公开(公告)号：KR1020030007633A

公开(公告)日：2003-01-23

申请号：KR1020027015455

申请日：2000-05-19

Applicant: 한국과학기술연구원

Inventor： 윤경석 ,  조병원 ,  조성무 ,  이화섭 ,  조원일 ,  박건유 ,  김형선 ,  김운석 ,  고석구 ,  천석원 ,  최성원

IPC: H01M10/05

CPC classification number: H01M10/058 ,  H01M2/162 ,  H01M2/1673 ,  H01M10/052

Abstract: PURPOSE: Provided are a lithium secondary battery which comprises a super fine fibrous porous polymer separator film and has the advantages of better adhesion with electrodes, good mechanical strength, better performance at low and high temperatures, better compatibility with organic electrolyte solution of a lithium secondary battery, and its fabrication method. CONSTITUTION: The lithium secondary battery comprises a cathode active material, an anode active material, a porous polymer separator film and an organic electrolyte solution dissolving a lithium salt, wherein the porous polymer separator film is constructed with super fine fibrous polymer having a diameter of 1-3000nm and is fabricated by the steps of: (a) melting at least one polymer or dissolving at least one polymer with organic solvents to obtain at least one polymeric melt or at least one polymeric solution; (b) adding the obtained polymeric melt or polymeric solution to barrels of an electrospinning machine; and (c) discharging the polymeric melt or polymeric solution onto a substrate using a nozzle to form a porous separator film.

Abstract translation: 目的：提供一种锂二次电池，其包含超细纤维多孔聚合物隔膜，具有电极粘附性好，机械强度高，在低温高温下性能更好的优点，与锂二次电池的有机电解质溶液更好的相容性 电池及其制造方法。 构成：锂二次电池包括阴极活性物质，负极活性物质，多孔聚合物隔膜和溶解锂盐的有机电解质溶液，其中多孔聚合物隔膜用直径为1的超细纤维聚合物构成 通过以下步骤制造：（a）熔融至少一种聚合物或用有机溶剂溶解至少一种聚合物以获得至少一种聚合物熔体或至少一种聚合物溶液; （b）将获得的聚合物熔体或聚合物溶液加入到静电纺丝机的桶中; 和（c）使用喷嘴将聚合物熔体或聚合物溶液排出到基底上以形成多孔分隔膜。

公开(公告)号：KR1020030005256A

公开(公告)日：2003-01-17

申请号：KR1020027013109

申请日：2001-01-31

Applicant: 한국과학기술연구원

Inventor： 조병원 ,  조원일 ,  김형선 ,  김운석 ,  이희우 ,  김용태 ,  송민규

IPC: H01M10/05

CPC classification number: H01M10/0565 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/056 ,  H01M2300/0091

Abstract: PURPOSE: An UV-curing multi-component polymer blend electrolyte, a lithium secondary battery containing the electrolyte and their preparation methods are provided, to improve the adhesive strength, the mechanical properties, the low and high temperature characteristic, the high rate discharge capacity, the lifetime, the capacity and the stability of a battery. CONSTITUTION: The UV-curing multi-component polymer blend electrolyte comprises a function-I polymer; a function-II polymer; a function-III polymer; an organic electrolyte solution which is prepared by dissolving a lithium salt into an organic solvent; and optionally at least one selected from the group consisting of a plasticizer, a porous filler, a UV curing initiator and a curing accelerator. The function-I polymer is obtained by UV curing the ethylene glycol di(meth)acrylate oligomer represented by the formula CH2=CR1COO(CH2CH2O)nCOCR2=CH2, wherein R1 and R2 are independent each other and are H or methyl group and n is an integer of 3-20; the function-II polymer is selected from the group consisting of polyacrylonitrile, poly(methyl methacrylate) and their mixture; and the function-III polymer is selected from the group consisting of polyvinylidene fluoride, poly(vinyl chloride) and their mixture. Preferably the lithium salt is selected from the group consisting of LiPF6, LiClO4, LiAsF6, LiBF4, LiCF3SO3, Li(CF3SO2)2N and their mixtures; and the organic solvent is selected from the group consisting of ethylene carbonate, propylene carbonate, diethyl carbonate, dimethyl carbonate, ethylmethyl carbonate and their mixtures.

