| 摘要 |
<p>A wet electrolytic capacitor comprising a porous anode body that contains a dielectric layer formed by anodic oxidation, a cathode comprising a metal substrate coated with a conductive polymer; and an aqueous electrolyte disposed in contact with the cathode and the anode. The electrolyte comprises a salt of a weak organic acid and water. The electrolyte has a pH of from about 4 to about 7 and an ionic conductivity of from about 0.1 to about 30 milliSiemens per centimeter or more, determined at a temperature of 25°C. The organic acid may, for example, be one of or a blend of carboxylic acid, acrylic acid, methacrylic acid, malonic acid, succinic acid, salicylic acid, adipic acid, maleic acid, malic acid, oleic acid, gallic acid, tartaric acid, dextotartaric acid, mesotartaric acid, citric acid, formic acid, acetic acid, glycolic acid, oxalic acid, propionic acid, phthalic acid, isophthalic acid, glutaric acid, gluconic acid, lactic acid, aspartic acid, glutaminic acid, itaconic acid, trifluoroacetic acid, barbituric acid, cinnamic acid, benzoic acid, 4-hydroxybenzoic acid or aminobenzoic acid.</p> |
