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公开(公告)号：KR1020040009381A
公开(公告)日：2004-01-31
申请号：KR1020020043309
申请日：2002-07-23
Applicant: 한국과학기술원
Abstract: PURPOSE: A positive electrode containing a carbon nanotube for a lithium sulfur secondary battery and a lithium sulfur secondary battery containing the positive electrode are provided, to improve the lifetime of a lithium sulfur secondary battery operating at a room temperature. CONSTITUTION: The positive electrode comprises 20-40 wt% of a carbon nanotube instead of spherical carbon black as a current collector. Preferably the carbon nanotube does not a linear shape, is not aligned and is tangled. More preferably the carbon nanotube has a diameter of 3-30 nm and a length of 1-10 micrometers.
Abstract translation: 目的：提供含有锂硫二次电池用碳纳米管和含有正极的锂硫二次电池的正极，以提高在室温下工作的锂硫二次电池的寿命。 构成：正极含有20〜40重量％的碳纳米管代替球形炭黑作为集电体。 优选地，碳纳米管不是线性形状，不对齐并且缠结。 更优选碳纳米管的直径为3-30nm，长度为1-10微米。
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公开(公告)号：KR100406978B1
公开(公告)日：2003-11-28
申请号：KR1020010025412
申请日：2001-05-10
Applicant: 한국과학기술원
IPC: F25B17/12
Abstract: PURPOSE: A metal hydride heat pump(MHHP) cooling system using waste heat and vacuum pump and method of the same are provided to improve cooling performance of the cooling system. CONSTITUTION: A system includes a low-temperature reaction part(10) using low-temperature reactionary metallic alloy for hydrogen storage storing and discharging hydrogen at relative low temperature; a high-temperature reaction part(20) using high-temperature reactionary metallic alloy for hydrogen storage storing and discharging hydrogen at temperature relatively higher than the low-temperature reaction part; and a vacuum pump(32) making an inside of one of the low-temperature reaction part and the high-temperature reaction part vacuous to forcibly bring hydrogen stored in the other reaction part.
Abstract translation: 目的：提供一种使用废热和真空泵的金属氢化物热泵（MHHP）冷却系统及其方法，以改善冷却系统的冷却性能。 一种系统包括一个低温反应部分（10），它使用低温反应金属合金储氢并在相对较低的温度下储氢; 高温反应部件（20），其使用高温反应金属合金进行储氢并在比所述低温反应部件高的温度下储存和排出氢气; 以及真空泵（32），其使低温反应部件和高温反应部件中的一个的内部真空，以强制性地将储存在另一个反应部件中的氢气带出。
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公开(公告)号：KR1020030025675A
公开(公告)日：2003-03-29
申请号：KR1020010058837
申请日：2001-09-22
Applicant: 한국과학기술원
IPC: F25B17/12
Abstract: PURPOSE: A method for heating and cooling using CDMHHP(Compressor-Driven Metal Hydride Heat Pump) system and system of the same are provided to increase moving speed of hydrogen. CONSTITUTION: A system includes two reaction tubes(10,20) charged with metal hydride; reaction parts(11,21) including the reaction tubes and an outside atmosphere system; a compressor(30) forcibly transport hydrogen charged in the reaction tubes; and an adapter(40) installed between the compressor and the reaction tubes to be fluidically connected so as to provide a moving path for hydrogen. The adapter includes a first hydrogen moving path by the compressor and a second hydrogen moving path by difference of concentration of hydrogen between the reaction tubes. A control part(50) controls driving of the compressor, opening and closing of valves(60,61) and working of a wind direction guiding plate(70).
