Anhydrous ultralow-temperature wide temperature working electrolyte and preparation method thereof

Abstract

The invention relates to anhydrous ultralow-temperature wide temperature working electrolyte which comprises, according to the parts by weight, 55-70 parts of gamma-butyrolactone, 10-20 parts of ortho-nitroanisole, 0.3-0.5 part of additive, 3-8 parts of gluconic acid delta lactone, 10-15 parts of ammonium succinate and 2-8 parts of passivant. The preparation method comprises the steps that firstly the gamma-butyrolactone, the ortho-nitroanisole and the gluconic acid delta lactone are mixed and the system is heated and the heat is preserved; then the ammonium succinate is added and the system is heated and the heat is preserved; and finally the additive and the passivant are added and the system is heated and the heat is preserved, then the temperature decreases to 80-90 DEG C within 5-10min and the heat is preserved, and finally the system is heated to 120-140 DEG C within 20-30min and the heat is preserved and then the system is naturally cooled. The anhydrous ultralow-temperature wide temperature working electrolyte has great electrochemical property.

Description

technical field

[0001] The invention belongs to the field of electrolytes, and in particular relates to a capacitor electrolyte and a preparation method thereof. Background technique

[0002] Aluminum electrolytic capacitors are one of the basic components of electronic products. The electrolyte is the cathode of aluminum electrolytic capacitors, and its performance has a certain impact on the performance of aluminum electrolytic capacitors. The existing electrolytic solution has poor electrochemical performance under extremely cold weather conditions, which causes the electrolytic capacitor to fail to work normally. Contents of the invention

[0003] Purpose of the invention: The purpose of the invention is to overcome the deficiencies in the prior art and provide a water-free ultra-low temperature wide temperature working electrolyte with good electrochemical performance and a preparation method thereof.

[0004] Technical solution: In order to solve the above technical...