• 文献标题:   A Facile and Template-Free Hydrothermal Synthesis of Mn3O4 Nanorods on Graphene Sheets for Supercapacitor Electrodes with Long Cycle Stability
  • 文献类型:   Article
  • 作  者:   LEE JW, HALL AS, KIM JD, MALLOUK TE
  • 作者关键词:   mn3o4, graphene, nanorod, supercapacitor
  • 出版物名称:   CHEMISTRY OF MATERIALS
  • ISSN:   0897-4756 EI 1520-5002
  • 通讯作者地址:   Korea Adv Inst Sci Technol
  • 被引频次:   552
  • DOI:   10.1021/cm203697w
  • 出版年:   2012

▎ 摘  要

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.