▎ 摘　　要

NOVELTY - Anode active material comprises an amount of solid-electrolyte interphase (SEI) on a surface or in an internal structure of the anode active material, where the SEI is pre-formed prior to incorporating the anode active material in an anode electrode of lithium ion battery, and the anode active material is capable of reversibly storing lithium ions in its up to a maximum lithium storage capacity Cmax during a charge or discharge of lithium ion battery. USE - The material is useful in a lithium ion battery, mass of anode active material powder, anode electrode, and particulate (all claimed). ADVANTAGE - The material utilizes: cathode active material that has a high theoretical capacity (170 mAh/g), environmental benignity, low resource cost, good cycling stability, high temperature capability, and prospect for a safer cell; electrolyte that improve both the capacity and cycle life of the battery; and non-aqueous solvent that is stable against a negative electrode containing a carbonaceous material well developed in graphite structure, effective in suppressing the reductive or oxidative decomposition of electrolyte and high in conductivity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (a) a mass of anode active material powder; (b) an anode electrode; (c) a lithium-ion battery; (d) a particulate; and (e) producing multiple anode active material particles, comprising (1) providing many particles of an anode active material, (2) introducing an amount of lithium ions into the particles to form prelithiated particles that each contains SEI on a surface or in an internal structure of the particles, where the amount of lithium is 1-100% of Cmax, the maximum lithium content that can be contained in anode active material, (3) partially or fully de-lithiating the prelithiated particles by removing a desired amount of lithium from the prelithiated particles and (4) repeating step (2).