公开(公告)号：KR1020010096073A

公开(公告)日：2001-11-07

申请号：KR1020000019994

申请日：2000-04-17

Applicant: 한국과학기술연구원

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

IPC: H01M4/36

Abstract: PURPOSE: Provided are a surface-modified carbon-based cathode for a lithium secondary battery, which has improved conductivity, high ratio charge and discharge property, electrode capacity, and cycle property, a preparation thereof, and the lithium secondary battery containing the same. CONSTITUTION: The cathode contains the carbon material as a cathode active material, wherein the particle surface of the carbon material is coated with metal or metal oxides by a chemical fluid deposition technique and the thickness of the coating layer is 1-300nm. The carbon material is graphite, coke, or hard carbon. The metal and/or the metal oxides are Li, Al, Sn, Bi, Si, Sb, Ni, Cu, Ti, V, Cr, Mn, Fe, Co, Ag, La, Pd, Ru, Au, Pt, Ir, alloy thereof, and/or the metal oxides thereof. The process for producing the cathode contains the steps of: fluidizing the carbon material by using inert gas; and supplying precursors of the metal or the metal oxides with associated gas under the proper temperature and pressure for coating.

Abstract translation: 目的：提供一种锂二次电池的表面改性碳基阴极，其具有改善的导电性，高充放电性，电极容量和循环性能，其制备方法和含有该二次电池的锂二次电池。 构成：阴极含有作为正极活性物质的碳材料，其中通过化学流体沉积技术将碳材料的颗粒表面涂覆金属或金属氧化物，并且涂层的厚度为1-300nm。 碳材料是石墨，焦炭或硬碳。 金属和/或金属氧化物是Li，Al，Sn，Bi，Si，Sb，Ni，Cu，Ti，V，Cr，Mn，Fe，Co，Ag，La，Pd，Ru，Au，Pt，Ir ，它们的合金，和/或其金属氧化物。 阴极生产方法包括以下步骤：通过使用惰性气体使碳材料流化; 并在适当的温度和压力下用相关气体供给金属或金属氧化物的前体以进行涂覆。

公开(公告)号：KR1020010086972A

公开(公告)日：2001-09-15

申请号：KR1020000011005

申请日：2000-03-06

Applicant: 한국과학기술연구원

Inventor： 윤경석 ,  조병원 ,  조원일 ,  김형선 ,  김운석

IPC: H01M10/00

Abstract: PURPOSE: A gel-type polymer electrolyte, a complex electrode using the electrolyte, a lithium secondary battery using the electrode and their preparation method are provided, to improve the energy density, cycle lifetime, characteristics at a low and high temperature, a charge/discharge efficiency and stability of a secondary battery. CONSTITUTION: The gel-type polymer electrolyte comprises 5-90 wt% of a function-I polymer selected from polyacrylonitrile-based polymer and poly(methyl methacrylate) (PMMA)-based polymer; 5-80 wt% of a function-II polymer selected from a poly(vinylidene-fluoride) (PVdF)-based polymer and a PMMA-based polymer; and 5-80 wt% of a function-III polymer selected from a PVC-based polymer and a PVdF-based polymer. Optionally the gel-type polymer electrolyte comprises further a plasticizer or an organic solvent; and/or a filler. The complex electrode comprises the gel-type polymer electrolyte which is contained in the pore of an anode or cathode, and a layer made of the gel-type polymer electrolyte with the thickness of 1-20 micrometers formed on the surface of an anode or cathode. The lithium secondary battery is provided with a laminated body which comprises a cathode, an isolation membrane, an anode, an isolation membrane and a cathode, wherein the anode and the cathode are made of the complex electrode and the isolation membrane is made of polyethylene, polypropylene or nonwoven; a terminal connected with the anodes and cathodes; and a case surrounding the laminated body.

