Patent number: 11367902
Abstract: A lithium secondary battery including a cathode; an anode; and an electrolyte disposed between the cathode and the anode, wherein the cathode includes a cathode active material represented by Formula 1, the electrolyte includes a lithium salt; a non-aqueous solvent; and a monofluorosilane compound represented by Formula 2, wherein an amount of the monofluorosilane compound is in a range of about 0.1 percent by weight (wt %) to about 5 wt % based on the total weight of the electrolyte wherein, in Formula 1, 0.9?x?1.2, 0.85<y?0.95, and 0?z<0.2; M is aluminum, magnesium, manganese, cobalt, iron, chromium, vanadium, titanium, copper, boron, calcium, zinc, zirconium, niobium, molybdenum, strontium, antimony, tungsten, bismuth, or a combination thereof; A is an element having an oxidation number of ?1 or ?2, and R1 is a substituted or unsubstituted linear or branched C2-C30 alkyl group or a substituted or unsubstituted C6-C60 aryl group.
Type:
Grant
Filed:
December 11, 2019
Date of Patent:
June 21, 2022
Assignees:
SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO., LTD.
Inventors:
Basab Roy, Myongchun Koh, Dongyoung Kim, Eunha Park
Patent number: 10547085
Abstract: A lithium secondary battery including a cathode; an anode; and an electrolyte disposed between the cathode and the anode, wherein the cathode includes a cathode active material represented by Formula 1, the electrolyte includes a lithium salt; a non-aqueous solvent; and a monofluorosilane compound represented by Formula 2, wherein an amount of the monofluorosilane compound is in a range of about 0.1 percent by weight (wt %) to about 5 wt % based on the total weight of the electrolyte wherein, in Formula 1, 0.9?x?1.2, 0.85<y?0.95, and 0?z<0.2; M is aluminum, magnesium, manganese, cobalt, iron, chromium, vanadium, titanium, copper, boron, calcium, zinc, zirconium, niobium, molybdenum, strontium, antimony, tungsten, bismuth, or a combination thereof; A is an element having an oxidation number of ?1 or ?2, and R1 is a substituted or unsubstituted linear or branched C2-C30 alkyl group or a substituted or unsubstituted C6-C60 aryl group.
Type:
Grant
Filed:
April 18, 2017
Date of Patent:
January 28, 2020
Assignees:
SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO., LTD.
Inventors:
Basab Roy, Myongchun Koh, Dongyoung Kim, Eunha Park