Preparation method of electrolyte for capacitor, electrolyte and application thereof

Abstract

The invention provides a preparation method of electrolyte for a capacitor. The preparation method comprises the following process steps of: adding glycol, water, ammonium adipate, ammonium 4-nitrobenzoate dihydrate and anti-hydration auxiliary agent sequentially into a liquid mixing pot; heating the mixture; controlling the temperature to be 50 to 60 DEG C; stirring for 1 to 2 hours; after the mixture is dissolved completely, cooling to 30 to 40 DEG C; adjusting the pH value to be 6.5 to 7.0 by using ammonia or ammonia water; and discharging to obtain the electrolyte for the capacitor. The invention also provides the electrolyte. The electrolyte consists of the glycol, the water, the ammonium adipate, the ammonium 4-nitrobenzoate dihydrate and the anti-hydration auxiliary agent. The electrolyte is applicable to high-frequency, low-impedance, low-electric-leakage and low-voltage electrolytic capacitors.

Description

technical field [0001] The invention relates to the technical field of electrolytes, in particular to a method for preparing an electrolyte suitable for low-voltage, high-temperature-resistant, and long-life electrolytic capacitors and the electrolyte. Background technique [0002] Since 1987, the global capacitor production has grown at a rate of more than 20% per year, but with the development of integrated circuits (IC) and very large-scale integration (VLSI) to a certain extent, the survival of electrolytic capacitors has been impacted, and electrolytic capacitors are in some replaced by other capacitors in the circuit. The improvement of the performance of electrolytic capacitors is the fundamental path to enhance the competitiveness of enterprises. At present, the performance shortcomings of electrolytic capacitors mainly include: large leakage current, large loss value, short life, and limited application range. Large leakage current is one of the performance shortc...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing an electrolyte for low-voltage electrolytic capacitors and the electrolyte, so as to solve the problem that the current electrolyte is difficult to meet the requirements of high frequency, low impedance, low leakage, and long life of the capacitor, especially the high water content When the electrolyte is used, the technical problems of large capacitor leakage current and short storage life due to hydration

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