Abstract translation: 目的：提供紫外线固化多组分聚合物共混电解质，含有电解质的锂二次电池及其制备方法，提高粘合强度，机械性能，低温高温特性，高放电容量， 电池的寿命，容量和稳定性。 构成：紫外线固化多组分聚合物共混电解质包含一种功能聚合物; 功能II聚合物; 功能III聚合物; 通过将锂盐溶解在有机溶剂中制备的有机电解质溶液; 和任选的选自增塑剂，多孔填料，UV固化引发剂和固化促进剂中的至少一种。 通过紫外线固化式CH 2 = CR 1 COO（CH 2 CH 2 O）n COCR 2 = CH 2表示的乙二醇二（甲基）丙烯酸酯低聚物，其中R1和R2彼此独立，为H或甲基，n为 3-20的整数; 功能II聚合物选自聚丙烯腈，聚（甲基丙烯酸甲酯）及其混合物; 并且功能III聚合物选自聚偏二氟乙烯，聚（氯乙烯）及其混合物。 优选锂盐选自LiPF 6，LiClO 4，LiAsF 6，LiBF 4，LiCF 3 SO 3，Li（CF 3 SO 2）2 N及其混合物; 有机溶剂选自碳酸亚乙酯，碳酸亚丙酯，碳酸二乙酯，碳酸二甲酯，碳酸甲乙酯及其混合物。

公开(公告)号：KR1020030005254A

公开(公告)日：2003-01-17

申请号：KR1020027013106

申请日：2001-01-31

Applicant: 한국과학기술연구원

Inventor： 윤경석 ,  조병원 ,  조원일 ,  김형선 ,  김운석

IPC: H01M10/05

CPC classification number: H01M2/1653 ,  H01M2/1686 ,  H01M10/052 ,  H01M10/056 ,  H01M10/0565 ,  H01M2300/0094

Abstract: PURPOSE: A multi-layered polymer electrolyte and a lithium secondary battery containing the electrolyte are provided, to improve the adhesive strength, the mechanical properties, the low and high temperature characteristics, the high rate discharge capacity, the lifetime, the capacity and the stability of a battery. CONSTITUTION: The electrolyte comprises a separation membrane layer, a gel polymer electrolyte layer, and an organic electrolyte solution which is prepared by dissolving a lithium salt into an organic solvent. The separation membrane layer is made of a polymer electrolyte, polypropylene, polyethylene, polyvinylidene fluoride or non-woven; the gel polymer electrolyte layer comprises 5-90 wt% of a polyacrylonitrile-based polymer, 5-80 wt% of a polyvinylidene fluoride-based polymer or a poly(methyl methacrylate)-based polymer, and 5-80 wt% of a poly(vinyl chloride)-based polymer or a polyvinylidene fluoride-based polymer, and is coated to the one or both sides of the separation membrane. Preferably the lithium salt is selected from the group consisting of LiPF6, LiClO4, LiAsF6, LiBF4, LiCF3SO3, Li(CF3SO2)2N and their mixtures; and the organic solvent is selected from the group consisting of ethylene carbonate, propylene carbonate, diethyl carbonate, dimethyl carbonate, ethylmethyl carbonate and their mixtures.

Abstract translation: 目的：提供一种多层聚合物电解质和含有电解质的锂二次电池，以提高粘合强度，机械性能，低温和高温特性，高放电容量，寿命，容量和稳定性 的电池。 构成：电解质包含分离膜层，凝胶聚合物电解质层和通过将锂盐溶解在有机溶剂中而制备的有机电解质溶液。 分离膜层由聚合物电解质，聚丙烯，聚乙烯，聚偏二氟乙烯或无纺布制成; 凝胶聚合物电解质层包含5-90重量％的基于聚丙烯腈的聚合物，5-80重量％的聚偏二氟乙烯基聚合物或聚（甲基丙烯酸甲酯）基聚合物，以及5-80重量％的聚 （氯乙烯）类聚合物或聚偏二氟乙烯类聚合物，并且被涂覆在分离膜的一侧或两侧。 优选锂盐选自LiPF 6，LiClO 4，LiAsF 6，LiBF 4，LiCF 3 SO 3，Li（CF 3 SO 2）2 N及其混合物; 有机溶剂选自碳酸亚乙酯，碳酸亚丙酯，碳酸二乙酯，碳酸二甲酯，碳酸甲乙酯及其混合物。

