▎ 摘　　要

NOVELTY - Cathode pre-lithiation reagent comprises a core particle (102) comprising lithium nitride (Li3N), and a passivation coating (104) uniformly disposed on at least a portion of a surface of the core particle. USE - Cathode pre-lithiation reagent for use in lithium-ion battery (claimed). ADVANTAGE - The inclusion of lithium nitride at the cathode as a sacrificial pre-lithiation reagent helps to improve energy density of the lithium-ion battery. Lithium nitride has a particularly high theoretical capacity relative to other common sacrificial pre-lithiation reagents, enables to obtain an equivalent release of Li+ ions during initial battery charging, for minimizing potential complications, and has a low theoretical decomposition potential, potentially allowing decomposition to proceed during battery charging without a cathode catalyst. The passivation precursor is selected to both protect the lithium nitride particles during processing and further enhance the overall battery performance by providing additional electrochemical advantages and/or facilitating lithium nitride decomposition to increase a rate of pre-lithiation during initial cycling of the lithium-ion battery. The Li3N particles are protected during battery manufacturing to provide maximal pre-lithiation of a lithium-ion battery including the passivated Li3N particles, for improving an overall electrochemical performance of the lithium-ion battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for; i. a lithium-ion battery, which comprises a cathode, comprising a lithiated cathode active material, a primary sacrificial pre-lithiation reagent composed of pure lithium nitride particles and a passivation coating uniformly disposed on surfaces of the primary sacrificial pre-lithiation reagent; a lithiated anode; and an electrolyte, where the cathode and the lithiated anode are immersed in the electrolyte, and the passivation coating segregates the primary sacrificial pre-lithiation reagent from the electrolyte; and ii. a method for passivating lithium nitride (Li3N). DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of passivated lithium nitride (Li3N) particles. 100Pre-lithiation reagent particle 102Core particle 104Passivation coating 106Thickness