KR101606898B1 - 유연한 리튬 이차전지 및 제조방법 - Google Patents
유연한 리튬 이차전지 및 제조방법 Download PDFInfo
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- KR101606898B1 KR101606898B1 KR1020140039982A KR20140039982A KR101606898B1 KR 101606898 B1 KR101606898 B1 KR 101606898B1 KR 1020140039982 A KR1020140039982 A KR 1020140039982A KR 20140039982 A KR20140039982 A KR 20140039982A KR 101606898 B1 KR101606898 B1 KR 101606898B1
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 67
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 239000002238 carbon nanotube film Substances 0.000 claims abstract description 89
- 239000007784 solid electrolyte Substances 0.000 claims abstract description 62
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- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
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- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 리튬 이차전지의 제조방법을 상세히 설명하기 위한 순서도이다.
도 3은 본 발명의 일 실시예에 따른 탄소나노튜브 필름의 제조공정을 도시한 모식도이다.
도 4는 본 발명의 일 실시예에 따른 제작된 탄소나노튜브 필름의 전자 현미경 사진이다.
도 5는 본 발명의 일 실시예에 따른 탄소나노튜브 필름에 실리콘 나노 입자가 포함된 전자현미경 사진이다.
도 6은 본 발명의 일 실시예에 따른 탄소나노튜브 필름의 유연성을 보여주는 사진이다.
도 7은 본 발명의 일 실시예에 따른 고체 전해질의 유연성을 보여주는 도면이다.
도 8은 본 발명의 일 실시예에 따른 탄소나노튜브 필름의 후처리에 따른 충방전 특성을 보여주는 그래프이다.
도 9는 본 발명의 일 실시예에 따른 리튬 이차전지를 보호하기 위한 보호막의 형상을 도시하고 있다.
도 10은 본 발명의 일 실시예에 따른 리튬 이차전지의 제조 방법을 이용하여 완성된 리튬 이차전지의 사진이다.
도 11은 본 발명의 일 실시예에 따른 섬유형 이차전지의 구조를 도시하고 있다.
도 12는 본 발명의 일 실시예에 따른 섬유형 탄소나노튜브를 이용한 섬유형 리튬 이차전지의 제조방법을 설명하기 위한 순서도 이다.
도 13은 본 발명의 일 실시예에 따른 탄소나노튜브 섬유의 전자현미경 사진이다.
도 14는 본 발명의 일 실시예에 따른 섬유형 리튬 이차전지의 제조방법을 이용하여 제조된 섬유형 리튬 이차전지의 사진이다.
Claims (22)
- 리튬 이차전지에 있어서,
탄소나노튜브 필름에 양극활물질을 포함시켜 생성된 양극재,
상기 양극재 상에 적층된 고체 전해질 및
상기 고체 전해질 상에 적층되고, 탄소나노튜브 필름 또는 탄소나노튜브 필름에 음극활물질을 포함시켜 생성된 음극재를 포함하되,
상기 탄소나노튜브 필름은 실리콘 나노 입자를 포함하는 것인
리튬 이차전지. - 제 1항에 있어서,
상기 고체 전해질은,
고분자와 리튬염 및 섬유웹의 복합체 형태의 전해질 또는 고분자 전해질로 구성된 것인 리튬 이차전지. - 제 2항에 있어서,
상기 섬유웹의 복합체 형태의 전해질은,
UV 가교가 가능한 Ethoxylated trimethylolpropane triacrylate (ETPTA) 고분자와 리튬염 혼합체로 구성된 것인 리튬 이차전지. - 제 1항에 있어서,
상기 리튬 이차전지는,
상기 양극재와 고체 전해질 및 음극재를 에워싸는 보호막을 더 포함하는 리튬 이차전지. - 섬유형 리튬 이차전지에 있어서,
음극재,
상기 음극재를 감싸는 고체 전해질 및
상기 고체 전해질을 감싸는 양극재를 포함하되,
상기 양극재는 탄소나노튜브 필름에 양극활물질을 포함시켜 생성된 것이고,
상기 음극재는 탄소나노튜브 필름 또는 음극활물질이 포함된 탄소나노튜브 필름에 꼬임을 주어 섬유형태로 생성된 것인 리튬 이차전지. - 제 6항에 있어서,
상기 고체 전해질은,
고분자 전해질 또는 고분자와 리튬염 및 섬유웹의 복합체 형태의 전해질로 구성된 것인 리튬 이차전지. - 제 7항에 있어서,
상기 섬유웹의 복합체 형태의 전해질은,
UV 가교가 가능한 Ethoxylated trimethylolpropane triacrylate (ETPTA) 고분자와 리튬염 혼합체로 구성된 것인 리튬 이차전지. - 제 6항에 있어서,
상기 섬유형 리튬 이차전지는,
양극재와 고체 전해질 및 음극재를 에워싸는 보호막을 더 포함하는 리튬 이차전지.
