公开(公告)号：KR101181323B1

公开(公告)日：2012-09-11

申请号：KR1020110031406

申请日：2011-04-05

Applicant: 전남대학교산학협력단

Inventor： 김재국 ,  임진섭 ,  김동한 ,  강정원 ,  우철홍 ,  김지현 ,  최철훈

IPC: H01M4/04 ,  H01M4/139 ,  H01M4/48 ,  H01M4/58

CPC classification number: C01B25/45 ,  C01G31/00 ,  C01G45/1228 ,  C01G45/1242 ,  C01P2002/72 ,  C01P2004/80 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M2220/20 ,  Y02E60/122

Abstract: PURPOSE: A manufacturing method of a lithiated electrode material is provided to manufacture an electrode material consisting of uniform particles having sizes of 500 or less, and having relatively excellent performance in low temperatures. CONSTITUTION: A manufacturing method of a lithiated electrode material using polyol process comprises a step of manufacturing polyol reactant composition by adding transition metal compound, dissolving a lithium-based compound into a polyol solvent; a step of raising temperature of the manufactured polyol reaction composition to 240-260°C; a step of maintaining the risen temperature of the reactant composition, and cooling the reactant composition to generate the lithiated electrode material.

Abstract translation: 目的：提供锂化电极材料的制造方法，制造由尺寸为500以下的均匀粒子构成的电极材料，在低温下具有较好的性能。 构成：使用多元醇工艺的锂化电极材料的制造方法包括通过添加过渡金属化合物，将锂基化合物溶解在多元醇溶剂中来制造多元醇反应物组合物的步骤; 制造的多元醇反应组合物的温度升高到240-260℃的步骤; 保持反应物组合物升高温度的步骤，并冷却反应物组合物以产生锂化电极材料。

公开(公告)号：KR101125260B1

公开(公告)日：2012-03-21

申请号：KR1020090101937

申请日：2009-10-26

Applicant: 전남대학교산학협력단

Inventor： 김종호 ,  김재국 ,  조동련 ,  최병철 ,  김건중 ,  김명완 ,  김종범 ,  박희주 ,  임진섭 ,  최은석 ,  유인선

IPC: H01M4/48 ,  H01M4/04 ,  C02F11/12 ,  H01M10/38

Abstract: 본 발명은 폐기물 슬러지를 이용한 리튬 이차 전지용 음극 활물질과 그 제조방법 및 이를 이용한 리튬 이차 전지에 관한 것으로서, 더욱 상세하게는 하수, 오폐수 등의 오염수의 수처리 공정으로부터 발생되는 폐기물 슬러지로부터 회수된 산화티타늄 화합물을 음극 활물질로 이용하여 폐기되는 자원을 재활용할 수 있는 리튬 이차 전지용 음극 활물질과 그 제조방법 및 이를 이용한 리튬 이차 전지에 관한 것이다.
상기의 목적을 달성하기 위한 본 발명의 폐기물 슬러지를 이용한 리튬 이차 전지용 음극 활물질은 응집제로서 가수분해성 티타늄 화합물을 오염수에 투입하여 형성시킨 응집체를 티타늄(Ti) 공급원 물질로 하여 얻어진 산화티타늄 화합물을 포함하는 것을 특징으로 한다.
따라서 본 발명의 음극 활물질은 합성이 용이하며, 결정성이 우수하고 입자가 균일하여 초기방전용량이 높고 충방전의 횟수가 많더라도 방전용량이 크게 저하되지 않는 등 전기화학적으로 안정한 특성을 갖는다.
리튬, 리튬전지, 이차전지, 전극, 음극, 활물질, 이산화티타늄, 응집체

公开(公告)号：KR100999163B1

公开(公告)日：2010-12-07

申请号：KR1020100034889

申请日：2010-04-15

Applicant: 전남대학교산학협력단

Inventor： 김재국 ,  김은정 ,  유인선 ,  임진섭

IPC: B82B3/00 ,  H01L21/28

CPC classification number: H01M4/131 ,  B82B3/00 ,  C01B25/45 ,  H01L21/28 ,  H01M4/366 ,  H01M4/5825 ,  H01M4/587 ,  H01M4/625 ,  H01M10/052

Abstract: PURPOSE: A synthesis method of a nanoelectrode material, and the nanoelectrode material synthesized therefrom are provided to secure the excellent crystalline property of the material only by synthesizing at room temperature. CONSTITUTION: A synthesis method of a nanoelectrode material comprises the following steps: mixing a polyol solvent, a transition metal oxide, a polyacid anion-based compound, a lithium system compound, and a flammable liquid, to form a reaction solution; combusting the reaction solution; and collecting particles after combusting to obtain the nanoelectrode material.