公开(公告)号：KR1020020093536A

公开(公告)日：2002-12-16

申请号：KR1020010032338

申请日：2001-06-09

Applicant: 한국과학기술연구원

Inventor： 조병원 ,  조원일 ,  김형선 ,  김운석 ,  박호영

IPC: H01M10/36

Abstract: PURPOSE: A lithium electrode combined with a separator membrane in a body and a primary or secondary lithium battery employing the electrode are provided, to improve the capacity of a battery, the charging/discharging efficiency and the lifetime. CONSTITUTION: The lithium electrode is combined with a separator membrane in a body, which one side of the separator membrane is coated with lithium and metals in multilayered structure or composite structure by several to several tens micrometers. The metal is selected from the group consisting of Li, Al, Sn, Bi, Si, Sb, Ni, Cu, Ti, V, Cr, Mn, Co, Zn, Mo, W, Ag, Au, Ru, Pt and their alloys. The separator membrane comprises the material selected from the group consisting of PP, PE, PVdF and nonwoven. The secondary lithium battery comprises the lithium electrode, and a positive electrode active material selected from the group consisting of LiCoO2, LiNiO2, LiNiCoO2, LiMn2O4, V2O5 and V6O13. The primary lithium battery comprises the lithium electrode, and a positive electrode active material selected from the group consisting of MnO2, (CF)n and SOCl2.

Abstract translation: 目的：提供一种与体内隔离膜结合的锂电极和使用电极的一次或二次锂电池，以提高电池的容量，充放电效率和使用寿命。 构成：将锂电极与主体中的隔膜结合，隔膜的一侧用多层结构或复合结构的锂和金属涂覆数几十微米。 金属选自Li，Al，Sn，Bi，Si，Sb，Ni，Cu，Ti，V，Cr，Mn，Co，Zn，Mo，W，Ag，Au，Ru，Pt及其 合金。 分离膜包括选自PP，PE，PVdF和非织造材料的材料。 二次锂电池包括锂电极和选自LiCoO 2，LiNiO 2，LiNiCoO 2，LiMn 2 O 4，V 2 O 5和V 6 O 13的正极活性物质。 一次锂电池包括锂电极和选自MnO 2，（CF）n和SOCl 2的正极活性物质。

公开(公告)号：KR1020020088416A

公开(公告)日：2002-11-27

申请号：KR1020027013108

申请日：2001-01-31

Applicant: 한국과학기술연구원

Inventor： 조병원 ,  조원일 ,  김형선 ,  윤영수 ,  김운석 ,  남상철 ,  이승원 ,  박호영

IPC: H01M4/38

Abstract: PURPOSE: A lithium-metal composite electrode, its preparation method and a lithium battery using the electrode are provided, to improve the conductivity of an electrode and to maintain the potential distribution of the surface of an electrode, thereby enhancing the utilization rate, the cycle lifetime and the charge/discharge efficiency of a battery. CONSTITUTION: The lithium-metal composite electrode comprises the mixture of lithium particle or lithium alloy particle and a metal. The metal is selected from the group consisting of Ni, Cu, Ti, V, Cr, Mn, Fe, Co, Zn, Mo, W, Ag, Au, Ru, Pt, Ir, Al, Sn, Bi, Si, Sb and their alloys. The lithium alloy is an alloy of the metal selected from the group consisting of Al, Sn, Bi, Si, Sb, B and their alloys, and lithium. The method comprises the steps of evaporation-depositing the lithium or lithium alloy and the metal on the current collector simultaneously by using the thin film making technique; and compressing the deposited one with a pressure of 10-100 kg/cm¬2.

Abstract translation: 目的：提供锂金属复合电极及其制备方法和使用该电极的锂电池，以提高电极的导电性并保持电极表面的电位分布，从而提高利用率，循环 寿命和电池的充放电效率。 构成：锂金属复合电极包括锂颗粒或锂合金颗粒与金属的混合物。 金属选自Ni，Cu，Ti，V，Cr，Mn，Fe，Co，Zn，Mo，W，Ag，Au，Ru，Pt，Ir，Al，Sn，Bi，Si，Sb 及其合金。 锂合金是选自Al，Sn，Bi，Si，Sb，B及其合金中的金属和锂的合金。 该方法包括以下步骤：通过使用薄膜制备技术同时将集电体上的锂或锂合金和金属蒸发沉积; 并以10-100kg / cm 2的压力压缩沉积的。

