Patent ID: 9525174
Filing Date: 2016-12-20
CPC Classification: H01M,Y02E

Claim Text:
1. A lithium ion battery comprising: a cathode comprising a cathode active material; an anode spaced from the cathode; and an electrolyte located between the cathode and the anode; wherein the cathode active material is a sulfur grafted poly(pyridinopyridine) consisting of a poly(pyridinopyridine) matrix and a plurality of sulfur molecules dispersed in the poly(pyridinopyridine) matrix, and a mass percentage of the plurality of sulfur molecules in the poly(pyridinopyridine) matrix is equal to or smaller than 41%; the electrolyte is a gel electrolyte consisting of a polymer substrate defining a plurality of pores, an organic solvent, a metal lithium salt dissolved in the organic solvent, and an inorganic filler dispersed in the polymer substrate, and the organic solvent with the metal lithium salt dissolved therein fills the plurality of pores of the polymer substrate; and a material of the polymer substrate is copolymer of vinylidene fluoride-hexafluoropropylene, a material of the metal lithium salt is LiPF