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公开(公告)号：KR1020130029667A
公开(公告)日：2013-03-25
申请号：KR1020110093079
申请日：2011-09-15
Applicant: 고려대학교 산학협력단
IPC: C01B25/45 , H01M4/58 , H01B1/06 , H01M10/0525
CPC classification number: C01B25/45 , C01P2004/24 , C01P2006/40 , H01M4/5825 , H01M10/052
Abstract: PURPOSE: Lithium iron phosphate, a producing method thereof, and an electrochemical device including thereof are provided to improve the lithium diffusivity of conventional lithium iron phosphate by being synthesized at a relatively low temperature. CONSTITUTION: A producing method of lithium iron phosphate comprises the following steps: dissolving lithium acetate, iron sulfate, and ammonium dihydrogen phosphate in distilled water in a molar ratio of 1-3:1:1 to obtain a mixed solution; adding ethylene glycol into the mixed solution for adjusting the shape of the finally produced lithium iron phosphate; and hydrothermally synthesizing the mixed solution at 150-200 deg. C for 10-14 hours in the pressure of 3-6 bar.
Abstract translation: 目的：提供磷酸铁锂及其制备方法及其电化学装置，以通过在较低温度下合成来改善常规磷酸铁锂的锂扩散性。 构成：磷酸铁锂的制造方法包括以下步骤：将乙酸锂，硫酸铁和磷酸二氢铵溶解在蒸馏水中，摩尔比为1-3:1:1，得到混合溶液; 在混合溶液中加入乙二醇以调节最终生产的磷酸铁锂的形状; 并在150-200度水热合成混合溶液。 C为10-14小时，压力为3-6巴。
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Patent Agency Ranking2.发明公开습식 기계화학적 밀링을 이용한 리튬 아이언 포스페이트 제조 방법, 그 방법에 의해 제조된 리튬 아이언 포스페이트및 이를 양극 활물질에 포함하는 리튬이차전지 有权使用湿法机械研磨制备LIFEPO4的方法和使用该方法制造的LIFEPO4
公开(公告)号：KR1020100100486A
公开(公告)日：2010-09-15
申请号：KR1020090019403
申请日：2009-03-06
Applicant: 고려대학교 산학협력단 , 주식회사 엘 앤 에프
CPC classification number: H01M4/5825 , C01B25/375 , H01M4/366 , H01M4/583 , H01M4/625 , H01M10/052 , Y02E60/122
Abstract: PURPOSE: A manufacturing method of lithium iron phosphate, the lithium iron phosphate manufactured therefrom, and a lithium secondary battery including thereof are provided to simplify the manufacturing process of the lithium iron phosphate by removing a transition metal substitution process. CONSTITUTION: A manufacturing method of lithium iron phosphate comprises the following steps: inserting a starting material to a milling bowl(S110); inserting a wet milling media to the milling bowl(S120); forming a precursor of the lithium iron phosphate through wet milling(S130); and synthesizing the lithium iron phosphate by heat-processing the precursor(S140).
Abstract translation: 目的：提供磷酸铁锂，由其制造的磷酸铁锂及其二次电池的制造方法，以通过去除过渡金属取代工艺来简化磷酸铁锂的制造过程。 构成：磷酸铁锂的制造方法包括以下步骤：将起始材料插入研磨钵（S110）中; 将湿研磨介质插入研钵中（S120）; 通过湿法研磨形成磷酸铁锂的前体（S130）; 并通过加热前体合成磷酸铁锂（S140）。
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3.发明授权리튬 이차전지용 캐소드의 제조방법, 이에 의해서 제조된리튬 이차전지용 캐소드 및 이를 포함하는 리튬 이차전지 失效用于制备锂二次电池阴极电极的方法，包括阴极电极的方法和锂二次电池制备的阴极电极
公开(公告)号：KR100805267B1
公开(公告)日：2008-02-20
申请号：KR1020060098715
申请日：2006-10-11
Applicant: 고려대학교 산학협력단
CPC classification number: H01M4/0404 , C01P2002/70 , C01P2004/03 , H01M4/0471 , H01M4/131 , H01M4/1391 , H01M4/621 , H01M4/624 , H01M10/0525 , H01M2004/021 , H01M2004/027
Abstract: A lithium secondary battery is provided to simplify a conventional coating process for manufacturing a cathode, and to realize excellent cycling stability and structural stability by preventing dissolution of a cathode active material caused by an electrolyte while maintaining the initial capacity. A lithium secondary battery comprises: an anode; a cathode obtained by mixing 100 parts by weight of a lithium transition metal oxide, 5-20 parts by weight of a conductive agent and 3-15 parts by weight of a binder, adding to the resultant mixture 2-4 wt.% of any one compound selected from ZrO2, Al2O3, SiO2, ZnO, TiO2 and SnO2 based on the weight of the lithium transition metal oxide to obtain slurry, and coating a collector with the slurry, followed by drying and rolling; a separator interposed between the anode and the cathode; and an electrolyte containing LiPF6.