Abstract translation: 目的：提供使用CDMHHP（压缩机驱动的金属氢化物热泵）系统及其系统进行加热和冷却的方法，以提高氢的移动速度。 构成：系统包括装有金属氢化物的两个反应管（10,20） 包括反应管和外部气氛系统的反应部分（11,21）; 压缩机（30）强制地输送装在反应管中的氢; 以及安装在压缩机和反应管之间以将流体连接以便提供用于氢的移动路径的适配器（40）。 适配器包括通过压缩机的第一氢气移动路径和通过反应管之间的氢浓度差异的第二氢气移动路径。 控制部件（50）控制压缩机的驱动，阀门（60,61）的打开和关闭以及风向导向板（70）的工作。
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公开(公告)号：KR100269515B1
公开(公告)日：2000-10-16
申请号：KR1019980015197
申请日：1998-04-28
Applicant: 한국과학기술원
IPC: H01M4/46
Abstract: PURPOSE: A method for producing cathode material for rechargeable nickel/hydrogen storage alloy battery is provided for improving cycle life of the magnesium-based alloy by a sintering and mechanical grinding method. CONSTITUTION: The method for producing cathode material for rechargeable nickel/hydrogen storage alloy (Ni/MH) battery comprises mechanically grinding surface of MgNi alloy to improve its property; mixing Ni or Cu powders to the improved alloy to cool and compress; and producing the final material by a sintering process to result in the improvement of cycle life of high capacity magnesium-based alloy electrode. The cathode material has frequently higher hydrogen storage capacity of about 510mAh/g simultaneously with the improvement of cycle life at recharging/discharging the battery.
Abstract translation: 目的：提供一种生产用于可再充电镍/氢储存合金电池的阴极材料的方法，用于通过烧结和机械研磨方法改善镁基合金的循环寿命。 构成：可再充电镍/氢存储合金（Ni / MH）电池的阴极材料的制造方法包括机械研磨MgNi合金的表面以改善其性能; 将Ni或Cu粉末混合到改进的合金中以冷却和压缩; 并通过烧结工艺生产最终材料，从而提高高容量镁基合金电极的循环寿命。 随着电池充电/放电循环寿命的提高，阴极材料的氢气存储容量通常更高，约为510mAh / g。
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公开(公告)号：KR100406980B1
公开(公告)日：2003-11-28
申请号：KR1020010039450
申请日：2001-07-03
Applicant: 한국과학기술원
IPC: F25B17/12
Abstract: PURPOSE: A CDMHHP(Compressor-Driven Metal Hydride Heat Pump) cooling system using two of different metal hydrides is provided to increase energy efficiency. CONSTITUTION: A cooling system includes a low pressure reaction part(10) comprising a low pressure reactor(12) using low pressure reactionary metal hydride storing and discharging hydrogen at relatively low pressure and a first blower(14) supplying the low pressure reactor with air to be cooled; a high pressure reaction part(20) comprising a high pressure reactor(22) using high pressure reactionary metal hydride storing and discharging hydrogen at higher pressure relatively to the low pressure reactor and a second blower(24) supplying the high pressure reactor with air to be cooled; a connecting pipe(32) connecting the low pressure reaction part and the high pressure reaction part to transfer hydrogen; a first valve(30a) connected to the middle of the connecting pipe to open and close moving path of hydrogen; a hydrogen transfer device, a compressor(30) having an inlet and an outlet connected to both ends of the first valve, respectively; a second valve(30b) and a third valve(30c) connected between both of the ends of the first valve and the inlet and the outlet of the compressor, respectively, to open and close moving path of hydrogen; and a control part(35).
