Application of LiCoO2 in Lithium Cobalt Oxide Battery
LiCoO2 is the first commercialized lithium-ion battery cathode material used, because of its easy synthesis, high-voltage platform, specific energy is moderate, and good cycling performance, is still the mainstream of lithium-ion battery cathode material. However, the inherent characteristics of its structure, the actual capacity to theoretical capacity of only half full security risk existed. While its cycling performance, especially when the discharge voltage loop stability remains of concern to many researchers.
Ti-doped lithium cobalt oxide cathode materials on the performance improvement
(1) the electrochemical properties of LiCoO2 surface doped TiO2 relatively stable, the reduced activity of LiCoO2 surface oxygen, reducing the contact area with the electrolyte, inhibit the LiCoO2 in the Co dissolution in the electrolyte, increasing the battery stability;
(2) A small amount of lithium cobalt oxide at the surface there is likely to loose shape, reducing stress and cycle between particles caused by the process of the structure and size of small strain, increasing the stability of the battery.
(3) Titanium oxide doped LiCoO2 reduced charge and discharge process in the polarization, and the material has a higher discharge voltage and discharge more stable results.
(4) Inhibit the LiCoO2 doped titanium dioxide discharge cycle in the process of electrochemical impedance, is advantageous to reduce the battery’s capacity fading, improve high-temperature cycling performance, improve the electrochemical performance of the battery.
The company’s products have been widely used titanium dioxide lithium cobalt oxide materials. Adding nano titanium dioxide, the initial reversible capacity and cycling performance of high temperature significantly increased the discharge platform is better than not added. In addition, the amount of nano titanium dioxide, can increase the battery charge and discharge process at a number of electrochemical stability and thermal stability, so that the battery in the course of more stable and more durable. Long-term use by the user, the product of high stability, application results are obvious.