- 리튬 이차전지의 제조 방법에 있어서,
탄소나노튜브 필름에 양극활물질을 포함한 양극재를 형성하는 단계;
상기 양극재 상에 고체 전해질을 적층하는 단계;
상기 고체 전해질 상에 탄소나노튜브 필름 또는 탄소나노튜브 필름에 음극활물질을 포함한 음극재를 적층하는 단계를 포함하되,
상기 탄소나노튜브 필름은 실리콘 나노 입자를 포함하여 형성된 것인
리튬 이차전지 제조 방법. - 제 11항에 있어서,
상기 음극재를 적층하는 단계는,
상기 음극재의 탄소나노튜브 필름을 리튬염 혼합액에 담지한 후 경화시키는 단계를 더 포함하는 것인 리튬 이차전지 제조 방법. - 삭제
- 제 11항에 있어서,
상기 양극재를 적층하는 단계는,
상기 양극재의 탄소나노튜브 필름을 리튬염 혼합액에 담지한 후 경화시키는 단계를 더 포함하는 것인 리튬 이차전지 제조 방법. - 제 11항에 있어서,
양극재와 고체 전해질 및 음극재를 에워싸는 보호막을 형성하는 단계를 더 포함하는 리튬 이차전지 제조 방법. - 제 11항에 있어서,
상기 고체 전해질은,
고분자와 리튬염의 혼합체를 나노웹에 코팅하고,
상기 나노웹을 자외선으로 가교시켜 생성된 것인 리튬 이차전지 제조 방법. - 섬유형 리튬 이차전지의 제조 방법에 있어서,
섬유 형태의 음극재를 형성하는 단계;
상기 음극재를 고체 전해질로 감싸는 단계; 및
상기 고체 전해질을 양극활물질이 포함된 탄소나노튜브 필름으로 감싸는 단계를 포함하되,
상기 섬유 형태의 음극재를 형성하는 단계는,
탄소나노튜브 필름 또는 음극활물질이 포함된 탄소나노튜브 필름을 꼬아서 탄소나노튜브 섬유를 제작하는 단계 및
상기 탄소나노튜브 섬유를 도선에 코일 형태로 감아 음극재를 제작하는 단계를 포함하는 리튬 이차전지 제조 방법. - 제 17항에 있어서,
상기 음극재를 형성하는 단계는,
상기 음극재의 탄소나노튜브 섬유를 리튬염 혼합액에 담지한 후 경화시키는 단계를 더 포함하는 것인 리튬 이차전지 제조 방법. - 제 18항에 있어서,
상기 탄소나노튜브 섬유는, 리튬 이차 전지의 전극 용량을 향상시키기 위해서 실리콘 나노 입자를 포함하여 형성한 것인 리튬 이차전지 제조 방법. - 제 17항에 있어서,
상기 고체 전해질을 양극활물질이 포함된 탄소나노튜브 필름으로 감싸는 단계는
상기 양극활물질이 포함된 탄소나노튜브 필름을 리튬염 혼합액에 담지한 후 경화시키는 단계를 더 포함하는 것인 리튬 이차전지 제조 방법. - 제 17항에 있어서,
상기 고체 전해질은,
고분자와 리튬염의 혼합체를 나노웹에 코팅하고,
상기 나노웹을 자외선으로 가교시켜 생성된 것인 리튬 이차전지 제조 방법. - 제 17항에 있어서,
상기 양극활물질이 포함된 탄소나노튜브 필름, 고체 전해질 및 음극재를 에워싸는 보호막을 형성하는 단계를 더 포함하는 리튬 이차전지 제조 방법.
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