Journal of Materials Science

, Volume 55, Issue 1, pp 309–318 | Cite as

Flexible asymmetric microsupercapacitor with high energy density based on all-graphene electrode system

  • Ahmad Hassan Siddique
  • Syeda Wishal Bokhari
  • Rehman Butt
  • Shunqiong Jiang
  • Wen Chen
  • Xufeng ZhouEmail author
  • Zhaoping LiuEmail author
Energy materials


The growing interest and rapid development of portable and flexible wearable electronics has significantly escalated the need of designing miniaturized on-chip energy storage and conversion units as power sources for smart electronic devices. Current aqueous microsupercapacitors suffer from a low energy density due to their small working potential, which limits their potential application. This study presents the fabrication of a 1.6 V flexible, aqueous asymmetric microsupercapacitor (AMSC) with 83% capacitance retention after 5000 cycles which designed by the integration and voltage balance of functionalized graphene-based cathode as a double-layer supercapacitive electrode and iodine-doped graphene anode as a pseudocapacitive electrode. The combination of electrostatic and faradic charge storage mechanism in this all-graphene-based AMSC enables the device to deliver an ultra-high energy–power density (4.75 mWh cm−3 at 61.55 W cm−3) and a stabilized performance even after 2000 repeated bending cycles, which suggests the promising potential of the all-graphene AMSC as a substantial power source for future flexible electronic devices.



This work was supported by the National Key R&D Program of China (Grant No. 2016YFF0204302), the National Natural Science Foundation of China (Grant No. 51872305) and the Key R&D Program of Zhejiang Province (Grant No. 2018C01049).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

10853_2019_3987_MOESM1_ESM.doc (4.2 mb)
Supplementary material 1 (DOC 4315 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Key Laboratory of Graphene Technologies and Applications of Zhejiang Province and Advanced Li-ion Battery Engineering Lab, Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboPeople’s Republic of China
  2. 2.University of Chinese Academy of SciencesBeijingPeople’s Republic of China
  3. 3.Department of Chemical and Materials Engineering, Faculty of EngineeringThe University of AucklandAucklandNew Zealand

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