• 文献标题:   Mn3O4-polyaniline-graphene as distinctive composite for use in high-performance supercapacitors
  • 文献类型:   Article
  • 作  者:   HALDAR P, BISWAS S, SHARMA V, CHOWDHURY A, CHANDRA A
  • 作者关键词:   nanomaterial, polymer, supercapacitor, composite
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:   Indian Inst Technol Kharagpur
  • 被引频次:   9
  • DOI:   10.1016/j.apsusc.2019.06.106
  • 出版年:   2019

▎ 摘  要

Introduction of graphene into the stable matrix of Mn3O4-polyaniline composite leads to supercapacitor electrode that can deliver specific capacitance > 1000 F g(-1). This is nearly double the value, which is observed in conventional type Mn3O4-polyaniline composite that is able to deliver similar to 500 F g(-1), at a scan rate of 5 mV s(-1) in the voltage window-1 to 1 V. This value is also much greater than those obtained in most of the niche carbon or transition metal oxide based supercapacitors. Cycling studies, carried out at a current density 25 A g(-1) and for 3000 cycles, indicated that the composite continue to retain nearly similar to 97% of the initial capacitance. The enhancement can be explained in terms of the connected percolated conductive path, which originates due to the dispersed graphene sheets.