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    Very Long Cycling of Lithium Ion Batteries with Lithium Rich Cathode Materials
    7.
    发明申请
    Very Long Cycling of Lithium Ion Batteries with Lithium Rich Cathode Materials 有权
    锂离子电池与锂离子电池极长循环

    公开(公告)号：US20120056590A1

    公开(公告)日：2012-03-08

    申请号：US13213756

    申请日：2011-08-19

    申请人： Shabab Amiruddin ,  Bing Li ,  Sujeet Kumar

    发明人： Shabab Amiruddin ,  Bing Li ,  Sujeet Kumar

    IPC分类号： H02J7/00 ,  H01M10/44 ,  H01M10/0525

    CPC分类号： H01M10/0525 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0567 ,  H01M10/44 ,  Y02E60/122 ,  Y02T10/7011

    摘要： Lithium ion batteries can be activated and then cycled to exploit a moderate fraction of the discharge cycling capacity such that the discharge capacity and average discharge voltage stay within initial values for thousands of cycles. The superior cycling performance has been achieved at relatively high discharge rates and for practical battery formats. Lithium ion battery performance can also be achieved with superior cycling performance with partially activated batteries such that good discharge capacities can be exploited for many thousands of cycles before the discharge capacity and average discharge voltage drops more than 20% from initial values. The positive electrode active material can be a lithium rich metal oxide. The activation of the battery can comprise phase changes of the active materials. As described herein, the phase changes can be manipulated to exploit a reasonable fraction of the available high capacity of the material while providing outstanding cycling stability.

    摘要翻译： 锂离子电池可以被激活，然后循环以利用放电循环能力的中等部分，使得放电容量和平均放电电压保持在数千个周期的初始值内。 在相对较高的放电率和实际的电池格式下，已经实现了优越的循环性能。 锂离子电池的性能也可以通过部分活化的电池实现优异的循环性能，从而在放电容量和平均放电电压从初始值下降超过20％之前可以利用良好的放电容量达数千个循环。 正极活性物质可以是富锂金属氧化物。 电池的激活可以包括活性材料的相变。 如本文所述，可以操纵相位变化以利用材料的可用高容量的合理分数，同时提供优异的循环稳定性。

    Very long cycling of lithium ion batteries with lithium rich cathode materials
    8.
    发明授权
    Very long cycling of lithium ion batteries with lithium rich cathode materials 有权
    锂离子电池与锂富锂阴极材料循环很长

    公开(公告)号：US08928286B2

    公开(公告)日：2015-01-06

    申请号：US13213756

    申请日：2011-08-19

    申请人： Shabab Amiruddin ,  Bing Li ,  Sujeet Kumar

    发明人： Shabab Amiruddin ,  Bing Li ,  Sujeet Kumar

    IPC分类号： H01M10/44 ,  H01M10/46 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  H01M10/0567

    CPC分类号： H01M10/0525 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0567 ,  H01M10/44 ,  Y02E60/122 ,  Y02T10/7011

    摘要： Lithium ion batteries can be activated and then cycled to exploit a moderate fraction of the discharge cycling capacity such that the discharge capacity and average discharge voltage stay within initial values for thousands of cycles. The superior cycling performance has been achieved at relatively high discharge rates and for practical battery formats. Lithium ion battery performance can also be achieved with superior cycling performance with partially activated batteries such that good discharge capacities can be exploited for many thousands of cycles before the discharge capacity and average discharge voltage drops more than 20% from initial values. The positive electrode active material can be a lithium rich metal oxide. The activation of the battery can comprise phase changes of the active materials. As described herein, the phase changes can be manipulated to exploit a reasonable fraction of the available high capacity of the material while providing outstanding cycling stability.

