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Development of Graphene Oxide/Polyaniline Inks for High Performance Flexible Microsupercapacitors via Extrusion Printing

Lookup NU author(s): Dr Shayan SeyedinORCiD


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Extrusion printing of interdigitated electrodes for flexible microsupercapacitors (fMSCs) offers an attractive route to the fabrication of flexible devices where cost, scalability, and processability of ink formulations are critical. In this work, highly concentrated, viscous, and water‐dispersible inks are developed based on graphene oxide (GO)/polyaniline (PANi) composite for extrusion printing. The optimized GO/PANi‐based all‐solid‐state symmetric fMSCs obtained by extrusion printing interdigitated microelectrodes can deliver outstanding areal capacitance of 153.6 mF cm−2 and volumetric capacitance of 19.2 F cm−3 at 5 mV s−1. It is shown that by fabricating asymmetric fMSCs using the GO/PANi as positive electrode and a graphene‐based negative electrode, the voltage window can be widened from 0.8 to 1.2 V and improvements can be achieved in energy density (from 3.36 to 4.83 mWh cm−3), power density (from 9.82 to 25.3 W cm−3), and cycling stability (from 75% to 100% capacitance retention over 5000 cycles) compared with the symmetric counterpart. The simple ink preparation and facile device fabrication protocols reported here make the scalable fabrication of extrusion printed fMSCs a promising technology.

Publication metadata

Author(s): Liu Y, Zhang B, Xu Q, Hou Y, Seyedin S, Qin S, Wallace GG, Beirne S, Razal JM, Chen J

Publication type: Article

Publication status: Published

Journal: Advanced Functional Materials

Year: 2018

Volume: 28

Issue: 21

Pages: 1706592

Online publication date: 30/03/2018

Acceptance date: 22/02/2018

ISSN (print): 1616-301X

ISSN (electronic): 1616-3028

Publisher: Wiley


DOI: 10.1002/adfm.201706592


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