Lithium ion secondary battery

摘要

The invention provides a lithium ion secondary battery with high capacity and excellent current characteristics. The lithium battery of this invention mainly comprises a positive electrode, a negative electrode and an electrolyte; negative electrode contains ceramics particles such as Al2O3 not responsible for charging and discharging reaction of the battery. The presence of the ceramics particles in the negative electrode leads to a decrease in the internal resistance of the battery because of the enhancement of ion conductivity in the negative electrode, resulting in higher capacity at high rate discharge of the lithium ion secondary battery.