Abstract translation: 目的：提供凝胶型聚合物电解质，使用电解质的复合电极，使用电极的锂二次电池及其制备方法，以提高能量密度，循环寿命，低温和高温特性，充电/ 二次电池的放电效率和稳定性。 构成：凝胶型聚合物电解质包含5-90重量％的选自聚丙烯腈基聚合物和聚甲基丙烯酸甲酯（PMMA）（PMMA））聚合物的官能聚合物; 5-80重量％的选自聚（偏二氟乙烯）（PVdF）基聚合物和PMMA基聚合物的官能团II聚合物; 和5-80重量％的选自PVC基聚合物和PVdF基聚合物的功能III聚合物。 任选地，凝胶型聚合物电解质还包含增塑剂或有机溶剂; 和/或填料。 复合电极包含包含在阳极或阴极的孔中的凝胶型聚合物电解质和由阳极或阴极的表面上形成的厚度为1-20微米的凝胶型聚合物电解质制成的层 。 该锂二次电池设置有包括阴极，隔离膜，阳极，隔离膜和阴极的层叠体，其中阳极和阴极由复合电极制成，隔离膜由聚​​乙烯制成， 聚丙烯或无纺布; 与阳极和阴极连接的端子; 以及围绕层叠体的壳体。

公开(公告)号：KR1020010084522A

公开(公告)日：2001-09-06

申请号：KR1020000009629

申请日：2000-02-26

Applicant: 한국과학기술연구원

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

IPC: H01M10/36

CPC classification number: H01M4/0421 ,  H01M4/0402 ,  H01M4/0426 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  Y10T29/49108 ,  Y10T29/49115

Abstract: PURPOSE: A metal oxide electrode coated with porous metal, metal oxide or carbon thin film, its preparation method and a lithium secondary battery using the electrode are provided, to improve the capacity of a battery, the efficiency of charging/discharging and the lifetime. CONSTITUTION: The metal oxide electrode is such that it is coated with a thin film comprising porous metal, porous metal oxide or porous carbon by the thickness of several Angstrom to several micrometers. The method comprises the steps of placing a metal oxide electrode roll in a vacuum chamber; evaporating metal, metal oxide or carbon to coat the electrode with porous metal, porous metal oxide or porous carbon with unwinding the electrode from the roll at regular speed and winding it to another roll; and placing the electrode at a specific temperature under vacuum to stabilize the electrode. Preferably the porous metal is selected from the group consisting of Li, Al, Sn, Bi, Si, Sb, Ni, Cu, Ti, V, Cr, Mn, Fe, Co, Zn, Mo, W, Ag, Au, Pt. Ir, Ru or their alloys; and the metal oxide electrode comprises an active material which is prepared by using LiCoO2, LiMn2O4, LiNiO2, V6O13 or V2O5.

Abstract translation: 目的：提供涂覆有多孔金属，金属氧化物或碳薄膜的金属氧化物电极，其制备方法和使用该电极的锂二次电池，以提高电池的容量，充电/放电的效率和使用寿命。 构成：金属氧化物电极使其涂覆有包括多孔金属，多孔金属氧化物或多孔碳的薄膜，厚度为几埃至几微米。 该方法包括将金属氧化物电极辊放置在真空室中的步骤; 蒸发金属，金属氧化物或碳，以多孔金属，多孔金属氧化物或多孔碳涂覆电极，以规则的速度将电极从辊中退绕并将其卷绕到另一个辊上; 并将电极置于特定温度的真空下以使电极稳定。 优选多孔金属选自Li，Al，Sn，Bi，Si，Sb，Ni，Cu，Ti，V，Cr，Mn，Fe，Co，Zn，Mo，W，Ag，Au，Pt 。 Ir，Ru或它们的合金; 并且金属氧化物电极包含通过使用LiCoO 2，LiMn 2 O 4，LiNiO 2，V 6 O 13或V 2 O 5制备的活性材料。

公开(公告)号：KR1020010056694A

公开(公告)日：2001-07-04

申请号：KR1019990058267

申请日：1999-12-16

Applicant: 한국과학기술연구원

Inventor： 윤경석 ,  조병원 ,  조원일 ,  남상철 ,  윤영수

IPC: H01M4/36

Abstract: PURPOSE: A secondary cell called the lithium battery is provided to improve life and stability at more than 500 times of charging/discharging cycles by comprising amorphous vanadium oxide containing copper component as the anode of the battery. CONSTITUTION: The battery comprises the anode consisting of amorphous vanadium oxide containing 0.1-15 wt.% of copper component having layered structure. The vanadium oxide compound may include at least one selected from a group consisting of iron, nickel, cobalt, tin, antimony, bismuth, magnesium, zinc and chrome in total amount of 0.1-15 wt.% based on the weight of compound. The vanadium oxide is used as a thin film state prepared by using PVD, CVD, sol-gel method, spin-coating method, electrostatic spray deposition manner and so on. The anode is produced by generating copper, tin, iron or antimony by means of sputtering gun and depositing it simultaneously with the vanadium oxide to form the amorphous structure.

