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    • 2. 发明申请
    • VERY LONG CYCLING OF LITHIUM ION BATTERIES WITH LITHIUM RICH CATHODE MATERIALS
    • 锂离子电池非常长的循环使用锂富锂阴极材料
    • WO2012030639A2
    • 2012-03-08
    • PCT/US2011049304
    • 2011-08-26
    • ENVIA SYSTEMS INCAMIRUDDIN SHABABLI BINGKUMAR SUJEET
    • AMIRUDDIN SHABABLI BINGKUMAR SUJEET
    • H01M10/0525H01M4/505H01M4/525H01M4/583H01M10/0567
    • H01M10/0525H01M4/366H01M4/505H01M4/525H01M10/0567H01M10/44Y02E60/122Y02T10/7011
    • 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.
    • 可以激活锂离子电池,然后循环以利用放电循环容量的中等比例,使得放电容量和平均放电电压保持在初始值内数千个循环。 在相对较高的放电速率和实用电池形式下,循环性能出众。 锂离子电池的性能也可以通过部分激活的电池具有优异的循环性能来实现,使得在放电容量和平均放电电压从初始值下降超过20%之前,良好的放电容量可以被利用数千次循环。 正极活性材料可以是富含锂的金属氧化物。 电池的激活可以包括活性材料的相变。 如本文所述,可以操纵相变以利用材料的可用高容量的合理部分,同时提供优异的循环稳定性。