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Published on: November 30, 2021
Silver-Doped Reduced Graphene Oxide/PANI-DBSA-PLA Composite 3D-Printed Supercapacitors.
Claudia Cirillo1,2, Mariagrazia Iuliano1,2, Davide Scarpa1,2
1Department of Physics "E.R. Caianiello", University of Salerno, Via Giovanni Paolo II, 132-84084 Fisciano, Italy.
Researchers developed high-performance supercapacitors using 3D printing with a novel silver-doped graphene and conductive polymer composite. This 3D printed energy storage offers enhanced stability and capacitance, advancing battery technology.
Area of Science:
- Materials Science and Engineering
- Electrochemistry
- Additive Manufacturing
Background:
- Supercapacitors are crucial for energy storage, but traditional manufacturing limits performance and scalability.
- Developing advanced composite materials is key to enhancing supercapacitor capabilities.
- 3D printing offers a novel pathway for fabricating customized and high-performance energy storage devices.
Purpose of the Study:
- To introduce a novel 3D printing approach for fabricating high-performance supercapacitor electrodes.
- To synthesize and characterize a composite material of silver-doped reduced graphene oxide (rGO) and dodecylbenzenesulfonic acid (DBSA)-doped polyaniline (PANI) blended with polylactic acid (PLA).
- To evaluate the electrochemical performance and stability of the 3D printed supercapacitors.
Main Methods:
- Synthesis of silver-doped rGO and DBSA-doped PANI composite.
- Blending the composite with polylactic acid (PLA) for filament extrusion.
- Fused deposition modeling (FDM) 3D printing of circular disc electrodes.
- Assembly of symmetric supercapacitors with a solid-state electrolyte.
- Electrochemical characterization using cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) tests.
Main Results:
- Achieved mass-specific capacitance values of 136.2 F/g (at 20 mV/s) and 133 F/g (at 1 A/g).
- Demonstrated excellent cycle stability, retaining 91% of initial capacitance after 5000 cycles.
- Silver nanoparticles enhanced rGO conductivity; PANI-DBSA improved electrochemical stability and performance.
Conclusions:
- 3D printing combined with advanced composite materials provides a viable method for producing high-performance supercapacitors.
- The developed silver-doped rGO/PANI-DBSA/PLA composite electrodes exhibit promising electrochemical properties and stability.
- This approach represents a significant advancement over traditional manufacturing for energy storage devices.
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