Abstract translation: 目的：提供称为锂电池的二次电池，通过包含含有铜组分的无定形氧化钒作为电池的阳极来提高超过500次充电/放电循环的寿命和稳定性。 构成：电池包括由具有层状结构的0.1-15重量％铜组分的无定形氧化钒组成的阳极。 氧化钒化合物可以包括选自铁，镍，钴，锡，锑，铋，镁，锌和铬中的至少一种，其总量为化合物重量的0.1-15重量％。 使用氧化钒作为通过使用PVD，CVD，溶胶 - 凝胶法，旋涂法，静电喷雾沉积方式等制备的薄膜状态。 阳极通过溅射枪产生铜，锡，铁或锑，并与氧化钒同时沉积以形成非晶结构。

公开(公告)号：KR100291067B1

公开(公告)日：2001-06-01

申请号：KR1019980019243

申请日：1998-05-27

Applicant: 한국과학기술연구원

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

IPC: H01M4/96

Abstract: PURPOSE: Provided are method for completely treating carbon electrode with lithium which is used for enhancing a capacity and a cycle life of the carbon electrode, and a method for producing lithium secondary cell using the same. CONSTITUTION: The method for completely treating carbon electrode with lithium comprises the steps of (i) treating a carbon electrode with lithium by varying a temperature and ionic conductivity under the state which carbon electrode and lithium metal are connected or contacted with each other by resistance, (ii) stabilizing the treated carbon electrode at the predetermined temperature for the predetermined period to form a stable film on the surface of carbon electrode, thereby enhancing a reversibility in charging/discharging.

公开(公告)号：KR1020000003091A

公开(公告)日：2000-01-15

申请号：KR1019980024195

申请日：1998-06-25

Applicant: 한국과학기술연구원

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

IPC: H01M10/05

CPC classification number: H01M10/0525 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M10/0565 ,  H01M10/0585

Abstract: PURPOSE: A method for manufacturing a multicomponent system solid high molecule electrolyte is provided to contain an excellent adhesion and a mechanical strength for easily manufacturing a battery. CONSTITUTION: A multicomponent system solid high molecule electrolyte comprises: more than one compounds selected from a group composed of 0¯80 % of a poly-acrylonitrile(PAN) system compound, 0¯80 % of a PVC system compound, and 0¯80 % of a poly-vinylidene fluoride(PVdF) system compound while a whole weight of the compound is 100 wt%; and 5¯90 wt% of a poly-methyl-methacrylate(PMMA) system compound.

Abstract translation: 目的：提供一种用于制造多组分固体高分子电解质的方法，以便容易制造电池具有极好的附着力和机械强度。 构成：多组分固体高分子电解质包括：多于一种选自由0-80％聚丙烯腈（PAN）体系化合物组成的组，0-80％PVC体系化合物和0-80 ％的聚偏二氟乙烯（PVdF）体系化合物，而化合物的全部重量为100重量％; 和5〜90重量％的聚甲基丙烯酸甲酯（PMMA）体系化合物。

公开(公告)号：KR1020000003090A

公开(公告)日：2000-01-15

申请号：KR1019980024194

申请日：1998-06-25

Applicant: 한국과학기술연구원

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

IPC: H01M10/05

CPC classification number: H01M10/0525 ,  H01M4/1391 ,  H01M4/1393 ,  H01M10/0565

Abstract: PURPOSE: The production method of two-component system solid high molecule electrolyte is provided to easily make a battery having a superior adhesive strength and mechanical strength and battery efficiency. CONSTITUTION: The production method of two-component system solid high molecule electrolyte comprises the steps of: mixing PAN/PVC class compound mixed PAN compound and PVC compound in the ratio of 10:1¯1:5 wt% with a plasticizer and an organic solvent; high molecule blending to form a matrix of a solid high molecule electrolyte; casting and drying to get a solid high molecule membrane; injecting the organic solvent electrolyte melted lithium.

