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    Lithium secondary battery with improved energy density
    11.
    发明授权
    Lithium secondary battery with improved energy density 有权
    具有提高能量密度的锂二次电池

    公开(公告)号：US08703340B2

    公开(公告)日：2014-04-22

    申请号：US13201385

    申请日：2010-02-16

    Applicant: Hong Jeong Kim ,  Cha Hun Ku ,  Soo Ryoung Kim ,  Hong Kyu Park

    Inventor： Hong Jeong Kim ,  Cha Hun Ku ,  Soo Ryoung Kim ,  Hong Kyu Park

    IPC: H01M4/88 ,  H01M4/13 ,  H01M4/58

    CPC classification number: H01M10/052 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525

    Abstract: Provided is a lithium secondary battery with enhanced energy density including a cathode using a cathode active material containing lithium mixed transition metal oxide absorbing and discharging lithium ions, wherein a final discharge voltage is in the range of about 1.5 V to about 2.75 V. A final discharge voltage can be reduced to 1.5 V to 2.75 V from 3.0 V by using various lithium mixed transition metal oxides as a cathode active material, or by using the various lithium mixed transition metal oxides with the LCO-based cathode material mixed. Compared to typical LCO-based cathode materials of which capacity and energy density do not change even if a final discharge voltage is decreased, a cathode material of the present invention results in further improving capacity by 10-20% as the final discharge voltage is decreased.

    Abstract translation: 提供了具有增强的能量密度的锂二次电池，包括使用吸收和放出​​锂离子的锂混合过渡金属氧化物的阴极活性材料的阴极，其中最终放电电压在约1.5V至约2.75V的范围内。最终 通过使用各种锂混合过渡金属氧化物作为正极活性物质，或通过混合各种锂混合过渡金属氧化物与LCO-阴极材料混合，放电电压可以从3.0V降低至1.5V至2.75V。 与其最终放电电压降低时容量和能量密度也不变化的典型的LCO阴极材料相比，本发明的阴极材料随着最终放电电压的降低而进一步提高10-20％的容量 。

    Cap assembly comprising gasket prevented from sagging and cylindrical secondary battery comprising the same
    13.
    发明授权
    Cap assembly comprising gasket prevented from sagging and cylindrical secondary battery comprising the same 有权
    盖组件包括垫圈防止下垂

    公开(公告)号：US08420257B2

    公开(公告)日：2013-04-16

    申请号：US12861334

    申请日：2010-08-23

    Applicant: Sung Jong Kim ,  Je Jun Lee ,  Cha Hun Ku

    Inventor： Sung Jong Kim ,  Je Jun Lee ,  Cha Hun Ku

    IPC: H01M2/10 ,  H01M2/12

    CPC classification number: H01M2/0413 ,  H01M2/1241 ,  H01M2/34 ,  H01M2200/106

    Abstract: A cap assembly is provided. The cap assembly comprises a main gasket surrounding the outer circumference of a safety vent and an auxiliary gasket surrounding the outer circumference of a current interrupt device (CID). The main gasket is supported by the auxiliary gasket, leaving no space between the main gasket and the safety vent. The cap assembly is constructed such that the auxiliary gasket prevents the main gasket seated on a beading portion from sagging. This construction makes the cap assembly effective in preventing an electrolyte from leaking. Further provided is a cylindrical secondary battery comprising the cap assembly.

    Abstract translation: 提供盖组件。 盖组件包括围绕安全通风口的外圆周的主衬垫和围绕当前中断装置（CID）的外圆周的辅助衬垫。 主垫片由辅助垫圈支撑，主垫片和安全排气孔之间不留空间。 盖组件被构造成使得辅助衬垫防止坐在卷边部分上的主衬垫下垂。 这种结构使盖组件有效地防止电解液泄漏。 还提供了一种包括盖组件的圆柱形二次电池。

    Binder with good rate property and long cycleability for lithium secondary battery
    14.
    发明授权
    Binder with good rate property and long cycleability for lithium secondary battery 有权
    锂二次电池具有良好的性能和循环性能好的粘合剂

    公开(公告)号：US08277976B2

    公开(公告)日：2012-10-02

    申请号：US11399718

    申请日：2006-04-07

    Applicant: Dong Jo Ryu ,  Cha Hun Ku ,  Chang Sun Han ,  Byoung Yun Kim ,  Ju Hyun Kim ,  Chang Wan Koo

    Inventor： Dong Jo Ryu ,  Cha Hun Ku ,  Chang Sun Han ,  Byoung Yun Kim ,  Ju Hyun Kim ,  Chang Wan Koo

