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    • 12. 发明授权
    • 고면적의 Ni 분말을 이용한 Ni/MH 2차 전지용 음극의 제조방법
    • 고면적의Ni을을이용한Ni / MH 2차전지용음극의제조방법
    • KR100399339B1
    • 2003-09-26
    • KR1020010023537
    • 2001-04-30
    • 한국과학기술원
    • 이재영이상민이호한상철김승회김진호
    • H01M4/64
    • 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.
    • 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。
    • 14. 发明公开
    • 폐열 및 진공펌프를 이용한 MHHP 냉각 시스템 및 그방법
    • 使用废热和真空泵的金属氢化物热泵冷却系统及其方法
    • KR1020020085715A
    • 2002-11-16
    • KR1020010025412
    • 2001-05-10
    • 한국과학기술원
    • 이재영한상철박정건이상민
    • F25B17/12
    • 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.
    • 目的:提供使用余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。 构成:一个系统包括一个低温反应部分(10),使用低温反应金属合金在相对低的温度下储存和排出氢; 使用高温反应性金属合金在相对高于低温反应部分的温度下储存和排出氢的高温反应部分(20); 和使真空泵(32)内的低温反应部和高温反应部分的一部分真空地强制地吸入存储在另一个反应部分中的氢。
    • 15. 发明公开
    • 리튬이차전지의 양극전극용 유황전극 및 그 제조방법
    • 锂二次电池正极的硫电极及其制备方法
    • KR1020020084618A
    • 2002-11-09
    • KR1020010024057
    • 2001-05-03
    • 한국과학기술원
    • 이재영한상철김현석이상민이호박정건김기태강용묵안효준
    • H01M4/60
    • PURPOSE: A sulfur electrode for the positive electrode of a lithium secondary battery and its preparation method are provided to improve the lifetime of a positive electrode by employing sulfur as a lubricant. CONSTITUTION: The method comprises the steps of ball-milling sulfur powder as a lubricant and carbon powder and nickel powder as a conductive material for 12 hours or more under the inert atmosphere to mix them; adding the mixture and a binder to a solvent and stirring the solution to prepare slurry; and drying the slurry to prepare a sulfur positive electrode. The content of the sulfur powder is 10-90 wt% and the content of the nickel powder is 10-30 wt% based on the total weight of the sulfur electrode. Preferably the slurry comprises further a lithium salt and the lithium salt is LiCF3SO3. The nickel powder has a particle size of 30 micrometers or less, and preferably 0.1-10 micrometers. The solvent is preferably N-methyl-2-pyrrolidone.
    • 目的:提供一种用于锂二次电池正极的硫电极及其制备方法,以通过使用硫作为润滑剂来提高正极寿命。 构成:该方法包括以下步骤:在惰性气氛下将硫粉作为润滑剂和碳粉末和镍粉作为导电材料进行12小时以上的混合; 将混合物和粘合剂加入溶剂中并搅拌该溶液以制备浆料; 并干燥浆料以制备硫正电极。 硫粉的含量为10-90重量%,镍粉的含量为硫电极总重量的10-30重量%。 优选地,浆料还包含锂盐,锂盐是LiCF 3 SO 3。 镍粉末的粒径为30微米以下,优选为0.1〜10微米。 溶剂优选为N-甲基-2-吡咯烷酮。
    • 18. 发明公开
    • 판상형 Ni을 이용한 Ni/MH 2차 전지용수소저장합금의 표면 개량방법
    • 使用FLAKE型NI改善NI / MH二次电池氢存储金属合金表面的方法
    • KR1020010047382A
    • 2001-06-15
    • KR1019990051580
    • 1999-11-19
    • 한국과학기술원
    • 이재영유지상김승회이상민이호박정건
    • C22C1/04
    • B22F1/0055B22F9/04B22F2009/041B22F2009/043B22F2998/00B22F2999/00C01B3/0031C01B3/0078C22C1/04H01M4/383Y02E60/327B22F1/0003
    • PURPOSE: A method for improving the surface of metallic alloys for hydrogen storage for a Ni/MH secondary battery using flake type Ni is provided to improve various performance and the life cycle of an electrode and increase the discharging amount of the electrode by improving the surface characteristics of the metallic alloys for hydrogen storage using a flake type Ni of which surface area is larger than that of ordinary spherical Ni powder. CONSTITUTION: In a method for improving the surface characteristics of AB2 type and AB type metallic alloys for hydrogen storage, the method comprises the process of improving the surface characteristics of the metallic alloys for hydrogen storage by mixing a flake type metallic powder with the AB2 type and AB type metallic alloys for hydrogen storage before ball milling the mixture, or using the flake type metallic powder as a current collector, wherein the flake type metallic powder is one metallic powder selected from a flake type Ni, flake type Cu, flake type palladium, or flake type Cr, wherein a Spex mill or an attritor mill is used in the ball milling, and wherein the AB type metallic alloys for hydrogen storage is a V-Ti based alloy, and the AB2 type metallic alloys for hydrogen storage is a Zr based alloy or a Ti based alloy.
