Tips of Lithium Iron Battery

The cathode that lithium iron(li-ion) phosphate (LiFePO4) battery charge level which high thermal stability, oxidation of electrolyte is low, are used more battery certainly to do. LiFePO4 theoretical capacity of 170 mAh / g, compared to lithium iron battery voltage 3.5 v, of the materials, the actual reversible capacity of 160 mAh / g . Have in comparison with other materials, low electrical conductivity at room temperature to lithium-ion chemical diffusion coefficient in LiFePO4 far lower than with other cathode materials, to reduce the material the defect sparse bring process for the coating of conductive substances to improve performance and to achieve application, cell is too large and more than the amount of electrolytes. The current focus is to develop the development of new lithium iron phosphate synthesis and modification of materials, to improve the overall performance of lithium-iron phosphate.

The first synthesis of lithium iron phosphate way JB Goodenough solid state reaction. The method is simple, easy to use, is the cycle of disadvantage the synthesis of longer, more difficult, the stability of the product batch control. As the process to prevent the heat treatment and powder processing the oxidation of bivalent iron of synthetic critical control points. There is a lot of R & D team developed thermal reduction carbon method, Copräzipitation, hydrothermal vents, spray pyrolysis method.

The international production of lithium iron phosphate can A123, Valence, Phostech so the company. Lithium iron phosphate with a current industrial development of many companies. According to the Internet poll 80% of domestic well known cathode materials for li-ion battery suppliers of external claims that its lithium iron phosphate related products during the development and production. And "international professional players", however, the research and to put development efforts and time in perspective, still in its infancy.

Compared to other lithium battery material is still very young lithium iron phosphate. Some people say that the battery in electric tools used, is said, used a battery electric bus, is the initial development.

Japan in the field of lithium-ion battery monopoly, Sony, SANYO Electric, ACER Notebook battery such as ACER BTP-APJ1 battery,ACER BTP-42C1 battery,ACER BTP-63D1 battery,ACER LIP-4084QUPC battery,ACER LIP6220QUPC SY6 battery,, NEC and other well known companies have built lithium ion battery on a large scale production, and most manufacturers in addition to the conservation and its own advantages of lithium-ion battery of the new products are expanding existing production of foreign brands to develop. Japan's new sunshine program began in in 1992, the lithium ion battery car development program, r & D funds more than $1000000000, access to technology and technological breakthroughs. Toyota has part started the mass production of automotive lithium ion battery, a small car "Vitz" for recording in February 2003 of the model, the stability has withstood the test of the market. Hitachi, NEC, Mitsubishi and other companies mass produce lithium-ion batteries in electric vehicles and hybrid vehicles used are introduced Fuji heavy industries the design for the Tokyo electric power lithium manganese oxide as cathode material used for lithium ion Dell Studio XPS 13 battery electric vehicle "R1e", fast charge mode, 15 minutes full 80%, 1 charge approx. 80 km run. Top speed of 100 km / h. Tokyo electric power in the year 2006 and then in 30 R1e. Furthermore, since 2007 a total import of about 3000. Overall, Japan of the leading battery technology, remains his power and his most important materials, battery production technology matured, the performance has reached almost demand electric vehicles.