Thiourea-formaldehyde resin based electrode material of super capacitor and preparation method and application of electrode material

The invention relates to a thiourea-formaldehyde resin based electrode material of a super capacitor and a preparation method and application of the electrode material. The electrode material is sheet-shaped graphitized carbon material rich in nitrogen and sulfur atoms. The preparation method comprises the following steps that thiourea is dissolved in 100mL of distilled water, and supersonic dispersing and stirring are carried out till the thiourea is dissolved completely to obtain a thiourea aqueous solution; the thiourea aqueous solution is placed in a water bath, 0.4mL of a concentrated HCl and formaldehyde solution is added 0.5h later under a stirring condition, and a milk white reaction solution is obtained after reaction for 3-12h; the reaction solution is filtered, washed and dried to obtain white thiourea-formaldehyde resin; and the white thiourea-formaldehyde resin is processed at the high temperature of 700-800 DEG C for 3h to obtain the thiourea-formaldehyde resin based electrode material of the su