High-temperature-resistant capacitor electrolyte

Abstract

The invention discloses a high-temperature-resistant capacitor electrolyte, which is composed of the following components in percentage by mass: 98% of sulfuric acid, 0.3-0.48% of phosphoric acid, 12-36% of ethylene glycol, 0.2-0.35% of vanadyl sulfate, 30-45% of r-butyrolactone, 0.3-0.36% of boric acid, 0.32-0.46% of mannitol, 0.2-0.6% of silicotungstic acid, 0.1-0.25% of stabilizer, and 20-35% of deionized water. Compared with the prior art, the high-temperature-resistant capacitor electrolyte overcomes the defect that the service life of a capacitor is drastically shortened because the electrolyte is dried up in a high temperature environment, ensures the safety and the reliability of a capacitor product, and prolongs the service life of the capacitor product; and the high-temperature-resistant capacitor electrolyte is simple and reasonable, and does not produce pollution.

Description

technical field [0001] The invention relates to the field of electrolyte preparation, in particular to a high temperature resistant capacitor electrolyte. Background technique [0002] With the continuous improvement of the quality of electronic products, higher and higher requirements are put forward for the upper limit working temperature and service life of capacitors, such as capacitors used in electronic products such as automotive electronics, displays, high-power chargers, etc. Larger, self-heating and continuous work, the capacitor is in a high-temperature working environment for a long time, and is used in high-temperature electrolytic capacitors in electronic products such as switching power supplies and energy-saving lamps, and has higher requirements for high-temperature resistance. [0003] The electrolyte is the cathode of the capacitor, and its performance has a certain influence on the performance of the capacitor. The existing electrolyte formula is mainly c...

AI Technical Summary

Problems solved by technology

During the use of capacitor products with electrolytes of this formula, the upper limit working temperature is about 85°C, which cannot meet the high temperature resistance range requirements of switching power supplies and energy-saving lamp electronic products.