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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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2.发明授权
公开(公告)号：KR100454238B1
公开(公告)日：2004-10-26
申请号：KR1020020044443
申请日：2002-07-27
Applicant: 한국과학기술원
IPC: H01M4/58
Abstract: 본 발명은 마그네슘-니켈 산화물이 포함된 리튬유황이차전지용 양극 및 이를 포함하는 리튬유황이차전지, 마그네슘-니켈 산화물의 제조방법에 관한 것으로서 보다 상세하게는 상온에서 작동하는 리튬유황이차전지의 수명과 용량을 향상시키기 위해서 마그네슘-니켈 산화물이 포함된 리튬유황이차전지용 양극과 이를 포함하는 리튬유황이차전지, 전기의 마그네슘-니켈 산화물의 제조방법에 관한 것이다.
본 발명의 리튬유황이차전지용 양극은 공지의 리튬유황이차전지의 양극에 있어서, 하기의 식(1)으로 나타낼 수 있으며 20∼40nm의 입자크기를 가지는 마그네슘-니켈 산화물을 1∼30 중량% 포함하는 것을 특징으로 한다.
Mg
x Ni
1-x O......(1)
상기 식에서 x는 0.1 ∼ 0.9 이다.Abstract translation: 目的：本发明提供一种锂硫二次电池用阴极，其通过添加一种能够防止活性物质硫溶出到电解质中并促进电池反应，从而提高锂 - 硫二次电池的电极使用寿命和初始容量 可以用作吸收剂的镁 - 镍氧化物和用于阴极的催化剂。 构成：用于锂 - 硫二次电池的阴极包含由下式表示的镁 - 镍氧化物：Mg x Ni（1-x）O，其中x为0.1-0.9。 通过在搅拌下将镍化合物，镁化合物和螯合剂混入蒸馏水中直至混合物形成凝胶并在650-750℃煅烧凝胶4-6小时来制备镁 - 镍氧化物。
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公开(公告)号：KR1020040011629A
公开(公告)日：2004-02-11
申请号：KR1020020044443
申请日：2002-07-27
Applicant: 한국과학기술원
IPC: H01M4/58
Abstract: PURPOSE: Provided is a cathode for lithium-sulfur secondary cell which can improve service life of electrode of lithium-sulfur secondary cell and initial capacity by preventing the active substance sulfur from being eluted into electrolytes as well as promoting the cell reaction, by adding a magnesium-nickel oxide which can be served as an absorbing agent and catalyst to the cathode. CONSTITUTION: The cathode for lithium-sulfur secondary cell comprises a magnesium-nickel oxide represented by the following formula: MgxNi(1-x)O, wherein x is 0.1-0.9. The magnesium-nickel oxide is prepared by blending a nickel compound, magnesium compound and a chelating agent in distilled water with stirring until the mixture forms a gel, and calcining the gel at 650-750 deg.C for 4-6 hours.
Abstract translation: 目的：提供一种锂 - 硫二次电池的阴极，可以通过防止活性物质硫被洗脱到电解质中并促进电池反应，从而提高锂 - 硫二次电池电极的使用寿命和初始容量， 可以作为吸收剂和催化剂用于阴极的镁 - 镍氧化物。 构成：锂 - 硫二次电池用阴极包含由下式表示的镁 - 镍氧化物：Mg x Ni（1-x）O，其中x为0.1-0.9。 通过在搅拌下将镍化合物，镁化合物和螯合剂在蒸馏水中混合，直到混合物形成凝胶，并在650-750℃下煅烧凝胶4-6小时来制备镁 - 镍氧化物。
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公开(公告)号：KR1020020017289A
公开(公告)日：2002-03-07
申请号：KR1020000050503
申请日：2000-08-29
Applicant: 한국과학기술원
IPC: H01M4/04
CPC classification number: H01M10/052 , H01M4/02 , H01M4/04 , H01M4/0402 , H01M4/0416 , H01M4/136 , H01M4/1397 , H01M4/38 , H01M4/622 , H01M4/625 , H01M4/626 , Y10T29/49108
Abstract: PURPOSE: Provided is a sulfur electrode for an anode of a lithium secondary battery, which is produced by adding nickel as an electric conductor to a sulfur electrode material, therefore, it can improve the lifetime of the lithium secondary battery. CONSTITUTION: The sulfur electrode is produced by a process comprising the steps of: mixing 10-90% (based on the total composition of the sulfur electrode) of sulfur powder as an active material and carbon powder and 10-30% (based on the total composition of the sulfur electrode) of the nickel powder as electric conductors under the inert atmosphere; stirring the mixture powder with polyethylene oxide in a solvent such as acetonitrile to make a slurry for the anode; and drying the slurry.
Abstract translation: 目的：提供通过将镍作为导电体添加到硫电极材料而制造的锂二次电池的阳极用硫电极，因此能够提高锂二次电池的寿命。 构成：硫电极通过以下步骤制造，该方法包括以下步骤：将10-90％（基于硫电极的总组成）作为活性材料的硫粉末和10-30％（基于 镍电极的总组成）在惰性气氛下作为电导体; 在溶剂如乙腈中将混合物粉末与聚环氧乙烷一起搅拌以制备用于阳极的浆料; 并干燥浆料。
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公开(公告)号：KR100379249B1
公开(公告)日：2003-04-08
申请号：KR1020000050503
申请日：2000-08-29
Applicant: 한국과학기술원
IPC: H01M4/04
CPC classification number: H01M10/052 , H01M4/02 , H01M4/04 , H01M4/0402 , H01M4/0416 , H01M4/136 , H01M4/1397 , H01M4/38 , H01M4/622 , H01M4/625 , H01M4/626 , Y10T29/49108
Abstract: 본 발명은 전극 수명이 향상된 리튬이차전지의 양극전극용 유황전극 및 그 제조방법에 관한 것으로, 보다 상세하게는 양극전극의 활물질인 유황에 니켈이 첨가된 유황전극 및 그 제조방법에 관한 것이다.
본 발명의 리튬유황전지의 양극전극용 유황전극은 전기전도체로서 니켈을 첨가하여 제조된 것으로서, 이렇게 제조된 리튬유황 이차전지는 지금까지 개발된 리튬유황 이차전지의 문제점인 전극수명 문제를 해결할 수 있다.Abstract translation: 提供一种用于锂二次电池的硫酸正极，其生命周期得到改善，并且提供了一种制造硫酸正极的方法，其中将镍添加到作为正极的活性材料的硫中。 通过添加作为电导体的镍制造的硫酸正极可以解决关于电极寿命周期的问题。
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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：KR1020020086156A
公开(公告)日：2002-11-18
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：提供使用镍/硫化合物作为锂二次电池的电极活性物质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步骤：（i）称量镍/硫化合物作为活性物质，碳粉末作为导电体，离子导体和粘合剂，并在溶剂中搅拌该物质 以形成浆料，和（ii）干燥浆料以获得阳极。 镍/硫化合物是NiS，NiS2，Ni7S6和Ni3S2中的至少一种。 当要生产用于高温的阳极时，粘合剂是聚环氧乙烷，或者当生产用于环境温度的阳极时聚偏二氟乙烯。
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公开(公告)号：KR1020020084618A
公开(公告)日：2002-11-09
申请号：KR1020010024057
申请日：2001-05-03
Applicant: 한국과학기술원
IPC: H01M4/60
Abstract: 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.
Abstract translation: 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。
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