公开(公告)号：KR100354455B1

公开(公告)日：2002-09-30

申请号：KR1019990053817

申请日：1999-11-30

Applicant: 이희우 ,  한국과학기술연구원

Inventor： 윤경석 ,  조병원 ,  조원일 ,  이희우 ,  송민규 ,  조진연

IPC: H01M10/05

CPC classification number: H01M10/0525 ,  H01M10/056

Abstract: 자외선경화를통하여중합되는폴리에틸렌글리콜디아크릴레이트 (PEGDA), 폴리에틸렌글리콜디메타크릴레이트 (PEGDMA) 자외선경화형고분자인기능-I의고분자와우수한전기적, 기계적물성을보이는폴리비닐리덴풀루오라이드 (PVdF), 폴리아크릴로니트릴 (PAN), 폴리메틸메타크릴레이트 (PMMA), 폴리비닐클로라이드 (PVC) 등의기능-II의고분자를일정한중량% 내에서블렌딩을하여기계적물성과전기적특성이우수할뿐 아니라자외선중합제조공정을이용하여제막공정시간을단축할수 있는새로운형태의고분자전해질을제시한다. 본발명의고분자전해질은비결정균질상이며고분자전해질을코발트양극과탄소음극에조합하여전지를조립할경우전극과의접촉성, 저온특성, 고율방전특성, 충방전특성, 전지용량및 수명등의전지성능이기존의고분자전해질에비하여우수한것이다.

公开(公告)号：KR1020020007881A

公开(公告)日：2002-01-29

申请号：KR1020000041408

申请日：2000-07-19

Applicant: 한국과학기술연구원

Inventor： 윤영수 ,  조원일 ,  조병원 ,  송종한 ,  전은정 ,  남상철 ,  신영화

IPC: H01M10/38

Abstract: PURPOSE: A method for producing a lithium phosphate sputtering target for an electrolyte of a thin film cell is provided to improve the quality of the lithium phosphate target for producing LiPON showing excellent properties as an electrolyte of thin film cell. CONSTITUTION: The method includes (a) calcining powders of lithium phosphate at a temperature range of 600 to 950 deg.C; (b) pulverizing the calcined powders; (c) compress molding the pulverized powder; and (d) sintering the molded body at a temperature range of 500 to 1500 deg.C. The method can further comprise a step of adding a binder to improve the molding before the compress molding in the step (c). The powder of lithium phosphate is represented by LixPyO4, in which x is 2.5 or more and 3.5 or less and y is 0.7 or more and 1.3 or less.

Abstract translation: 目的：提供一种用于制造薄膜电池用电解质的磷酸锂溅射靶的方法，以提高作为薄膜电池的电解质的显示出优异性能的LiPON的磷酸锂靶的质量。 构成：该方法包括（a）在600〜950℃的温度范围内煅烧磷酸锂粉末; （b）粉碎煅烧粉末; （c）压缩粉碎粉末; 和（d）在500〜1500℃的温度范围内烧结成型体。 该方法还可以包括在步骤（c）中在压缩成型之前添加粘合剂以改善模塑的步骤。 磷酸锂粉末由LixPyO4表示，其中x为2.5以上且3.5以下，y为0.7以上且1.3以下。

公开(公告)号：KR1020020006387A

公开(公告)日：2002-01-19

申请号：KR1020000040021

申请日：2000-07-12

Applicant: 한국과학기술연구원

Inventor： 이중기 ,  조병원 ,  조원일 ,  우주만 ,  박달근 ,  윤경석

IPC: H01M4/04

Abstract: PURPOSE: A method for modifying the surface of metal oxide electrode material powder for the anode of a lithium secondary battery and a surface-modified electrode material powder prepared by the method are provided, to improve the conductivity and formability of an electrode. CONSTITUTION: The method comprises the steps of loading the metal oxide particles for an electrode which is pretreated in a vacuum oven, into a fluidized bed chemical vaporization reactor; supplying an inert gas into the reactor to fluidize the particles; and supplying an organometallic precursor to the particles by using an accompanying gas, or spraying an organometallic compound-dissolved solution into the particles, to coat the particles by pyrolysis and chemical vaporization, thereby forming a metal or metal oxide coating with a thickness of 1-300 nm. Preferably the coated metal or metal oxide is selected from the group consisting of Li, Al, Sn, Bi, Si, Sb, Ni, Cu, Ti, V, Cr, Mn, Fe, Co, Ag, Zr, Mo, Au, Ru, Pd, In, Pt, Ir, their alloys, and their metal oxides.

