非显而易见杯

专利无效挑战赛

目标专利:1776具有增强的能量密度特性的高能量密度锂二次电池

专利公开号:CN103548188B

专利权人:LG

无效请求书提交日期:2026年


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权利要求列表点击可跳转

序号 权利要求内容

1

一种高能量密度锂二次电池,包含正极;所述正极包含由下式(1)表示并具有层状结构的第一正极活性材料和由下式(2)表示并具有尖晶石结构的第二正极活性材料作为正极活性材料;其中所述第一正极活性材料相对于容量具有0.03μm·g/mAh~0.1μm·g/mAh的平均粒径;以及所述第二正极活性材料相对于容量具有0.1μm·g/mAh~0.2μm·g/mAh的平均粒径;其中基于所述第一正极活性材料和第二正极活性材料的总重量,所述第一正极活性材料的量为40重量%~100重量%;负极;所述负极包含相对于容量具有0.005m2/mAh~0.013m2/mAh的比表面积的结晶性石墨作为负极活性材料;以及隔膜;其中所述结晶性石墨为选自如下石墨中的一种石墨或它们的混合物:相对于容量具有0.007m2/mAh~0.011m2/mAh的比表面积的第一种石墨,以及相对于容量具有0.007m2/mAh~0.010m2/mAh的比表面积的第二种石墨;Lix(NivMnwCoyMz)O2-tAt (1);其中0.8<x≤1.3,0≤v≤0.9,0≤w≤0.9,0≤y≤0.9,0≤z≤0.9,x+v+w+y+z=2,且0≤t<0.2;M是指具有+2~+4氧化数的至少一种金属 of 阳离子;且A为单价或二价阴离子;LiaMn2-bM'bO4 (2);其中0.8<a≤1.3,0≤b≤0.5;M'是指具有+2~+4氧化数的至少一种金属的阳离子。

2

如权利要求1所述的高能量密度锂二次电池,其中所述第一种石墨在1.4g/cc~1.6g/cc的粉末密度下具有100S/cm以上且小于1000S/cm的粉末电导率。

3

如权利要求2所述的高能量密度锂二次电池,其中所述第一种石墨为表面改性的石墨;并基于XRD数据在2θ=43°下具有可识别为(101)面的菱形峰的3R和2H峰。

4

如权利要求1所述的高能量密度锂二次电池,其中所述第二种石墨在1.4g/cc~1.6g/cc的粉末密度下具有10S/cm以上且小于200S/cm的粉末电导率。

5

如权利要求4所述的高能量密度锂二次电池,其中所述第二种石墨基于XRD数据在2θ=43°下具有作为(101)面的菱形峰的2H峰。

6

如权利要求1所述的高能量密度锂二次电池,其中所述第一正极活性材料在2.65g/cc~2.85g/cc的粉末密度下具有1×10-3S/cm以上且小于10×10-3S/cm的粉末电导率。

7

如权利要求1所述的高能量密度锂二次电池,其中所述第二正极活性材料在2.65g/cc~2.85g/cc的粉末密度下具有1×10-5S/cm以上且小于10×10-5S/cm的粉末电导率。

8

如权利要求1所述的高能量密度锂二次电池,其中在式(1)中,M为选自Al、Mg和Ti中的至少一种元素;在式(2)中,M'为选自Co、Mn、Ni、Al、Mg和Ti中的至少一种元素。

9

如权利要求1所述的高能量密度锂二次电池,其中在式(1)和(2)中,A和A'各自独立地为选自卤素、S和N中的至少一种元素。

10

如权利要求1所述的高能量密度锂二次电池,其中所述锂二次电池相对于体积具有0.05Ah/cm3~0.09Ah/cm3的容量;且相对于体积具有0.2Wh/cm3~0.4Wh/cm3的能量。

11

如权利要求1所述的高能量密度锂二次电池,其中所述隔膜为有机-无机复合隔膜。


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权利要求1

一种高能量密度锂二次电池,包含正极;所述正极包含由下式(1)表示并具有层状结构的第一正极活性材料和由下式(2)表示并具有尖晶石结构的第二正极活性材料作为正极活性材料;其中所述第一正极活性材料相对于容量具有0.03μm·g/mAh~0.1μm·g/mAh的平均粒径;以及所述第二正极活性材料相对于容量具有0.1μm·g/mAh~0.2μm·g/mAh的平均粒径;其中基于所述第一正极活性材料和第二正极活性材料的总重量,所述第一正极活性材料的量为40重量%~100重量%;负极;所述负极包含相对于容量具有0.005m2/mAh~0.013m2/mAh的比表面积的结晶性石墨作为负极活性材料;以及隔膜;其中所述结晶性石墨为选自如下石墨中的一种石墨或它们的混合物:相对于容量具有0.007m2/mAh~0.011m2/mAh的比表面积的第一种石墨,以及相对于容量具有0.007m2/mAh~0.010m2/mAh的比表面积的第二种石墨;Lix(NivMnwCoyMz)O2-tAt (1);其中0.8<x≤1.3,0≤v≤0.9,0≤w≤0.9,0≤y≤0.9,0≤z≤0.9,x+v+w+y+z=2,且0≤t<0.2;M是指具有+2~+4氧化数的至少一种金属 of 阳离子;且A为单价或二价阴离子;LiaMn2-bM'bO4 (2);其中0.8<a≤1.3,0≤b≤0.5;M'是指具有+2~+4氧化数的至少一种金属的阳离子。


权利要求2

如权利要求1所述的高能量密度锂二次电池,其中所述第一种石墨在1.4g/cc~1.6g/cc的粉末密度下具有100S/cm以上且小于1000S/cm的粉末电导率。


权利要求3

如权利要求2所述的高能量密度锂二次电池,其中所述第一种石墨为表面改性的石墨;并基于XRD数据在2θ=43°下具有可识别为(101)面的菱形峰的3R和2H峰。


权利要求4

如权利要求1所述的高能量密度锂二次电池,其中所述第二种石墨在1.4g/cc~1.6g/cc的粉末密度下具有10S/cm以上且小于200S/cm的粉末电导率。


权利要求5

如权利要求4所述的高能量密度锂二次电池,其中所述第二种石墨基于XRD数据在2θ=43°下具有作为(101)面的菱形峰的2H峰。


权利要求6

如权利要求1所述的高能量密度锂二次电池,其中所述第一正极活性材料在2.65g/cc~2.85g/cc的粉末密度下具有1×10-3S/cm以上且小于10×10-3S/cm的粉末电导率。


权利要求7

如权利要求1所述的高能量密度锂二次电池,其中所述第二正极活性材料在2.65g/cc~2.85g/cc的粉末密度下具有1×10-5S/cm以上且小于10×10-5S/cm的粉末电导率。


权利要求8

如权利要求1所述的高能量密度锂二次电池,其中在式(1)中,M为选自Al、Mg和Ti中的至少一种元素;在式(2)中,M'为选自Co、Mn、Ni、Al、Mg和Ti中的至少一种元素。


权利要求9

如权利要求1所述的高能量密度锂二次电池,其中在式(1)和(2)中,A和A'各自独立地为选自卤素、S和N中的至少一种元素。


权利要求10

如权利要求1所述的高能量密度锂二次电池,其中所述锂二次电池相对于体积具有0.05Ah/cm3~0.09Ah/cm3的容量;且相对于体积具有0.2Wh/cm3~0.4Wh/cm3的能量。


权利要求11

如权利要求1所述的高能量密度锂二次电池,其中所述隔膜为有机-无机复合隔膜。


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