    IPC: H01M4/62

    CPC classification number: H01M4/621 ,  H01M4/13 ,  H01M4/622 ,  H01M10/052 ,  H01M10/056

    Abstract: Disclosed is a binder, which comprises polymer particles obtained by polymerization of: (a) 1˜80 parts by weight of a (meth)acrylic acid ester monomer; (b) 1˜20 parts by weight of an unsaturated carboxylic acid monomer; and (c) 0.001˜40 parts by weight of a vinyl monomer, based on 100 parts by weight of the binder polymer, and which allows electrode active material particles capable of lithium intercalation/deintercalation to be fixed and linked among themselves, and between the particles and a collector. An electrode comprising the binder, and a lithium secondary battery having the electrode are also disclosed. Further, a method for evaluating interrelation between wettability of a binder to an electrolyte and quality of a battery comprising the binder is disclosed. The binder shows excellent adhesion as well as excellent wettability to an electrolyte, and thus can improve rate characteristics and lifespan characteristics of a battery, when used in an electrode for a lithium secondary battery.

    Abstract translation: 公开了一种粘合剂，其包含聚合物颗粒，所述聚合物颗粒通过聚合得到：（a）1〜80重量份的（甲基）丙烯酸酯单体; （b）1〜20重量份不饱和羧酸单体; 和（c）0.001〜40重量份的乙烯基单体，基于100重量份的粘合剂聚合物，并且其允许能够嵌入/脱嵌的电极活性材料颗粒彼此之间固定并连接 颗粒和收集器。 还公开了包含该粘合剂的电极和具有该电极的锂二次电池。 此外，公开了一种用于评估粘合剂对电解质的润湿性和包含粘合剂的电池质量之间的相互关系的方法。 粘合剂对于电解质显示出良好的粘附性和优异的润湿性，因此当用于锂二次电池的电极时，可以提高电池的速率特性和寿命特性。

    CAP ASSEMBLY COMPRISING GASKET PREVENTED FROM SAGGING AND CYLINDRICAL SECONDARY BATTERY COMPRISING THE SAME
    16.
    发明申请
    CAP ASSEMBLY COMPRISING GASKET PREVENTED FROM SAGGING AND CYLINDRICAL SECONDARY BATTERY COMPRISING THE SAME 有权
    包含垫圈的盖组件和包含该垫圈的圆柱形二次电池

    公开(公告)号：US20110086251A1

    公开(公告)日：2011-04-14

    申请号：US12861334

    申请日：2010-08-23

    Applicant: Sung Jong KIM ,  Je Jun Lee ,  Cha Hun Ku

    Inventor： Sung Jong KIM ,  Je Jun Lee ,  Cha Hun Ku

    IPC: H01M2/12 ,  H01M2/08

    CPC classification number: H01M2/0413 ,  H01M2/1241 ,  H01M2/34 ,  H01M2200/106

    Abstract: A cap assembly is provided. The cap assembly comprises a main gasket surrounding the outer circumference of a safety vent and an auxiliary gasket surrounding the outer circumference of a current interrupt device (CID). The main gasket is supported by the auxiliary gasket, leaving no space between the main gasket and the safety vent. The cap assembly is constructed such that the auxiliary gasket prevents the main gasket seated on a beading portion from sagging. This construction makes the cap assembly effective in preventing an electrolyte from leaking. Further provided is a cylindrical secondary battery comprising the cap assembly.

    Abstract translation: 提供盖组件。 盖组件包括围绕安全通风口的外圆周的主衬垫和围绕当前中断装置（CID）的外圆周的辅助衬垫。 主垫片由辅助垫圈支撑，主垫片和安全排气孔之间不留空间。 盖组件被构造成使得辅助衬垫防止坐在卷边部分上的主衬垫下垂。 这种结构使盖组件有效地防止电解液泄漏。 还提供了一种包括盖组件的圆柱形二次电池。

    DUAL SEALING CAP ASSEMBLY AND CYLINDRICAL SECONDARY BATTERY INCLUDING THE SAME
    17.
    发明申请
    DUAL SEALING CAP ASSEMBLY AND CYLINDRICAL SECONDARY BATTERY INCLUDING THE SAME 有权
    双密封盖组件和包括其的圆柱二次电池

