KR101279409B1 - 케이블형 이차전지 - Google Patents
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Abstract
이러한 케이블형 이차전지는 선형의 구조를 가지면서 동시에 가요성을 갖고 있어 변형이 자유롭다. 파이프형의 외부전극 내부에 복수개의 내부전극을 구비하여 접촉면적이 증가하므로 높은 전지 레이트를 갖는다. 또한, 내부전극의 개수를 조절하여 내부전극과 외부전극과의 용량 밸런스의 조절이 용이하고, 내부전극에 전해질층이 형성되어 있어 단락(short)을 방지할 수 있다.
Description
도 1은 일 실시예에 따른 원형의 케이블형 이차전지의 단면도이다.
도 2는 일 실시예에 따른 타원형의 케이블형 이차전지의 단면도이다.
20 : 외부전극의 집전체 21 : 외부전극의 활물질층
30 : 전해질층 40 : 보호피복
Claims (17)
- 수평 단면을 가지고, 길이 방향으로 연장되며, 서로 이격되어 평행하게 배치되는 2 이상의 음극 및 상기 2 이상의 음극의 외면을 각각 둘러싸며 형성되고, 이온의 통로가 되는 전해질층을 포함하는 내부전극;
상기 내부전극을 둘러싸며 충진된 양극 활물질층을 포함하는 양극인 외부전극; 및
상기 외부전극의 둘레에 배치되는 보호피복을 포함하고,
상기 전해질층이 외면에 각각 형성된 2 이상의 음극이, 상기 양극 활물질층에 서로 이격되어 매설되는 케이블형 이차전지. - 수평 단면을 가지고, 길이 방향으로 연장되며, 서로 이격되어 평행하게 배치되는 2 이상의 양극 및 상기 2 이상의 양극의 외면을 각각 둘러싸며 형성되고, 이온의 통로가 되는 전해질층을 포함하는 내부전극;
상기 내부전극을 둘러싸며 충진된 음극 활물질층을 포함하는 음극인 외부전극; 및
상기 외부전극의 둘레에 배치되는 보호피복을 포함하고,
상기 전해질층이 외면에 각각 형성된 2 이상의 양극이, 상기 음극 활물질층에 서로 이격되어 매설되는 케이블형 이차전지. - 제 1항 또는 제 2항에 있어서,
상기 음극의 단면은 원형 또는 다각형인 것을 특징으로 하는 케이블형 이차전지. - 제 1항 또는 제 2항에 있어서,
상기 양극의 단면은 원형 또는 다각형인 것을 특징으로 하는 케이블형 이차전지. - 제 1항 또는 제 2항에 있어서,
상기 음극은 집전체 및 상기 집전체의 외면에 음극 활물질층을 구비한 것을 특징으로 하는 케이블형 이차전지. - 제 5항에 있어서,
상기 집전체는 스테인리스스틸, 알루미늄, 니켈, 티탄, 소성탄소, 구리; 스테인리스스틸의 표면에 카본, 니켈, 티탄, 은으로 표면처리한 것; 알루미늄-카드뮴합금; 도전재로 표면처리된 비전도성 고분자; 또는 전도성 고분자;로 제조된 것을 특징으로 하는 케이블형 이차전지. - 제 6항에 있어서,
상기 도전재는 폴리아세틸렌, 폴리아닐린, 폴리피롤, 폴리티오펜 및 폴리설퍼니트리드, ITO(Indum Thin Oxide), 은, 팔라듐, 니켈 및 구리 중에서 선택된 1종 또는 2종 이상의 혼합물인 것을 특징으로 하는 케이블형 이차전지. - 제 6항에 있어서,
상기 전도성 고분자는 폴리아세틸렌, 폴리아닐린, 폴리피롤, 폴리티오펜 및 폴리설퍼니트리드 중에서 선택된 1종의 화합물 또는 2종 이상의 혼합물인 고분자인 것을 특징으로 하는 케이블형 이차전지. - 제 5항에 있어서,
상기 음극 활물질층은 탄소질재료; 리튬 함유 티타늄 복합 산화물(LTO); Si, Sn, Li, Zn, Mg, Cd, Ce, Ni, Fe인 금속류(Me); 상기 금속류(Me)로 구성된 합금류; 상기 금속류(Me)의 산화물(MeOx); 및 상기 금속류(Me)와 탄소와의 복합체;로 이루어진 군으로부터 선택된 어느 하나의 활물질 입자 또는 이들 중 2종 이상의 혼합물을 포함하는 활물질로 이루어진 것을 특징으로 하는 케이블형 이차전지. - 제 1항에 또는 제 2항에 있어서,
상기 양극은 집전체 및 상기 집전체의 내면에 양극 활물질층을 구비한 것을 특징으로 하는 케이블형 이차전지. - 제 10항에 있어서,
