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Patent Agency Ranking
公开(公告)号：KR101051066B1
公开(公告)日：2011-07-21
申请号：KR1020080116181
申请日：2008-11-21
Abstract: 본 발명은 리튬이차 전지용 금속 복합 산화물 제조 방법 및 이를 포함하는 양극활물질에 관한 것으로, 공침법(co-precipitation)을 이용하여 리튬이차전지용(Li-ion battery) 다성분 금속산화물계 양극활물질을 제조하는데 있어서, 두 개 이상의 금속염 용액을 사용하며, 각각의 용액의 수소이온농도(pH)를 조절하여 첨가함으로써, 기존의 공침법보다 양극활물질 제조를 위한 전구체 입자의 성장을 촉진시키고, 입자의 평균 입경을 조절을 용이하게 하여 생산수율을 증가시킬 수 있도록 하는 발명에 관한 것이다.
리튬이차전지, 양극활물질, 다성분 금속산화물계, 공침, 수소이온농도, 입자크기Abstract translation: 本发明的用于制作一种用于制造锂二次电池，金属复合氧化物的方法，以及涉及含有相同的，共沉淀（共沉淀）的多组分锂二次电池使用的是基于金属氧化物的正极活性材料（锂离子电池）的阴极活性材料 颗粒的方法，使用一个以上的金属盐溶液和，通过加入通过调节各溶液的氢离子浓度（pH），和相对于传统的共沉淀促进前体颗粒的用于正电极活性材料的生长，平均粒径 并通过促进调整来提高产量。
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公开(公告)号：KR1020100057235A
公开(公告)日：2010-05-31
申请号：KR1020080116181
申请日：2008-11-21
CPC classification number: H01M4/525 , C01G53/006 , C01G53/42 , H01M10/0525 , H01M2004/028 , Y02E60/122
Abstract: PURPOSE: A method for manufacturing metal composite oxide is provided to promote the growth of precursor particles for manufacturing a positive electrode active material, to easily control an average particle diameter, and to increase a production yield. CONSTITUTION: A method for manufacturing metal composite oxide comprises the following steps: injecting a first metal salt solution with nickel and cobalt into a reactor in which distilled water is put; injecting a second metal salt solution having hydrogen ion concentration(pH) 6~12 into the reactor; and precipitating nickel composite hydroxide precursor particles by controlling pH of the whole metal salt solution in 11-13 while injecting NaOH solution and ammonia aqueous solution into the reactor.
Abstract translation: 目的：提供一种制造金属复合氧化物的方法，以促进用于制造正极活性物质的前体颗粒的生长，以容易地控制平均粒径，并提高产率。 构成：制造金属复合氧化物的方法包括以下步骤：将镍和钴的第一金属盐溶液注入放入蒸馏水的反应器中; 将具有氢离子浓度（pH）6〜12的第二金属盐溶液注入反应器; 并通过控制11-13中的全部金属盐溶液的pH，同时将NaOH溶液和氨水溶液注入反应器来沉淀镍复合氢氧化物前体颗粒。
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公开(公告)号：KR100887186B1
公开(公告)日：2009-03-10
申请号：KR1020070094735
申请日：2007-09-18
CPC classification number: H01M4/525 , C01G53/00 , H01M4/505 , H01M10/052 , H01M2004/028 , Y02E60/122 , Y02P70/54
Abstract: An apparatus and a method for preparing a precursor of a cathode active material for a lithium secondary battery are provided to improve the particle density while reducing the particle-size distribution of cathode active material precursor particles, and to reduce waste water containing alkali metal salts as byproducts generated in co-precipitation. An apparatus for preparing a precursor of a cathode active material for a lithium secondary battery from mixed metal salts by using a co-precipitation method, comprises a coprecipitation reactor(100) and particle separator(200). The coprecipitation reactor manufactures the reaction product including the precursor particles by the coprecipitation reaction by mixing reaction materials including the mixed metal salt solution and alkaline solution. The particle separator comprises a separation tank(210) connected through a slurry supplying pipe(220) from the coprecipitation reactor, and a dispersion device for dispersing the cohered particles of the slurry including precursor particles supplied to the separation tank through the slurry supplying pipe. The dispersion device divides the dispersed precursor particles and the minute particles within the separation tank.
