-
公开(公告)号：KR1020160044699A
公开(公告)日：2016-04-26
申请号：KR1020140139273
申请日：2014-10-15
Applicant: 주식회사 포스코 , 재단법인 포항산업과학연구원 , 동국대학교 산학협력단
CPC classification number: H01M4/9016 , H01M4/382 , H01M12/08 , H01M2300/0028 , Y02E60/128 , H01M4/90 , H01M4/88 , H01M2004/028 , Y02E60/12
Abstract: 리튬-공기이차전지용양극촉매, 이의제조방법, 및이를포함하는리튬-공기이차전지가개시된다. 본발명의일 구현예는, 티타늄이온전구체를용매에첨가한후, 교반하여제1 용액을형성하는단계; 유기물을용매에첨가한후, 교반하여제2 용액을형성하는단계; 상기제1 및제2 용액을혼합한후, 상기혼합용액을방사하여나노섬유복합체를형성하는단계; 및상기나노섬유복합체를열처리하여티타늄옥사이드(TiO) 나노섬유를형성하는단계;를포함하는리튬-공기이차전지용양극촉매의제조방법를제공한다.
Abstract translation: 公开了一种用于锂空气二次电池的正极催化剂和包括其的锂 - 空气二次电池。 本发明的一个实施方案提供了一种用于锂空气二次电池的正极催化剂的制造方法。 制造方法包括以下步骤：通过向溶剂中加入钛离子前体，然后搅拌形成第一溶液; 通过向溶剂中加入有机物质然后搅拌形成第二溶液; 通过混合第一和第二溶液然后辐射混合溶液形成纳米纤维复合物; 并通过热处理纳米纤维复合体形成二氧化钛（TiO_2）纳米纤维。
-
公开(公告)号：KR101500880B1
公开(公告)日：2015-03-12
申请号：KR1020130153108
申请日：2013-12-10
Applicant: 동국대학교 산학협력단
CPC classification number: C01B32/186 , B01J19/081
Abstract: 본 발명의 질소가 도핑된 그라핀을 제조하는 방법은 높은 에너지원 및 산소가 배제된 환경과 환원제를 필요로 하는 기존의 그라핀 도핑 방법과는 달리 수산화 라디칼 수용체(hydroxyl radical scavenger)가 소량 첨가되어 있는 그라파이트 산화물 수용액에 질소를 제공하는 전구체를 혼합하고 상온 및 대기 중에서 방사선을 조사함으로써 그라핀으로의 환원 및 질소 도핑을 동시에 할 수 있는 새로운 제조법을 제시하였다.
Abstract translation: 本发明的氮掺杂石墨烯的制造方法已经示出了能够通过将提供氮的前体与石墨氧化物的水溶液混合而同时进行氧化石墨对石墨烯的还原工艺和氮掺杂工艺的新的制造方法，包括 少量的羟基自由基清除剂以获得混合溶液; 并且在室温下在大气中向混合溶液施加辐射，与现有的需要排除高能量和氧气的环境和还原剂的石墨烯掺杂方法不同。
-
公开(公告)号：KR1020140102382A
公开(公告)日：2014-08-22
申请号：KR1020130015405
申请日：2013-02-13
Applicant: 주식회사 포스코 , 동국대학교 산학협력단 , 재단법인 포항산업과학연구원
CPC classification number: Y02E60/128
Abstract: The present invention relates to a cathode catalyst for a lithium-air secondary battery, a manufacturing method thereof and a lithium-air secondary battery including the same. The manufacturing method for a cathode catalyst for a lithium-air secondary battery of the present invention comprises a first step of forming an aqueous solution by dissolving manganese ion precursors in distilled water; a second step of manufacturing a mixture by stirring the aqueous solution formed in the first step with a compound selected from the group consisting of potassium permanganate (KMnO_4), sodium permanganate (NaMnO_4), ammonium permanganate (NH_4MnO_4) and calcium permanganate (Ca(MnO_4)_2); a third step of synthesizing alpha phase manganese oxide nanowires (α-MnO_2 nanowires) by hydrothermally synthesizing the mixture manufactured in the second step; and a fourth step of pulverizing the alpha phase manganese oxide nanowires (α-MnO_2 nanowires) by drying the same. The cathode catalyst for a lithium-air secondary battery manufactured according to the manufacturing method of the present invention is able to lower charge and discharge overvoltage by accelerating oxygen reaction in a positive electrode of a lithium-air secondary battery and is able to improve energy efficiency.
