Abstract: A core includes an aluminum foil, a first insulating plate and a second insulating plate. The first insulating plate and the second insulating plate are insulatedly bonded to opposite two sides of the aluminum foil, respectively. A middle of each of the first insulating plate and the second insulating plate is provided with a rectangular hollow portion. A surface of the hollow portion is sequentially provided with a conductive polymer layer, a conductive carbon paste layer and a conductive silver paste layer from inside to outside. A multilayer solid aluminum electrolytic capacitor, including N cores, a conductive frame, a rivet, a substrate and a resin casing, is also provided. This application also provides a method for preparing the multilayer solid aluminum electrolytic capacitor.

Abstract: A method for preparing a stacked solid aluminum electrolytic capacitor is disclosed. The method includes preparation of a plurality of cores, stacking and fixing of the plurality of cores in a case and encapsulation of the case. The core is prepared through the following steps. An I-shaped aluminum foil is divided into an anode part and a cathode part by applying an insulating blocking tape, where the cathode part includes a dielectric layer, which is subjected to formation. A conductive polymer layer is formed on a surface of the cathode part, and is then impregnated with conductive colloidal graphite followed by drying to form a conductive carbon paste layer. The conductive carbon paste layer is impregnated with a conductive silver paste followed by drying to form a conductive silver paste layer. After that, a core is obtained.

Abstract: This application provides a multilayer solid aluminum electrolytic capacitor and a method for preparing the same. The multilayer solid aluminum electrolytic capacitor includes a plurality of cores, a rivet, a case, and a cover plate. The cores are stacked in sequence and fastened in the case through the rivet to form a semi-finished capacitor. The semi-finished capacitor is covered by the cover plate and then sealed to form the solid aluminum electrolytic capacitor.

Abstract: This application provides a multilayer solid aluminum electrolytic capacitor and a method for preparing the same. The multilayer solid aluminum electrolytic capacitor includes a plurality of cores, a rivet, a case, and a cover plate. The cores are stacked in sequence and fastened in the case through the rivet to form a semi-finished capacitor. The semi-finished capacitor is covered by the cover plate and then sealed to form the solid aluminum electrolytic capacitor.