Abstract translation: 目的：提供一种用于改善锂二次电池的阳极的金属氧化物电极材料粉末的表面的方法和通过该方法制备的表面改性的电极材料粉末，以提高电极的导电性和成形性。 方案：该方法包括将用于在真空炉中预处理的电极的金属氧化物颗粒加载到流化床化学气化反应器中的步骤; 向反应器中供应惰性气体以使颗粒流化; 并通过使用伴随的气体向颗粒提供有机金属前体，或将有机金属化合物溶解的溶液喷入颗粒中，通过热解和化学气化来涂覆颗粒，从而形成厚度为1微米的金属或金属氧化物涂层， 300 nm。 优选地，涂覆的金属或金属氧化物选自Li，Al，Sn，Bi，Si，Sb，Ni，Cu，Ti，V，Cr，Mn，Fe，Co，Ag，Zr，Mo，Au， Ru，Pd，In，Pt，Ir，它们的合金及其金属氧化物。

公开(公告)号：KR100301623B1

公开(公告)日：2001-11-30

申请号：KR1019980024196

申请日：1998-06-25

Applicant: 한국과학기술연구원

Inventor： 윤경석 ,  조병원 ,  조원일 ,  백지흠 ,  김형선 ,  김운석

IPC: H01M10/05

Abstract: 본발명은 5∼90중량%의 PMMA계 화합물 및 PAN계 화합물, PVC계 화합물 및 PVdF계 화합물로 이루어진 그룹으로부터 선택된 하나이상의 화합물을 각각 80중량%이하로 혼합하여 이루어지는 PMMA계/PAN계/PVC계/PVdF계 혼합물에, 가소제 및 유기용매를 혼합하고 이를 캐스팅하여 건조함으로써 고체고분자 막을 얻은 후, 리튬염이 용해된 유기용매전해질을 주입하는 것으로 이루어지는 것을 특징으로 하는 다성분계 고체고분자 전해질의 제조방법에 관한 것으로, 본발명에 의한 고체고분자 전해질들은 이온전도도가 리튬 고분자 전지용 전해질로서 충분히 사용할 수 있을 정도로 우수하고 접착력 및 기계적 강도도 우수하여 전지제조가 용이할 뿐만 아니라 이를 이용한 전지는 전극용량 및 싸이클 수명 특성과 같은 전지성능도 우수하게 나타나 리튬고분자 전지용 고체� ��분자 전해질로서 매우 적합한 것으로 나타났다.

公开(公告)号：KR100275787B1

公开(公告)日：2001-02-01

申请号：KR1019980019240

申请日：1998-05-27

Applicant: 한국과학기술연구원

Inventor： 윤경석 ,  조병원 ,  조원일 ,  백지흠 ,  이병호 ,  박호영

IPC: H01M4/32

Abstract: PURPOSE: The method is provided to accomplish high capacity, long life, low magnetic discharge rate, improved rapid charge/discharge, and rapid early activation of metallic hydrogen electrode, as well as high capacity and long life of nickel electrode. CONSTITUTION: The method comprises the steps of: (i) adding La compound to AB2 based hydrogen storage alloy to form a hydrogen storage alloy, (ii) immersing the alloy in aqueous solution in which HF and KF are dissolved, to form LaF3 on the surface of the hydrogen storage alloy. The amount of La which is added to the AB2 based hydrogen storage alloy is 1-10 weight%. KF is added to electrolyte, in order to insure fluorination effects continuously.

Abstract translation: 目的：提供高容量，长寿命，低放电速率，改善快速充放电，快速早期激活金属氢电极，以及高电容，长寿命的镍电极。 构成：该方法包括以下步骤：（i）将La化合物加入到基于AB2的储氢合金中以形成储氢合金，（ii）将合金浸入HF和KF溶解的水溶液中，形成LaF3 储氢合金表面。 加入到基于AB2的储氢合金中的La的量为1-10重量％。 将KF加入到电解液中，以确保持续的氟化效果。