Elaborate Control of Inkjet Printer for Fabrication of Chip-based Supercapacitors

요약

This paper provides a technique for manufacturing chip-based supercapacitors using an inkjet printer. Methodologies are described in detail to synthesize inks, adjust software parameters, and analyze the electrochemical results of the manufactured supercapacitor.

초록

There are tremendous efforts in various fields to apply the inkjet printing method for the fabrication of wearable devices, displays, and energy storage devices. To get high-quality products, however, sophisticated operation skills are required depending on the physical properties of the ink materials. In this regard, optimizing the inkjet printing parameters is as important as developing the physical properties of the ink materials. In this study, optimization of the inkjet printing software parameters is presented for fabricating a supercapacitor. Supercapacitors are attractive energy storage systems because of their high power density, long lifespan, and various applications as power sources. Supercapacitors can be used in the Internet of Things (IoT), smartphones, wearable devices, electrical vehicles (EVs), large energy storage systems, etc. The wide range of applications demands a new method that can fabricate devices in various scales. The inkjet printing method can break through the conventional fixed-size fabrication method.

서문

In the past decades, multiple printing methods have been developed for various applications, including wearable devices¹, pharmaceuticals², and aerospace components³. The printing can be easily adapted for various devices by simply changing the materials to be used. Moreover, it prevents the wastage of raw materials. To manufacture electronic devices, several printing methods such as screen printing⁴, push-coating⁵, and lithography⁶ have been developed. Compared to these printing technologies, the inkjet printing method has mu....

프로토콜

1. Design of pattern using PCB CAD program

1. Run the CAD program. Click on the File button atop the program window. To form a new project file, click on the New and Project buttons.
2. To generate the board file, click on the File, New, and Board buttons in order. Set the grid size, multiple, and alt values by clicking on the mesh-shaped Grid button at the top left of the created Board File window (or clicking on View and Grid in order at the top of the window).
....

결과

The ink was synthesized according to step 2, and the characteristics of the ink could be confirmed according to reference¹⁸. Figure 8 shows the structural properties of conductive ink and EDLC ink, as well as the rheological properties of EDLC ink reported in the previous research¹⁸. The conductive ink is well sintered to form continuous conducting paths, and the nanoscale roughness is expected to increase the contact area with the EDLC ink (

토론

The critical steps in this protocol are involved in the software parameter setup to print the designed pattern by finely adjusting the parameter values. Customized printing can lead to structural optimization and obtaining new mechanical properties¹⁹. The inkjet printing method with software parameter control can be used for sophisticated printing in various industries by selecting the optimized material for the printing process.

In the fabrication of supercapacitors us.......

자료

Name	Company	Catalog Number	Comments
2” x 3” FR­4 board	Voltera	SKU: 1000066	PCB substrate
Activated carbon	MTI	Np-Ag-0530HT
Eagle CAD	Autodesk		PCB CAD program
Ethyl cellulose	Sigma Aldrich	46070	48.0-49.5% (w/w) ethoxyl basis
Flex 2 conductive ink	Voltera	SKU: 1000333	Flexible Ag ink
Lithium perchlorate	Sigma Aldrich	634565
Propylene carbonate	Sigma Aldrich	310328
PVDF	Sigma Aldrich	182702	average Mw ~534,000 by GPC
Smart Manager	ZIVE LAB	ver : 6. 6. 8. 9	Electrochemical analysis program
Super-P	Hyundai
Terpineol	Sigma Aldrich	432628
Thinky mixer	Thinky	ARE-310	Planetary mixer
Triton-X	Sigma Aldrich	X100
V-One printer	Voltera	SKU: 1000329	PCB printer
ZIVE SP1	Wonatech		Potentiostat device