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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
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。
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公开(公告)号：KR100354455B1
公开(公告)日：2002-09-30
申请号：KR1019990053817
申请日：1999-11-30
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.
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23.发明公开
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
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。
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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
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.
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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
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。
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Patent Agency Ranking
公开(公告)号：KR100275788B1
公开(公告)日：2000-12-15
申请号：KR1019980019241
申请日：1998-05-27
Applicant: 한국과학기술연구원
IPC: H01M10/05
CPC classification number: H01M10/0525 , H01M4/1391 , H01M4/1393 , H01M10/0565 , H01M10/0585
Abstract: PURPOSE: A solid polymer electrolyte and method for producing lithium polymer battery are provided for enhancing adhesiveness and mechanical stability of laminate formed by the solid electrolyte without alteration of ionic conductivity by blending PAN and PVdF polymers. CONSTITUTION: The solid polymer electrolyte is produced by mixing PAN and PVdF polymers as the starting materials in a weight ratio of 10:1-1:5, blending it with the organic solvent, SiO2 and the plasticizer; heating the resultant mixture to form solid polymer electrolyte matrix; casting the matrix. The amount of organic solvent added is 1-5 times the amount of the starting materials. The amount of SiO2 is 1-20 wt.% based on the weight of the starting materials. The heating process is carried out at 110-180 deg.C. for 10 minutes to 2 hours. The lithium polymer battery is produced by mixing the solid polymer electrolyte together with the plasticizer to prepare the combined anode and cathode and laminating the electrolyte to form the final product.
Abstract translation: 目的：提供一种固体聚合物电解质和锂聚合物电池的制造方法，用于通过混合PAN和PVdF聚合物来提高由固体电解质形成的层压体的粘合性和机械稳定性，而不会改变离子导电性。 构成：固体高分子电解质是通过将PAN和PVdF聚合物作为起始原料以10：1-1：5的重量比混合而制得的，与有机溶剂，SiO 2和增塑剂混合; 加热所得混合物以形成固体聚合物电解质基质; 铸造矩阵。 有机溶剂的添加量为原料量的1-5倍。 SiO 2的量基于原料的重量为1-20重量％。 加热过程在110-180℃进行。 10分钟至2小时。 锂聚合物电池通过将固体聚合物电解质与增塑剂混合以制备组合的阳极和阴极并层压电解质以形成最终产品来制备。
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公开(公告)号：KR1020000002281A
公开(公告)日：2000-01-15
申请号：KR1019980022954
申请日：1998-06-18
Applicant: 한국과학기술연구원
IPC: H01M10/05
CPC classification number: H01M10/0525 , H01M4/1391 , H01M4/1393 , H01M10/0565 , H01M10/0585
Abstract: PURPOSE: A manufacturing method for a ternary system solid high molecule electrolyte is provided to easily manufacture a battery by using good adhesive strength and mechanical strength and to improve an electrode capacity and cycle life span characteristic. CONSTITUTION: A ternary system solid high molecule electrolyte is manufactured by; performing a high molecule blending after mixing a plasticizer and an organic solvent to a Poly Acrylonitrile(PAN) system/a Poly Vinyl Chloride(PVC) system/a Poly Vinylidene Fluoride(PVdF) system compound consist of 10¯90 wt% of PAN system compound, 1¯50 wt% of PVC system compound, and 1¯50 wt% of PVdF system compound; forming a matrix of the solid high molecule electrolyte; casting and drying for obtaining a solid high molecule film; and injecting a lithium chloride dissolved organic solvent electrolyte.
Abstract translation: 目的：提供三元系统固体高分子电解质的制造方法，通过使用良好的粘合强度和机械强度容易地制造电池，并提高电极容量和循环寿命特性。 构成：三元系固体高分子电解质由 在将聚合丙烯腈（PAN）系统/聚氯乙烯（PVC）系统/聚偏二氟乙烯（PVdF）系统化合物混合增塑剂和有机溶剂之后进行高分子共混，由10〜90wt％的PAN体系 化合物，1〜50重量％的PVC系化合物和1〜50重量％的PVdF系化合物; 形成固体高分子电解质的基质; 铸造和干燥以获得固体高分子膜; 并注入氯化锂溶解的有机溶剂电解质。
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公开(公告)号：KR1019990086308A
公开(公告)日：1999-12-15
申请号：KR1019980019243
申请日：1998-05-27
Applicant: 한국과학기술연구원
IPC: H01M4/96
Abstract: 본 발명은 카본 전극의 전리튬화 방법과 이를 이용한 리튬 이차전지 제조방법에 관한 것으로, 종래의 리튬 이차전지는 음극으로 사용된 카본 전극이 피막형성 반응의 비가역적 반응으로 리튬 이온의 소모를 가져와 전지의 용량을 감소시키는 역효과와 싸이클 수명이 저하하게 되는 문제점이 있는 바, 본 발명은 카본 전극과 리튬 금속을 저항으로 연결하거나 직접 접촉시킨 상태에서 온도와 전해질의 이온전도도를 변화시켜서 카본 전극이 리튬화 되는 속도와 양을 조절하고, 리튬화 후에 일정 온도와 시간 동안 안정화 시킴으로써 카본 전극 표면상에 안정한 피막을 형성하여 카본 전극의 가역성을 향상시키고, 리튬화된 카본 전극으로 리튬 이차전지를 제조하여, 카본 전극에서의 비가역용량에 의한 용량저하를 방지함으로써 용량증가와 충방전시 충� �전 효율 문제로 인하여 소모되는 리튬의 양을 보충해줌으로써 싸이클 수명을 향상시키도록 한 것이다.
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