公开(公告)号：US20070292761A1

公开(公告)日：2007-12-20

申请号：US11831530

申请日：2007-07-31

申请人： Hong-Kyu PARK ,  Sun sik SHIN ,  Sin young PARK ,  Ho suk SHIN ,  Jens M. PAULSEN

发明人： Hong-Kyu PARK ,  Sun sik SHIN ,  Sin young PARK ,  Ho suk SHIN ,  Jens M. PAULSEN

IPC分类号： H01M4/40 ,  C22C24/00 ,  H01M4/50 ,  H01M4/52

CPC分类号： H01M4/131 ,  C01G45/1228 ,  C01G51/50 ,  C01G53/50 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2004/84 ,  C01P2006/10 ,  C01P2006/37 ,  C01P2006/40 ,  C01P2006/80 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M2004/028 ,  Y02E60/122 ,  Y02P70/54

摘要： Provided is a lithium mixed transition metal oxide having a composition represented by Formula I of LixMyO2 (M, x and y are as defined in the specification) having mixed transition metal oxide layers (“MO layers”) comprising Ni ions and lithium ions, wherein lithium ions intercalate into and deintercalate from the MO layers and a portion of MO layer-derived Ni ions are inserted into intercalation/deintercalation layers of lithium ions (“reversible lithium layers”) thereby resulting in the interconnection between the MO layers. The lithium mixed transition metal oxide of the present invention has a stable layered structure and therefore exhibits improved stability of the crystal structure upon charge/discharge. In addition, a battery comprising such a cathode active material can exhibit a high capacity and a high cycle stability. Further, such a lithium mixed transition metal oxide is substantially free of water-soluble bases, and thereby can provide excellent storage stability, decreased gas evolution and consequently superior high-temperature stability with the feasibility of low-cost mass production.

摘要翻译： 本发明提供具有由式（I）表示的组成的锂混合过渡金属氧化物（M，x和y分别为 包括Ni离子和锂离子的混合的过渡金属氧化物层（“MO层”），其中锂离子插入和脱离MO层和部分MO层衍生的Ni离子插入到插层中 /脱嵌层锂离子（“可逆锂层”），从而导致MO层之间的互连。 本发明的锂混合过渡金属氧化物具有稳定的层状结构，因此在充放电时显示出晶体结构的稳定性提高。 此外，包含这种阴极活性材料的电池可以表现出高容量和高循环稳定性。 此外，这种锂混合过渡金属氧化物基本上不含水溶性碱，从而可以提供优异的储存稳定性，降低的气体逸出性以及因此优异的高温稳定性以及低成本批量生产的可行性。

公开(公告)号：US20080032196A1

公开(公告)日：2008-02-07

申请号：US11831522

申请日：2007-07-31

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

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

IPC分类号： H01M4/02

CPC分类号： C01G53/50 ,  C01D15/02 ,  C01G45/1228 ,  C01G51/50 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2004/84 ,  C01P2006/11 ,  C01P2006/37 ,  C01P2006/40 ,  C01P2006/80 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

摘要： Provided is a method for preparing a lithium mixed transition metal oxide, comprising subjecting Li2CO3 and a mixed transition metal precursor to a solid-state reaction under an oxygen-deficient atmosphere with an oxygen concentration of 10 to 50% to thereby prepare a powdered 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. Therefore, since the high-Ni lithium mixed transition metal oxide having a given composition can be prepared by a simple solid-state reaction in air, using a raw material that is cheap and easy to handle, the present invention enables industrial-scale production of the lithium mixed transition metal oxide with significantly decreased production costs and high production efficiency. Further, the thus-produced lithium mixed transition metal oxide is substantially free of impurities, and therefore can exert a high capacity and excellent cycle stability, in conjunction with significantly improved storage stability and high-temperature stability.

摘要翻译： 本发明提供一种锂复合过渡金属氧化物的制备方法，其特征在于，在氧缺乏的条件下，使Li 2 N 3 CO 3和混合过渡金属前体进行固相反应 氧气浓度为10〜50％的气氛，由此制备具有由式1表示的组成的粉末状锂混合过渡金属氧化物，其具有如下结构：Li＆ 2其中M，x和y如说明书中所定义。 因此，由于具有给定组成的高Ni锂混合过渡金属氧化物可以通过在空气中简单的固态反应来制备，使用廉价且易于处理的原料，本发明使得能够工业规模生产 锂混合过渡金属氧化物的生产成本显着降低，生产效率高。 此外，这样制造的锂混合过渡金属氧化物基本上不含杂质，因此可以发挥高容量和优异的循环稳定性，同时显着提高储存稳定性和高温稳定性。