Abstract translation: 本发明涉及一种锂空气二次电池用阴极催化剂及其制造方法以及包含该锂二次电池的锂空气二次电池。 本发明的锂空气二次电池用阴极催化剂的制造方法包括：通过将锰离子前体溶解在蒸馏水中而形成水溶液的第一工序; 通过用选自高锰酸钾（KMnO_4），高锰酸钠（NaMnO_4），高锰酸铵（NH_4MnO_4）和高锰酸钙（Ca（MnO4））的化合物搅拌第一步骤中形成的水溶液制备混合物的第二步骤 ）_2）; 通过水热合成在第二步骤中制造的混合物来合成α相锰氧化物纳米线（α-MnO_2纳米线）的第三步骤; 以及通过干燥α相锰氧化物纳米线（α-MnO_2纳米线）的第四步骤。 根据本发明的制造方法制造的锂空气二次电池用阴极催化剂能够通过加速锂空气二次电池的正极中的氧反应来降低充放电过电压，能够提高能量效率 。
-
公开(公告)号：KR1020140044622A
公开(公告)日：2014-04-15
申请号：KR1020120110823
申请日：2012-10-05
Applicant: 동국대학교 산학협력단
IPC: H01M4/1391 , H01M4/485 , D01D5/00 , D04H1/728
CPC classification number: C01G23/04 , B82Y30/00 , C01G23/005 , C01P2002/32 , C01P2002/72 , C01P2004/03 , C01P2004/04 , C01P2004/16 , D01D5/003 , D01F9/08 , H01M4/485
Abstract: The present invention relates to a method for manufacturing a spinel lithium titanium oxide nanofiber negative electrode for a negative electrode active material of a lithium secondary battery. The method includes a step of manufacturing a mixed solution by mixing an organic material, which is selected from polyvinylpyrrolidone, polymethylmethacrylate, polyethylene, polyethylene oxide, and polyvinyl alcohol, a lithium precursor, and a titanium precursor with a solvent; a step of manufacturing composite nanofiber by electrospinning the mixed solution; and a step of removing the organic material by heat-treating the composite nanofiber. By the spinel lithium titanium oxide nanofiber manufactured by the method in the present invention, the contact area between an electrolyte solution and a conductor is increased, the diffusion distance of lithium ions is reduced, and electric conductivity and ion conductivity are remarkably improved by wide surface area per unit volume of the spinel lithium titanium oxide nanofiber.