Abstract translation: 目的：提供双组分体系固体高分子电解质的制备方法，使电池具有优异的粘合强度和机械强度和电池效率。 构成：双组分体系固体高分子电解质的制备方法包括以下步骤：将PAN / PVC类化合物混合PAN化合物与10：1〜1：5重量％的PVC化合物与增塑剂和有机物 溶剂; 高分子共混形成固体高分子电解质的基质; 铸造和干燥得到固体高分子膜; 注入有机溶剂电解液熔融的锂。

公开(公告)号：KR1019990086307A

公开(公告)日：1999-12-15

申请号：KR1019980019242

申请日：1998-05-27

Applicant: 한국과학기술연구원

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

IPC: H01M10/05

Abstract: 본 발명은 복합 고체고분자 전해질 및 리튬고분자 전지의 제조방법에 있어서, PAN계 전해질인 경우 강도가 떨어지고, dry room에서 제조해야 하는 제조상의 어려움과, 또한 PVdF계 전해질은 접착력이 불량하여 전극 및 전지 제조시 가열 lamination과 추출공정을 필요로 하는 단점 및 고체고분자 제조시 가소제의 추출과정과 유기용매 전해질의 함침과정이 요구되어 제조공정이 까다로운 문제점을 해결하기 위한 것으로, 기지고분자로 PAN계와 PVdF계를 혼합한 것을 사용하여 SiO
2 , 가소제, 유기용매를 혼합하고, 가열하여 blending된 고체고분자 매트릭스를 형성시킨 후, 캐스팅하여 건조하고 유기용매 전해질을 주입하여 고체고분자 전해질을 제조하는 방법과, 상기의 고체고분자 전해질, 음·양극을 적층하고 유기용매 전해질을 주입하여 전지 성능이 우수한 리튬� ��분자 전지의 제조방법을 제공한다.

公开(公告)号：KR1019990086306A

公开(公告)日：1999-12-15

申请号：KR1019980019241

申请日：1998-05-27

Applicant: 한국과학기술연구원

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

IPC: H01M10/05

Abstract: 본 발명은 고체고분자 전해질 및 리튬고분자 전지의 제조방법에 있어서, PAN계 전해질의 기계적 안정성의 저하와, PVdF계 전해질의 접착력이 불량하여 전극 및 전지 제조시 가열 lamination과 추출공정을 필요로 하는 단점을 해결하기 위한 것으로, PAN계와 PVdF계를 blending하여 복합 고분자 전해질을 제조하여 PAN계 전해질의 우수한 접착력과 이온전도도를 그대로 유지하고 PVdF계 하이브리드형 전해질의 우수한 기계적 강도와 이온전도도를 유지함으로써 PAN계 전해질의 기계적 안정성을 향상시켰고, PVdF계 하이브리드형 전해질 제조시 가소제의 추출과정과 유기용매 전해질의 주입공정을 제거하였으며, 또한 PVdF 전해질의 접착력 문제를 해결하는 리튬고분자 전지용 고체고분자 전해질의 제조방법과, 고체고분자 전해질을 사용하여 복합 음·양극을 제조하고 � �들을 적층하여 접착력과 기계적 안정성이 우수하고 전지성능이 우수한 리튬고분자 전지의 제조방법을 제공하였다.

公开(公告)号：KR1019990086305A

公开(公告)日：1999-12-15

申请号：KR1019980019240

申请日：1998-05-27

Applicant: 한국과학기술연구원

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

IPC: H01M4/32

Abstract: 본 발명은 종래의 AB
5 계 니켈/금속수소 축전지의 한계인 고용량화와 AB
2 계 니켈/금속수소 축전지의 싸이클 수명, 자기방전율, 초기활성화 등의 문제점을 해결하기 위한 것으로서, AB
2 계 수소저장합금에 La을 첨가하고 불소화 처리를 행한 후 전극을 제조한 경우, 일정량의 La이 첨가되면 금속수소전극의 평탄압력이 낮아지고 사용 가능한 수소저장량의 증가에 의해 전극용량의 증가 및 우수한 싸이클 수명, 우수한 급속충방전특성, 또한 안정한 LaF
3 화합물의 형성으로 수소저장합금의 부식이 억제되었기 때문에 자기 방전율이 대폭 감소하고, 전해질에 KF를 일정량 첨가하므로써, 용액에 첨가한 불소가 니켈전극에 작용하여 니켈전극의 용량 및 싸이클 수명을 향상시키도록 한 니켈/금속수소 축전지의 제조방법을 제공한다.