公开(公告)号：KR100402919B1

公开(公告)日：2003-10-22

申请号：KR1020010063409

申请日：2001-10-15

Applicant: 한국과학기술연구원

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

IPC: C23C22/00

Abstract: PURPOSE: A surface treatment method of forming a porous oxide coating film having superior biocompatibility with bone, chemical and physical stabilities, uniformed pore distribution, expanded pore size and smooth surface characteristics on the surface of implants comprising metallic titanium or titanium alloys is provided. CONSTITUTION: The electrochemical surface treatment method of implants comprising metallic titanium or titanium alloys comprises the processes of pre-treating the surface of implants comprising metallic titanium or titanium alloys; forming an oxide coating film on the surface of the implants by electrochemically oxidizing the pre-treated implants; and post-treating the formed oxide coating film with an acid or alkaline aqueous solution to obtain uniformed pore distribution, wherein the pre-treatment process comprises the steps of degreasing the implants using acetone or alcohol; water washing the implants taken out of the aqueous solution by taking the implants out of the aqueous solution after dipping the degreased implants into a NaOH aqueous solution or KOH aqueous solution having a concentration of 30 g/liter at 80 deg.C for 5 minutes, pickling the water washed implants in a solution comprising 15 mL of concentrate nitric acid having a concentration of 61 wt.%, 3 mL of hydrofluoric acid having a concentration of 49 wt.% and 82 mL of distilled water at an ordinary temperature for 5 minutes, and washing the implants with distilled water for 10 minutes.

Abstract translation: 目的：提供一种形成多孔氧化物涂层膜的表面处理方法，所述多孔氧化物涂层膜具有优异的与骨的生物相容性，化学和物理稳定性，均匀的孔分布，扩大的孔径和在包含金属钛或钛合金的植入物表面上的平滑表面特征。 构成：包含金属钛或钛合金的植入物的电化学表面处理方法包括预处理包含金属钛或钛合金的植入物表面的过程; 通过电化学氧化预处理的植入物在植入物的表面上形成氧化物涂层膜; 并用酸性或碱性水溶液对所形成的氧化物涂膜进行后处理以获得均匀的孔分布，其中所述预处理方法包括使用丙酮或醇将所述植入物脱脂的步骤; 将脱脂的植入物在80℃下浸入浓度为30g / l的NaOH水溶液或KOH水溶液中5分钟之后，通过将植入物从水溶液中取出而从水溶液中取出植入物， 在含有浓度为61重量％的15毫升浓硝酸，浓度为49重量％的3毫升氢氟酸和82毫升蒸馏水的溶液中，将水洗的植入物在常温下酸洗5分钟 ，并用蒸馏水清洗植入物10分钟。

公开(公告)号：KR1020030062541A

公开(公告)日：2003-07-28

申请号：KR1020020002786

申请日：2002-01-17

Applicant: 한국과학기술연구원

Inventor： 이중기 ,  조병원 ,  조원일 ,  우주만 ,  김형선 ,  김운석 ,  박달근

IPC: H01M4/02

CPC classification number: H01M4/587 ,  C04B35/6268 ,  C04B35/62805 ,  C04B35/62807 ,  C04B35/62813 ,  C04B35/62818 ,  C04B35/62821 ,  C04B35/62826 ,  C04B35/62842 ,  C04B35/62897 ,  C04B41/009 ,  C04B41/4584 ,  C04B41/81 ,  C04B2111/00853 ,  C04B2235/3201 ,  C04B2235/3239 ,  C04B2235/3241 ,  C04B2235/3262 ,  C04B2235/3281 ,  C04B2235/3291 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/5248 ,  C23C26/00 ,  C23C30/00 ,  H01M4/133 ,  H01M4/366 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/624 ,  H01M10/0525 ,  Y10T29/49108 ,  Y10T29/49115 ,  C04B41/4543 ,  C04B41/455 ,  C04B41/5127 ,  C04B41/5144 ,  C04B41/5116 ,  C04B35/52

