New material extended lithium-ion battery applications
The Dell Inspiron E1705 Battery problem of shortage of resources for the Cobalt, you can replace the lithium cobalt nickel manganese cobalt cathode material for lithium also successfully researched. HUANG Xue-Jie said: “This material is a layered oxide cathode material, in the early 1980s Jipi the discovery, synthesis difficulty is much higher than lithium cobalt oxide, crystal type control is particularly difficult, has not been applied, we have developed a unique precursor lithium synthesis and processing technology, 80% of the cobalt has been replaced by manganese and nickel, and to achieve the control of grain size, synthetic materials, a reversible capacity of 165mAh / g, higher than that of lithium cobalt oxide 10%, cycle life to 500 times. ”
In addition, the project team has also developed a Dell Latitude D510 Battery proprietary aluminum oxide surface modification technology for modification into the spinel lithium manganese oxide materials, to produce reversible capacity of 107mAh / g, 55C cycle 200 times the capacity retention greater than 90%, better than similar products in the international level, is the first hybrid battery can be used for a high-power lithium-ion battery materials, protects the major projects of high-power electric vehicles, lithium-ion battery the smooth progress of the project. Huang Xue-Jie said: “In 2004, Beijing Xingheng this material-based high-power hybrid cars with lithium-ion batteries fully passed the 863 major projects planned electric car testing the unity of the organization, the power to reach 1200W / kg, safety, cycle, high – low temperature performance and other tests all pass, this year is expected to reach 1800W / kg and through UL certification testing. In addition, Star Constant 10Ah high-energy type and 7.5Ah high-power lithium-ion battery, through the United States UL safety test, becoming the first Chinese mainland through UL-certified Li-ion power Dell Latitude D610 Battery, battery-enter the international market for this kind of paved the way. ”
Lithium-ion battery anode material is lithium-storage function, to assume a key material, the importance should not be ignored. Huang Xue-Jie description: “The current commodity lithium-ion dell latitude d600 battery used in the graphite anode materials were reversible capacity of 300-340mAh / g. In this regard, we have developed a nano-hole hard carbon balls, Lantern structural composite anode materials, the current reversible capacity of composite anode materials has already reached 600mAh / g. At the same time developed a graphite nanofiber conductive additive, can increase the power density of high-power batteries. ”
He told reporters that only the positive and negative material embodies the application of domestic invention patent 21, four of which are authorized and have been two international invention patents.
Huang Xue-Jie said in conclusion: “China’s lithium-ion battery industry has developed very rapidly, has now become the world’s second largest producer of lithium-ion battery, second only to Japan. Will we have to do is the development of large lithium-ion battery, new materials, in reducing the the cost, we must also make dell latitude d610 battery safer, live longer. “