研究目的
To present a new kind of freestanding, foldable and quasi-solid-state supercapacitors (SCs) that single SC units were stacked in the thickness direction with a common electrode to reduce their occupied areas and improve areal performances.
研究成果
The study successfully demonstrated the fabrication of freestanding, foldable, and quasi-solid-state SCs using laser graving technology. The areal performances of the foldable SCs increased linearly with the number of single units, providing a new strategy to improve the areal properties of on-chip SCs from device design.
研究不足
The symmetric PANI/CNT SCs have a relatively narrow working voltage of 0.8 V, which severely limited their performances. The areal performances of the foldable SCs can be further improved by utilizing a negative electrode to broaden their voltage window.
1：Experimental Design and Method Selection:
The study utilized laser graving technology to prepare high conductive and high-strength PANI/CNT electrode patterns for quasi-solid-state foldable SCs. Single SC units were integrated into the foldable SC by sharing a common electrode.
2：Sample Selection and Data Sources:
PANI/CNT composite paper was fabricated and characterized for its morphologies, conductivity, and mechanical properties.
3：List of Experimental Equipment and Materials:
A laser graving system with computer control, carbon dioxide laser, SEM (FEI NANOSEM450), stretch tester (Micro Tester 5848, INSTRON), galvanostatic discharge-charge (GCD, Land battery system), and cyclic voltammetry (CV, Keithley 2410).
4：0).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The PANI/CNT papers were cut into designed patterns by laser graving. The electrodes were sonicated in ethanol and dried before use. The electrolyte gel was prepared and used to assemble the SCs.
5：Data Analysis Methods:
The electrochemical properties of the foldable SCs were characterized by GCD and CV measurements.
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