Abstract translation: 本发明涉及锂二次电池的负极活性物质的尖晶石型锂二氧化钛纳米纤维负极的制造方法。 该方法包括通过将溶剂中选自聚乙烯吡咯烷酮，聚甲基丙烯酸甲酯，聚乙烯，聚环氧乙烷和聚乙烯醇，锂前体和钛前体的有机材料混合来制备混合溶液的步骤; 通过静电纺丝制备复合纳米纤维的步骤; 以及通过对复合纳米纤维进行热处理来除去有机材料的步骤。 通过本发明方法制造的尖晶石型钛酸锂纳米纤维，电解液和导体之间的接触面积增加，锂离子的扩散距离减小，导电性和离子传导性由表面显着提高 单位体积的尖晶石锂钛氧化物纳米纤维的面积。
-
公开(公告)号：KR1020140036535A
公开(公告)日：2014-03-26
申请号：KR1020120102740
申请日：2012-09-17
Applicant: 동국대학교 산학협력단
IPC: H01M10/052 , H01M4/38 , H01M4/583 , H01M10/0567
CPC classification number: H01M4/366 , H01M4/02 , H01M4/0419 , H01M4/0438 , H01M4/0471 , H01M4/133 , H01M4/134 , H01M4/364 , H01M4/386 , H01M4/583 , H01M4/587 , H01M4/622 , H01M4/623 , H01M10/052 , H01M10/0567 , H01M2004/025 , H01M2004/027 , Y02T10/7011
Abstract: The present invention relates to: a negative electrode applied with a silicon-carbon composite that has a small volume expansion upon an insertion of lithium ions and has excellent ionic and electric conductivities thereby capable of maintaining a high capacity; a lithium secondary battery that includes an electrolyte capable of improving electrochemical properties thereof; and a preparation method thereof. The lithium secondary battery of the present invention: uses the silicon-carbon composite of a negative electrode active material for integrating silicon and carbon fibers; reduces the volume expansion when the lithium ions are inserted by coating the surface of silicon particles with amorphous silica; has excellent ionic conductivity and electric conductivity for consistently maintaining a high capacity; and furthermore, improves electrochemical properties of the silicon-carbon composite including coulombic efficiency, capacity improvement and rate determining properties by using the electrolyte containing additives such as FEC, VEC, VC, EC, DFEC, t-butyl benzene, and t-pentyl benzene.
Abstract translation: 本发明涉及一种负极，其上涂有硅 - 碳复合材料，其在插入锂离子时体积膨胀小，并且具有优异的离子和电导率，从而能够保持高容量; 锂二次电池，其包括能够改善其电化学性质的电解质; 及其制备方法。 本发明的锂二次电池：使用负极活性物质的硅 - 碳复合体来集成硅和碳纤维; 通过用无定形二氧化硅涂覆硅颗粒的表面来减少锂离子插入时的体积膨胀; 具有优异的离子导电性和电导率，可以持续保持高容量; 此外，通过使用含有电解质的添加剂如FEC，VEC，VC，EC，DFEC，叔丁基苯和叔戊基苯，改善了包括库仑效率，容量改进和速率测定性能的硅 - 碳复合材料的电化学性能 。
-
Patent Agency Ranking
公开(公告)号：KR101341951B1
公开(公告)日：2013-12-16
申请号：KR1020120079965
申请日：2012-07-23
Applicant: 동국대학교 산학협력단
IPC: H01M4/583 , H01M4/38 , H01M4/13 , H01M10/052
CPC classification number: H01M4/0438 , H01M4/0471 , H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/1395 , H01M4/362 , H01M4/366 , H01M4/386 , H01M4/587 , Y02E60/122 , Y10S977/734 , Y10T428/2993
Abstract: The present invention relates to a silicon-carbon composite for negative electrode of a lithium secondary battery. The silicon-carbon composite comprises carbon fiber and silicon particles, and the silicon particles are coated by non-crystalline silica. The silicon-carbon composite can reduce volume expansion when inserting lithium ions by compounding silicon and carbon fiber, and coating the surface of the silicon particles with the non-crystalline silica, in addition, the excellent electricity and ion conductance can maintain the high capacity. The silicon-carbon composite has a stable complex structure and a large specific surface by the silicon coated with the non-crystalline silica inside of the carbon fiber having a one dimensional structure.
