In order to overcome the problem that the existing high-pressure
lithium-
ion batteries have insufficient liquid retention and affect the battery cycle performance, the present invention provides a
lithium-
ion battery, including a positive
electrode, a negative
electrode, a glue-coated separator and a non-
aqueous electrolyte, wherein the positive
electrode includes a positive
electrode material layer, and the compaction density of the positive
electrode material layer is 3.3g / cc to 4.3g / cc, the negative electrode includes a negative
electrode material layer, and the compaction density of the negative electrode material layer is 1.55-1.85g / cc, the glue-coated separator includes a
porous substrate and a glue-coated layer arranged on at least one side of the
porous substrate, the glue-coated layer includes PVDF, and the non-
aqueous electrolyte includes a
solvent, an
electrolyte salt and a compound shown in
structural formula 1: wherein n=0-2; R 1‑(5+n) Each is independently selected from H,
halogen or C1-C10 substituted or unsubstituted
alkyl. The
lithium ion battery provided by the present invention has good liquid
retention capacity and effectively improves its high temperature cycle performance and
high temperature storage performance.