The Preparation,Token And Test Of Its Electrochemical Properties Of Two Li～+ Type Solid-State Electrolytes

Solid-state lithium-ion battery is a novel secondary rechargeable system generating on the basis of liquid lithium-ion battery. Solid-state electrolytes not only have the excellent performance of liquid lithium batteries, but also can resolve the possible problems of leakage and blast owing to no free liquid electrolyte in Solid-state lithium-ion battery. It is also very convenient to design the batteries shape. Solid-state electrolytes are of great significance in solid-state electrochemistry and one of their most important applications is in high energy density batteries and secondary lithium cells. The main results of this paper are summarized as follows:1. A series of lithium phosphatoantimonate were synthesized, also explained by XRD pattern, FTIR. Compounds were found high electric conductivity and low activity energy.2. We report the intercalation of poly(ethylene oxide) (PEO) into LiV₃O₈ to produce a novel intercalated solid polymer electrolyte by using a hydrothermal method in one step. The two different components are combined on the nano-scale. The structure and conformation of the intercalated PEO molecules are investigated in detail. The conductivity and EIS of the obtained nanocomposite are also studied and the relationship between the conformation of the interlayered PEO molecules and their electrochemical properties is discussed. The nanocomposite PEO-LiV₃O₈ showed a higher ionic conductivity than the host material LiV₃O₈ and could be used as a potential solid-state polymer electrolyte.