Study on the Working Electrolyte for Medium-high Voltage Aluminum Electrolytic Capacitor
The effects of auxiliary solute and polymer additive on performance of the working electrolyte for medium-high voltage aluminum electrolytic capacitor,which ammonium sebacate as solute and ethylene as solvent were studied.The results showed that when the mannitol and ammonium borate added was 2.0％and 3.0％,respectively,and the polymer additive was 0.8％,at 40 ℃,the pH of working electrolyte was 5.96,conductivity was 2 050 μS·cm-1,the initial sparking voltage was 417 V,and the sparking time above 500 V was 73 s.The leakage current and loss of aluminum electrolytic capacitors(400 V,6.8 µF)prepared with the electrolyte was 12.5 μA and 0.052,respectively.
medium-high voltagealuminum capacitorelectrolytesparking voltage
NETL
NSTL
万方数据
