石墨烯材料自下而上的微波合成及其电化学性能的研究物理化学专业论文.docxVIP

上海师范大学硕士学位论文 上海师范大学硕士学位论文 Abstract III Abstract YIIIl3Ull0U6III 4115M13118ll Graphene lS two dimensional and one atom layer carbon material that carbon atoms connect with sp2 hybrid form six-carbon atoms ring stretch out in a11 directions in the plane．Due to the specific structure of carbon atom in graphene that endow it many excellent physical and chemical properties，such quantum hall effect，high carrier mobility(15000 cm2／(V·s))，high light transmission(97．7％)，high thermal conductivity(3000-5000W／m／K)，hi曲mechanical strength(the tensile modulus is about l TPa)and the biggest theory specific area(2630 m=／g)．Furthermore，it has good chemical stability in the chemical reaction．Therefore，graphene，as a multi,functional material，has received wide research attention since it was successfully prepared． Currently,the approaches for preparing graphene material include top—down and bottom-up method．For the top-down method，sla-ipping method，oxidation-reduction method and zipping carbon nanotubes method are invoted；for the bottom-up method, chemical vapor deposition method(CVD)，epitaxial growth method and other methods are involed．Each method has the advantages and the disadvantages toward different application fields． Doping can effectively open the zero band gap of pure graphene material． Doping in the graphene includes adsorption doping and lattice doping．The lattice doping methods include CVD method，ball milling method，thermal annealing method， wet chemical method，bottom-up synthesis method,plasma method,photo—chemistry method and arc—discharge method．N，S，B，F，C1，Br,I dopant atoms or co—dopants are usually introduced into the graphene materials． As the world’S energy crisis and environmental pollution is increasingly serious， searching for renewable clean energy，developing high quality and reliable energy storage devices and looking for efficient treatment technology to alleviate the environmental pollution has become the research focus to solve the above mention