Abstract translation: 目的：提供使用两种不同金属氢化物的CDMHHP（压缩机驱动金属氢化物热泵）冷却系统，以提高能源效率。 一种冷却系统包括一个低压反应部件（10），该低压反应部件包括一个低压反应器（12），该低压反应器使用低压反应金属氢化物储存和排放较低压力的氢气，以及一个第一鼓风机（14），向该低压反应器供应空气 被冷却; 包括高压反应器（22）的高压反应部件（20），所述高压反应器使用高压反应金属氢化物相对于所述低压反应器在较高压力下储存和排出氢气;以及第二鼓风机（24），其向所述高压反应器供应空气以 被冷却; 连接低压反应部分和高压反应部分以传输氢的连接管（32） 第一阀（30a），连接到连接管的中间以打开和关闭氢的移动路径; 氢传输装置，压缩机（30），其具有分别连接到所述第一阀的两端的入口和出口; 第二阀（30b）和第三阀（30c），分别连接在第一阀的两端和压缩机的入口和出口之间，以打开和关闭氢的移动路径; 和控制部分（35）。
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Patent Agency Ranking
公开(公告)号：KR100406979B1
公开(公告)日：2003-11-28
申请号：KR1020010025926
申请日：2001-05-11
Applicant: 한국과학기술원
IPC: H01M4/60
Abstract: PURPOSE: Provided are an electrode for lithium secondary cell using nickel/sulfur compound as electrode active material of lithium secondary cell, and a method for producing the same. CONSTITUTION: The method for producing an electrode for lithium secondary cell comprises the steps of (i) weighing nickel/sulfur compound as an active material, carbon powder as an electric conductor, an ion conductor, and a binder, and stirring the materials in solvent to form slurry, and (ii) drying the slurry to obtain an anode. The nickel/sulfur compound is at least one of NiS, NiS2, Ni7S6, and Ni3S2. The binder is polyethylene oxide when anode for high temperature is to be produced, or polyvinylidene fluoride when anode for ambient temperature is to be produced.
Abstract translation: 目的：提供一种使用镍/硫化合物作为锂二次电池的电极活性材料的锂二次电池用电极及其制造方法。 构成：锂二次电池用电极的制造方法包括以下工序：（i）称量作为活性物质的镍/硫化合物，作为导电体的碳粉末，离子导体和粘合剂，搅拌溶剂 以形成浆液，和（ii）干燥浆液以获得阳极。 镍/硫化合物是NiS，NiS 2，Ni 7 S 6和Ni 3 S 2中的至少一种。 当生产用于高温的阳极时，粘合剂是聚环氧乙烷，或当要生产用于环境温度的阳极时，是聚偏二氟乙烯。
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公开(公告)号：KR100444761B1
公开(公告)日：2004-08-16
申请号：KR1020020024532
申请日：2002-05-03
Applicant: 한국과학기술원
IPC: H01M4/60
Abstract: PURPOSE: Provided is a lithium sulfur secondary battery having improved lifetime at ordinary temperature, which contains poly(ethyleneglycol)dimethyl ether(PEGDME) as an electrolyte and a mesh- or foam-type metal as a current collector of a sulfur cathode. CONSTITUTION: The lithium sulfur secondary battery contains the PEGDME as the electrolyte and the mesh- or foam-type metal as the current collector of the sulfur cathode. The PEGDME has an average molecular weight of 500-750 and contains 0.1-1M of trifluoro methane sulfonate imide. And the metal used as the current collector of the cathode is nickel or aluminum.
Abstract translation: 目的：提供一种在常温下具有改善的寿命的锂硫二次电池，其包含作为电解质的聚（乙二醇）二甲醚（PEGDME）和作为硫阴极的集电器的网状或泡沫型金属。 构成：锂硫二次电池含有作为电解质的PEGDME和作为硫阴极集流体的网状或泡沫型金属。 PEGDME的平均分子量为500-750，并含有0.1-1M的三氟甲烷磺酸盐酰亚胺。 用作阴极集流体的金属是镍或铝。
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公开(公告)号：KR1020030086151A
公开(公告)日：2003-11-07
申请号：KR1020020024532
申请日：2002-05-03
Applicant: 한국과학기술원
IPC: H01M4/60
Abstract: PURPOSE: Provided is a lithium sulfur secondary battery having improved lifetime at ordinary temperature, which contains poly(ethyleneglycol)dimethyl ether(PEGDME) as an electrolyte and a mesh- or foam-type metal as a current collector of a sulfur cathode. CONSTITUTION: The lithium sulfur secondary battery contains the PEGDME as the electrolyte and the mesh- or foam-type metal as the current collector of the sulfur cathode. The PEGDME has an average molecular weight of 500-750 and contains 0.1-1M of trifluoro methane sulfonate imide. And the metal used as the current collector of the cathode is nickel or aluminum.
