The present invention provides non-aqueous electrolyte solution for a lithium secondary battery, comprising an ester-based compound having a branched-chain alkyl group and an ester-based compound having a straight-chain alkyl group; and a lithium secondary battery using the same.

Claims

19 · 1 independent · depth 5

19 granted claims

›1.independentA non-aqueous electrolyte solution for a lithium secondary battery, comprising an electrolyte salt and an organic solvent, wherein the non-aqueous ele…+18

›2.↳ 1The non-aqueous electrolyte solution for a lithium secondary battery according to claim 1, wherein the volume mixing ratio (a:b) of the first ester-ba…d2

›3.↳ 1The non-aqueous electrolyte solution for a lithium secondary battery according to claim 1, wherein R1 is substituted or unsubstituted straight- or bra…d2

›4.↳ 1The non-aqueous electrolyte solution for a lithium secondary battery according to claim 1, wherein R1 is substituted or unsubstituted straight- or bra…d2

›5.↳ 1The non-aqueous electrolyte solution for a lithium secondary battery according to claim 1, wherein R1, R3 and R4 are methyl, ethyl, propyl or butyl, a…d2

›6.↳ 1The non-aqueous electrolyte solution for a lithium secondary battery according to claim 1, wherein the first ester-based compound is at least one sele…d2

›7.↳ 1The non-aqueous electrolyte solution for a lithium secondary battery according to claim 1, wherein the electrolyte salt is a lithium salt.d2+1

›9.↳ 1The non-aqueous electrolyte solution for a lithium secondary battery according to claim 1, wherein the organic solvent is selected from the group cons…d2+3

›13.↳ 1The non-aqueous electrolyte solution for a lithium secondary battery according to claim 1, which further comprises any one selected from the group con…d2

›14.↳ 1A lithium secondary battery comprising an electrode assembly consisting of a cathode, an anode and a separator interposed therebetween, and a non-aque…d2+5

Classifications

9 codes

IPC · International Patent Classification

Section H — Electricity

H01M10/0569
H01M10/052
H01M10/056

USPC · US Patent Classification

429/332429/338429/330429/188429/339429/333

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Pendency

1.5 y

552 days filing → grant

Office actions

non-final + final

Responses

1 RCE

Examiner

Nicholas P D'Aniello

art unit 1723 · TC 1700

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20130295468 A1	7 Nov 2013

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