Journal
CHEMISTRY OF MATERIALS
Volume 24, Issue 6, Pages 1158-1164Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm203697w
Keywords
Mn3O4; graphene; nanorod; supercapacitor
Funding
- National Science Foundation [CHE-0910513]
- National Research Foundation of Korea
- Ministry of Education, Science and Technology [2009-0076882]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0910513] Funding Source: National Science Foundation
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Graphene/Mn3O4 composites were prepared by a simple hydrothermal process from KMnO4 using ethylene glycol as a reducing agent. Mn3O4 nanorods of 100 nm to 1 mu m length were observed to be well-dispersed on graphene sheets. To assess the properties of these materials for use in super-capacitors, cyclic voltammetry and galvanostatic charging discharging measurements were performed. Graphene/Mn3O4 composites could be charged and discharged faster and had higher capacitance than free Mn3O4 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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