Abstract translation: 提供一种用于制备用于锂二次电池的正极活性材料的前体的装置和方法，以改善颗粒密度同时降低正极活性材料前体颗粒的粒度分布，并且将含有碱金属盐的废水减少为 副产物在共沉淀中产生。 通过共沉淀法从混合金属盐制备锂二次电池用正极活性物质的前体的装置包括共沉淀反应器（100）和颗粒分离器（200）。 共沉淀反应器通过混合包括混合金属盐溶液和碱性溶液的反应材料通过共沉淀反应制备包括前体颗粒的反应产物。 颗粒分离器包括通过来自共沉淀反应器的浆料供应管道（220）连接的分离罐（210）和用于通过浆料供给管分散包含供给到分离罐的前体颗粒的浆料的附着颗粒的分散装置。 分散装置将分散的前体颗粒和微小颗粒分隔在分离罐内。
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公开(公告)号：KR100501830B1
公开(公告)日：2005-07-20
申请号：KR1020020031005
申请日：2002-06-03
Applicant: 한국화학연구원
IPC: C01B31/08
Abstract: 본 발명은 구형 활성탄의 제조방법에 관한 것으로서, 더욱 상세하게는 원료 핏치의 연화점을 상승시키는 전처리 과정, 상기 전처리된 원료 핏치 용융물을 수용액에 현탁시켜 구형입자로 성장시키는 구형화 과정, 구형입자를 산화, 탄화 및 활성화하는 일련의 공정을 거쳐 구형 활성탄을 제조하는 일반적 제조방법을 실시함에 있어 본 발명은 구형화 공정에 그 특징이 있는 것으로, 구형화 공정에서는 전처리된 핏치 용융물을 60 메쉬 이하 크기의 핏치 분말상으로 제조하여 계면활성제 수용액에 현탁시키고, 또한 구형화를 위한 현탁액의 교반 속도와 간단한 온도구배 조건을 둠으로써 구형입자의 입도 크기 및 분포제어가 용이하여 필터용 활성탄으로서 요구되어지는 25 ∼ 45 메쉬(ASTM 규격) 크기의 구형 활성탄 수율을 대폭 향상시킬 수 있을 뿐만 아니라 제조된 활성탄의 구형도 및 물리적 강도가 우수하여 액상과 기상 분리용 필터로서 효율적으로 사용할 수 있는 등의 장점을 가지는 구형 활성탄의 새로운 제조방법에 관한 것이다.
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公开(公告)号：KR1020030093444A
公开(公告)日：2003-12-11
申请号：KR1020020031005
申请日：2002-06-03
Applicant: 한국화학연구원
IPC: C01B31/08
CPC classification number: C01B32/318 , C01P2004/32 , C01P2006/12 , C01P2006/90
Abstract: PURPOSE: A method for efficiently manufacturing spherical activated carbon from pitch is provided. CONSTITUTION: In a method for manufacturing spherical activated carbon by globulizing, oxidizing, carbonizing and activating pitch, the method for manufacturing spherical activated carbon is characterized in that the globulization comprises processes of suspending pitch powder having a particle size corresponding to a sieve size of 40 meshes or less into surfactant aqueous solution having a concentration of 0.1 to 1.0 wt.%; and growing the mixture into spherical particles having a particle size corresponding to a sieve size of 25 to 45 meshes as having temperature gradient conditions in which the mixture is cooled to a temperature of 20 to 40 deg.C after maintaining the mixture to a temperature of 75 to 95 deg.C for 10 to 30 min as agitating the mixture to an agitation speed of 200 to 800 rpm, wherein the pitch powder is obtained by adding 30 to 45 wt.% of aromatic hydrocarbon compound to the treated mixture, melting and agitating the mixture and milling the melted and agitated mixture after adding 1 to 10 weight parts of nitro aromatic compound to 100 weight parts of raw material pitch, melting and agitating the mixture and treating the melted and agitated mixture, wherein the grown spherical particles are refined by solvent extraction using an extracting solvent of hexane, wherein the nitro aromatic compound is nitrobenzene, and the aromatic hydrocarbon compound is naphthalene based compound, wherein softening point of the pitch powder is 80 to 95 deg.C, and wherein the surfactant used in growing of the pitch powder particles is polyvinyl alcohol aqueous solution.
Abstract translation: 目的：提供一种高效地制造球形活性炭的方法。 构成：球形活性炭的球化，氧化，碳化和活化沥青的球形活性炭的制造方法中，球状活性炭的制造方法的特征在于，包括将筛孔尺寸相当于40的粉粒悬浮的方法 网眼或更少的浓度为0.1至1.0重量％的表面活性剂水溶液; 并将混合物生长成具有对应于25至45目的筛孔的粒径的球形颗粒，其温度梯度条件将混合物冷却至20至40℃的温度，将混合物保持在温度 75〜95℃，搅拌10〜30分钟，搅拌速度为200〜800rpm，通过向处理后的混合物中加入30〜45重量％的芳烃化合物，熔融， 在加入1至10重量份的硝基芳族化合物至100重量份原料沥青后，搅拌混合物并研磨熔融和搅拌的混合物，熔融并搅拌混合物并处理熔融和搅拌的混合物，其中生长的球形颗粒被精制 通过使用己烷的萃取溶剂进行溶剂萃取，其中硝基芳族化合物为硝基苯，芳烃化合物为萘系化合物，其中 沥青粉末的凝固点为80〜95℃，其中用于生长沥青粉末颗粒的表面活性剂为聚乙烯醇水溶液。
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