Electronic Materials Letters

, Volume 15, Issue 3, pp 331–341 | Cite as

Electrochemical Deposition of γ-MnO2 on Ag/rGO Hybrid Films as Flexible Electrode Materials for Asymmetric Supercapacitor

  • Shiqing Sun
  • Yongkun Liu
  • Guohua JiangEmail author
  • Bo Yu
  • Uwamahoro Evariste
  • Pianpian MaEmail author
Original Article - Energy and Sustainability


The flexible electrodes are the essential components for fabricating modern flexible supercapacitors. In this study, a composite hybrid film integrated with silver nanoparticles (Ag NPs), reduced graphene oxide (rGO) and γ-MnO2 nanorods as a flexible electrode has been developed by the electrochemical deposition method. The substrate (rGO) of the electrode not only provides mechanical stability but also ensures fast electron transfer during charge–discharge. The Ag NPs distributed in electrode provide the electronic channel to enhance the electric conductivity. The γ-MnO2 electroplated on the surface of hybrid films further improved the electrochemical performance of them. The resultant γ-MnO2/Ag/rGO hybrid films exhibit a high specific capacitance of 1090.3 F g−1 at current density of 0.3 A g−1. The asymmetric supercapacitor (ASC) devices were further fabricated by γ-MnO2/Ag/rGO films as anode and AC/rGO films as cathode electrodes within a wide operating voltage of 0–1.7 V. The energy density of obtained ASC devices was 71.8 Wh kg−1 at a power density of 279.4 W kg−1.

Graphical Abstract


Supercapacitor Electrode Hybrid film 



This work was financially supported by Collaborative Innovation Center for Modern Textile Technology of Zhejiang Province (2011-Program) (20160202) and “521 Talents Training Plan” in Zhejiang Sci-Tech University.

Supplementary material

13391_2019_132_MOESM1_ESM.docx (2.4 mb)
Supplementary material 1 (DOCX 2507 kb)


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Copyright information

© The Korean Institute of Metals and Materials 2019

Authors and Affiliations

  1. 1.National Engineering Laboratory for Textile Fiber Materials and Processing Technology (Zhejiang)HangzhouChina
  2. 2.Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT)Ministry of EducationHangzhouChina
  3. 3.Department of Polymer MaterialsZhejiang Sci-Tech UniversityHangzhouChina
  4. 4.Institute of Smart Fiber MaterialsZhejiang Sci-Tech UniversityHangzhouChina

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