Manganese hexacyanoferrate derived Mn3O4 nanocubes–reduced graphene oxide nanocomposites and their charge storage characteristics in supercapacitors
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Manganese hexacyanoferrate derived Mn3O4
nanocubes–reduced graphene oxide
nanocomposites and their charge storage
characteristics in supercapacitors
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| Creator |
Subramani, K.
Jeyakumar, D. Sathish, M. |
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| Subject |
Nanotechnology
Electrochemical Power Sources |
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| Description |
Mn3O4–reduced graphene oxide (RGO) nanocomposites were prepared by chemical decomposition of the
manganese hexacyanoferrate (MnHCF) complex directly on the graphene surface. XRD studies revealed the
formation of crystalline hausmannite Mn3O4 nanocubes in the as-prepared nanocomposites without any heat
treatment. The FE-SEM images showed the formation of Mn3O4 nanocubes on the graphene surface in the
as-prepared nanocomposites. HR-TEM studies confirmed the homogeneous dispersion of B25 nm Mn3O4
nanocubes on graphene nanosheets. The amount of Mn3O4 nanocubes and graphene in the nanocomposites
was estimated using TGA analysis from room temperature to 800 1C in air. The FT-IR and Raman spectroscopic
analysis confirmed the functional groups in the nanocomposites and defects in graphene nanosheets
in the nanocomposites. Cyclic voltammetry and galvanostatic charge–discharge experiments demonstrated a
high specific capacitance of 131 F g-1 in 1 M Na2SO4 electrolyte at a current density of 0.5 A g-1 for the
RGM-0.5 nanocomposite. A capacitance retention of 99% was observed for 500 charge–discharge cycles at
a current density of 5 A g-1, which conformed the excellent stability of the RGM electrodes. The prepared
Mn3O4–RGO nanocomposites are promising for electrochemical energy storage
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| Publisher |
Royal Society of Chemistry
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| Date |
2014
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3093/1/032-2014.pdf
Subramani, K. and Jeyakumar, D. and Sathish, M. (2014) Manganese hexacyanoferrate derived Mn3O4 nanocubes–reduced graphene oxide nanocomposites and their charge storage characteristics in supercapacitors. Physical Chemistry Chemical Physics, 16. pp. 4952-4961. ISSN 1463-9076 |
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| Relation |
http://www.rsc.org/pccp
http://cecri.csircentral.net/3093/ |
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