Abstract translation: 目的：提供纳米电极材料的合成方法和由其合成的纳米电极材料，仅通过在室温下合成来确保材料的优异结晶性能。 构成：纳米电极材料的合成方法包括以下步骤：将多元醇溶剂，过渡金属氧化物，多酸阴离子基化合物，锂系化合物和易燃液体混合，形成反应溶液; 燃烧反应溶液; 并在燃烧后收集颗粒以获得纳米电极材料。

公开(公告)号：KR101383681B1

公开(公告)日：2014-04-10

申请号：KR1020110118877

申请日：2011-11-15

Applicant: 전남대학교산학협력단

Inventor： 김재국 ,  임진섭 ,  김지현 ,  문지예 ,  강성원

IPC: H01M4/505 ,  H01M4/1391 ,  H01M10/052 ,  C01G45/02

CPC classification number: Y02E60/122 ,  Y02T10/7011

Abstract: 본 발명은 전극재료에 관한 것으로, 보다 구체적으로는 산화법에 의해 제조된 비정질 형태의 리튬망간산화물을 출발 물질로 하여 단사정계결정구조 또는 다양한 상들이 동시에 존재하는 결정구조로 이루어진 리튬망간산화물 전극재료를 제조하는 방법, 그 방법으로 제조된 전극재료 및 상기 전극재료를 포함하는 2차전지에 관한 것이다.

公开(公告)号：KR1020130053584A

公开(公告)日：2013-05-24

申请号：KR1020110118888

申请日：2011-11-15

Applicant: 전남대학교산학협력단

Inventor： 김재국 ,  임진섭 ,  김지현 ,  김강근 ,  송진주

IPC: C01B31/02 ,  B01J19/10 ,  B01J6/00

CPC classification number: C01B32/184 ,  B01J6/00 ,  B01J19/10 ,  C01B32/23 ,  C01B2204/00

Abstract: PURPOSE: A graphene nano-sheet and a manufacturing method thereof are provided to synthesize the graphene nano-sheet only within several seconds to several minutes by using an ultra fast combustion method without an after treatment process and other addition processes. CONSTITUTION: A manufacturing method of a graphene nano-sheet comprises the following steps: a preparing step aims to prepare a reacting solution by mixing a graphite oxide, a polyol solvent, and a flammable liquid; a burning step aims to completely burn the reacting solution by lighting a fire after the reacting solution is poured and circulated on a bottom plate; and an yielding step aims to yield a residue which remains after burning completely in the bottom plate. The yielding step comprises a step of processing an obtained residue with an ultrasonic wave.

Abstract translation: 目的：提供石墨烯纳米片及其制造方法，其通过使用超快速燃烧法在几秒至数分钟内合成石墨烯纳米片，而不需要后处理工艺和其它加成方法。 构成：石墨烯纳米片的制造方法包括以下步骤：制备步骤旨在通过混合石墨氧化物，多元醇溶剂和可燃性液体来制备反应溶液; 燃烧步骤旨在通过在反应溶液倾倒并在底板上循环之后点燃火焰来完全燃烧反应溶液; 并且产生步骤旨在产生在底板中完全燃烧后残留的残余物。 屈服步骤包括用超声波处理获得的残余物的步骤。

公开(公告)号：KR1020110045382A

公开(公告)日：2011-05-04

申请号：KR1020090101937

申请日：2009-10-26

Applicant: 전남대학교산학협력단

Inventor： 김종호 ,  김재국 ,  조동련 ,  최병철 ,  김건중 ,  김명완 ,  김종범 ,  박희주 ,  임진섭 ,  최은석 ,  유인선

IPC: H01M4/48 ,  H01M4/04 ,  C02F11/12 ,  H01M10/38

Abstract: PURPOSE: A negative electrode active material for a rechargeable lithium ion battery using waste sludge is provided to ensure high discharge capacity and electrochemical stability by recycling waste sludge. CONSTITUTION: A negative electrode active material for a rechargeable lithium ion battery using waste sludge comprises the steps of: injecting a mucolytic titanium compound into contaminated water as a coagulant in contaminated water to produce an aggregate; and separating the aggregate from a supernatant; dehydrating the aggregate separating from the supernatant; and sintering the dehydrated aggregate.

