Material for lithium secondary battery of high performance
    6.
    发明授权
    Material for lithium secondary battery of high performance 有权
    锂二次电池材料性能高

    公开(公告)号:US08450013B2

    公开(公告)日:2013-05-28

    申请号:US12893176

    申请日:2010-09-29

    IPC分类号: C01D1/00

    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Li x Mn 2 O的式I表示的组成的锂混合过渡金属氧化物,其中M,x和y如说明书中所定义,其通过Li 2 CO 3与混合的固态反应 过氧化物金属前体,并且通过pH滴定测定,Li2CO3含量小于正极活性物质的0.07重量%。 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。

    Method of preparing material for lithium secondary battery of high performance
    9.
    发明授权
    Method of preparing material for lithium secondary battery of high performance 有权
    高性能锂二次电池材料的制备方法

    公开(公告)号:US08540961B2

    公开(公告)日:2013-09-24

    申请号:US12914142

    申请日:2010-10-28

    IPC分类号: C01G15/00

    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: 提供一种制备锂混合过渡金属氧化物的方法,包括在氧气浓度为10至50%的氧缺乏气氛下使Li 2 CO 3和混合过渡金属前体进行固态反应,从而制备混合的粉末状锂 具有由式I表示的组合物的过渡金属氧化物,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。

    METHOD OF PREPARING MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE
    10.
    发明申请
    METHOD OF PREPARING MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE 有权
    锂二次电池高性能材料的制备方法

    公开(公告)号:US20110114874A1

    公开(公告)日:2011-05-19

    申请号:US12914142

    申请日:2010-10-28

    IPC分类号: H01M4/525

    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: 提供一种制备锂混合过渡金属氧化物的方法,包括在氧气浓度为10至50%的氧缺乏气氛下使Li 2 CO 3和混合过渡金属前体进行固态反应,从而制备混合的粉末状锂 具有由式I表示的组合物的过渡金属氧化物,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。