▎ 摘　　要

NOVELTY - A core-shell positive lithium supplement additive comprises a core component (10) and a cladding layer covering the core component. The cladding layer is an isolation conductive encapsulation layer (20). The core body contains a lithium-supplement material containing lithium-based compound (a) and/or lithium-based compound (b). USE - Core-shell positive electrode lithium supplement additive used as material of positive electrode for lithium ion battery (all claimed). ADVANTAGE - The core-shell positive electrode lithium additive has high working voltage and energy density, relatively small self-discharge level, no memory effect, no cadmium and other heavy metal element pollution, long cycle life and so on, and is safe and convenient for operation positive electrode the lithium-supplementing process to obtain more and more attention. The positive electrode or negative electrode for pre-replenishing lithium is a kind of effective method in order to further improve the energy density of the lithium ion battery. The current of the negative electrode negative electrode is too high, it cannot be stably stored for a long time, so as to increase the operation difficulty and production risk. The lithium additive is easy to be produced in large scale, and the common non-reversible capacity of lithium material positive electrode limited. DETAILED DESCRIPTION - A core-shell positive lithium supplement additive comprises a core component and a cladding layer covering the core component. The cladding layer is an isolation conductive encapsulation layer. The core body contains a lithium-supplement material containing lithium-based compound (a) of formula: Li2+cAcB'1-cor/and lithium-based compound (b) LiaXb, where c is 0-1, a and b are 1-3, A is nitrogen and/or phosphorus, B' is sulfur and/or oxygen, and X is fluorine, sulfur, nitrogen, boron, phosphorus, oxygen and/or selenium. INDEPENDENT CLAIMS are included for the following: preparation of the core-shell positive electrode lithium supplement additive; positive electrode lithium supplement additive; positive electrode material; positive electrode; and lithium battery. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the core-shell positive electrode lithium supplement additive. 10Core component of core-shell cathode lithium supplement additive 20Isolated conductive encapsulation layer