A kind of high-performance flame-retardant electrolyte and preparation method thereof

Abstract

The invention discloses a high-performance flame-retardant electrolyte. The high-performance flame-retardant electrolyte is prepared from the following raw materials in parts by weight: 80-90 parts of ethylene glycol, 5-10 parts of methylbenzene sulfonate, 5-10 parts of trifluoroacetate, 5-8 parts of polyethylene glycol, 1-2 parts of mannitol, 10-16 parts of silicon dioxide, 20-30 parts of boric acid, 5-15 parts of phosphoric acid, 25-35 parts of acid ammonium mixture, 1-2 parts of hydrogen eliminating agent and 1-3 parts of hydrolysis inhibitor. The high-performance flame-retardant electrolyte is resistant to high temperature and high voltage, and also capable of reducing hydrogen amount generated in the electrolyte working process and lowering electrolyte vapor pressure and hydrolysis reaction, and has flame retardancy; by virtue of the proper amount of added and deposited silicon dioxide, the fluidity of the electrolyte is improved, the adhesive property is lowered and difficulty in electrolyte pouring is effectively lowered; and meanwhile, the high-performance flame-retardant electrolyte is relatively low in cost of the preparation method, easily available in raw materials, simple and concise in process, and has high application prospect.

Description

technical field [0001] The invention relates to the technical field of electrolytes, in particular to a high-performance flame-retardant electrolyte and a preparation method thereof. Background technique [0002] The electrolyte is the cathode of the aluminum electrolytic capacitor, and its performance has a certain influence on the performance of the aluminum electrolytic capacitor. The existing electrolyte formula is mainly composed of solute and solvent. Chinese patent 99121506.0 (aluminum electrolytic capacitor) invented a non-flash point aluminum electrolytic capacitor with little appearance change and characteristic deterioration even if it is used at high temperature for a long time, and has high reliability. The water content of its electrolyte is 20-90wt%, the electrolyte contains ammonium formate, ammonium acetate, ammonium lactate, ammonium glycolate, ammonium oxalate, ammonium succinate, ammonium malonate, ammonium adipate, ammonium benzoate, ammonium glutarate, ...

AI Technical Summary

Problems solved by technology

Chinese patent 99121506.0 (aluminum electrolytic capacitor) invented a non-flash point aluminum electrolytic capacitor with little appearance change and characteristic deterioration even if it is used at high temperature for a long time, and has high reliability. The water content of its electrolyte is 20-90wt%, the electrolyte contains ammonium formate, ammonium acetate, ammonium lactate, ammonium glycolate, ammonium oxalate, ammonium succinate, ammonium malonate, ammonium adipate, ammonium benzoate, ammonium glutarate, More than one compound in ammonium azelate is used as the main electrolyte, and more than 1 wt% of one or more compounds selected from organic carboxylic acids with specific structures or ammonium salts thereof are contained in addition, and the freezing point of the above-mentioned electrolyte is below -10°C, improving It has improved its withstand voltage and high temperature performance, but failed to suppress the generation of hydrogen

As power equipment is more and more widely used, and the existing electrolyte is not very good in terms of high pressure resistance, it is of great practical significance to study and prepare an electrolyte that can withstand high temperature, high pressure and reduce the amount of hydrogen.