▎ 摘　　要

NOVELTY - Composite lithium supplementing agent comprises an inner core and an intermediate layer and a shell that are sequentially wrapped on the outer surface of the inner core, where inner core includes a lithium-replenishing material, the middle layer includes a carbon material, and the outer shell includes an ion-conducting polymer binder. USE - The supplementing agent is useful for anode of pole piece (claimed). ADVANTAGE - The composite lithium supplementing agent uses double-shell layer protection, which can effectively isolate lithium material and air, contact and adhesive, avoids the generation of impurity gas and damage of the SEI film, solves the problem of agglomerant residual alkalinity of lithium material caused by the inactivation problem, ensures good contact/electrolyte interface, and improves the multiplying power performance and cycle performance of the battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation method of the composite lithium supplement agent.