In the capacitive energy storage pulse power supply

the energy storage density of the pulse capacitor directly affects the miniaturization development of the pulse power supply and the pulse power system. At present

the dielectric material of pulse capacitors mostly adopts biaxially oriented polypropylene film（BOPP）and its energy storage density is difficult to be improved further. It is therefore necessary to study a new type of capacitor energy storage material to improve the energy storage density of the capacitor.In this paper

the energy storage dielectrics for capacitors are taken as the study object. The electrical performance parameters of such three new energy storage dielectrics as polymer-based inorganic nanocomposite dielectrics（PVDF/TiO2）

polymer-based all-organic composite dielectrics（PVDF/PP）and high dipole moment amorphous polymers（ArPU）are compared. Moreover

their DE curves are tested and plotted and their discharge efficiency is studied with BOPP as reference. It is shown by the test result that the discharge efficiency of the three new energy storage dielectrics increase with the increase of frequency.