High-temperature-resistant long-service-life electrolyte for aluminum electrolytic capacitor

The invention discloses a high-temperature-resistant long-service-life electrolyte for an aluminum electrolytic capacitor. The preparation process comprises the steps of S01, preparing materials whichcomprise a conductive polymer basic composition, branched chain polycarboxylate and an ethylene glycol system solvent. According to the invention, the electrolyte is developed through the cooperationof the conductive polymer, the branched chain polycarboxylate and the ethylene glycol system, wherein the branched chain polycarboxylate has the effects of providing oxygen ions and repairing an anodic oxide film, and the conductive polymer has the effects of reducing the impedance of the electrolyte and improving the conductivity of the electrolyte; the anode oxide film is reinforced and protected, the impedance of the anode oxide film is reduced, and the conductivity of the anode oxide film is improved, so that the use temperature and the working voltage of the aluminum electrolytic capacitor are improved, the hydra