Anti-ferroelectric high-energy-storage-density ceramic powder and preparation method thereof and capacitor containing anti-ferroelectric high-energy-storage-density ceramic powder

The invention provides anti-ferroelectric high-energy-storage-density ceramic powder. The chemical general formula of the anti-ferroelectric ceramic powder is (0-0.5)(Pb[1-X1]La[X1])(Zr[Y1]Sn[Y2]Ti[Y3]Mn[1-Y1-Y2-Y3])O[3]+(0.5-1)(Pb[1-X2]La[X2]) (Zr[1-Y2]Sn[Y2])O[3], wherein X1 is larger than or equal to 0.05 and less than or equal to 0.15, X2 is larger than or equal to 0.01 and less than or equal to 0.10; and Y1 is larger than or equal to 0.800 and less than or equal to 0.900, Y2 is larger than or equal to 0.01 and less than or equal to 0.05, Y3 is larger than or equal to 0.10 and less than or equal to 0.15, the phase change field is large, and the energy storage density is high. The invention also relates to a pulse capacitor prepared from the anti-ferroelectric high-energy-storage-density ceramic powder; application verification of the obtained pulse power capacitor shows that production of the large-current pulse power capacitor is achieved, the sintering temperature is low, and the discharging current is