Lithium phosphate iron and lithium battery principle.Column rechargeable battery

　　Since 1996, Japan's NTT revealed the lithium battery positive material of AYMPO4 (A is alkaline metal, M is a combination of co -FE: LIFECOPO4). Professor John. B. Goodnough and other research teams, then also reported the characteristics of lifpo4's reversible land to remove lithium. Pay attention to and cause extensive research and rapid development. Compared with the traditional lithium -ion battery positive material, the Limn2O4 of the spinel structure, and the LICOO2 of the layered structure, Limpo4's raw materials are more widely sources, cheaper and no environmental pollution.

　　The lithium battery positive material of the LFP olive structure has already launched mass production in upstream professional material factories. It is expected that the application field of lithium batteries will be completely expanded to expand the lithium battery to electric bicycles, hybrid oils and electric vehicles, electric vehicles New realm; a research team led by Professor Yamada Junfu, which is published on August 11, 2008, reported by Professor Yamada.Iron battery will be used as a power device for cleaning and environmentally friendly electric vehicles, and its prospects are generally optimistic. Joint researchers at Tokyo University of Technology and Northeast University, led by Professor Yamada, use neutrons to illuminate iron phosphate, and then analyze the interaction between neutron and material to study the movement of lithium ion in iron phosphate. The researcher's conclusion is that in lithium iron, lithium ions spread directly according to a certain direction pen, which is different from the movement of lithium ions in existing electrode materials such as cobalt. Such a conclusion is completely consistent with the theoretical of the original estimate. The result of the use of neutron diffraction analysis even confirms that lithium iron phosphate (LFP) can ensure the security of large current output input input in lithium batteries.

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