Hybrid minitype super capacitor based on organic electrolyte and manufacturing method thereof

Abstract

The invention discloses a hybrid minitype super capacitor and a manufacturing method thereof, and belongs to the technical field of MEMS. The minitype super capacitor is composed of a support body, a positive electrode, an isolated body, a negative electrode and aluminum seal covers, wherein the minitype super capacitor is in a coiling structure; the positive electrode, the isolated body and the negative electrode are soaked in a lithium perchlorate organic electrolyte; the positive electrode comprises an active carbon energy storage material, an acetylene black conducting material and polyvinylidene fluoride adhesive, and is prepared by a screen printing method; the negative electrode comprises a lithium titanate energy storage material, acetylene black and polyvinylidene fluoride adhesive, and is prepared by the screen printing method; the isolated body is a copolymer in a polyvinylidene fluoride-hexafluoropropylene porous structure and is prepared by a spin coating method; and the ends of the positive electrode and the negative electrode are respectively provided with the aluminum seal cover prepared by a magnetron sputtering method, and the aluminum seal covers are used as electrode terminals to perform the function of a current collector. The large contact area of the aluminum seal covers and the electrodes can effectively reduce the resistance of the minitype super capacitor, thereby enhancing the energy storage characteristic of the minitype super capacitor; and the invention can increase the voltage of the minitype super capacitor to 3.6 V.

Description

technical field [0001] The invention belongs to the technical field of MEMS, in particular to a hybrid micro-supercapacitor based on an organic electrolyte and a manufacturing method thereof. Background technique [0002] Miniaturization, miniaturization, and integration of electronic products are the general trend of technological development in the world today. Micro Electro Mechanical Systems (MEMS for short) has the characteristics of mobility, self-control, and integration, and is one of the most important technological innovations in recent years. When a subsystem can be integrated on a chip, the power supply must also complete the revolution of miniaturization and miniaturization. MEMS micro energy system refers to the integration of one or more power supply devices into a micro system with a characteristic size of micron level and a centimeter level based on MEMS technology, which can realize long-term, high-efficiency, multi-mode power supply, and is especially sui...

AI Technical Summary

Problems solved by technology

So far, no effective solution has been proposed for how to effectively reduce the internal resistance of micro-supercapacitors.

In addition, the operating voltage of micro supercapacitor cells based on organic electrolyte and active carbon positive and negative electrodes of the same structure does not exceed 2.7V. So far, no effective solution has been proposed for how to increase the cell operating voltage of micro supercapacitors.

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