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1. 发明申请

WO2010047525A3 LITHIUM IRON PHOSPHATE HAVING AN OLIVINE STRUCTURE AND ANALYSIS METHOD THEREOF 审中-公开
标题翻译：具有橄榄结构的磷酸铁锂及其分析方法
公开(公告)号：WO2010047525A3
公开(公告)日：2010-07-29
申请号：PCT/KR2009006086
申请日：2009-10-21
申请人： LG CHEMICAL LTD , CHOY SANGHOON , LEE YONG TAE , PARK HONG-KYU , PARK SOO MIN , KIL HYO-SHIK , PARK CHEOL-HEE
发明人： CHOY SANGHOON , LEE YONG TAE , PARK HONG-KYU , PARK SOO MIN , KIL HYO-SHIK , PARK CHEOL-HEE
IPC分类号： C01B25/30
CPC分类号： H01M4/5825 , C01B25/45 , H01M4/136 , H01M4/624 , H01M4/625 , H01M10/0525 , H01M2004/021 , Y10T436/20
摘要： The present invention relates to a lithium iron phosphate having an olivine crystal structure, and more particularly, to an olivine lithium iron phosphate which has compositions of chemical formula (1) Li1+a Fe1-x Mx(PO4-b) Xb (where M, X, a, x, and b are as defined in the specification), contains 0.1~5 wt % of Li3PO4, and contains no or less than 0.25 wt % of Li2CO3. The lithium iron phosphate according to the present invention contains no lithium carbonate or an extremely small amount of lithium carbonate, and contains Li3PO4 which is very electrochemically stable and excellent in thermal safety and ionic conductivity. Thus, the lithium iron phosphate of the present invention shows superior stability during high temperature and storage conditions, and improved safety and rate capability when used as positive electrode active material for a lithium secondary battery.
摘要翻译：具有橄榄石晶体结构的磷酸铁锂技术领域本发明涉及具有橄榄石晶体结构的磷酸铁锂，更具体地涉及具有化学式（1）Li1 + a Fe1-x Mx（PO4-b）Xb（其中M ，X，a，x和b如说明书中所定义），含有0.1〜5wt％的Li 3 PO 4，并且不含或含有少于0.25wt％的Li 2 CO 3。根据本发明的磷酸铁锂不含碳酸锂或极少量的碳酸锂，并含有非常电化学稳定且热安全性和离子导电性优异的Li 3 PO 4。因此，本发明的磷酸铁锂在高温和储存条件下表现出优异的稳定性，并且当用作锂二次电池的正极活性材料时提高了安全性和倍率性能。

2. 发明申请

WO2010047552A3 POSITIVE ELECTRODE ACTIVE MATERIAL WITH ENHANCED ELECTRODE EFFICIENCY AND ENERGY DENSITY CHARACTERISTICS 审中-公开
标题翻译：具有增强电极效率和能量密度特性的正极电极活性材料
公开(公告)号：WO2010047552A3
公开(公告)日：2010-08-05
申请号：PCT/KR2009006141
申请日：2009-10-22
申请人： LG CHEMICAL LTD , CHOY SANGHOON , LEE YONG TAE , PARK HONG-KYU , PARK SOO MIN , KIL HYO-SHIK , PARK CHEOL-HEE , LEE JI EUN
发明人： CHOY SANGHOON , LEE YONG TAE , PARK HONG-KYU , PARK SOO MIN , KIL HYO-SHIK , PARK CHEOL-HEE , LEE JI EUN
IPC分类号： H01M4/58 , C01B25/26 , H01M4/62 , H01M10/05
CPC分类号： H01M4/5825 , C01B25/45 , H01M4/136 , H01M2006/5094
摘要： The present invention provides a positive electrode active material having a composition of LiFe(P1-XO4) (where P has a mole ratio of 0.910 to 0.999) of chemical formula (1). The positive electrode active material of the present invention has an operating efficiency leveled to the operating efficiency of a negative electrode active material, which is relatively low, and may improve the energy density of the positive electrode active material. Further, as the positive electrode active material, in which the mole ratio (1-x) of phosphorus (P) is adjusted to less than 1, has Fe2+ and Fe3+ coexisting therein, structural collapse caused by the deficiency of phosphorus (P) is prevented, ion conductivity is improved to achieve superior rate capabilities, and IR drop is suppressed during charging/discharging, thus improving energy density.
摘要翻译：本发明提供具有化学式（1）的LiFe（P1-XO4）（P的摩尔比为0.910〜0.999）的组成的正极活性物质。本发明的正极活性物质的操作效率达到了相对较低的负极活性物质的运转效率，能够提高正极活性物质的能量密度。此外，作为将磷（P）的摩尔比（1-x）调整为小于1的正极活性物质，其中共存有Fe 2+和Fe 3+，由磷缺乏引起的结构性崩溃（P）为防止离子传导性提高，达到优异的速率能力，并且在充放电期间抑制IR降低，从而提高能量密度。

