This product is suitable for power battery systems such as lithium iron phosphate/high nickel ternary@silicon oxygen/silicon carbon, and also for 3C battery systems such as lithium cobalt oxide@silicon oxygen. It is added to the positive electrode material as a lithium supplement additive.Sufficient lithium is released during the first charging process to make up for the loss of lithium in the negative electrode, thereby increasing the energy density of the battery and improving cycle performance.