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    • 21. 发明申请
    • Non-aqueous electrolyte and lithium secondary battery using the same
    • 非水电解质和锂二次电池使用相同
    • US20070141475A1
    • 2007-06-21
    • US10588481
    • 2004-02-10
    • Soon Ho AhnJae LeeJeong ChoHo LeeMi SonHyeong KimHan Lee
    • Soon Ho AhnJae LeeJeong ChoHo LeeMi SonHyeong KimHan Lee
    • H01M10/40H01M4/58
    • H01M10/052H01B1/122H01M10/0567H01M10/4235
    • The present invention relates to a nonaqueous electrolyte solution containing new additives and a lithium secondary battery including the same. More particularly, the invention relates to a nonaqueous electrolyte solution containing a lithium salt, an electrolyte compound, a first additive compound with an oxidation initiation potential of more than 4.2 V, and a second additive compound with an oxidation initiation potential of more than 4.2 V, which is higher in oxidation initiation potential than the first additive, and deposits oxidative products or form a polymer film, in oxidation, as well as a lithium secondary battery including the same. The present invention can provide a lithium secondary battery excellent in both the battery performance and the battery safety in overcharge by the combined use of the first additive and the second battery as additives to the nonaqueous electrolyte solution.
    • 本发明涉及含有新添加剂的非水电解液和包含该添加剂的锂二次电池。 更具体地说,本发明涉及含有锂盐,电解质化合物,氧化起始电位大于4.2V的第一添加剂化合物和氧化起始电位大于4.2V的第二添加剂化合物的非水电解质溶液 ,其氧化起始电位高于第一添加剂,并且氧化产生氧化物或形成聚合物膜,以及包含其的锂二次电池。 本发明可以通过将第一添加剂和第二电池作为添加剂与非水电解质溶液的组合使用,提供在电池性能和电池安全性方面优异的锂二次电池。
    • 22. 发明授权
    • Electrode for lithium secondary battery
    • 锂二次电池用电极
    • US08445143B2
    • 2013-05-21
    • US11056290
    • 2005-02-11
    • Young Soo KimSoon Ho Ahn
    • Young Soo KimSoon Ho Ahn
    • H01M6/16
    • H01M4/0419H01M4/0402H01M4/0404H01M4/139H01M4/62H01M4/628H01M10/0525H01M10/0567H01M10/4235H01M2300/004
    • Disclosed is an electrode comprising an aliphatic nitrile compound, wherein the aliphatic nitrile compound is coated on a surface of the electrode or is incorporated into the electrode active materials. A lithium secondary battery having the electrode is also disclosed. The lithium secondary battery has excellent safety so as to prevent ignition and explosion generated when the internal temperature of the battery is increased due to the heat emission caused by the reaction of an electrolyte with a cathode and the structural collapse of a cathode occurring upon overcharge. Additionally, it is also possible to prevent ignition and explosion when the battery is exposed to high temperature due to an increase in temperature resulting from heating or local short circuit caused by physical impacts. Further, it is possible to solve the problems of an increase in viscosity and degradation in battery performance at a low temperature occurring when an aliphatic nitrile compound is used as an additive for electrolyte.
    • 公开了一种包含脂族腈化合物的电极,其中脂肪族腈化合物被涂覆在电极的表面上,或者被结合到电极活性材料中。 还公开了具有电极的锂二次电池。 锂二次电池具有优异的安全性,以防止由于电解质与阴极的反应引起的热发射和过充电时发生的阴极的结构崩溃,电池的内部温度升高时产生的点火和爆炸。 此外,当由于物理冲击导致的加热导致的温度升高或局部短路导致电池暴露于高温时,也可以防止点火和爆炸。 此外,可以解决当使用脂族腈化合物作为电解质添加剂时发生的低温下的粘度增加和电池性能劣化的问题。
    • 25. 发明申请
    • Non-Aqueous Electrolyte and Electrochemical Device With an Improved Safety
    • 非水电解质和电化学装置具有改进的安全性
    • US20090047582A1
    • 2009-02-19
    • US12087813
    • 2007-01-12
    • Young Soo KimSoon Ho AhnJoon Sung BaeCha Hun KuSoo Hyun HaDuk Hyun RyuSei Lin Yoon
    • Young Soo KimSoon Ho AhnJoon Sung BaeCha Hun KuSoo Hyun HaDuk Hyun RyuSei Lin Yoon
    • H01M10/40
    • H01M10/0567H01M4/13H01M4/139H01M10/052H01M10/056H01M10/0569H01M10/4235H01M2300/004Y02E60/122Y02P70/54
    • 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.
    • 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。
    • 30. 发明授权
    • Electrode with enhanced performance and electrochemical device comprising the same
    • 具有增强性能的电极和包含该电极的电化学装置
    • US07981543B2
    • 2011-07-19
    • US11541204
    • 2006-09-29
    • Soo Jin KimSoon Ho Ahn
    • Soo Jin KimSoon Ho Ahn
    • H01M4/13
    • H01M10/052H01M4/0404H01M4/139H01M4/1393H01M4/621H01M4/622
    • Disclosed is an electrode slurry comprising: (a) an electrode active material capable of lithium intercalation/deintercalation; and (b) monomers capable of forming a polymer via polymerization. An electrode having a binder polymer formed by applying the electrode slurry onto a current collector and carrying out in situ polymerization of the monomers, and an electrochemical device comprising the electrode are also disclosed. The electrode uses monomers capable of forming a binder polymer via polymerization under heat or light upon drying of the electrode, instead of the conventional PVdF or SBR-based binders. Therefore, it is possible to simplify a process for manufacturing an electrode, to provide an eco-friendly electrode by virtue of the use of an aqueous solvent as a dispersion medium, to improve the ion conductivity of a binder by virtue of the use of a solvent for a battery electrolyte as a dispersion medium, and thus to improve the quality of an electrochemical device.
    • 公开了一种电极浆料,其包含:(a)能够插入/脱嵌锂的电极活性材料; 和(b)能够通过聚合形成聚合物的单体。 一种电极,其具有通过将电极浆料涂布在集电体上并进行单体的原位聚合而形成的粘合剂聚合物,以及包含电极的电化学装置。 电极使用能够通过在电极干燥时在热或光下聚合而形成粘合剂聚合物的单体,而不是常规的PVdF或SBR基粘合剂。 因此,可以简化电极的制造工艺,通过使用水性溶剂作为分散介质,提供环保电极,通过使用以下方法提高粘合剂的离子传导性 作为分散介质的电池电解质的溶剂,从而提高电化学装置的质量。