The invention discloses a preparation method for modified
barium titanate ceramics suitable for a super
capacitor, wherein the preparation method comprises the following steps: step a, auxiliary material preparation: selecting SnO2, CaCO3, BaCO3 and TiO2 and mixing evenly in proportion to obtain an auxiliary material mixture, putting the auxiliary material mixture in a
muffle furnace,
sintering for a first time, taking out the material, and crushing the material to obtain an auxiliary material, wherein the
granularity of the auxiliary material is 3-5 [mu]m; step b,
raw material preparation: selecting BaCO3 and TiO2 and mixing, then putting the mixture into the
muffle furnace,
sintering for a second time, and crushing the product after
sintering to obtain a
fine powder material; and step c,
raw material modification: selecting the auxiliary material and the
fine powder material and mixing, putting the mixture into the
muffle furnace, sintering for a third time, and crushing the product after sintering for the third time to obtain a finished product. The method has the beneficial effects that the process is simple, the cost is saved, fluctuation of the
dielectric coefficient is smooth along with temperature variation, the
granularity is relatively fine, and the stable
composite material is convenient to synthesize.