Post-hydration treatment and nano-SiO2 blocking defects in anodized aluminum foils to improve the breakdown voltage of a PEDOT:PSS solid electrolytic capacitor

The post-hydration treatment of anodized aluminum foil was followed by electrochemical adsorption of a nano-SiO 2 layer covering the surface of the alumina dielectric, which resulted in a 120 V increase in the solid capacitor's breakdown voltage.