公开(公告)号：US20100279168A1

公开(公告)日：2010-11-04

申请号：US12810541

申请日：2008-12-31

Applicant: Ho-Chun Lee ,  Jeong-Ju Cho ,  Jong-Ho Jeon

Inventor： Ho-Chun Lee ,  Jeong-Ju Cho ,  Jong-Ho Jeon

IPC: H01M2/02

CPC classification number: H01M10/0525 ,  H01M2/0207 ,  H01M4/587 ,  H01M10/0569 ,  H01M2300/0025

Abstract: A pouch-type lithium secondary battery includes an electrode assembly having an anode made of carbon material capable of occluding or emitting lithium ions, a cathode made of lithium-containing oxide, and a separator interposed between the cathode and the anode for electrical insulation therebetween; a pouch-type case made of sheet to provide a space receiving the electrode assembly; and a non-aqueous electrolyte injected into the electrode assembly. The non-aqueous electrolyte is a non-linear carbonate-based non-aqueous electrolyte including a lithium salt, (a) a cyclic carbonate compound, and (b) a linear ester compound selected from propionate-based compound, methyl butyrate, and propyl acetate, or their mixtures. During LiPF6 IM dissolution, the non-aqueous electrolyte has an ion conductivity of 9 mS/cm or above at about 23° C. This pouch-type lithium secondary battery ensures excellent high-rate discharging characteristics and solves swelling problems associated with a pouch-type lithium secondary battery.

Abstract translation: 袋型锂二次电池包括具有由能够吸留或发射锂离子的碳材料制成的阳极的电极组件，由含锂氧化物制成的阴极和插入在阴极和阳极之间的用于电绝缘的隔膜; 由片材制成的袋状壳体，以提供容纳电极组件的空间; 和注入到电极组件中的非水电解质。 非水电解质是包含锂盐的非线性碳酸酯类非水电解质，（a）环状碳酸酯化合物和（b）选自丙酸酯类化合物，丁酸甲酯和丙基的直链酯化合物 乙酸酯或它们的混合物。 在LiPF 6 IM溶出期间，非水电解质在约23℃下的离子电导率为9mS / cm以上。该袋式锂二次电池确保了优异的高倍率放电特性，并且解决了与袋状锂离子电池相关的溶胀问题， 型锂二次电池。

公开(公告)号：US20080254370A1

公开(公告)日：2008-10-16

申请号：US11576084

申请日：2005-12-07

Applicant: Ho Chun Lee ,  Hyeong Jin Kim

Inventor： Ho Chun Lee ,  Hyeong Jin Kim

IPC: H01M6/16

CPC classification number: H01M10/0567 ,  H01M4/38 ,  H01M4/525 ,  H01M10/05 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/4235

Abstract: Disclosed is an electrolyte comprising: (a) an electrolyte salt; (b) a non-aqueous electrolyte solvent; and (c) a binary or multinary metal oxide salt. An electrochemical device comprising the same electrolyte is also disclosed. The metal oxide salt used in the electrolyte is dissolved in a non-aqueous solvent and generates oxyanions capable of improving corrosion resistance of metals. Therefore. the electrolyte prevents corrosion of metallic materials present in an electrochemical device, caused by extreme conditions, such as overcharge, overdischarge and high-temperature storage conditions, to which the device is exposed. Further, the electrolyte prevents degradation in the quality of an electrochemical device, caused by corrosion of metallic materials.

Abstract translation: 公开了一种电解质，其包含：（a）电解质盐; （b）非水电解质溶剂; 和（c）二元或多元金属氧化物盐。 还公开了包含相同电解质的电化学装置。 将电解质中使用的金属氧化物盐溶解于非水溶剂中，生成能够提高金属耐蚀性的氧阴离子。 因此。 电解液可以防止由于器件暴露于极端条件（如过充电，过放电和高温储存条件）引起的电化学器件中存在的金属材料的腐蚀。 此外，电解质防止由金属材料的腐蚀引起的电化学装置的质量下降。

公开(公告)号：US20080020266A1

公开(公告)日：2008-01-24

申请号：US11779576

申请日：2007-07-18

Applicant: Su Jin YOON ,  Jeong Ju CHO ,  Ho Chun LEE

Inventor： Su Jin YOON ,  Jeong Ju CHO ,  Ho Chun LEE

IPC: H01M6/18

CPC classification number: H01M10/0567 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0568

Abstract: Disclosed is an electrolyte for a secondary battery comprising an electrolyte salt and an electrolyte solvent, the electrolyte further comprising a lactam-based compound substituted with an electron withdrawing group (EWG) at the nitrogen position thereof. The electrolyte allows formation of a firm and dense SEI film on the surface of an anode, minimizes irreversible oxidative decomposition at a cathode, and thus can provide a battery with significantly improved lifespan, stability and high temperature characteristics.

Abstract translation: 公开了一种包含电解质盐和电解质溶剂的二次电池用电解质，电解质还包含在其氮位置被取代基取代的内酰胺类化合物（EWG）。 电解质允许在阳极表面形成牢固且致密的SEI膜，使阴极处的不可逆氧化分解最小化，从而可以提供具有显着改善的寿命，稳定性和高温特性的电池。