Abstract translation: 提供锂二次电池以简化用于制造阴极的常规涂覆工艺，并且通过防止由电解质引起的阴极活性材料的溶解而保持初始容量而实现优异的循环稳定性和结构稳定性。 锂二次电池包括：阳极; 通过将100重量份的锂过渡金属氧化物，5-20重量份的导电剂和3-15重量份的粘合剂混合而获得的阴极，向所得混合物中加入2-4重量％的任何 一种选自ZrO 2，Al 2 O 3，SiO 2，ZnO，TiO 2和SnO 2的化合物，以获得浆料，并用浆料涂布集电体，然后干燥和轧制; 介于阳极和阴极之间的隔膜; 和含有LiPF 6的电解质。
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公开(公告)号：KR101325911B1
公开(公告)日：2013-11-07
申请号：KR1020110093079
申请日：2011-09-15
Applicant: 고려대학교 산학협력단
IPC: C01B25/45 , H01M4/58 , H01B1/06 , H01M10/0525
Abstract: 본 발명은 리튬 아이언 포스페이트의 제조방법에 관한 것으로서, 리튬 아세테이트(lithium acetate dihydrate, CH
3 COOLi), 아이언 설페이트(iron sulfate pentahydrate, FeSO
4 ·7H
2 O), 암모늄 다이하이드로겐 포스페이트(ammonium dihydrogen phosphate, (NH
4 )H
2 PO
4 )를 출발 물질로 사용하고, 에틸렌 글리콜을 첨가하여 리튬이온전지용 양극용 활물질로 사용될 수 있는 리튬 아이언 포스페이트(LiFePO
4 )를 수열합성하는 것을 특징으로 하며, 수열합성 공정에서 LiFePO
4 의 형상을 리튬 탈리가 용이하도록 조절하는 것을 특징으로 하고, 본 발명에 따른 리튬 아이언 포스페이트의 제조방법은 수열합성을 통하여 비교적 낮은 온도에서 합성이 이루어지므로 에너지 소모량이 작아 공정의 효율이 우수하고, 또한 에틸렌 글리콜을 첨가하여 리튬 탈리 방향으로 입자의 크기를 감소되어 리튬 확산 거리가 감소될 수 있도록 입자 형상을 조절할 수 있으므로 종래 리튬 아이언 포스페이트가 갖고 있는 낮은 전기전도도 및 리튬 확산도를 개선시켜서 효율이 우수한 리튬이차전지의 제작이 가능하다.Abstract translation: 目的：提供磷酸铁锂及其制备方法及其电化学装置，以通过在较低温度下合成来改善常规磷酸铁锂的锂扩散性。 构成：磷酸铁锂的制造方法包括以下步骤：将乙酸锂，硫酸铁和磷酸二氢铵溶解在蒸馏水中，摩尔比为1-3:1:1，得到混合溶液; 在混合溶液中加入乙二醇以调节最终生产的磷酸铁锂的形状; 并在150-200度水热合成混合溶液。 C为10-14小时，压力为3-6巴。
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公开(公告)号：KR1020120023270A
公开(公告)日：2012-03-13
申请号：KR1020100085544
申请日：2010-09-01
Applicant: 고려대학교 산학협력단
IPC: H01M4/58 , H01M10/0525 , C01B25/45 , H01M4/131
CPC classification number: C01B25/45 , C01P2006/40 , H01M4/136 , H01M4/5825 , H01M10/0525 , Y02E60/122
Abstract: PURPOSE: A manufacturing method of LiFePO4 for lithium secondary battery positive electrode material is provided to control the shape of particle to the shape in which lithium ions are easily inserted or extracted, by controlling the concentration and pH of starting material, thereby improving conductivity. CONSTITUTION: A manufacturing method of LiFePO4 for lithium secondary battery positive electrode material comprises: lithium acetate, iron sulfate and ammonium dihydrogen phosphate into distilled water; a step of mixing the solution in container; a step of adding pH modifier for controlling the pH of the mixed solution; and a step of putting the mixed solution into hydrothermal synthesizer, and then hydrothermal synthesizing the same. The molar ratio of the lithium acetate, iron sulfate and ammonium dihydrogen phosphate dissolved into the distilled water is 1-3:1:1.
Abstract translation: 目的：提供锂二次电池正极材料的LiFePO 4的制造方法，通过控制原料的浓度和pH，将粒子的形状控制为易于插入或提取锂离子的形状，从而提高导电性。 构成：用于锂二次电池正极材料的LiFePO 4的制造方法包括：将乙酸锂，硫酸铁和磷酸二氢铵转化成蒸馏水; 将溶液混合在容器中的步骤; 添加pH调节剂以控制混合溶液的pH的步骤; 并将混合溶液放入水热合成器中，然后水热合成。 溶解在蒸馏水中的乙酸锂，硫酸铁和磷酸二氢铵的摩尔比为1-3:1:1。
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6.发明授权습식 기계화학적 밀링을 이용한 리튬 아이언 포스페이트 제조 방법, 그 방법에 의해 제조된 리튬 아이언 포스페이트및 이를 양극 활물질에 포함하는 리튬이차전지 有权采用湿式机械化学研磨法制备LiFePO4的方法和使用该方法制备的LiFePO4
公开(公告)号：KR101078607B1
公开(公告)日：2011-11-01
申请号：KR1020090019403
申请日：2009-03-06
Applicant: 고려대학교 산학협력단 , 주식회사 엘 앤 에프
Abstract: 본발명에따른 LiFePO제조방법은 LiFePO합성을위한출발물질에습식밀링매개체를첨가함으로써별도의흑연첨가제를첨가하지않더라도열처리과정에서잔류흑연이합성된 LiFePO표면에코팅됨으로써 LiFePO의전기전도도문제를해결할수 있는장점이있다.
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