公开(公告)号：KR1020020046658A

公开(公告)日：2002-06-21

申请号：KR1020000076942

申请日：2000-12-15

Applicant: 한국과학기술원

Inventor： 이재영 ,  박성철 ,  김기태 ,  강용묵 ,  김유민 ,  김현석

IPC: H01M10/38

CPC classification number: H01M4/505 ,  H01M4/0402 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/525 ,  H01M10/052

Abstract: PURPOSE: A method for treating the surface of laminated oxide for the cathode of a lithium secondary battery is provided, to improve the heat stability of a lithium secondary battery by using the laminated oxide as an active material. CONSTITUTION: The method comprises the step of coating the surface of laminated oxide with lithium transition metal oxide. Preferably the coating process comprises the steps of weighing the lithium transition oxide to be coated quantitatively and dissolving it into a solvent to prepare a solution; controlling the pH of the solution; heating the solution to control the concentration of the solution; adding laminated oxide to the solution and mixing them; filtering out the laminated oxide whose surface is coated with the lithium transition metal oxide from the solution; and drying and heating the obtained laminated oxide. The lithium transition metal oxide is acetates, hydroxides, nitrates, sulfates or chlorides of Li, Mn, Co, Al, Fe, V, Cr, Cu, Ti, W, Ta, Mg or Mo.

Abstract translation: 目的：提供一种用于处理锂二次电池阴极的层叠氧化物表面的方法，以通过使用层叠氧化物作为活性材料来提高锂二次电池的热稳定性。 构成：该方法包括用锂过渡金属氧化物涂覆层叠氧化物的表面的步骤。 优选地，涂覆方法包括以下步骤：定量地称量待涂覆的锂过渡氧化物，并将其溶解在溶剂中以制备溶液; 控制溶液的pH; 加热溶液以控制溶液的浓度; 将叠层氧化物加入到溶液中并混合; 从溶液中过滤出表面用锂过渡金属氧化物涂覆的层叠氧化物; 干燥并加热得到的层叠氧化物。 锂过渡金属氧化物是Li，Mn，Co，Al，Fe，V，Cr，Cu，Ti，W，Ta，Mg或Mo的乙酸盐，氢氧化物，硝酸盐，硫酸盐或氯化物。

公开(公告)号：KR1020010102593A

公开(公告)日：2001-11-16

申请号：KR1020000023286

申请日：2000-05-01

Applicant: 한국과학기술원

Inventor： 이재영 ,  강윤선 ,  이호 ,  박성철 ,  강용묵

IPC: H01M2/14

CPC classification number: C23C14/5826 ,  C23C14/08 ,  C23C14/58 ,  C23C14/584 ,  C23C14/5853 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/485

Abstract: A method for crystallizing a lithium transition metal oxide thin film for an electrode of a thin film-type lithium secondary battery is provided, in which the lithium transition metal oxide thin film is reacted with oxygen or argon plasma induced by a microwave or a radio frequency wave, thereby obtaining an excellent lithium transition metal oxide thin film in a degree of crystallization and electrochemical characteristics.

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

Inventor： 이재영 ,  김현석 ,  한상철 ,  박성철 ,  강윤선 ,  김승회 ,  김진호 ,  김유민 ,  안효준

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。

公开(公告)号：KR1020010088037A

公开(公告)日：2001-09-26

申请号：KR1020000012023

申请日：2000-03-10

Applicant: 한국과학기술원

Inventor： 이재영 ,  조민희 ,  강윤선 ,  김해열 ,  박성철 ,  강용묵

IPC: C23C4/10

CPC classification number: C23C14/5826 ,  C23C14/0617 ,  C23C14/5846

Abstract: PURPOSE: A method for stabilizing an aluminum nitride thin film using plasma treatment is provided to solve the biggest problem of the hydrogen addition, chemical stability, by using microwave plasma treatment, and obtain a high quality aluminum nitride thin film displaying a very high surface flatness by plasma treating a surface flatness improved aluminum nitride thin film. CONSTITUTION: In a process for treating an aluminum nitride thin film, the method for stabilizing an aluminum nitride thin film using plasma treatment comprises the process of performing of plasma treatment after the process of adding hydrogen to the aluminum nitride thin film so as to improve the surface elasticity and stability of the aluminum nitride thin film, wherein a gas used in the plasma treatment is an inert gas selected from nitrogen, argon, helium, neon, krypton or xenon, or a mixed gas in which a gas used in the plasma treatment is an inert gas selected from nitrogen, argon, helium, neon, krypton or xenon is mixed in a volume ratio of nitrogen:inert gas=0.1:0.9 9 - 0.99:0.1, and wherein the conditions of the plasma treatment include 50 to 100 sccm of gas flow used in the plasma treatment, a pressure of 0.5 to 10 Torr, and a reaction time of 1 to 20 minutes.