Abstract: PURPOSE: A carbon active material, its preparation method, a carbon negative electrode containing the active material and a lithium secondary battery containing the carbon active material are provided, to improve the conductivity, the high efficiency charge/discharge characteristic and the cycle lifetime characteristic of an electrode. CONSTITUTION: The carbon active material comprises a thin film or a cluster layer made of a metal or a metal oxide with a thickness of 1-300 nm on the surface. Preferably the metal in the metal or the metal oxide is selected from the group consisting of Li, Al, Sn, Bi, Si, Sb, Ni, Cu, Ti, V, Cr, Mn, Fe, Co, Ag, and their alloy; and the carbon is graphite, coke or hard carbon. The method comprises the steps of suspending a carbon particle at a temperature of 100 deg.C or less by using a gas to form a layer; spraying a metal salt solution to the suspended carbon particle layer to coat the carbon particle with the metal salt; and heating the coated carbon particle at a temperature of 200-800 deg.C under the gas condition selected from hydrogen, nitrogen and argon.

Abstract translation: 目的：提供碳活性材料及其制备方法，含有活性物质的碳负极和含有碳活性物质的锂二次电池，以提高导电性，高效率充放电特性和循环寿命特性 电极。 构成：碳活性物质由表面上厚度为1-300nm的金属或金属氧化物构成的薄膜或簇层构成。 金属或金属氧化物中的金属优选选自Li，Al，Sn，Bi，Si，Sb，Ni，Cu，Ti，V，Cr，Mn，Fe，Co，Ag及其合金 ; 碳是石墨，焦炭或硬碳。 该方法包括以下步骤：通过使用气体将碳颗粒悬浮在100℃或更低的温度下形成层; 将金属盐溶液喷洒到悬浮碳颗粒层上以用金属盐涂覆碳颗粒; 并在200-800℃的温度下，在选自氢，氮和氩的气体条件下加热涂覆的碳颗粒。

公开(公告)号：KR1020030019385A

公开(公告)日：2003-03-06

申请号：KR1020027015454

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 ,  H01M2/145 ,  H01M2/162 ,  H01M2/1673 ,  H01M10/052 ,  H01M10/056 ,  H01M10/0565

Abstract: PURPOSE: Provided are a novel composite polymer electrolyte, a lithium secondary battery comprising the composite polymer electrolyte and their fabrication methods. The composite polymer electrolyte has improved adhesion with electrodes, good mechanical strength, improved performance at low and high temperatures, improved compatibility with organic electrolytes of lithium secondary battery and it can be applied to the manufacture of lithium secondary batteries. CONSTITUTION: The composite polymer electrolyte comprises super fine fibrous porous polymer electrolyte matrix with particles having diameter of 1 - 3000 nm, polymers and lithium salt-dissolved organic electrolyte solutions incorporated into the porous polymer electrolyte matrix. The fabrication method of the composite polymer electrolyte comprises the steps of: obtaining two or more polymeric solutions by dissolving two or more polymers which can be formed into fibers in a mixture of a plasticizer and an organic solvent respectively; filling the obtained polymeric solutions into different barrels of an electrospinning apparatus respectively and then discharging the polymeric solutions onto a substrate including a metal plate, a Mylar film and electrodes with different nozzles charged with a high voltage, to generate polymer electrolyte matrices in a state that the two or more polymer fibers are entangled with each other respectively; and injecting a polymer electrolyte solution containing a polymer and an organic electrolyte solution into the polymer electrolyte matrices. The lithium secondary battery comprises the composite polymer electrolyte and its fabrication method comprises the steps of: inserting the composite polymer electrolyte between an anode and a cathode; inserting the resulting plate into a battery casing after laminating or rolling it; injecting an organic electrolyte solution into the battery casing; and sealing the casing.