    公开(公告)号：US20110076527A1

    公开(公告)日：2011-03-31

    申请号：US12872299

    申请日：2010-08-31

    Applicant: Sung Jong Kim ,  Je Jun Lee ,  Cha Hun Ku

    Inventor： Sung Jong Kim ,  Je Jun Lee ,  Cha Hun Ku

    IPC: H01M2/12

    CPC classification number: H01M2/1241 ,  H01M2/0413 ,  H01M2/34 ,  H01M2200/00 ,  H01M2200/106 ,  H01M2200/20

    Abstract: The present invention relates to a cap assembly and a battery including the same. More particularly, the present invention relates to a cap assembly for a cylindrical secondary battery, in which the support unit of a current interrupt device (CID) is seated in the inclined portion or the terraced portion of a gasket and thus the battery is dually sealed, thereby preventing the leakage of an electrolyte, and a cylindrical secondary battery including the cylindrical secondary battery. The cap assembly of the present invention is dually sealed for the leakage of an electrolyte. Accordingly, there is an advantage in that the safety of the battery can be greatly improved because the electrolyte is rarely leaked although the battery is shocked because of dropping.

    Abstract translation: 本发明涉及盖组件和包括该盖组件的电池。 更具体地说，本发明涉及一种用于圆筒形二次电池的盖组件，其中电流中断装置（CID）的支撑单元位于垫圈的倾斜部分或露台部分中，因此电池被双重密封 ，从而防止电解液的泄漏，以及包括圆筒形二次电池的圆筒形二次电池。 对于电解液的泄漏，本发明的盖组件被双重密封。 因此，存在电池的安全性可以大大提高的优点，因为虽然电池因跌落而震动，但电解质很少会泄漏。

    Non-Aqueous Electrolyte and Electrochemical Device With an Improved Safety
    18.
    发明申请
    Non-Aqueous Electrolyte and Electrochemical Device With an Improved Safety 有权
    非水电解质和电化学装置具有改进的安全性

    公开(公告)号：US20090047582A1

    公开(公告)日：2009-02-19

    申请号：US12087813

    申请日：2007-01-12

    Applicant: Young Soo Kim ,  Soon Ho Ahn ,  Joon Sung Bae ,  Cha Hun Ku ,  Soo Hyun Ha ,  Duk Hyun Ryu ,  Sei Lin Yoon

    Inventor： Young Soo Kim ,  Soon Ho Ahn ,  Joon Sung Bae ,  Cha Hun Ku ,  Soo Hyun Ha ,  Duk Hyun Ryu ,  Sei Lin Yoon

    IPC: H01M10/40

    CPC classification number: H01M10/0567 ,  H01M4/13 ,  H01M4/139 ,  H01M10/052 ,  H01M10/056 ,  H01M10/0569 ,  H01M10/4235 ,  H01M2300/004 ,  Y02E60/122 ,  Y02P70/54

    Abstract: Disclosed are a non-aqueous electrolyte comprising a lithium salt and a solvent, the electrolyte containing, based on the weight of the electrolyte, 10-40 wt % of a compound of Formula 1 or its decomposition product, and 1-40 wt % of an aliphatic nitrile compound, as well as an electrochemical device comprising the non-aqueous electrolyte. Also disclosed is an electrochemical device comprising: a cathode having a complex formed between the surface of a cathode active material and an aliphatic nitrile compound; and an anode having formed thereon a coating layer containing a decomposition product of the compound of Formula 1. Moreover, disclosed is an electrochemical device comprising: a cathode having a complex formed between the surface of a cathode active material and an aliphatic nitrile compound; and a non-aqueous electrolyte containing the compound of Formula 1 or its decomposition product. In addition, disclosed is an electrochemical device comprising: an anode having formed thereon a coating layer containing a decomposition product of the compound of Formula 1; and a non-aqueous electrolyte containing the compound of Formula 1 or its decomposition product.

    Abstract translation: 公开了包含锂盐和溶剂的非水电解质，所述电解质包含基于电解质重量的10-40重量％的式1化合物或其分解产物，和1-40重量％的 脂族腈化合物，以及包含非水电解质的电化学装置。 还公开了一种电化学装置，包括：阴极，其在阴极活性材料的表面和脂族腈化合物之间形成复合物; 以及在其上形成有包含式1化合物的分解产物的涂层的阳极。此外，公开了一种电化学装置，其包括：阴极，其在阴极活性物质的表面和脂族腈化合物之间形成复合体; 和含有式1化合物或其分解产物的非水电解质。 此外，公开了一种电化学装置，其包括：阳极，其上形成有包含式1化合物的分解产物的涂层; 和含有式1化合物或其分解产物的非水电解质。

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