Nonaqueous electrolyte and lithium secondary battery using the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-010/052
H01M-010/0569
H01M-010/0567
출원번호
US-0538548
(2012-06-29)
등록번호
US-9728805
(2017-08-08)
우선권정보
KR-10-2011-0065479 (2011-07-01)
발명자
/ 주소
Yu, Sung-Hoon
Yang, Doo Kyung
Jeon, Jong-Ho
Jou, Min-Jung
출원인 / 주소
LG CHEM, LTD.
대리인 / 주소
Birch, Stewart, Kolasch & Birch, LLP
인용정보
피인용 횟수 :
3인용 특허 :
3
초록
Disclosed are a nonaqueous electrolyte for a lithium secondary battery containing a hetero polycyclic compound and a lithium secondary battery using the same.
대표청구항▼
1. A lithium secondary battery, comprising: an electrode assembly having an anode, a cathode, and a separator interposed between the cathode and the anode; anda nonaqueous electrolyte injected into the electrode assembly, wherein the nonaqueous electrolyte is the nonaqueous electrolyte for a lithium
1. A lithium secondary battery, comprising: an electrode assembly having an anode, a cathode, and a separator interposed between the cathode and the anode; anda nonaqueous electrolyte injected into the electrode assembly, wherein the nonaqueous electrolyte is the nonaqueous electrolyte for a lithium secondary battery which includes an electrolyte salt and an organic solvent, anda polymeric film formed on the electrode assembly formed with a hetero polycyclic compound,wherein the nonaqueous electrolyte further includes the hetero polycyclic compound,wherein the hetero polycyclic compound is at least one type of compound expressed by Chemical Formulas 2 to 4 below: wherein X4, X5, X6, X7, X8, X9, X10, and X11 are independently a carbon atom or a nitrogen atom, where at least one of X4, X5, and X6 is nitrogen, and at least one of X7, X8, X9, X10 and X11 is nitrogen,provided that compounds wherein one of X4, X5, and X6, is nitrogen, and simultaneously one of X7, X8, X9, X10, and X11 is nitrogen are excluded, provided that compounds wherein X4, X6, X7, and X11 are nitrogen, and simultaneously X5, X8, X9, and X10 are carbon are excluded, and provided that compounds wherein three of X7, X8, X9, X10, and X11 are nitrogen are excluded,provided that compounds wherein all of X4, X5, X6, X7, X8, X9, X10, and X11 are carbon are excluded,wherein, in a case where X4, X5, X6, X7, X8, X9, X10, or X11 are carbon, R7, R9, R11, R12, R13, R14, R15 or R16 bonded thereto are independently a substituent selected from the group consisting of hydrogen atoms, alkyl groups having 1 to 6 carbon atoms, and alkoxy groups having 1 to 6 carbon atoms,wherein, in a case where X4, X5, X6, X7, X8, X9, X10, or X11 are nitrogen, R7, R9, R11, R12, R13, R14, R15 or R16 bonded thereto respectively represent an unshared electron pair,wherein R8 and R10 are independently a substituent selected from the group consisting of hydrogen atoms, alkyl groups having 1 to 6 carbon atoms, and alkoxy groups having 1 to 6 carbon atoms,wherein Y is a single bond, oxygen or sulfur, wherein X4, X5, X6, X7, X8, X9, and X10 are independently a carbon atom or a nitrogen atom, where at least one of X4 and X5 is nitrogen, and at least one of X6, X7, X8, X9 and X10 is nitrogen, provided that compounds wherein one of X4, and X5 is nitrogen, and simultaneously one of X6, X7, X8, X9, and X10 is nitrogen are excluded, and provided that compounds wherein three of X6, X7, X8, X9, and X10 are nitrogen are excluded, provided that compounds wherein all of X4, X5, X6, X7, X8, X9 and X10 are carbon are excluded,wherein X4, X5, X6, X7, X8, X9, or X10 are carbon, R7, R9, R12, R13, R14, R15 or R16 bonded thereto are independently a substituent selected from the group consisting of hydrogen atoms, alkyl groups having 1 to 6 carbon atoms, and alkoxy groups having 1 to 6 carbon atoms,wherein, in a case where X4, X5, X6, X7, X8, X9, or X10 are nitrogen, R7, R9, R12, R13, R14, R15 or R16 bonded thereto respectively represent an unshared electron pair,wherein R8, R10, and R11 are independently a substituent selected from the group consisting of hydrogen atoms, alkyl groups having 1 to 6 carbon atoms, and alkoxy groups having 1 to 6 carbon atoms,wherein Y is a single bond, oxygen or sulfur, wherein X4, X5, X6, X7, X8, and X9 are independently a carbon atom or a nitrogen atom, where at least one of X4 and X5 is nitrogen, and at least one of, X6, X7, X8, and X9 is nitrogen,provided that compounds wherein all of X4 and X5 are nitrogen, and simultaneously all of X6 and X9 are nitrogen are excluded, and provided that compounds wherein all of X4, X5, X6, X7, X8 and X9 are carbon are excluded,wherein, in a case where X4, X5, X6, X7, X8, or X9 are carbon, R7, R9, R10, R11, R12 or R13 bonded thereto are independently a substituent selected from the group consisting of hydrogen atoms, alkoxy groups having 1 to 6 carbon atoms, and alkoxy groups having 1 to 6 carbon atoms,wherein, in a case where X4, X5, X6, X7, X8, or X9 are nitrogen, R7, R9, R10, R11, R12 or R13 bonded thereto respectively represent an unshared electron pair, andwherein R8 and R14 are independently a substituent selected from the group consisting of hydrogen atoms, alkyl groups having 1 to 6 carbon atoms, and alkoxy groups having 1 to 6 carbons,wherein the cathode has a cathode layer which includes a lithium-containing oxide,wherein the lithium-containing oxide is a lithium-containing transition metal oxide, andwherein the lithium-containing transition metal oxide is selected from the group consisting of LiCoO2, LiNiO2, LiMnO2, LiMn2O4, Li(NiaCobMnc)O2 (0
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이 특허에 인용된 특허 (3)
Tsutsumi Masami,JPX ; Horiuchi Hiroshi,JPX ; Watanabe Isao,JPX ; Miyashita Tsutomu,JPX, Electrolytic solution for lithium secondary battery and lithium secondary battery using the same.
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