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    • 95. 发明公开
    • 케이블형 이차전지
    • 电缆型二次电池
    • KR1020140096249A
    • 2014-08-05
    • KR1020140079840
    • 2014-06-27
    • 주식회사 엘지화학
    • 권요한김효미김제영정혜란
    • H01M10/058H01M4/13H01M4/64H01M2/14H01M10/04
    • H01M10/0431H01M2/1606H01M2/18H01M4/13H01M4/131H01M4/133H01M4/134H01M4/136H01M4/661H01M4/662H01M4/663H01M4/666H01M4/668H01M4/669H01M4/75H01M4/765H01M10/0525H01M10/0587H01M2220/20H01M2220/30H01M2300/0025H01M2300/0085Y02E60/122H01M10/058H01M2/14H01M4/64H01M10/00H01M10/04
    • In the present invention, provided is a cable-type secondary battery extending in a longitudinal direction. The cable-type secondary battery comprises a lithium ion supply core unit including an electrolyte; an inside electrode support body having a hollow structure that surrounds the outer surface of the lithium ion supply core unit; an inside electrode formed on a surface of the inside electrode support body, and provided with an inside current collector and an inside electrode active material layer; a separation layer preventing a short circuit of an electrode surrounding the outer surface of the inside electrode; and an outside electrode surrounding the outer surface of the separation layer and provided with an outside electrode active material layer and an outside current collector. Since a lithium ion supply core unit including an electrolyte of the present invention is disposed inside an inside electrode support body, and the inside electrode support body has a hollow structure, such that the electrolyte of the lithium ion supply core unit easily permeates into an active material of an electrode to allow lithium ion supply and lithium ion replacement to be easily performed, and when a hollow fiber with high flexibility is used as an inside electrode support body, the flexibility of a battery can be further maximized.
    • 在本发明中,提供了沿长度方向延伸的电缆型二次电池。 电缆型二次电池包括含有电解质的锂离子供给芯单元, 具有围绕所述锂离子供给芯单元的外表面的中空结构的内部电极支撑体; 形成在所述内侧电极支撑体的表面上的内部电极,设置有内部集电体和内部电极活性物质层; 隔离层,其防止围绕所述内部电极的外表面的电极的短路; 以及围绕分离层的外表面的外部电极,并且设置有外部电极活性物质层和外部集电体。 由于包含本发明的电解质的锂离子供给芯单元设置在内侧电极支撑体的内部,内部电极支撑体具有中空结构,使得锂离子供给芯单元的电解质易于渗入活性物质 能够容易地进行锂离子供给和锂离子置换的电极材料,作为内部电极支撑体使用具有高柔性的中空纤维时,能够进一步提高电池的柔性。