The battery materials and manufacture technologies have developed quickly since the birth of lithium ion battery in 1990.The study of battery materials supports the increase and improvement of lithium ion battery performance.The improvements of battery rate performance,high-low temperature performance,safety performance and cyclic performance make lithium ion battery application to be true in cell phone,notebook compute,audio product,power tool,backup power source and automobile power.The market requirement for lithium ion battery is increasing in the future 10 years along with the extending of application field,and the lithium ion battery is possible to be applied in more other fields.