AI Article Synopsis
- Miniature energy storage devices, crucial for wearable electronics, are explored through the fabrication of flexible micro-supercapacitors (MSCs) made from laser-induced graphene using graphene oxide (GO) on polyimide film.* -
- The study measured the areal capacitance of these MSCs with a gel electrolyte, observing a significant initial increase that stabilized after six days of testing.* -
- The optimized MSC, using the best concentration of GO, showed a high capacitance of 10.07 mF cm and maintained 87.9% capacitance retention after 5000 charge-discharge cycles, proving its effectiveness for flexible applications.*
Article Abstract
Miniature energy storage devices are vital for developing flexible and wearable electronics. This paper discusses the fabrication of flexible laser-induced graphene-based micro-supercapacitors (MSCs) using graphene oxide (GO) coated polyimide film as the precursor for laser scribing. The areal capacitance of the MSCs was assessed daily after applying a HSO/polyvinyl alcohol (PVA) gel electrolyte. The capacitance displayed a substantial increase in the early days before stabilizing at a consistent value. The stabilization time was evaluated through systematic experimentation conducted over ten consecutive days. The experiments showed that the capacitance stabilized after six days. Various concentrations of GO were used to assemble the MSCs, and their performance was evaluated to determine the optimal concentration. The electrochemical impedance spectroscopy revealed that the supercapacitor fabricated with the optimum concentration of GO exhibited the lowest resistance. The optimized MSC displayed an areal capacitance of 10.07 mF cmat a current density of 13A cm. The device could maintain a reliable output at different bending states and retain 87.9% of its original capacitance after 5000 charge-discharge cycles, highlighting its suitability for flexible and self-powered systems.
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| http://dx.doi.org/10.1088/1361-6528/ad983a | DOI Listing |
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