Soft carbon anode material for lithium-ion power and energy storage battery as well as preparation method and application of soft carbon anode material

The invention provides a soft carbon anode material for a lithium-ion power and energy storage battery as well as a preparation method and application of the soft carbon anode material. According to the preparation method, a low-concentration purifying reagent and a mesophase carbon microsphere precursor are stirred and mixed, so as to enable the low-concentration purifying reagent to react with impurities to generate water-soluble substances, and the water-soluble substances are washed by purified water, so that the impurity content is reduced, the product purity is improved, the carbon content is greater than 99.3%, and the self-discharge rate is obviously reduced; through low-temperature carbonization, and through surface activation modification of a material by a lithium-containing compound and/ or an activating reagent, a dense film similar to an SEI (solid electrolyte interface) component is formed on the surface of the material, which facilitates the reduction of L consumed in the SEI film forming process during the charging and discharging process of the battery, thereby improving the initial coulombic efficiency and improving the cycle performance; the porosity is increased, lithium intercalating and de-intercalating active sites are increased, the capacity of the material is increased, and thus the energy density of the whole battery is increased.