Abstract translation: 目的：提供一种新型复合聚合物电解质，包含复合聚合物电解质的锂二次电池及其制造方法。 复合聚合物电解质具有改善的与电极的粘附性，良好的机械强度，在低温和高温下的改进性能，改善了与锂二次电池的有机电解质的相容性，并且可以应用于锂二次电池的制造。 构成：复合聚合物电解质包括掺入多孔聚合物电解质基质中的超细纤维多孔聚合物电解质基质，其具有直径为1至3000nm的颗粒，聚合物和锂盐溶解的有机电解质溶液。 复合聚合物电解质的制造方法包括以下步骤：通过将可形成纤维的两种或更多种聚合物分别溶解在增塑剂和有机溶剂的混合物中来获得两种或多种聚合物溶液; 将获得的聚合物溶液分别填充到不同的电纺丝装置的筒中，然后将聚合物溶液排放到包括金属板，聚酯薄膜和具有加高电压的不同喷嘴的电极的基底上，以产生聚合物电解质基质， 两种或多种聚合物纤维分别缠结在一起; 并将含有聚合物和有机电解质溶液的聚合物电解质溶液注入聚合物电解质基质中。 锂二次电池包括复合高分子电解质，其制造方法包括以下步骤：在阳极和阴极之间插入复合聚合物电解质; 将所得的板材在层压或轧制之后将其插入电池壳体中; 将有机电解质溶液注入到电池壳体中; 并密封外壳。

公开(公告)号：KR1020020088418A

公开(公告)日：2002-11-27

申请号：KR1020027013111

申请日：2001-01-31

Applicant: 한국과학기술연구원

Inventor： 조병원 ,  조원일 ,  김형선 ,  김운석 ,  남상철 ,  임영창

IPC: H01M4/38

Abstract: PURPOSE: A lithium electrode, its preparation method and a lithium battery using the electrode are provided, to improve the energy density of a battery and the charge/discharge efficiency and to reduce the danger of explosion. CONSTITUTION: The lithium electrode contains the lithium particle or the lithium alloy particle whose surface is coated with metal or metal oxide. Preferably the metal and the metal oxide are selected from the group consisting of Ni, Cu, Ti, Cr, Mn, Fe, Co, Zn, Mo, W, Ag, Au, Ru, Pt, Ir, Al, Sn, Bi, Sb, their alloys and their oxides; and 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 coating metal or metal oxide on the surface of the lithium particle or the lithium alloy particle; and compressing the particle directly on the current collector, or making the paste with an organic solvent and/or a binder, coating it on the current collector, drying and compressing it.

Abstract translation: 目的：提供锂电极及其制备方法和使用电极的锂电池，以提高电池的能量密度和充放电效率，并降低爆炸危险。 构成：锂电极含有表面被金属或金属氧化物覆盖的锂粒子或锂合金粒子。 优选地，金属和金属氧化物选自Ni，Cu，Ti，Cr，Mn，Fe，Co，Zn，Mo，W，Ag，Au，Ru，Pt，Ir，Al，Sn，Bi， Sb，它们的合金及其氧化物; 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。 该方法包括在锂颗粒或锂合金颗粒的表面上涂覆金属或金属氧化物的步骤; 并直接在集电体上压缩颗粒，或者用有机溶剂和/或粘合剂制成糊料，将其涂布在集电器上，干燥并压缩。

公开(公告)号：KR1020020088417A

公开(公告)日：2002-11-27

申请号：KR1020027013110

申请日：2001-01-31

Applicant: 한국과학기술연구원

Inventor： 조병원 ,  조원일 ,  김형선 ,  김운석 ,  남상철

IPC: H01M4/38

Abstract: PURPOSE: A lithium electrode using a porous 3D current collector, its preparation method and a lithium battery using the electrode are provided, to improve the utilization rate, the cycle lifetime and the charge/discharge efficiency of a battery. CONSTITUTION: The lithium electrode contains a porous 3D current collector and lithium or lithium alloy, and the lithium or the lithium alloy id dispersed into the pore of the 3D current collector. Preferably the current collector is made of the material 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. Optionally the lithium electrode comprises further metal inside of the pore of the current collector, and preferably 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.

Abstract translation: 目的：提供使用多孔3D集电器的锂电极及其制备方法和使用电极的锂电池，以提高电池的利用率，循环寿命和充电/放电效率。 构成：锂电极含有多孔的3D集电器和锂或锂合金，并且锂或锂合金id分散在3D集电器的孔中。 优选地，集电体由选自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。 任选地，锂电极在集电体的孔内部还包含金属，优选金属选自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。

