Development of Graphene Oxide/Polyaniline Inks for High Performance Flexible Microsupercapacitors via Extrusion Printing
By Yuqing Liu, Binbin Zhang, Qun Xu, Yuyang Hou, Shayan Seyedin, Si Qin, G. Wallace, S. Beirne, J. Razal, Jun Chen. 2018
168 citations recorded by the source corpus.
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.
Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/ca3dd817a65650122b4121851443a7f58d2b0e82
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In Biomedical Engineering
In Electronic, Optical and Magnetic Materials
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Citations in the corpus
- Ink-based 3D printing technologies for graphene-based materials: a review (2019, methodology): “DW of graphene-based materials has been used in many areas, including supercapacitor [48, 171], Li-ion battery [25], conductive ceramic nanocomposites [168], scaffold [164], and heater [32].”
- A Review on Recent Advancements of Graphene and Graphene-Related Materials in Biological Applications (2021, methodology): “Contrary to films, bulk composites were produced by the dispersion of graphene and graphene derivatives in a polymer–metal matrix by using ultrasonication [58] or classical extrusion procedures [59,60].”