3. 发明申请

WO2010047522A3 CATHODE COMPOSITE MATERIAL WITH IMPROVED ELECTRODE EFFICIENCY AND ENERGY DENSITY CHARACTERISTICS 审中-公开
标题翻译：具有改善的电极效率和能量密度特性的阴极复合材料
公开(公告)号：WO2010047522A3
公开(公告)日：2010-07-29
申请号：PCT/KR2009006082
申请日：2009-10-21
申请人： LG CHEMICAL LTD , CHOY SANGHOON , LEE YONG TAE , PARK HONG-KYU , PARK SOO MIN , KIL HYO-SHIK , PARK CHEOL-HEE
发明人： CHOY SANGHOON , LEE YONG TAE , PARK HONG-KYU , PARK SOO MIN , KIL HYO-SHIK , PARK CHEOL-HEE
IPC分类号： H01M4/52
CPC分类号： H01M4/5825 , C01B25/37 , H01M4/136 , H01M10/052 , H01M2006/5094
摘要： The present invention relates to a cathode composite material containing a cathode active substance with the composition of the chemical formula (1) LiFe (P1-XO4), and provides a cathode composite material wherein the mole ratio (1-x) of phosphorus (P) ranges from 0.910 to 0.999 in the chemical formula (1) so that the operating efficiency of said cathode active substance may be subject to leveling to the level of the anode active substance with a relatively low operating efficiency. Such cathode composite material maximizes the efficiency of the electrode active substance and minimizes material waste so that manufacturing cost may be reduced. Furthermore, an anode active substance the mole ratio (1-x) of phosphorus (P) whereof has been adjusted to less than 1 according to the present invention is advantageous in that Fe2+ and Fe3+ co-exist, so that structure decay caused by deficiency of phosphorus (P) does not take place, and ionic conductivity is improved so that its rate characteristics are excellent, IR drop phenomena is suppressed during charging and discharging, and a high energy density is provided.
摘要翻译：本发明涉及一种阴极复合材料，其含有具有化学式（1）LiFe（P1-XO4）的组成的阴极活性物质，并且提供一种阴极复合材料，其中磷的摩尔比（1-x））在化学式（1）中在0.910至0.999的范围内，使得所述正极活性物质的操作效率可以以相对低的操作效率经受平整至负极活性物质的水平。这种阴极复合材料使电极活性物质的效率最大化并且使材料浪费最小化，从而可以降低制造成本。此外，根据本发明将磷（P）的摩尔比（1-x）调节至小于1的阳极活性物质的优点在于Fe 2+和Fe 3+共存，从而由缺陷引起的结构衰变不发生磷（P），并且离子传导性得到改善，使得其速率特性优异，在充电和放电期间抑制IR下降现象，并且提供高能量密度。

4. 发明申请

WO2010047524A3 LITHIUM IRON PHOSPHATE HAVING AN OLIVINE STRUCTURE, AND PREPARATION METHOD THEREOF 审中-公开
标题翻译：具有OLIVINE结构的锂铁磷酸盐及其制备方法
公开(公告)号：WO2010047524A3
公开(公告)日：2010-07-29
申请号：PCT/KR2009006084
申请日：2009-10-21
申请人： LG CHEMICAL LTD , CHOY SANGHOON , LEE YONG TAE , PARK HONG-KYU , PARK SOO MIN , LEE JI EUN
发明人： CHOY SANGHOON , LEE YONG TAE , PARK HONG-KYU , PARK SOO MIN , LEE JI EUN
IPC分类号： C01B25/30
CPC分类号： C01B25/45 , H01M4/043 , H01M4/131 , H01M4/5825 , H01M2004/021
摘要： The present invention relates to a lithium iron phosphate having an olivine crystal structure, and more particularly, to an olivine lithium iron phosphate which consists of secondary particles having a mean diameter (D50) of 5~100 µm where primary particles having a mean diameter (D50) of 50~550 nm are agglomerated, the primary particles and the secondary particles have compositions of chemical formula (1) Li1+a Fe1-x Mx(PO4-b) Xb (where M, X, a, x, and b are as defined in the specification), and the secondary particles have a porosity of 15~40%. The lithium iron phosphate according to the present invention has the form of secondary particles, and thus can be produced into an electrode for a lithium secondary battery having a high volume density. The lithium iron phosphate of the present invention shortens mixing time to improve process efficiency. Further, the lithium iron phosphate of the present invention has a high porosity, and therefore at least a part of secondary particles collapses and is particulated into primary particles during the compression process for manufacturing an electrode, thus preventing the degradation of ionic conductivity caused by large particle size.
摘要翻译：本发明涉及具有橄榄石晶体结构的磷酸铁锂，更具体地说，涉及一种平均直径（D50）为5〜100μm的二次粒子的橄榄石磷酸铁锂，其中一次粒子的平均直径（ D50）为50〜550nm附聚，初级粒子和二次粒子具有化学式（1）Li1 + a Fe1-xMx（PO4-b）Xb（其中M，X，a，x和b 如本说明书中所定义），二次颗粒的孔隙率为15〜40％。根据本发明的磷酸铁锂具有二次粒子的形式，因此可以制成具有高体积密度的锂二次电池用电极。本发明的磷酸铁锂缩短混合时间以提高加工效率。此外，本发明的磷酸铁锂具有高孔隙率，因此在制造电极的压缩过程中至少一部分二次粒子塌陷并被微粒化成一次粒子，从而防止由于大的电极引起的离子导电性的降低粒度。

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