Abstract translation: 本发明涉及锂二次电池用负极用硅碳复合体。 硅 - 碳复合材料包括碳纤维和硅颗粒，并且硅颗粒被非结晶二氧化硅涂覆。 硅 - 碳复合材料可以通过复合硅和碳纤维来插入锂离子而减少体积膨胀，并且用非结晶二氧化硅涂覆硅颗粒的表面，此外，优异的电离离子电导能保持高容量。 硅 - 碳复合材料具有稳定的复合结构，并且通过在具有一维结构的碳纤维内的非结晶二氧化硅涂覆的硅具有大的比表面积。
-
公开(公告)号：KR102112405B1
公开(公告)日：2020-05-19
申请号：KR1020180088042
申请日：2018-07-27
Applicant: 동국대학교 산학협력단 , 성균관대학교산학협력단
IPC: H01M4/505 , H01M10/052 , H01M10/054
-
公开(公告)号：KR102055067B1
公开(公告)日：2019-12-12
申请号：KR1020180077840
申请日：2018-07-04
Applicant: 동국대학교 산학협력단
IPC: H01M10/0569 , H01M10/0568 , H01M4/58 , H01M4/136 , H01M10/44 , H01M10/052 , H01M4/62 , H01M4/38
-
公开(公告)号：KR1020180081953A
公开(公告)日：2018-07-18
申请号：KR1020170002916
申请日：2017-01-09
Applicant: 동국대학교 산학협력단
IPC: H01M10/0562 , H01M10/054 , H01M4/583 , H01M4/04 , H01M4/38 , H01M4/02
CPC classification number: H01M10/0562 , H01M4/0452 , H01M4/381 , H01M4/583 , H01M10/054 , H01M2004/027 , Y02E60/12
Abstract: 나트륨이차전지용음극활물질및 이의제조방법을제공한다. 음극활물질로서, 인탄소그래핀복합체, 이의제조방법을제공한다. 본발명은인 탄소복합체를형성하는단계, 그래핀이감싸는구조를갖는인 탄소그래핀복합체를형성하는단계및 인탄소그래핀을환원시키는단계를제공한다. 이로써, 본발명의환원된인 탄소그래핀복합체는표면의환원된그래핀이내부소재의부피팽창을억제하여전극의부피변화를감소시켜, 전지수명특성을향상시킬수 있다. 또한, 인탄소그래핀복합체표면의환원된그래핀은복합체내의인의낮은전기전도성을보완시킬수 있어율속특성을향상시킬수 있다.
-
公开(公告)号：KR1020170104035A
公开(公告)日：2017-09-14
申请号：KR1020160025733
申请日：2016-03-03
Applicant: 동국대학교 산학협력단
IPC: H01M4/587 , H01M4/38 , H01M10/0525 , D01F9/15 , D04H1/728
Abstract: 본발명은피치를도입한실리콘-카본나노섬유복합체의리튬이차전지용음극활물질및 이의제조방법에관한것으로서, 보다상세하게는폴리아크릴로니트릴(PAN)의일부를피치(Coal tar Pitch)로대체하여가격경쟁력이우수하며전자전도도가향상되어보다개선된전기화학특성을갖는리튬이차전지용음극활물질인실리콘-피치-카본나노섬유(SiO-Pitch-CNFs), 및 1) 분쇄과정을통한피치입자의크기를제어하는단계; 2) 실리콘분말과피치분말을고분자를용해시킨용액에넣고균일하게혼합하는단계; 3) 상기혼합용액을사용하여전기방사를진행하는단계; 4) 상기혼합물을열처리하여하소하는단계를포함하는상기실리콘-피치-카본나노섬유(SiO-Pitch-CNFs)를제조하는방법에관한것이다.
Abstract translation: 另外，本发明的有机硅通过替换，更具体地涉及一种聚丙烯腈（PAN）uiil部分间距（煤焦油沥青）将沥青涉及一种负极活性物质和一种制造碳纳米纤维复合材料的价格的方法 通过粉碎工序，碳纳米纤维（二氧化硅 - 俯仰 - 的CNF），和1）的竞争yiwoosu并且具有更加改善的电化学性质的有机硅的负极活性物质的电子传导性控制桨距颗粒的尺寸得到改善 - 间距 该方法包括： 2）将硅粉和沥青粉末混合在溶解有聚合物的溶液中并均匀混合; 3）使用混合溶液进行静电纺丝; 4），在硅包括煅烧和热处理所述混合物，一种用于制造碳纳米纤维（二氧化硅 - 俯仰 - 的CNF）的步骤 - 节距。
-
-
-
-
-
-
-
-
-
Search Results
56
records
(took 0.025 seconds)
