Effect of cathode composition on impedance rise in high-power lithium-ion cells: Long-term aging results
Effect of cathode composition on impedance rise in high-power lithium-ion cells: Long-term aging results
复制标题
阴极成分对高功率锂离子电池阻抗上升的影响：长期老化结果
DOI：
10.1016/j.jpowsour.2005.05.008
复制
发表时间：
2006
影响因子：
9.2
通讯作者：
J. Christophersen
中科院分区：
文献类型：
--
作者：
I. Bloom;B. G. Potter;Christopher S. Johnson;K. Gering;J. Christophersen
锂离子电池的延长的循环寿命和电池寿命测试已经示出了阴极中的铝浓度对电池的面积比阻抗与时间行为的影响。在具有LiNi0.8Co0.15Al0.05O2（5%Al）阴极的电池中，从t1/2到t的机理变化发生在约35周。将铝浓度增加到10%（LiNi0.8Co0.1Al0.1O2）将变化延迟了大约另外30周。在曲线的抛物线和线性部分期间影响增加速率的因素取决于阴极组成和颗粒尺寸。机理变化所需时间的差异与阴极组成有关。
Extended cycle- and calendar-life testing of lithium-ion cells has shown the effect of aluminum concentration in the cathode on the area-specific impedance versus time behavior of the cell. In cells with a LiNi0.8Co0.15Al0.05O2(5% Al) cathode, the change in mechanism from t1/2to t occurred at about 35 weeks. Increasing the aluminum concentration to 10% (LiNi0.8Co0.1Al0.1O2) delayed the change for, approximately, an additional 30 weeks. The factors affecting the rate of increase during the parabolic and linear portions of the curve depended on cathode composition and particle size. The difference in the time it took for the change in mechanism was related to the cathode composition.