| Recently, graphene has specific physical properties and many advantages inelectrochemical, including electron transport-Massless Dirac Fermion behavior,Anomalous quantum Hall effect (chiral, RT), minimum quantum conductivity,excellent conductive properties, etc; has attracted lots of interest from bothfundamental and applied field. The methods of producing graphene includedmicromechanical cleavage method, intercalation method, reducing ofoxide—graphene and chemical deposition method.The graphene was synthesized by the three methods: the graphene was producedby the reduction of oxided-graphene. The properties of the graphene were studied byFT-IR, XRD, XPS, Hr-TEM, CV test, EIS and galvannostatic charge/discharge;Graphite Oxide were first reduce by LiAlH4can remove most of oxygen groups, andthen the oxygen groups can be further more removed after it was reacted with PBr3,and the graphene was got. The graphene was studied systematically by FTIR,HR-TEM, galvannostatic charge/discharge. At the current density of100mAh·g-1, thefirst discharge specific capacitance was1029.4mAh·g-1, the first charge specificcapacitance was855.1mAh·g-1, and it was easy to synthesis and operation; in thispaper, the aromatic halogenated hydrocarbons (AHH) were used to prepare graphene.The properties of the graphene were studied by FT-IR, Raman and HR-TEM to proveit was possible to get graphene from AHH.In recent years, lithium-ion battery research has made rapid progress because ofits cellent properties, it has many advantages including as laptop computers cellularphone and digital cameras due to its high-energy density, has been widely used inhome appliances. The Li-S secondary battery has the highest theoretical specificcapacity, now was one of the research hot point. The sulfur has low price, wasfriendly to environment, in this paper four methods were used refluence,high-pressure, and vapor deposition diffusion and ball milling to compound thegraphene/S as the anode material of lithium sulfur battery. |
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