Deionizing electrode material for capacitor and preparation method thereof

The invention provides a preparation method of a deionized electrode material for a capacitor, and is characterized in that the method comprises the following steps: a) preparing a graphene oxide nano roll; b) preparing a three-dimensional ordered macroporous-organic framework material; and c) carrying out ultrasonic treatment on the graphene oxide nano-roll in 50ml of ultrapure water containing 1wt% of poly (diallyldimethylammonium chloride) (PDDA) for 5 hours, then filtering and carrying out vacuum drying to obtain a PDDA modified graphene oxide nano-roll, then mixing the three-dimensional ordered macroporous-organic framework material and the PDDA modified graphene oxide nano-roll in THF according to the mass ratio of 5: 1, and stirring the mixture for 5 hours at room temperature under the protection of argon, centrifuging the mixture, washing with THF, and carrying out heat treatment under the protection of nitrogen to obtain the final product. The electrode material provided by the invention has a higher