Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/96176
Title: Flexible all-solid-state asymmetric supercapacitors based on free-standing carbon nanotube/graphene and Mn3O4 nanoparticle/graphene paper electrodes
Authors: Gao, Hongcai
Xiao, Fei
Ching, Chi Bun
Duan, Hongwei
Issue Date: 2012
Source: Gao, H., Xiao, F., Ching, C. B., & Duan, H. (2012). Flexible All-Solid-State Asymmetric Supercapacitors Based on Free-Standing Carbon Nanotube/Graphene and Mn . ACS Applied Materials & Interfaces, 4(12), 7020-7026.
Series/Report no.: ACS applied materials & interfaces
Abstract: We report the design of all-solid-state asymmetric supercapacitors based on free-standing carbon nanotube/graphene (CNTG) and Mn3O4 nanoparticles/graphene (MG) paper electrodes with a polymer gel electrolyte of potassium polyacrylate/KCl. The composite paper electrodes with carbon nanotubes or Mn3O4 nanoparticles uniformly intercalated between the graphene nanosheets exhibited excellent mechanical stability, greatly improved active surface areas, and enhanced ion transportation, in comparison with the pristine graphene paper. The combination of the two paper electrodes with the polymer gel electrolyte endowed our asymmetric supercapacitor of CNTG//MG an increased cell voltage of 1.8 V, a stable cycling performance (capacitance retention of 86.0% after 10 000 continuous charge/discharge cycles), more than 2-fold increase of energy density (32.7 Wh/kg) compared with the symmetric supercapacitors, and importantly a distinguished mechanical flexibility.
URI: https://hdl.handle.net/10356/96176
http://hdl.handle.net/10220/10248
ISSN: 1944-8244
DOI: 10.1021/am302280b
Rights: © 2012 American Chemical Society.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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