# US 12,119,450 B2 · Non-aqueous electrolyte and lithium secondary battery including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,119,450 B2 - Document ID: US12119450B2 - Status: Granted - Kind: B2 - Application number: 17/614,041 - Filed: 2020-08-25 - Published: 2022-07-21 - Granted: 2024-10-15 - Earliest claimed: 2019-08-30 - Assignees: LG Energy Solution, Ltd. - Applicants: LG Energy Solution, Ltd. - Inventors: Jeong Woo Oh; Hyung Tae Kim; Chul Haeng Lee - Web page: https://patentgrep.com/patent/US12119450B2 ## CPC - H01M 10/0567: characterised by the additives - H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx - H01M 4/134: Electrodes based on metals, Si or alloys - H01M 4/364: {as mixtures} - H01M 4/386: {Silicon or alloys based on silicon} - H01M 4/483: {for non-aqueous cells (H01M4/485 takes precedence)} - H01M 4/525: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy - H01M 4/587: for inserting or intercalating light metals - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 10/4235: {Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence)} - H01M 2300/0025: Organic electrolyte - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A non-aqueous electrolyte and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte includes an organic solvent, a lithium salt, and an additive, wherein the additive includes a compound represented by Formula I and a compound represented by Formula II wherein, in Formula I, R1 is an alkylene group having 1 to 4 carbon atoms, and wherein, in Formula II, R2, R3, and R4 are each independently a fluorine atom or a fluorine-substituted alkyl group having 1 to 10 carbon atoms. ## Claims ### Claim 1 A non-aqueous electrolyte, comprising: an organic solvent; a lithium salt; and an additive, wherein the additive comprises a compound represented by Formula I and a compound represented by Formula II wherein, in Formula I, R1 is an alkylene group having 1 to 4 carbon atoms wherein, in Formula II, R2, R3, and R4 are each independently a fluorine atom or a fluorine-substituted alkyl group having 1 to 10 carbon atoms, and wherein the additive further comprises a silane-based compound. ### Claim 2 (depends on 1) The non-aqueous electrolyte of claim 1, wherein the compound represented by Formula I is a compound represented by Formula I-1 ### Claim 3 (depends on 1) The non-aqueous electrolyte of claim 1, wherein the compound represented by Formula II is a compound represented by Formula II-1 ### Claim 4 (depends on 1) The non-aqueous electrolyte of claim 1, wherein the compound represented by Formula I is present in an amount of 0.5 wt % to 2 wt % based on a total weight of the non-aqueous electrolyte. ### Claim 5 (depends on 1) The non-aqueous electrolyte of claim 1, wherein the compound represented by Formula II is present in an amount of 0.5 wt % to 2 wt % based on a total weight of the non-aqueous electrolyte. ### Claim 6 (depends on 1) A lithium secondary battery, comprising: a positive electrode including a positive electrode active material; a negative electrode including a negative electrode active material; a separator disposed between the negative electrode and the positive electrode; and the non-aqueous electrolyte of claim 1. ### Claim 7 (depends on 6) The lithium secondary battery of claim 6, wherein the positive electrode active material is a lithium composite transition metal oxide having an amount of nickel of 50 atm % or more, based on the total amount of transition metals in the lithium composite transition metal oxide. ### Claim 8 (depends on 6) The lithium secondary battery of claim 6, wherein the positive electrode active material is a lithium composite transition metal oxide represented by Formula III Lix[NiyCozMnwM1v]O2-pAp [Formula III] wherein, in Formula III, M1 comprises at least one of tungsten (W), copper (Cu), iron (Fe), vanadium (V), chromium (Cr), titanium (Ti), zirconium (Zr), zinc (Zn), aluminum (Al), indium (In), tantalum (Ta), yttrium (Y), lanthanum (La), strontium (Sr), gallium (Ga), scandium (Sc), gadolinium (Gd), samarium (Sm), calcium (Ca), cerium (Ce), niobium (Nb), magnesium (Mg), boron (B), or molybdenum (Mo), A comprises at least one of fluorine (F), chlorine (C1), bromine (Br), iodine (I), astatine (At), or sulfur(S), and 0.8≤x≤1.2, 0.5≤y<1, 0