▎ 摘　　要

NOVELTY - Lithium replenishing agent suitable for high voltage anode, is claimed. USE - The lithium supplementing agent is useful for high voltage anode. ADVANTAGE - The lithium supplement agent can supplement the capacity of the lithium ion battery in the initial cycle, and also can supplement long-term cyclic irreversible capacity loss, improve the available capacity of the battery after multiple cycles, and greatly prolong the service life and efficiency of the lithium voltage positive electrode. The method is simple and easy, it is safe and pollution-free, the cost of the device and post-processing is small, and it is adapted to the battery production process, and is suitable for large scale amplification and can be quickly put into use. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparation method of lithium supplement; and replenishing lithium in a lithium-ion battery,.