Abstract translation: 目的：提供使用废污泥的可再充电锂离子电池的负极活性物质，通过回收废污泥来确保高放电容量和电化学稳定性。 构成：使用废污泥的可再充电锂离子电池的负极活性物质包括以下步骤：在污染的水中将粘性溶解钛化合物作为凝结剂注入污染的水中以产生骨料; 并将骨料与上清液分离; 使从上清液中分离出的骨料脱水; 并烧结脱水骨料。

公开(公告)号：KR1020090019887A

公开(公告)日：2009-02-25

申请号：KR1020090008631

申请日：2009-02-03

Applicant: 전남대학교산학협력단

Inventor： 김재국 ,  박찬우 ,  김동한 ,  임진섭 ,  강정원 ,  김은정 ,  안효열

IPC: H01M4/04 ,  H01M4/48 ,  H01M10/36

CPC classification number: C01G51/44 ,  C01P2006/40 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  Y02E60/12

Abstract: A cathode material of a lithium secondary battery and a manufacturing method thereof are provided to realize high-capacity while suppressing transition to a spinel phase during several times cycle process through the partial substitution of transition metal having low valent metal in a LiM'M"O3 structure, or model metal. A method for manufacturing a cathode material of a lithium secondary battery comprises (S110) a step for obtaining a lithium precursor, M' precursor and M'' precursor by dissolving the lithium precursor, M' precursor and M'' precursor in distilled water respectively; (S120) a step for obtaining the M'M'' precursor solution by adding M'' precursor solution in M' precursor; (S130) a step for obtaining the lithium M'M'' precursor solution by adding the lithium precursor solution in the M'M'' precursor solution; (S140) a step for agitating the lithium M'M'' precursor solution; (S150) a step for obtaining parent powder by putting the agitated lithium M'M'' precursor solution in an oven, and evaporating water from the M'M'' precursor solution; (S160) a step for pulverizing the parent powder and to heating it to the first temperature in the atmosphere; (S170) a step for heating the parent powder at the second temperature higher than the first temperature and cooling it; and (S180) a step for obtaining a cathode material of a lithium secondary battery by washing the cooled parent powder with distilled water and drying the washed parent powder.

Abstract translation: 提供锂二次电池的正极材料及其制造方法，通过在LiM'M“O 3中部分取代低价金属的过渡金属，在几次循环过程中抑制向尖晶石相的转变，实现高容量 锂二次电池的正极材料的制造方法包括：（S110）通过将锂前体，M'前体和M'前体溶解来获得锂前体，M'前体和M“前体的工序， （S120）通过在M'前体中添加M前体溶液来获得M'M前体溶液的步骤（S130）获得M'M前体溶液的步骤 通过在M'M前体溶液中加入锂前体溶液;（S140）搅拌M'M前体溶液的步骤;（S150）通过将搅拌的锂M'M “前体解决方案 n，并从M'M'前体溶液蒸发水; （S160）将母体粉末粉碎并将其加热到大气中的第一温度的步骤; （S170）在高于第一温度的第二温度下加热母体粉末并冷却的步骤; 和（S180）通过用蒸馏水洗涤冷却的母体粉末并干燥洗涤的母体粉末来获得锂二次电池的阴极材料的步骤。

公开(公告)号：KR1020130053583A

公开(公告)日：2013-05-24

申请号：KR1020110118877

申请日：2011-11-15

Applicant: 전남대학교산학협력단

Inventor： 김재국 ,  임진섭 ,  김지현 ,  문지예 ,  강성원

IPC: H01M4/505 ,  H01M4/1391 ,  H01M10/052 ,  C01G45/02

CPC classification number: Y02E60/122 ,  Y02T10/7011 ,  C01G45/12 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/505 ,  H01M10/0525

Abstract: PURPOSE: A manufacturing method of a lithium manganese oxide electrode material is provided to manufacture a crystalline lithium manganese oxide electrode material using an amorphous lithium manganese oxide as a starting material. CONSTITUTION: A manufacturing method of a lithium manganese oxide electrode material comprises a step of obtaining a uniform mixture by mixing amorphous lithium manganese oxide; and a step of heat-treating the mixture under oxygen or air atmosphere. The molar ratio of lithium and manganese is 6:5-10:5, in the mixture. The mixing step comprises a dry ball-milling the amorphous lithium manganese oxide and lithium. The heat-treating step is conducted in a vacuum furnace at 400-900 deg. C for 8-20 hours.

Abstract translation: 目的：提供一种锂锰氧化物电极材料的制造方法，以制造使用无定形锰酸锂作为原料的结晶锂锰氧化物电极材料。 构成：锂锰氧化物电极材料的制造方法包括通过混合无定形锰酸锂获得均匀混合物的步骤; 以及在氧气或空气气氛下对混合物进行热处理的步骤。 在混合物中锂和锰的摩尔比为6：5-10：5。 混合步骤包括无定形的锂锰氧化物和锂的干球磨。 热处理步骤在400-900度的真空炉中进行。 C 8-20小时。