Abstract translation: 目的：提供一种在常温下具有改善寿命的锂硫二次电池，其包含作为电解质的聚（乙二醇）二甲醚（PEGDME）和作为硫阴极的集电体的网状泡沫型金属。 构成：锂硫二次电池含有作为电解质的PEGDME和作为硫阴极的集电体的网状泡沫型金属。 PEGDME的平均分子量为500-750，含有0.1-1M的三氟甲磺酸酰亚胺。 用作阴极集电体的金属是镍或铝。
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公开(公告)号：KR100399339B1
公开(公告)日：2003-09-26
申请号：KR1020010023537
申请日：2001-04-30
Applicant: 한국과학기술원
IPC: H01M4/64
Abstract: PURPOSE: A negative electrode for a Ni/MH secondary battery, its preparation method and a negative electrode current collector composition are provided, to improve the surface characteristic of an electrode, thereby enhancing the internal pressure, the energy density per unit volume and the high speed discharge efficiency of an electrode. CONSTITUTION: The current collector composition comprises 50 wt% of Cu, 50 wt% or less of carbon black, and 50 wt% or less of filament-shaped nickel powder of high surface area. The negative electrode comprises a hydrogen storing alloy, a binder and the current collector prepared from the current collector composition. Preferably the hydrogen storing alloy is a Zr-based hydrogen storing alloy powder and has a particle size of 400 mesh(38 micrometers or less); and the binder comprises a binder of styrene butadiene rubber and a thickener of hydroxypropylmethyl cellulose.
Abstract translation: 目的：提供用于Ni / MH二次电池的负极，其制备方法和负极集电体组合物，以改善电极的表面特性，由此提高内部压力，单位体积的能量密度和高 高速放电效率的电极。 构成：集电体组合物包含50重量％的Cu，50重量％或更少的炭黑和50重量％或更少的高表面积的丝状镍粉。 负极包含储氢合金，粘合剂和由集电组合物制备的集电器。 储氢合金优选为Zr系储氢合金粉末，粒径为400目（38μm以下）。 并且粘合剂包含苯乙烯丁二烯橡胶的粘合剂和羟丙基甲基纤维素的增稠剂。
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公开(公告)号：KR100377540B1
公开(公告)日：2003-03-26
申请号：KR1020000044367
申请日：2000-07-31
Applicant: 한국과학기술원
IPC: H01M4/02
Abstract: 본 발명은 리튬이차전지 음극용 탄소재의 코팅방법에 관한 것으로 보다 상세하게는 리튬이온 이차전지의 부극용 활물질로서 주로 사용하는 고결정질 탄소재에 우수한 표면특성의 탄소재를 코팅함으로써 리튬이온 이차전지의 고에너지 밀도화, 고성능화를 위한 리튬이차전지 음극용 탄소재의 코팅방법에 관한 것이다.
본 발명은 기존의 CVD법을 응용한 텀블링(tumbling) CVD법을 사용하여 우수한 표면특성을 갖는 탄소재를 고결정질 탄소재의 표면에 코팅함으로써 고결정질 탄소계의 표면특성에 의해 첫번째 충방전사이클에서 나타나는 큰 비가역용량과 프로필렌 카보네이트(propylene carbonate, PC)계 전해질과의 낮은 친화성(poor compat ibility)과 같은 단점을 해결하여 고결정질 탄소재의 우수한 벌크(bulk) 특성과 고결정질 탄소재의 표면에 코팅된 탄소재의 우수한 표면특성을 동시에 이용함으로써 고용량, 고성능의 리튬이온 이차전지를 위해서 음극 활물질로 사용할 수 있는 탄소재의 코팅방법을 제공하는 것을 목적으로 한다.Abstract translation: 目的：提供一种用于锂离子二次电池的正极活性物质的高结晶性碳材料用表面特性优异的碳材料被覆的方法，锂离子二次电池具有高能量密度和高性能。 组成：高结晶碳材料用热解碳化学气相沉积法通过进行烃气的热分解而涂覆有热解碳，其中高结晶碳材料是选自天然石墨，基什石墨， SFG系列，高度取向的热解石墨，中间相沥青基碳纤维（MPCF）和MCMB系列，烃类气体选自LPG，甲烷，丁烷和苯。
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