Thealuminumfoilinuseisverysophisticatedincompositionandstructure.Highpurityisnolongerrequired,forexample,foranodicfoilswithhighpuritytotheappropriatelevel.Inordertoimprovethenumberofinitialcorrosion,mechanicalstrengthandtheperformanceofdielectricoxidefilm,thefoilshouldcontainsomeimpurities.Forlowvoltagefoil,nocubicstructureisrequired,butforhighvoltagefoil,itisrequiredtoaccountformorethan80%-90%ofthestructure.Forcathodefoil,inordertoincreaseitsspecificvolume,thealloyaluminumfoilwithirregulargrainorientationisrequired.Theworkingelectrolytec***istsofthreecomponents:solvents,solutesandadditives,suchaslong-usedelectrolytesc***istingofethyleneglycol,glycerol,boricacidandammoniawater.Becauseofthedevelopmentofaluminumelectrolyticcapacitor,theelectrolytecannotmeettherequirement,somanynewelectrolytesh***ebeenproducedtoreducetheworkingtemperaturerangeofcapacitor(forexample,-55℃-125℃).Theprinciplesofformulationofthesenewelectrolytesareasfollows:(1)mixingwithtwosolventstoachievecomplementarity;(2)usingtwoweakacidstoprovidethetwoanionicgroupsrequired.3+alkali,suchasorganicamines,Toadjustthephvalueandflashovervoltageoftheelectrolyte.Changeitsresistivity.4Additivestoimprovethecharacteristicsoftheelectrolyte,suchaspreventingwaterfromoccurringinthealuminumoxidefilm)