KR101669215B1 - 리튬 전지용 전해질막, 이를 이용한 리튬 전지 및 그 제조방법 - Google Patents
리튬 전지용 전해질막, 이를 이용한 리튬 전지 및 그 제조방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 다른 실시형태에 따른 리튬 전지용 전해질막 중의 금속-유기 골격 구조체가 유기 링커에 의해 화학 결합되어 있는 형태를 나타내는 개략도이다.
도 3은 도 2의 화학 결합의 구체적인 일 예를 나타낸다.
도 4는 실시예 1, 2 및 비교예 1에 따른 리튬 전지용 전해질막의 TGA 분석결과를 나타내는 그래프이다.
도 5은 실시예 3, 5에 따른 리튬 전지용 전해질막의 TGA 분석결과를 나타내는 그래프이다.
도 6은 실시예 5에 따른 리튬 전지용 전해질막의 리튬 이온 전도도를 나타내는 그래프이다.
도 7은 비교예 1에 따른 리튬 전지용 전해질막의 리튬 이온 전도도를 나타내는 그래프이다.
Claims (19)
- 아크릴레이트계 모노머 또는 올리고머의 중합체로 이루어진 매트릭스, 및 상기 매트릭스 중에 분산되어 있는 금속-유기 골격 구조체(Metal-Organic Framework: MOF)를 포함하며,
상기 금속-유기 골격 구조체는 금속 이온 또는 금속 이온 클러스터가 유기 리간드와의 사이의 화학 결합으로 형성되고 기공의 평균직경이 0.5 내지 10nm인 다공성 결정성 화합물이고,
상기 금속 이온은 Zn2+, Ti4+, V4+, V3+, V2+, Y3+, Zr4+ 및 이들의 조합으로 구성된 군으로부터 선택된 1종 이상을 포함하고,
상기 유기 리간드는 방향족 디카르복실산, 방향족 트리카르복실산, 및 이들의 조합으로 구성된 군으로부터 선택된 1종 이상을 포함하고,
상기 금속-유기 골격 구조체는 리튬염 및 비수계 유기용매를 함유한 액체 전해질을 포함하는 리튬 전지용 전해질막. - 삭제
- 제1항에 있어서,
상기 금속-유기 골격 구조체는 상기 액체 전해질을 기공 내부에 포함하는 리튬 전지용 전해질막. - 제1항에 있어서,
상기 기공의 평균 직경은 0.5 내지 3nm인 리튬 전지용 전해질막. - 제1항에 있어서,
상기 아크릴레이트계 모노머 또는 올리고머는 폴리(에틸렌글리콜)디아크릴레이트(PEGDA), 폴리(프로필렌글리콜)디아크릴레이트(PPGDA), 폴리(에틸렌글리콜)디메트아크릴레이트(PEGDMA), 폴리(프로필렌글리콜)디메트아크릴레이트(PPGDMA), 폴리(에틸렌글리콜)우레탄 디아크릴레이트(poly(ethyleneglycol)urethane diacrylate), 폴리(에틸렌글리콜)우레탄 디메트아크릴레이트(poly(ethyleneglycol)urethane dimethacrylate), 폴리에스테르 디아크릴레이트(polyester diacrylate), 폴리에스테르 디메트아크릴레이트(polyester dimethacrylate), 폴리(에틸렌글리콜) 우레탄 트리아크릴레이트(poly(ethyleneglycol)urethane triacrylate), 폴리(에틸렌글리콜) 우레탄 트리메트아크릴레이트 (poly(ethyleneglycol)urethane trimethacrylate), 트리메틸올프로판 트리아크릴레이트(trimethylolpropane triacrylate), 트리메틸올프로판 트리메트아크릴레이트(trimethylolpropane trimethacrylate), 에톡시기로 치환된 트리메틸올프로판 트리아크릴레이트(trimethylolpropane triacrylate), 프로폭시기로 치환된 트리메틸올프로판 트리아크릴레이트(trimethylolpropane triacrylate), 글리세릴 트리아크릴레이트(glyceryl triacrylate), 글리세릴 트리메트아크릴레이트(glyceryl trimethacrylate), 테트라메틸올프로판 테트라아크릴레이트(tetramethylolpropane tetraacrylate) 또는 디트리메틸올프로판 테트라아크릴레이트(di(trimethylolpropane) tetraacrylate)를 포함하는 리튬 전지용 전해질막. - 삭제
- 삭제
- 제1항에 있어서,
상기 리튬염은 LiClO4, LiCF3SO3, LiBF4, LiN(CF3SO2)2, LiPF6, LiAsF6, LiSbF6및 LiPF3(CF2CF3)3으로 구성된 군으로부터 선택된 1종 이상인 리튬 전지용 전해질막. - 제1항에 있어서,
상기 비수계 유기용매는 에틸렌 카보네이트, 프로필렌 카보네이트, 부틸렌 카보네이트, 디메틸 카보네이트, 디에틸 카보네이트, 1-불화에틸렌카보네이트, 술포란, 1, 3-디옥산, 및 감마 부티로락톤으로 구성된 군으로부터 선택된 1종 이상인 리튬 전지용 전해질막. - 양극; 음극; 및 전해질을 포함하고,
상기 전해질은, 아크릴레이트계 모노머 또는 올리고머의 중합체로 이루어진 매트릭스, 및 상기 매트릭스 중에 분산되어 있는 금속-유기 골격 구조체(Metal-Organic Framework)를 포함하며,
상기 금속-유기 골격 구조체는 금속 이온 또는 금속 이온 클러스터가 유기 리간드와의 사이의 화학 결합으로 형성되고 기공의 평균직경이 0.5 내지 10nm인 다공성 결정성 화합물이고,
상기 금속 이온은 Zn2+, Ti4+, V4+, V3+, V2+, Y3+, Zr4+ 및 이들의 조합으로 구성된 군으로부터 선택된 1종 이상을 포함하고,