상기 집전체는 스테인리스스틸, 알루미늄, 니켈, 티탄, 소성탄소, 구리; 스테인리스스틸의 표면에 카본, 니켈, 티탄, 은으로 표면처리한 것; 알루미늄-카드뮴합금; 도전재로 표면처리된 비전도성 고분자; 또는 전도성 고분자;로 제조된 것을 특징으로 하는 케이블형 이차전지. - 제 11항에 있어서,
상기 도전재는 폴리아세틸렌, 폴리아닐린, 폴리피롤, 폴리티오펜 및 폴리설퍼니트리드, ITO(Indum Thin Oxide), 은, 팔라듐, 니켈 및 구리 중에서 선택된 1종 또는 2종 이상의 혼합물인 것을 특징으로 하는 케이블형 이차전지. - 제 11항에 있어서,
상기 전도성 고분자는 폴리아세틸렌, 폴리아닐린, 폴리피롤, 폴리티오펜 및 폴리설퍼니트리드 중에서 선택된 1종의 화합물 또는 2종 이상의 혼합물인 고분자인 것을 특징으로 하는 케이블형 이차전지. - 제 10항에 있어서,
상기 양극 활물질층은 LiCoO2, LiNiO2, LiMn2O4, LiCoPO4, LiFePO4, LiNiMnCoO2 및 LiNi1-x-y-zCoxM1yM2zO2(M1 및 M2는 서로 독립적으로 Al, Ni, Co, Fe, Mn, V, Cr, Ti, W, Ta, Mg 및 Mo로 이루어진 군으로부터 선택된 어느 하나이고, x, y 및 z는 서로 독립적으로 산화물 조성 원소들의 원자 분율로서 0 ≤ x < 0.5, 0 ≤ y < 0.5, 0 ≤ z < 0.5, x+y+z ≤ 1임)로 이루어진 군으로부터 선택된 어느 하나의 활물질 입자 또는 이들 중 2종 이상의 혼합물을 포함하는 활물질로 이루어진 것을 특징으로 하는 케이블형 이차전지. - 제 1항 또는 제 2항에 있어서,
상기 전해질층은 PEO, PVdF, PMMA, PAN 또는 PVAC를 사용한 겔형 고분자 전해질; 또는 PEO, PPO(polypropylene oxide), PEI(polyethylene imine), PES(polyethyle sulphide) 또는 PVAc(polyvinyl acetate)를 사용한 고체 전해질; 중에서 선택된 전해질로 이루어진 것을 특징으로 하는 케이블형 이차전지. - 제 1항 또는 제 2항에 있어서,
상기 전해질층은 리튬염을 더 포함하는 것을 특징으로 하는 케이블형 이차전지. - 제 16항에 있어서,
상기 리튬염은 LiCl, LiBr, LiI, LiClO4, LiBF4, LiB10Cl10, LiPF6, LiCF3SO3, LiCF3CO2, LiAsF6, LiSbF6, LiAlCl4, CH3SO3Li, CF3SO3Li, (CF3SO2)2NLi, 클로로보란리튬, 저급지방족카르본산리튬 및 4페닐붕산리튬 중에서 선택된 1종 또는 2종 이상인 것을 특징으로 하는 케이블형 이차전지.
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PCT/KR2011/000580 WO2011093659A2 (ko) | 2010-02-01 | 2011-01-27 | 케이블형 이차전지 |
CN2011800049296A CN102652378A (zh) | 2010-02-01 | 2011-01-27 | 线缆型二次电池 |
JP2012549958A JP5465792B2 (ja) | 2010-02-01 | 2011-01-27 | ケーブル型二次電池 |
CN201611235258.5A CN106910936B (zh) | 2010-02-01 | 2011-01-27 | 线缆型二次电池 |
EP11737298.7A EP2533338B1 (en) | 2010-02-01 | 2011-01-27 | Cable type rechargeable battery |
US13/291,407 US9236629B2 (en) | 2010-02-01 | 2011-11-08 | Cable-type secondary battery |
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