Oxidant for forming solid capacitor, electrolyte composition comprising oxidant, solid capacitor and manufacturing method of solid capacitor

The invention discloses an oxidant for forming a solid capacitor, an electrolyte composition comprising the oxidant, a solid capacitor formed by the electrolyte composition and a manufacturing method of the solid capacitor. The oxidant for forming the solid capacitor comprises ferric sulfonate, wherein the ferric sulfonate is an ionic compound consisting of a ferric ion and at least one organic sulfonic acid ion; the organic sulfonic acid ion has a structure shown as a formula 1, a formula 2, a formula 3, a formula 4 or a formula 5; in the formula 1, the formula 2, the formula 3, the formula 4 or the formula 5, R11, R12, R13, R14, R15, R21, R22, R23, R24, R25, R26, R27, R31, R32, R33, R34, R35, R36, R41, R42, R43, R44, R45, R46, R47, R48, R49, R51, R52 and R53 are independent respectively, and are H, alkyl with 1-18 carbon atoms, ester groups with 1-18 carbon atoms, naphthene bases with 5-12 carbon atoms, nitryl, sulfonyl, hydroxyl or aryl; and when the organic sulfonic acid ion has a structure shown as the f