A facile and template-free hydrothermal synthesis of Mn 3O 4 nanorods on graphene sheets for supercapacitor electrodes with long cycle stability

Jeong Woo Lee; Anthony S. Hall; Jong Duk Kim; Thomas E. Mallouk

doi:10.1021/cm203697w

A facile and template-free hydrothermal synthesis of Mn ₃O ₄ nanorods on graphene sheets for supercapacitor electrodes with long cycle stability

Jeong Woo Lee, Anthony S. Hall, Jong Duk Kim, Thomas E. Mallouk

Research output: Contribution to journal › Article › peer-review

763 Scopus citations

Abstract

Graphene/Mn ₃O ₄ composites were prepared by a simple hydrothermal process from KMnO ₄ using ethylene glycol as a reducing agent. Mn ₃O ₄ nanorods of 100 nm to 1 μm length were observed to be well-dispersed on graphene sheets. To assess the properties of these materials for use in supercapacitors, cyclic voltammetry and galvanostatic charging-discharging measurements were performed. Graphene/Mn ₃O ₄ composites could be charged and discharged faster and had higher capacitance than free Mn ₃O ₄ nanorods. The capacitance of the composites was 100% retained after 10 000 cycles at a charging rate of 5 A/g.

Original language	English (US)
Pages (from-to)	1158-1164
Number of pages	7
Journal	Chemistry of Materials
Volume	24
Issue number	6
DOIs	https://doi.org/10.1021/cm203697w
State	Published - Mar 27 2012

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Materials Chemistry

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title = "A facile and template-free hydrothermal synthesis of Mn 3O 4 nanorods on graphene sheets for supercapacitor electrodes with long cycle stability",

abstract = "Graphene/Mn 3O 4 composites were prepared by a simple hydrothermal process from KMnO 4 using ethylene glycol as a reducing agent. Mn 3O 4 nanorods of 100 nm to 1 μm length were observed to be well-dispersed on graphene sheets. To assess the properties of these materials for use in supercapacitors, cyclic voltammetry and galvanostatic charging-discharging measurements were performed. Graphene/Mn 3O 4 composites could be charged and discharged faster and had higher capacitance than free Mn 3O 4 nanorods. The capacitance of the composites was 100\% retained after 10 000 cycles at a charging rate of 5 A/g.",

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AU - Mallouk, Thomas E.

PY - 2012/3/27

Y1 - 2012/3/27

N2 - Graphene/Mn 3O 4 composites were prepared by a simple hydrothermal process from KMnO 4 using ethylene glycol as a reducing agent. Mn 3O 4 nanorods of 100 nm to 1 μm length were observed to be well-dispersed on graphene sheets. To assess the properties of these materials for use in supercapacitors, cyclic voltammetry and galvanostatic charging-discharging measurements were performed. Graphene/Mn 3O 4 composites could be charged and discharged faster and had higher capacitance than free Mn 3O 4 nanorods. The capacitance of the composites was 100% retained after 10 000 cycles at a charging rate of 5 A/g.

AB - Graphene/Mn 3O 4 composites were prepared by a simple hydrothermal process from KMnO 4 using ethylene glycol as a reducing agent. Mn 3O 4 nanorods of 100 nm to 1 μm length were observed to be well-dispersed on graphene sheets. To assess the properties of these materials for use in supercapacitors, cyclic voltammetry and galvanostatic charging-discharging measurements were performed. Graphene/Mn 3O 4 composites could be charged and discharged faster and had higher capacitance than free Mn 3O 4 nanorods. The capacitance of the composites was 100% retained after 10 000 cycles at a charging rate of 5 A/g.

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A facile and template-free hydrothermal synthesis of Mn ₃O ₄ nanorods on graphene sheets for supercapacitor electrodes with long cycle stability

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