Patent · US Active

Electrode assembly for secondary batteries and lithium secondary battery including the same

US9761865B2 · kind B2 · utility

1Cited by
0References
21Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 17, 2014
Grant dateSep 12, 2017
Priority date
Expiry dateSep 18, 2035

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02T10/70
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

Disclosed are an electrode assembly for secondary batteries and a lithium secondary battery including the same. More particularly, an electrode assembly including a cathode, an anode and a separator, wherein the cathode includes a lithium cobalt-based oxide, and a lithium nickel-based composite oxide forming a coating layer over a surface of the lithium nickel-based composite oxide by reacting with a fluorine-containing polymer, as a cathode active material, the anode includes carbon and a silicon oxide as an anode active material, an operating voltage is 2.50 V to 4.35 V, and the cathode active material has high rolling density by a bimodal form in which an average diameter of the cobalt-based oxide and an average diameter of the lithium nickel-based composite oxide are different, and a lithium secondary battery including the same are disclosed. In addition, an electrode assembly including a lithium cobalt-based oxide surface-coated with alumina (Al2O3), and a lithium secondary battery including the same are disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.