    • 目的:提供使用薄片型Ni的Ni / MH二次电池用于储氢的金属合金的表面改性方法,以改善电极的各种性能和寿命,并通过改善表面来增加电极的放电量 使用表面积大于普通球形Ni粉末的薄片型Ni的储氢用金属合金的特性。 构成:在用于改善用于储氢的AB型和AB型金属合金的表面特性的方法中,该方法包括通过将片状金属粉末与AB2型混合来改善用于储氢的金属合金的表面特性的方法 和AB型金属合金,用于在球磨前混合物中的氢储存,或者使用片状金属粉末作为集电体,其中,片状金属粉末是选自片状Ni,片状Cu,片状钯 或片状Cr,其中在球磨中使用Spex磨机或磨碎机,其中用于储氢的AB型金属合金是V-Ti基合金,并且用于储氢的AB2型金属合金是 Zr基合金或Ti基合金。
    • 19. 发明授权
    • 미세 구멍 가공 기능을 가진 3D 프린터 및 이를 이용하여 미세 구멍을 가공하는 방법
    • KR102210719B1
    • 2021-02-02
    • KR1020190094152
    • 2019-08-02
    • 한국과학기술원
    • 홍정욱고권환이상민
    • B29C64/277B29C64/214B29C64/106B29C64/245B33Y30/00B33Y10/00
    • 본발명의실시예에따른미세구멍가공기능을가진 3D 프린터는조형판, 제1 레이저부, 제2 레이저부를포함한다. 조형판은수조에담긴광경화성액상수지속에배치된다. 제1 레이저부는수조및 광경화성액상수지상에배치되고, 조형판상의광경화성액상수지에제1 빔을조사하여광경화성액상수지를조형판에한 층씩경화하고적층시켜구조물을형성한다. 제2 레이저부는제1 레이저부와소정거리이격되어배치되고, 조형판에광경화성액상수지가경화되어적층된구조물에제2 빔을조사하여미세구멍을형성한다. 제1 빔은경화용자외선레이저빔이고, 제2 빔은레이저드릴링기능을가지는자외선고체레이저빔이다. 본발명의실시예들에따른미세구멍가공기능을가진 3D 프린터를이용하여미세구멍을가공하는방법은, 출력하고자하는구조물의 x-y 평면상의미세구멍의위치가 z축방향의제1 지점까지일정하게가공되도록설정된경우에있어서, 출력하고자하는구조물의모델링파일이 3D 프린터에입력되면제1 레이저부가제1 빔을조형판에조사하고, 이에따라수조에담겨있는광경화성액상수지가한 층씩경화되며적층되어 z축방향의제1 지점까지제1 구조물을출력하는제1 단계, z축방향의제1 지점까지출력된제1 구조물에제2 레이저부가제2 빔을조사하여제1 구조물에제1 미세구멍을형성하는제2 단계를포함한다.