    摘要翻译： 锂离子电池可以被激活，然后循环以利用放电循环能力的中等部分，使得放电容量和平均放电电压保持在数千个周期的初始值内。 在相对较高的放电率和实际的电池格式下，已经实现了优越的循环性能。 锂离子电池的性能也可以通过部分活化的电池实现优异的循环性能，从而在放电容量和平均放电电压从初始值下降超过20％之前可以利用良好的放电容量达数千个循环。 正极活性物质可以是富锂金属氧化物。 电池的激活可以包括活性材料的相变。 如本文所述，可以操纵相位变化以利用材料的可用高容量的合理分数，同时提供优异的循环稳定性。

    Low Temperature Electrolyte for High Capacity Lithium Based Batteries
    9.
    发明申请
    Low Temperature Electrolyte for High Capacity Lithium Based Batteries 审中-公开
    低容量锂电池低温电解液

    公开(公告)号：US20130157147A1

    公开(公告)日：2013-06-20

    申请号：US13325367

    申请日：2011-12-14

    申请人： Bing Li ,  Shabab Amiruddin

    发明人： Bing Li ,  Shabab Amiruddin

    IPC分类号： H01M10/056

    CPC分类号： H01M10/0569 ,  H01M4/131 ,  H01M4/133 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2300/0034 ,  H01M2300/004 ,  Y02E60/122 ,  Y02T10/7011

    摘要： Electrolytes for lithium based batteries are described with good temperature tolerance over appropriate temperature ranges for uses in vehicles. In particular, the electrolytes are suitable for high voltage operation over 4.4V and can provide high rate performance. The electrolytes generally comprise a solvent that is a mixture of ethylene carbonate, dimethyl carbonate and ethylmethyl carbonate. Alternatively, a solvent combination of fluoroethylene carbonate and dimethyl carbonate was used. A primary lithium salt is includes at a concentration greater than about 1.05M. The electrolyte generally also comprises a lithium salt additive. The electrolytes can provide some battery capacity down to at least −40° C. while providing good performance also at elevated temperatures of 45° or more, and the corresponding batteries can be cycled to several thousand cycles.

    摘要翻译： 描述了锂基电池的电解质在适用于车辆的温度范围内具有良好的耐温性。 特别地，电解质适用于4.4V以上的高电压工作，并可提供高速率性能。 电解质通常包含作为碳酸亚乙酯，碳酸二甲酯和碳酸甲乙酯的混合物的溶剂。 或者，使用氟代碳酸亚乙酯和碳酸二甲酯的溶剂组合。 初级锂盐的浓度大于约1.0MM。 电解质通常还包含锂盐添加剂。 电解质可以提供至少-40℃的一些电池容量，同时在45°或更高的升高的温度下也提供良好的性能，并且相应的电池可以循环到数千次循环。

    High capacity lithium ion battery formation protocol and corresponding batteries
    10.
    发明授权
    High capacity lithium ion battery formation protocol and corresponding batteries 有权
    高容量锂离子电池组成方案和相应的电池

    公开(公告)号：US09159990B2

    公开(公告)日：2015-10-13

    申请号：US13588162

    申请日：2012-08-17

    申请人： Shabab Amiruddin ,  Bing Li

    发明人： Shabab Amiruddin ,  Bing Li

    IPC分类号： H01M10/44 ,  H01M10/46 ,  H01M4/131 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/056

    CPC分类号： H01M4/0447 ,  H01M4/131 ,  H01M4/362 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/056 ,  H01M10/44 ,  Y02E60/122

    摘要： Battery formation protocols are used to perform initial charging of batteries with lithium rich high capacity positive electrode to result a more stable battery structure. The formation protocol generally comprises three steps, an initial charge step, a rest period under an open circuit and a subsequent charge step to a selected partial activation voltage. The subsequent or second charge voltage is selected to provide for a desired degree of partial activation of the positive electrode active material to achieve a desired specific capacity while providing for excellent stability with cycling. The formation protocol is particularly effective to stabilize cycling for compositions with moderate lithium enrichment.

    摘要翻译： 电池形成方案用于对具有富锂高容量正电极的电池进行初始充电，以产生更稳定的电池结构。 形成方案通常包括三个步骤，初始充电步骤，在开路下的休止时间和对所选择的部分激活电压的后续充电步骤。 选择随后或第二充电电压以提供正极活性材料的期望程度的部分活化以实现期望的比容量，同时在循环时提供优异的稳定性。 形成方案对于具有中等锂浓度的组合物的稳定循环特别有效。