상기 유기 리간드는 방향족 디카르복실산, 방향족 트리카르복실산, 및 이들의 조합으로 구성된 군으로부터 선택된 1종 이상을 포함하고,
상기 금속-유기 골격 구조체는 리튬염 및 비수계 유기용매를 함유한 액체 전해질을 포함하는 전해질막인 리튬 전지. - 삭제
- 제10항에 있어서,
상기 금속-유기 골격 구조체는 상기 액체 전해질을 기공 내부에 포함하는 리튬 전지. - 제10항에 있어서,
상기 기공의 평균 직경은 0.5 내지 3nm인 리튬 전지. - 제10항에 있어서,
상기 아크릴레이트계 모노머 또는 올리고머는 폴리(에틸렌글리콜)디아크릴레이트(PEGDA), 폴리(프로필렌글리콜)디아크릴레이트(PPGDA), 폴리(에틸렌글리콜)디메트아크릴레이트(PEGDMA), 폴리(프로필렌글리콜)디메트아크릴레이트(PPGDMA), 폴리(에틸렌글리콜)우레탄 디아크릴레이트(poly(ethyleneglycol)urethane diacrylate), 폴리(에틸렌글리콜)우레탄 디메트아크릴레이트(poly(ethyleneglycol)urethane dimethacrylate), 폴리에스테르 디아크릴레이트(polyester diacrylate), 폴리에스테르 디메트아크릴레이트(polyester dimethacrylate), 폴리(에틸렌글리콜) 우레탄 트리아크릴레이트(poly(ethyleneglycol)urethane triacrylate), 폴리(에틸렌글리콜) 우레탄 트리메트아크릴레이트 (poly(ethyleneglycol)urethane trimethacrylate), 트리메틸올프로판 트리아크릴레이트(trimethylolpropane triacrylate), 트리메틸올프로판 트리메트아크릴레이트(trimethylolpropane trimethacrylate), 에톡시기로 치환된 트리메틸올프로판 트리아크릴레이트(trimethylolpropane triacrylate), 프로폭시기로 치환된 트리메틸올프로판 트리아크릴레이트(trimethylolpropane triacrylate), 글리세릴 트리아크릴레이트(glyceryl triacrylate), 글리세릴 트리메트아크릴레이트(glyceryl trimethacrylate), 테트라메틸올프로판 테트라아크릴레이트(tetramethylolpropane tetraacrylate) 또는 디트리메틸올프로판 테트라아크릴레이트(di(trimethylolpropane) tetraacrylate)를 포함하는 리튬 전지. - 삭제
- 삭제
- 금속-유기 골격 구조체(Metal-Organic Framework:MOF)를 준비하는 단계;
상기 금속-유기 골격 구조체, 아크릴레이트계 모노머 또는 올리고머, 및 용매를 혼합하여 혼합물을 형성하는 단계;
상기 혼합물을 기재상에 코팅하는 단계;
상기 코팅을 가열 또는 활성선을 조사하고 중합하여 막을 형성하는 단계; 및
상기 형성된 막에 리튬염 및 비수계 유기용매를 함침하는 단계;
를 포함하는 제1항에 따른 리튬 전지용 전해질막의 제조방법. - 제17항에 있어서,
상기 아크릴레이트계 모노머 또는 올리고머는
폴리(에틸렌글리콜)디아크릴레이트(PEGDA), 폴리(프로필렌글리콜)디아크릴레이트(PPGDA), 폴리(에틸렌글리콜)디메트아크릴레이트(PEGDMA), 폴리(프로필렌글리콜)디메트아크릴레이트(PPGDMA), 폴리(에틸렌글리콜)우레탄 디아크릴레이트(poly(ethyleneglycol)urethane diacrylate), 폴리(에틸렌글리콜)우레탄 디메트아크릴레이트(poly(ethyleneglycol)urethane dimethacrylate), 폴리에스테르 디아크릴레이트(polyester diacrylate), 폴리에스테르 디메트아크릴레이트(polyester dimethacrylate), 폴리(에틸렌글리콜) 우레탄 트리아크릴레이트(poly(ethyleneglycol)urethane triacrylate), 폴리(에틸렌글리콜) 우레탄 트리메트아크릴레이트 (poly(ethyleneglycol)urethane trimethacrylate), 트리메틸올프로판 트리아크릴레이트(trimethylolpropane triacrylate), 트리메틸올프로판 트리메트아크릴레이트(trimethylolpropane trimethacrylate), 에톡시기로 치환된 트리메틸올프로판 트리아크릴레이트(trimethylolpropane triacrylate), 프로폭시기로 치환된 트리메틸올프로판 트리아크릴레이트(trimethylolpropane triacrylate), 글리세릴 트리아크릴레이트(glyceryl triacrylate), 글리세릴 트리메트아크릴레이트(glyceryl trimethacrylate), 테트라메틸올프로판 테트라아크릴레이트(tetramethylolpropane tetraacrylate) 또는 디트리메틸올프로판 테트라아크릴레이트(di(trimethylolpropane) tetraacrylate)를 포함하는 리튬 전지용 전해질막의 제조방법. - 제17항에 있어서,
상기 금속-유기 골격 구조체 및 상기 아크릴레이트계 모노머 또는 올리고머의 중량비는 1: 0.5 내지 1: 1인 리튬 전지용 전해질막의 제조방법.
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