▎ 摘　　要

NOVELTY - Cyano group-containing chain-shaped lithium supplement compound (I) is new. USE - (I) is useful as anode in lithium-ion batteries (claimed). ADVANTAGE - (I): has OLi group, which is used for lithium supplementation in lithium-ion batteries, cyano group, which enters the electrolyte and plays role after lithium supplementation, and cyano group has strong complexation with the transition metal in the anode material, and thus forming film on the surface of the anode of the lithium-ion battery, inhibits the dissolution of transition metal ions and protecting the anode. The method: is simple, has clear lithium supplementation process, because contains 3-OLi groups, and thus lithium supplementation is more efficient; provide lithium supplementation reaction after electrification, and the prepared product after the lithium supplementation reaction has no adverse effect on the battery, and can be used as an electrolyte additive. DETAILED DESCRIPTION - Cyano group-containing chain-shaped lithium supplement compound of formula (I) is new. n = 0-5. INDEPENDENT CLAIMS are also included for: Preparation of (I); and Lithium-ion battery comprising anode, cathode and non-aqueous lithium-ion battery electrolyte, where the anode contains chain-shaped lithium supplement compound (I).