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公开(公告)号：KR1020120090405A
公开(公告)日：2012-08-17
申请号：KR1020110010807
申请日：2011-02-07
Applicant: 한국과학기술연구원
IPC: H01M4/485 , H01M10/052 , B82B3/00
CPC classification number: H01M4/485 , B82Y30/00 , B82Y40/00 , C01G23/005 , C01P2002/72 , C01P2004/03 , C01P2004/04 , C01P2004/64 , C01P2006/12 , C01P2006/40 , Y02E60/122 , Y02P20/544
Abstract: PURPOSE: A manufacturing method of lithium titanium oxide nanoparticle is provided to provide lithium titanium oxide nanoparticle having excellent extremely uniform particle size distribution, very high lithium-ion transfer rate, high ion conductivity and excellent electrochemical performance. CONSTITUTION: A manufacturing method of lithium titanium oxide nanoparticle comprises a step of preparing lithium precursor solution and titanium precursor solution, a step of forming lithium titanium oxide based negative electrode active material nanoparticle in supercritical fluid condition, by accepting the lithium precursor solution and the titanium precursor solution in a reactor; and a step of cleaning and drying the nanoparticles. The lithium titanium oxide negative electrode active material nanoparticle is a spinel type Li4/3Ti5/3O4 negative electrode active material nanoparticle.
Abstract translation: 目的：提供一种锂钛氧化物纳米粒子的制造方法，以提供极其均匀的粒度分布，非常高的锂离子转移率，高离子电导率和优异的电化学性能的钛酸锂纳米粒子。 构成：锂二氧化钛纳米颗粒的制造方法包括制备锂前体溶液和钛前体溶液的步骤，通过接受锂前体溶液和钛来制备超临界流体条件下形成基于二氧化钛的负极活性物质纳米颗粒的步骤 前体溶液; 以及清洁和干燥纳米颗粒的步骤。 锂钛氧化物负极活性物质纳米粒子是尖晶石型Li4 / 3Ti5 / 3O4负极活性物质纳米粒子。
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2.发明授权
公开(公告)号：KR101282593B1
公开(公告)日：2013-07-12
申请号：KR1020120048704
申请日：2012-05-08
Applicant: 한국과학기술연구원
IPC: H01M4/1391 , H01M4/485 , H01M4/583 , H01M10/05
CPC classification number: H01M4/366 , H01M4/1391 , H01M4/485 , H01M4/587 , H01M4/625 , H01M10/052
Abstract: PURPOSE: A carbon-coating method of a lithium titanium oxide-based negative electrode active material is provided to provide a negative electrode active material nanoparticle with excellent electric conductivity and ion conductivity, high electrochemical performance, and high discharging rate. CONSTITUTION: A carbon-coating method of a lithium titanium oxide-based negative electrode active material comprises: a step of forming a solution including a negative electrode active material represented by chemical formula: Li4Ti5O12 under the condition; a step of separating a negative electrode active material nanoparticle from the solution; and a step of inserting the negative electrode active material nanoparticle, and coating the surface of the nanoparticle. [Reference numerals] (a) Example 1; (b) Comparative example
Abstract translation: 目的：提供一种基于氧化钛锂的负极活性物质的碳涂覆方法，以提供具有优异的导电性和离子传导性，高电化学性能和高放电率的负极活性材料纳米颗粒。 锂离子二氧化钛系负极活性物质的碳涂覆方法包括：在该条件下形成包含由化学式：Li 4 Ti 5 O 12表示的负极活性物质的溶液的步骤; 将负极活性物质纳米粒子与溶液分离的工序; 以及插入负极活性物质纳米粒子，涂布纳米粒子表面的工序。 （a）实施例1; （b）比较例
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公开(公告)号：KR101191155B1
公开(公告)日：2012-10-15
申请号：KR1020110010807
申请日：2011-02-07
Applicant: 한국과학기술연구원
IPC: H01M4/485 , H01M10/052 , B82B3/00
CPC classification number: H01M4/485 , B82Y30/00 , B82Y40/00 , C01G23/005 , C01P2002/72 , C01P2004/03 , C01P2004/04 , C01P2004/64 , C01P2006/12 , C01P2006/40 , Y02E60/122 , Y02P20/544
Abstract: 본 발명은 리튬 티타늄 산화물계 음극활물질 나노입자의 입자의 제조방법에 관한 것으로서, 특히 초임계유체 조건을 이용하는 리튬 티타늄 산화물계 음극활물질 나노입자 제조방법에 관한 것으로서, 본 발명의 리튬 티타늄 산화물계 음극활물질 나노입자의 제조방법은, (a) 리튬 전구체 용액 및 티타늄 전구체 용액을 준비하는 단계, (b) 상기 리튬 전구체 용액 및 티타늄 전구체 용액을 반응기에 도입하여 초임계유체 조건에서 리튬 티타늄 산화물계 음극활물질 나노입자를 형성하는 단계 및 (c) 상기 나노입자를 세정 및 건조하는 단계를 포함하는 것이고, 단계 (c) 이후에, (d) 상기 나노입자를 500 ~ 1000 ℃에서 10분 내지 24 시간 동안 소성하는 단계를 더 포함하는 것일 수 있다.
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