公开(公告)号：KR1020120043981A

公开(公告)日：2012-05-07

申请号：KR1020100105307

申请日：2010-10-27

Applicant: 주식회사 엘지화학 ,  전남대학교산학협력단

Inventor： 오송택 ,  정근창 ,  김재국 ,  임진섭 ,  우철홍 ,  김지현 ,  유인선 ,  최철훈

IPC: C01G45/00 ,  H01M4/485 ,  H01M10/0525

CPC classification number: Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011 ,  C01G45/1221 ,  C01P2006/40 ,  H01M4/505 ,  H01M10/052

Abstract: PURPOSE: A manufacturing method of lithium-manganese oxide of excessive lithium and a secondary battery using thereof are provided to enhancing charge and discharge characters even in volume, variety, and velocity. CONSTITUTION: A manufacturing method of lithium-manganese oxide of excessive lithium is represented by chemical formula 1. The manufacturing method of lithium-manganese oxide of excessive lithium comprises the next steps: processing a reaction of lithium complex with lithium manganese based oxide which is represented by chemical formula 2 in reducing condition in order to synthesize lithium manganese based oxide; and synthesizing lithium manganese based oxide. The chemical formula 1 is same as follow: Li1+xMyMn2-yO4-zQz. The chemical formula 2 is same as follow: Li1+xMyMn2-x-yO4-zQ'z.

Abstract translation: 目的：提供过量锂的锂锰氧化物及其二次电池的制造方法，以便即使体积，种类和速度也能增强充放电特性。 构成：过量锂的锂锰氧化物的制造方法由化学式1表示。过量锂的锂锰氧化物的制造方法包括以下步骤：处理锂络合物与代表的锂锰氧化物的反应 通过化学式2在还原条件下合成锂锰氧化物; 并合成锂锰氧化物。 化学式1如下：Li1 + xMyMn2-yO4-zQz。 化学式2如下：Li1 + xMyMn2-x-yO4-zQ'z。

公开(公告)号：KR1020090019590A

公开(公告)日：2009-02-25

申请号：KR1020070084140

申请日：2007-08-21

Applicant: 전남대학교산학협력단

Inventor： 김재국 ,  박찬우 ,  김동한 ,  임진섭 ,  강정원 ,  김은정 ,  안효열

IPC: H01M4/50 ,  H01M4/52 ,  H01M4/48

CPC classification number: H01M4/505 ,  C01G45/12 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/485 ,  H01M4/525 ,  H01M10/0525 ,  Y02E60/122

Abstract: A cathode material of a lithium-ion battery and a manufacturing method thereof is provided to realize high-capacity while suppressing transition to a spinel phase by bonding oxygen through the partial substitution of transition metal having low valent metal in a LiM'M''O3 structure, or model metal. A method for manufacturing a cathode material of a lithium secondary battery comprises (S110) a step for manufacturing a lithium precursor, M' precursor and M'' precursor by dissolving the lithium precursor, M' precursor and M'' precursor in distilled water respectively; (S120) a step for manufacturing the M'M'' precursor solution by adding M'' precursor solution in M' precursor; (S130) a step for manufacturing the lithium M'M'' precursor solution by adding the lithium precursor solution in the M'M'' precursor solution; (S140) a step for agitating the lithium M'M'' precursor solution; (S150) a step for obtaining parent powder by putting the agitated lithium M'M'' precursor solution in an oven, and evaporating water from the M'M'' precursor solution; (S160) a step for pulverizing the parent powder and to heating it to the first temperature in the atmosphere; (S170) a step for heating the parent powder at the second temperature higher than the first temperature and cooling it; and (S180) a step for obtaining a cathode material of a lithium secondary battery by washing the cooled parent powder with distilled water and drying the washed parent powder.

Abstract translation: 提供锂离子电池的正极材料及其制造方法，通过在LiM'M'O3中部分取代低价金属的过渡金属，通过键合氧而抑制向尖晶石相的转变，实现高容量 结构或模型金属。 锂二次电池的正极材料的制造方法包括：（S110）分别将锂前体，M'前体和M'前体分别溶解在蒸馏水中的锂前体，M'前体和M“前体的制造工序 ; （S120）通过在M'前体中添加M前体溶液来制造M'M前体溶液的步骤; （S130）通过在M'M前体溶液中添加锂前体溶液来制造M'M前体溶液的步骤; （S140）搅拌所述锂M'M前体溶液的步骤; （S150）通过将搅拌的M'M'M前体溶液置于烘箱中并从M'M前体溶液中蒸发水来获得母体粉末的步骤; （S160）将母体粉末粉碎并将其加热到大气中的第一温度的步骤; （S170）在高于第一温度的第二温度下加热母体粉末并冷却的步骤; 和（S180）通过用蒸馏水洗涤冷却的母体粉末并干燥洗涤的母体粉末来获得锂二次电池的阴极材料的步骤。