Of Liv <sub> 3 </ Sub> The O <sub> 8 </ Sub> Preparation Of Cathode Materials And Their Modification Research

lithium-ion battery has the merits of high specific capacity, long cycling life,high voltage and safe and free from pollution etc. caused the research interest by many researchers. lithium-ion battery is mainly made up of cathode, anode and electrolyte. Comparing with the development of anode material, the development of cathode material is slow. Most research now is on the cathode materials Li-Co-O, Li-Ni-O, Li-Mn-O and Li-V-O.Layered cathode material LiV₃O₈ has the merits of high specific capacity, long cycling life and low price, making it one of the most promising candidates for the next generation cathode material of lithium ion battery. But its electrochemical performance of LiV₃O₈ remarkably depends on synthesis methods. For this, lithium vanadium oxide LiV₃O₈ was made by a new solid state reaction of coordination method, and also studied the properties of lithium vanadium oxide LiV₃O₈ through doped HO₂. The connection between electrochemical performance and synthesis conditions studied by the modern experimental techniques, such as XRD, FT-IR, TEM, charge-discharge experiment, etc. The research works of this article include the following aspects:In the first part, the development present condition and its work principles of the lithium ion battery are generalized, the contents of lithium ion battery cathode material, anode material, electrolyte...etc. are systematically overviewed, and the point of development present condition of the cathode material are focused on. From these, the LiV₃O₈ and a new solid state reaction of coordination method are talked to, and the construction and synopsis method of LiV₃O₈ are introduced too.In the second part, the LiV₃O₈ used as the cathode of rechargeable lithium batteries by solid state reaction of coordination method are synthesized, and the optimal parameters 550℃ and 24h are also got. The morphology and radius of results are good through TEM image observation. Not only the discharge-charge properties in the first cycle is better than that prepared by traditional synthesis method, with a...