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Highly flexible reduced graphene oxide@polypyrrole-polyethylene glycol foam for supercapacitors

Journal Article


Abstract


  • A flexible and free-standing 3D reduced graphene oxide@polypyrrole-polyethylene glycol (RGO@PPy-PEG) foam was developed for wearable supercapacitors. The device was fabricated sequentially, beginning with the electrodeposition of PPy in the presence of a PEG-borate on a sacrificial Ni foam template, followed by a subsequent GO wrapping and chemical reduction process. The 3D RGO@PPy-PEG foam electrode showed excellent electrochemical properties with a large specific capacitance of 415 F g-1 and excellent long-term stability (96% capacitance retention after 8000 charge-discharge cycles) in a three electrode configuration. An assembled (two-electrode configuration) symmetric supercapacitor using RGO@PPy-PEG electrodes exhibited a remarkable specific capacitance of 1019 mF cm-2 at 2 mV s-1 and 95% capacitance retention over 4000 cycles. The device exhibits extraordinary mechanical flexibility and showed negligable capacitance loss during or after 1000 bending cycles, highlighting its great potential in wearable energy devices.

UOW Authors


  •   Chen, Jun
  •   Liu, Yuqing (external author)

Publication Date


  • 2020

Citation


  • Cai, C., Fu, J., Zhang, C., Wang, C., Sun, R., Guo, S., . . . Chen, J. (2020). Highly flexible reduced graphene oxide@polypyrrole-polyethylene glycol foam for supercapacitors. RSC Advances, 10(49), 29090-29099. doi:10.1039/d0ra05199c

Scopus Eid


  • 2-s2.0-85090414193

Start Page


  • 29090

End Page


  • 29099

Volume


  • 10

Issue


  • 49

Abstract


  • A flexible and free-standing 3D reduced graphene oxide@polypyrrole-polyethylene glycol (RGO@PPy-PEG) foam was developed for wearable supercapacitors. The device was fabricated sequentially, beginning with the electrodeposition of PPy in the presence of a PEG-borate on a sacrificial Ni foam template, followed by a subsequent GO wrapping and chemical reduction process. The 3D RGO@PPy-PEG foam electrode showed excellent electrochemical properties with a large specific capacitance of 415 F g-1 and excellent long-term stability (96% capacitance retention after 8000 charge-discharge cycles) in a three electrode configuration. An assembled (two-electrode configuration) symmetric supercapacitor using RGO@PPy-PEG electrodes exhibited a remarkable specific capacitance of 1019 mF cm-2 at 2 mV s-1 and 95% capacitance retention over 4000 cycles. The device exhibits extraordinary mechanical flexibility and showed negligable capacitance loss during or after 1000 bending cycles, highlighting its great potential in wearable energy devices.

UOW Authors


  •   Chen, Jun
  •   Liu, Yuqing (external author)

Publication Date


  • 2020

Citation


  • Cai, C., Fu, J., Zhang, C., Wang, C., Sun, R., Guo, S., . . . Chen, J. (2020). Highly flexible reduced graphene oxide@polypyrrole-polyethylene glycol foam for supercapacitors. RSC Advances, 10(49), 29090-29099. doi:10.1039/d0ra05199c

Scopus Eid


  • 2-s2.0-85090414193

Start Page


  • 29090

End Page


  • 29099

Volume


  • 10

Issue


  • 49