Abstract:
본 발명은 이온성 고분자를 포함하는 가교형 세라믹 코팅 분리막의 제조 방법, 이로부터 제조된 세라믹 코팅 분리막 및 이를 채용한 리튬이차전지에 관한 것으로서, 더욱 상세하게는 열적, 기계적 특성을 향상시키기 위한 세라믹 입자와, 싸이클 특성과 고율 특성을 향상시킬 수 있는 기능성 무기 첨가제와, 이들을 분리막 기재상에 결합시키기 위한 이온성 고분자로 구성되는 코팅재를 다공막 기재에 코팅하여 화학적 가교 방법에 의해 제조되도록 한 이온성 고분자를 포함하는 가교형 세라믹 코팅 분리막의 제조 방법, 이로부터 제조된 세라믹 코팅 분리막 및 이를 채용한 리튬이차전지에 관한 것이다. 리튬이차전지, 세라믹 코팅 분리막, 이온성 고분자, 열적 안전성, 싸이클 특성
Abstract:
PURPOSE: An electrode for secondary battery is provided to reduce the using amount of binder and improve the content of active material remarkably, by using mixing and spraying process, especially, phase transition method on the basis of solvent-nonsolvent interaction. CONSTITUTION: A manufacturing method of an electrode for secondary battery comprises: a step of manufacturing mixed slurry(22) by melting, dispersing and mixing electrode material including active material and polymer binder by the solvent of polymer binder; a step of spraying the mixed slurry on the electrode current collector(21) in film form; a step of immersing the mixed slurry spread electrode current collector into non-solvent which not dissolving the polymer binder; a step of causing the composition change of the mixed slurry by the inter-exchange and the inter-diffusion of the solvent and the non-solvent; a step of phase transition which is the solidification of polymer including liquid-liquid phase separation; a step of drying the combined material of the electrode current collector and electrode layer formed from the mixed slurry in a drying furnace; and a step of manufacturing the electrode in which porous electrode layer is laminated on the electrode current collector, by rolling.
Abstract:
본 발명은 리튬이차전지용 구형 양극 활물질의 제조방법에 관한 것으로서, 더욱 상세하게는 리튬계 화합물, 전이금속, 인산계 화합물 및 카본 공급원을 포함하는 혼합 원료를 초순수물에 균일하게 용해시킨 후 동결 구형화기에 넣어 급속 동결 후 승화시켜 고밀도 구형상 전구체를 제조하고 열처리하는 리튬이차전지용 구형 양극 활물질의 제조방법에 관한 것이다. 본 발명의 리튬이차전지용 구형 양극 활물질은 결정성이 우수하며, 카본 공급원의 영향으로 전기전도도가 우수하며, 입자 형상을 구형화함으로써 전극제조에 유리한 물질의 제조가 가능하다. 리튬이차전지, 양극 활물질, 동결 구형화기, 전기전도도
Abstract:
본발명은리튬기반전지음극을위한니켈실리사이드나노와이어에임베디드된실리콘나노와이어구조체에관한것으로서, 더욱상세하게는 NiSi나노와이어에 Si 나노와이어를플렉서블하게임베딩시켜서 Si 나노와이어가 Li과의합금화에의해팽창할때나배터리사용시수축할때 나타나는나노와이어가전류수집기로부터연결이끊어지는문제점등을개선한 NiSi나노와이어에임베디드된 Si 나노와이어구조체와이를포함하는애노드에관한것이다.
Abstract:
PURPOSE: A manufacturing method of a negative electrode material for is provided to be suitable for a mass production of a nano negative electrode material and to maximize uniform radiation by having a core and shell which contain an acrylonitrile-based copolymer. CONSTITUTION: A manufacturing method of a negative electrode material for secondary batteries comprises: a step of feeding 20-45 weight% of an acrylonitrile-based copolymer as a core material, 10-40 weight% of an acrylonitrile copolymer which is not the same as the core material, 1-35 weight% of a metal or metal oxide or metal sulfide, and 30-65 weight% of a solution mixture in a melt state; a step of forming a core/shell composite by applying voltage to the mixture; and a step of carbonizing and graphitizing the core/shell composite by heat-treating at 700-3000 °C.
Abstract:
PURPOSE: A positive electrode material is provided to reduce the diffusion distance of lithium or sodium ion, to have electrochemical activity which can be used as a positive electrode, and to make ion intercalation and deintercalation of lithium or sodium ion. CONSTITUTION: A positive electrode material has a particle size of 1-100 nm and a voltage flat plane of 3.7-4.0 V by discharging, is coated with carbon to increase conductivity, and comprises a compound indicated in chemical formula A_xMnPO_4F, where A is Li or Na or a mixture thereof, and 0
Abstract:
PURPOSE: A positive electrode for a secondary battery is provided to facilitate detection of voltage change in a specific region by mixing a phosphate-based compound with excellent thermal stability as a main active material and an oxide-based compound as an active material for voltage sensing. CONSTITUTION: A positive electrode for a secondary battery comprises a phosphate based active material represented by chemical formula 1: Li_(1+a)Fe_(1-x)M_x(PO_(4-b))X_b and an oxide based active material represented by chemical formula 2: Li_(1+a)(Ni_xCo_yA_z)O_(2-b)X_b. In chemical formula 1, -0.3
Abstract translation:目的:提供一种用于二次电池的正极,以便通过混合具有优良热稳定性的磷酸盐基化合物作为主要活性材料和基于氧化物的化合物作为电压感测的活性材料来检测特定区域的电压变化 。 构成:二次电池用正极包含由化学式1表示的磷酸酯类活性物质:Li(1 + a)Fe_(1-x)M_x(PO_(4-b))X_b,表示氧化物系活性物质 化学式2:Li(1 + a)(Ni_xCo_yA_z)O_(2-b)X_b。 在化学式1中,-0.3 <= a <= 0.3,0 <= b <= 0.5和0 <= x <= 1,M是Ni,Co,Mn或Mg,x是F,S或N. 化学式2,-0.5 <= a <= 0.5,0 <= b <= 0.3,0 <= x <= 0.8,0 <= y <= 1.0和0 <= z <= 0.7,A是Al或Mn ,并且X是F,S或N. [附图标记](AA)电压感测区域; (BB)充电; (CC)氧化物类活性物质; (DD)0重量%; (EE)2重量%; (FF)5重量%; (GG)10重量% (HH)放电
Abstract:
PURPOSE: A battery module is provided to stably secure electric connection states of respective unit cells, to be easily manufactured and assembled, and to provide excellent durability. CONSTITUTION: A battery module structure comprise: unit cells(3) in which each battery tap of a positive electrode and a negative electrode is formed on the edge in order to discharge electricity; many receptacles(5) integrated to each battery tap of the unit cells; and a bus bar(7) electrically connecting between the receptacles. The receptacles comprises an insert groove opened along a direction vertical veto a plane formed by the unit cells in order to form an electric connection state by an insertion part of the bus bar inserted along a direction parallel with the plane formed by the unit cells.