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1. 发明申请

US20100261060A1 LITHIUM IRON PHOSPHATE HAVING OLIVINE STRUCTURE AND METHOD FOR ANALYZING THE SAME 审中-公开
标题翻译：具有OLIVINE结构的锂铁磷酸盐及其分析方法
公开(公告)号：US20100261060A1
公开(公告)日：2010-10-14
申请号：US12709021
申请日：2010-02-19
申请人： Sanghoon CHOY , Yong Tae Lee , Hong-Kyu Park , Soo Min Park , Hyo-shik Kil , Cheol-Hee Park
发明人： Sanghoon CHOY , Yong Tae Lee , Hong-Kyu Park , Soo Min Park , Hyo-shik Kil , Cheol-Hee Park
IPC分类号： H01M4/58 , H01M4/90 , G01N33/00 , G01N23/20
CPC分类号： H01M4/5825 , C01B25/45 , H01M4/136 , H01M4/624 , H01M4/625 , H01M10/0525 , H01M2004/021 , Y10T436/20
摘要： Provided is an olivine-type lithium iron phosphate having a composition represented by Formula I, comprising 0.1 to 5% by weight of Li3PO4, and comprising no Li2CO3 or, if present, comprising Li2CO3 in an amount less than 0.25% by weight: Lii+aFe1−xMx(PO4−b)Xb (I) wherein M, X, a, x and b are as defined above.The lithium iron phosphate comprises no lithium carbonate (Li2CO3) or, if present, comprises the Li2CO3 in an extremely small amount, and comprises Li3PO4 having superior electrochemical stability, thermal stability and ionic conductivity, thus advantageously imparting high-temperature and storage stability as well as stability and rate properties to lithium secondary batteries, when used as a cathode active material for the lithium secondary batteries.
摘要翻译：本发明提供一种具有由式I表示的组成的橄榄石型磷酸铁锂，其包含0.1至5重量％的Li 3 PO 4，并且不包含Li 2 CO 3或如果存在，其包含少于0.25重量％的Li 2 CO 3：Li + aFe1-xMx（PO4-b）Xb（I）其中M，X，a，x和b如上所定义。磷酸铁锂不包含碳酸锂（Li 2 CO 3），或者如果存在的话，极少量包含Li 2 CO 3，并且包含具有优异的电化学稳定性，热稳定性和离子导电性的Li 3 PO 4，因此有利地赋予高温和储存稳定性作为锂二次电池的稳定性和速率特性，用作锂二次电池的正极活性物质。

2. 发明申请

US20100239909A1 CATHODE MIX CONTAINING HAVING IMPROVED EFFICIENCY AND ENERGY DENSITY OF ELECTRODE 有权
标题翻译：含有改善效率和电极密度的阴极混合物
公开(公告)号：US20100239909A1
公开(公告)日：2010-09-23
申请号：US12709011
申请日：2010-02-19
申请人： Sanghoon CHOY , Yong Tae LEE , Hong-Kyu PARK , Soo Min PARK , Hyo-Shik KIL , Cheol-Hee PARK
发明人： Sanghoon CHOY , Yong Tae LEE , Hong-Kyu PARK , Soo Min PARK , Hyo-Shik KIL , Cheol-Hee PARK
IPC分类号： H01M4/52
CPC分类号： H01M4/5825 , C01B25/37 , H01M4/136 , H01M10/052 , H01M2006/5094
摘要： Provided is a cathode mix for lithium secondary batteries, comprising a cathode active material having a composition represented by the following Formula I: LiFe(P1-XO4) (I) wherein a molar fraction (1-x) of phosphorus (P) is in the range of 0.910 to 0.999, to allow operational efficiency of the cathode active material to be leveled to a lower operational efficiency of an anode active material and improve energy density of the cathode active material.The cathode mix maximizes operational efficiency of batteries, minimizes electrode waste and thus reduces manufacturing costs of batteries. Furthermore, The cathode active material, wherein a molar fraction (1-x) of phosphorus (P) is lower than 1, according to the present invention contains both Fe2+ and Fe3+, thus advantageously causing no structural deformation, improving ionic conductivity, exhibiting superior rate properties, inhibiting IR drop upon charge/discharge, thereby imparting high energy density to batteries.
摘要翻译：提供一种用于锂二次电池的阴极混合物，其包含具有由下式I表示的组成的阴极活性材料：其中磷（P）的摩尔分数（1-x）在其中的LiFe（P1-XO4）（I）范围为0.910至0.999，以使阴极活性材料的操作效率平衡至阳极活性材料的较低操作效率，并提高阴极活性材料的能量密度。阴极混合物可最大限度地提高电池的运行效率，最大限度地减少电极浪费，从而降低电池的制造成本。此外，根据本发明的磷（P）的摩尔分数（1-x）小于1的正极活性物质既含有Fe 2+和Fe 3+，因此有利地不引起结构变形，提高离子电导率，显示出优异的速率特性，在充电/放电时抑制IR降低，从而赋予电池高的能量密度。

3. 发明申请

US20100233540A1 LITHIUM IRON PHOSPHATE HAVING OLIVINE STRUCTURE AND METHOD FOR PREPARING THE SAME 有权
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：US20100233540A1
公开(公告)日：2010-09-16
申请号：US12709200
申请日：2010-02-19
申请人： Sanghoon CHOY , Yong Tae Lee , Hong-Kyu Park , Soo Min Park , Ji Eun Lee
发明人： Sanghoon CHOY , Yong Tae Lee , Hong-Kyu Park , Soo Min Park , Ji Eun Lee
IPC分类号： H01M4/525
CPC分类号： C01B25/45 , H01M4/043 , H01M4/131 , H01M4/5825 , H01M2004/021
摘要： Provided is an olivine-type lithium iron phosphate composed of secondary particles having a mean particle diameter (D50) of 5 to 100 μm, formed by aggregation of primary particles having a mean particle diameter (D50) of 50 to 550 nm, wherein the primary and secondary particles have a composition represented by Formula I below and the secondary particles have a porosity of 15 to 40%: Li1+aFe1-xMx(PO4-b)Xb (I) wherein M, X, a, x and b are as defined above.The olivine-type lithium iron phosphate is in the form of secondary particles, thus imparting a high bulk density to lithium secondary batteries and exhibiting superior process efficiency due to shortened mixing time, when used to fabricate the lithium secondary batteries. Furthermore, the olivine-type lithium iron phosphate has the high porosity, thus allowing at least a portion of the secondary particles to be deformed and converted into primary particles in the process of pressing to fabricate electrodes and preventing deterioration in ionic conductivity due to the large particle diameter.
摘要翻译：本发明提供一种由平均粒径（D50）为5〜100μm的二次粒子构成的橄榄石型磷酸铁锂，其通过聚集平均粒径（D50）为50〜550nm的一次粒子而形成，其中，二次粒子具有下述式I所示的组成，二次粒子的孔隙率为15〜40％：Li1 + aFe1-xMx（PO4-b）Xb（I）其中M，X，a，x和b分别为以上定义。橄榄石型磷酸铁锂是二次粒子的形式，因此当锂二次电池用于制造锂二次电池时，由于缩短了混合时间，因此赋予锂二次电池高的堆积密度，并表现出优异的工艺效率。此外，橄榄石型磷酸铁锂具有高孔隙率，从而允许至少一部分二次粒子在压制过程中变形并转化为一次粒子，以制造电极，并防止由于大的离子导电性导致的劣化粒径。

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