公开(公告)号：US20080026292A1

公开(公告)日：2008-01-31

申请号：US11688358

申请日：2007-03-20

申请人： Jens Paulsen ,  Hong-Kyu Park ,  Sun SHIN ,  Sinyoung PARK ,  Hyeyun CHA

发明人： Jens Paulsen ,  Hong-Kyu Park ,  Sun SHIN ,  Sinyoung PARK ,  Hyeyun CHA

IPC分类号： H01M4/52

CPC分类号： C01G53/50 ,  C01P2006/40 ,  H01M4/505 ,  H01M4/525 ,  Y02E60/122 ,  Y02P70/54

摘要： Provided is a cathode material for a lithium secondary battery, comprising a heat-treated mixture of an oxide powder (a) represented by Formula I and an oxide powder (b) represented by Formula II, wherein a mixing ratio of the oxide powder (a):oxide powder (b) is in a range of 30:70 to 90:10, the oxide powder (a) is monolithic particles having a D50 of more than 10 μm, and the oxide powder (b) is agglomerated particles having a D50 of less than 10 μm, and heat treatment is carried out at a temperature of 400° C. or higher. LiCoO2  (I) LizMO2  (II) wherein 0.95

摘要翻译： 本发明提供一种锂二次电池用正极材料，其特征在于，包含由式I表示的氧化物粉末（a）和式II表示的氧化物粉末（b）的热处理混合物，其中，氧化物粉末（a ）：氧化物粉末（b）的比例范围为30:70〜90:10，氧化物粉末（a）为D50大于10um的整体颗粒，氧化物粉末（b）为具有 D50小于10微米，并且在400℃或更高的温度下进行热处理。 <？in-line-formula description =“In-line Formulas”end =“lead”？> LiCoO 2（I）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？？？？？？？？？？？？（II） ？in-line-formula description =“In-line formula”end =“tail”？>其中0.95

公开(公告)号：US20070298512A1

公开(公告)日：2007-12-27

申请号：US11831516

申请日：2007-07-31

申请人： Hong-Kyu PARK ,  Sun SHIN ,  Sin PARK ,  Ho SHIN ,  Jens PAULSEN

发明人： Hong-Kyu PARK ,  Sun SHIN ,  Sin PARK ,  Ho SHIN ,  Jens PAULSEN

IPC分类号： G01N31/16 ,  H01M4/48

CPC分类号： H01M4/485 ,  C01G45/1228 ,  C01G51/50 ,  C01G53/006 ,  C01G53/50 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2004/84 ,  C01P2006/10 ,  C01P2006/37 ,  C01P2006/40 ,  C01P2006/80 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T436/15

摘要： Provided is a cathode active material containing a Ni-based lithium mixed transition metal oxide. More specifically, the cathode active material comprises the lithium mixed transition metal oxide having a composition represented by Formula I of LixMyO2 wherein M, x and y are as defined in the specification, which is prepared by a solid-state reaction of Li2CO3 with a mixed transition metal precursor under an oxygen-deficient atmosphere, and has a Li2CO3 content of less than 0.07% by weight of the cathode active material as determined by pH titration. The cathode active material in accordance with the present invention and substantially free of water-soluble bases such as lithium carbonates and lithium sulfates and therefore has excellent high-temperature and storage stabilities and a stable crystal structure. A secondary battery comprising such a cathode active material exhibits a high capacity and excellent characteristics, and can be produced by an environmentally friendly method with low production costs and high production efficiency.

摘要翻译： 提供含有Ni基锂混合过渡金属氧化物的正极活性物质。 更具体地说，阴极活性材料包括具有由式1表示的组成的锂混合过渡金属氧化物，其中Li 2 O 2 O 2 O 2其中 M，x和y如本说明书中所定义，其通过Li 2 N 3 CO 3与混合的过渡金属前体的固相反应在氧 - 并且具有通过pH滴定测定的小于0.07重量％的正极活性物质的Li 2 N 3 CO 3 3含量。 根据本发明的阴极活性材料，基本上不含碳酸锂和硫酸锂等水溶性碱，因此具有优异的高温保存稳定性和稳定的晶体结构。 包含这种正极活性物质的二次电池显示出高容量和优异的特性，并且可以通过环保的方法生产，生产成本低，生产效率高。