A kind of sheet laminated all-solid-state supercapacitor and preparation method thereof

Abstract

The invention discloses a sheet-like laminated all-solid supercapacitor and a preparation method thereof, belonging to the technical field of capacitors and their preparation. A sheet-like laminated all-solid-state supercapacitor includes a capacitor shell, and a blind hole is dug at the top of the side of the capacitor shell. An all-solid supercapacitor core is placed inside the capacitor case, electrodes are connected to both ends of the all-solid supercapacitor core, and paste-variable conductive silver paste is connected between the inner wall of the capacitor case and the blind slot and the all-solid supercapacitor core. Layer, on the inner wall of the capacitor shell, there is a prefabricated thin layer of pasted conductive silver paste. It is relatively simple to prefabricate the thin layer of pasted conductive silver paste alone, and it will not pollute the capacitor shell. When installing an all-solid supercapacitor core, use The thin layer of pasted conductive silver paste is deformed, so that the conductive silver paste layer fully contacts the side end of the all-solid supercapacitor core, improves the adhesion between the conductive silver paste layer and the all-solid supercapacitor core, and improves the production quality of the all-solid supercapacitor and the later stage. Use efficiency.

Description

technical field [0001] The invention relates to the technical field of capacitors and their preparation, more specifically, to a sheet-like laminated all-solid super capacitor and a preparation method thereof. Background technique [0002] Two conductors close to each other, sandwiching a layer of non-conductive insulating medium, constitute a capacitor. A capacitor stores charge when a voltage is applied between its two plates. The capacitance of a capacitor is numerically equal to the ratio of the amount of charge on a conductive plate to the voltage between the two plates. The basic unit of capacitance of a capacitor is farad (F). Capacitive elements are usually represented by the letter C in circuit diagrams. [0003] Supercapacitors, also known as electric double layer capacitors and electrochemical capacitors, are a new type of electrochemical energy storage device whose electrochemical performance is between traditional capacitors and batteries. It mainly stores e...

AI Technical Summary

Problems solved by technology

Liquid supercapacitors are the main choice of supercapacitors in the existing market due to the good ionic conductivity of liquid electrolytes, but they also have the following shortcomings: 1. Low working voltage; 2. Easy to leak; 3. Strong corrosion; 4. Process Difficult to control precision, 5, large performance differences between individuals and difficult to make large-scale components

[0006] Due to the small volume of the capacitor, it is difficult to coat the conductive silver paste inside it, and it is difficult to control the uniformity of the conductive silver paste coating during the coating process, and it is easy to pollute the outer shell of the capacitor. In addition, it is difficult to ensure the uniformity of the coating. The conductive silver paste can be well in full contact with the side end of the all-solid supercapacitor core in the later stage, which makes the use efficiency of the all-solid supercapacitor low and prone to failure during use

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