Preparation method of anode foil for rapid charge and discharge aluminum electrolytic capacitor

The invention provides a preparation method of an anode foil for a rapid charge-discharge aluminum electrolytic capacitor, which comprises the following steps of: treating a corrosion foil by adopting a pretreatment solution consisting of more than two of oxalic acid, phosphoric acid, sulfuric acid, ammonium dihydrogen phosphate, phosphotungstic acid, sodium tungstate and the like, and then forming the corrosion foil, so that the surface of the prepared anode foil is provided with a compact oxidation film with a net structure; the anode foil has the characteristics of low loss, instant large current impact resistance, good temperature rise resistance and the like, is stable in service life characteristic, is suitable for manufacturing a rapid charge-discharge aluminum electrolytic capacitor, and is completely incomparable with a conventional anode foil. 本发明提供一种快速充放电铝电解电容器用阳极箔的制备方法，将腐蚀箔先采用草酸、磷酸、硫酸、磷酸二氢铵、磷钨酸、钨酸钠等其中两种以上组成的预处理液进行处理后再化成，制得的阳极箔表面具有呈网状结构致密氧化膜，该阳极箔具有损耗低、耐瞬间大电流冲击及耐温升特性好等特点，寿命特征稳定，适用于制作快速充放电铝电解电容器，常规阳极