Abstract translation: 目的：提供使用等离子体处理来稳定氮化铝薄膜的方法，以解决通过使用微波等离子体处理的氢添加，化学稳定性的最大问题，并获得显示非常高的表面平坦度的高品质氮化铝薄膜 通过等离子体处理表面平整度改善了氮化铝薄膜。 构成：在用于处理氮化铝薄膜的方法中，使用等离子体处理来稳定氮化铝薄膜的方法包括在向氮化铝薄膜添加氢之后进行等离子体处理的方法，以改善 氮化铝薄膜的表面弹性和稳定性，其中在等离子体处理中使用的气体是选自氮，氩，氦，氖，氪或氙的惰性气体，或其中在等离子体处理中使用的气体的混合气体 是选自氮气，氩气，氦气，氖气，氪气或氙气的惰性气体以体积比的氮气：惰性气体= 0.1:0.99-0.99:0.1进行混合，并且其中等离子体处理的条件包括50至100 在等离子体处理中使用的气体流量sccm，压力为0.5〜10托，反应时间为1〜20分钟。

公开(公告)号：KR1020010061345A

公开(公告)日：2001-07-07

申请号：KR1019990063838

申请日：1999-12-28

Applicant: 한국과학기술원

Inventor： 이재영 ,  나성환 ,  한영수 ,  박성철 ,  유지상 ,  이상민

IPC: H01M4/66

Abstract: PURPOSE: Provided is a process for producing manganic acid-based electrode active material with long cycle life of a lithium ion secondary cell by a liquid-phase substitution method without using metal alkoxide material. CONSTITUTION: The active material (LiMxMn2-xO4) of the lithium ion secondary cell is produced by the process comprising the steps of: dissolving lithium acetate and manganese acetate in distilled water; adding a substituting metal(M) to the mixture solution and gelatinizing the solution and drying; heat-treating at a temperature of 500-800deg.C, wherein M is a transition metal element stable in air and soluble in water or alcohol, and x is 0.01-0.5.

Abstract translation: 目的：提供一种不使用金属醇盐材料通过液相置换法生产锂离子二次电池的循环寿命长的锰酸类电极活性材料的方法。 构成：锂离子二次电池的活性物质（LiMxMn2-xO4）的制造方法包括以下步骤：将乙酸锂和乙酸锰溶于蒸馏水中; 向混合溶液中加入取代金属（M），使溶液糊化并干燥; 在500-800℃的温度下进行热处理，其中M是在空气中稳定且可溶于水或醇的过渡金属元素，x为0.01-0.5。

公开(公告)号：KR1020010045209A

公开(公告)日：2001-06-05

申请号：KR1019990048415

申请日：1999-11-03

Applicant: 한국과학기술원

Inventor： 이재영 ,  박성철 ,  한영수 ,  나성환 ,  김해열 ,  조민희

IPC: H01M4/32

Abstract: PURPOSE: Provided is a lithium-nickel-based oxide composition for a positive electrode of a lithium ion secondary battery, of which the nickel is substituted partially by iron and cobalt, therefore, electrode life-time and fast discharge efficiency is improved. CONSTITUTION: The lithium-nickel-based oxide composition represented by the formula: LiNi(1-x-y)Fe(x)Co(y)O2 is produced by a process comprising the steps of: mixing carbonate, hydroxide, or nitrate of each of the lithium, the nickel, the iron, and the cobalt; grinding and pelletizing the mixture and then primarily heat-treating at a temperature of 650-850 for 6-48 hours under oxygen; regrinding and pelletizing the primarily heat-treated pellet and then secondarily heat-treating at 650-850 for 6-48 hours under oxygen; regrinding the secondarily heat-treated pellet and selecting powdery active material having an average particle size of less than 45micrometer. In the formula, each of x and y is an atom fraction, wherein 0

Abstract translation: 目的：提供一种用于锂离子二次电池正极的锂镍氧化物组合物，其中镍被铁和钴部分取代，因此电极寿命和快速放电效率得到改善。 构成：由LiNi（1-xy）Fe（x）Co（y）O 2表示的锂镍氧化物组合物通过包括以下步骤的方法制备：将碳酸锂，氢氧化物或硝酸盐各自混合 锂，镍，铁和钴; 研磨并造粒混合物，然后在650-850℃的温度下在氧气下进行6-48小时的热处理。 重新研磨和造粒主要经热处理的颗粒，然后在氧气下在650-850℃下二次热处理6-48小时; 重新研磨二次热处理的颗粒并选择平均粒度小于45微米的粉末状活性物质。 在该式中，x和y各自为原子级分，其中0