公开(公告)号：KR100359054B1

公开(公告)日：2002-11-07

申请号：KR1020000021490

申请日：2000-04-22

Applicant: 한국과학기술연구원

Inventor： 윤경석 ,  조병원 ,  조원일 ,  김형선 ,  김운석 ,  이승원 ,  강태혁 ,  김계민

IPC: H01M4/36

Abstract: 본 발명은 양극활물질과, 도전재 및/또는 결합제를 포함하는 통상의 리튬이차전지용 양극을 기저층으로 갖고, 상기 기저층 상에 피복된 도전재 및 결합제를 포함하고, 그 중량비가 10 - 100 배인 도전층을 포함하는 리튬이차전지용 양극, 그 제조방법 및 이를 포함하는 리튬이차전지를 제공한다.
본 발명의 제조방법은 양극활물질과, 도전재 및/또는 결합제를 포함하고, 집전체 상에 코팅, 건조 및 압연된 리튬이차전지용 양극 상에 도전재의 성분이 강화된 도전성 슬러리를 코팅, 건조 및 압연시키는 첫번째 방법과, 양극활물질과, 도전재 및/또는 결합제를 포함하는 혼합물을 집전체 상에 코팅시키고, 그 위에 도전재 성분이 강화된 도전성 슬러리를 코팅시킨 후, 건조 및 압연시키는 두번째 방법이 있다.
도전성 슬러리로 표면처리된 본 발명의 양극에 의해 전극의 전위분포 및 계면 특성이 향상되었고, 이것에 의해 리튬이차전지의 용량, 고율 충방전특성 및 수명특성이 크게 향상되었다. 따라서, 도전성 슬러리로 표면처리된 본 발명의 양극을 포함하는 리튬이차전지는 각종 소형 전자기기, 통신기기 및 전기자동차의 전원용 등 다양한 산업분야에 응용될 수 있다.

公开(公告)号：KR100310034B1

公开(公告)日：2002-02-28

申请号：KR1019980022954

申请日：1998-06-18

Applicant: 한국과학기술연구원

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

IPC: H01M10/05

Abstract: 본발명은 10∼90중량%의 PAN계 화합물, 1∼50중량%의 PVC계 화합물 및 1∼50중량%의 PVdF계 화합물을 혼합하여 이루어지는 PAN계/PVC계/PVdF계 혼합물을 포함하는 것을 특징으로 하는 삼성분계 고체고분자 전해질의 제조방법 및 이를 이용한 리튬고분자 전지에 관한 것으로, 본발명에 의한 고체고분자 전해질들은 이온전도도가 리튬 고분자전지용 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 고체고분자 전해질로서 매우 적합한 것으로 나타났다.

公开(公告)号：KR1020010097422A

公开(公告)日：2001-11-08

申请号：KR1020000021490

申请日：2000-04-22

Applicant: 한국과학기술연구원

Inventor： 윤경석 ,  조병원 ,  조원일 ,  김형선 ,  김운석 ,  이승원 ,  강태혁 ,  김계민

IPC: H01M4/36

Abstract: 본 발명은 양극활물질 및/또는 도전재 및/또는 결합제를 포함하는 통상의 리튬이차전지용 양극을 기저층으로 갖고, 상기 기저층 상에 피복된 도전재 및 결합제를 포함하고, 그 중량비가 10 - 100 배인 도전층을 포함하는 리튬이차전지용 양극, 그 제조방법 및 이를 포함하는 리튬이차전지를 제공한다.
본 발명의 제조방법은 양극활물질 및/또는 도전재 및/또는 결합제를 포함하고, 집전체 상에 코팅, 건조 및 압연된 리튬이차전지용 양극 상에 도전재의 성분이 강화된 도전성 슬러리를 코팅, 건조 및 압연시키는 첫번째 방법과, 양극활물질 및/또는 도전재 및/또는 결합제를 포함하는 혼합물을 집전체 상에 코팅시키고, 그 위에 도전재 성분이 강화된 도전성 슬러리를 코팅시킨 후, 건조 및 압연시키는 두번째 방법이 있다.
도전성 슬러리로 표면처리된 본 발명의 양극에 의해 전극의 전위분포 및 계면 특성이 향상되었고, 이것에 의해 리튬이차전지의 용량, 고율 충방전특성 및 수명특성이 크게 향상되었다. 따라서, 도전성 슬러리로 표면처리된 본 발명의 양극을 포함하는 리튬이차전지는 각종 소형 전자기기, 통신기기 및 전기자동차의 전원용 등 다양한 산업분야에 응용될 수 있다.

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。