. Res. 19 :443 -448 . https://doi.org/10.4209/aaqr.2018.10.0372  


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