石墨烯/钒氧化物纳米复合材料的界面构筑及性能研究

项目名称： 石墨烯/钒氧化物纳米复合材料的界面构筑及性能研究

项目编号： No.51472189

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 一般工业技术

项目作者： 朱泉峣

作者单位： 武汉理工大学

项目金额： 80万元

中文摘要： 纳米复合材料的结构设计与可控制备是材料制备的研究方向，其中纳米界面结构与电子传导、离子传输间的关系是纳米材料领域研究中亟待阐明的关键问题。项目提出通过水热法、溶胶-凝胶法和固相合成法等制备出石墨烯/钒氧化物纳米复合储能材料。研究石墨烯/钒氧化物复合材料的组分与结构设计、纳米结构调控、制备过程与机理及其该复合界面中的电化学机理，特别是石墨烯与钒氧化物界面和电化学性能关系，揭示纳米复合材料中的储锂机制、离子输运与电子传导规律。另外，通过对石墨烯表面进行表面修饰，控制其表面活性位点，可控构筑石墨烯与钒氧化物的界面状态，设计出具有高功率密度和高容量保持率的纳米复合材料。通过本项目的研究，可以丰富石墨烯/钒氧化物复合材料的微观界面调控方法，结合其电化学性能的评价，将进一步揭示纳米复合电极中离子输运机理，为石墨烯/钒氧化物纳米复合储能材料在大功率器件中的应用提供重要的理论和实验依据。

中文关键词： 石墨烯；钒氧化物；可控制备；界面特性

英文摘要： The design and structure controllable preparation of nanocomposites is a hotspot in material research. The relationship between the nano-interface structure, electron conduction and the ion transport is a key issue in the field of electrochemistry research. This project proposed that the graphene/vanadium oxide nanocomposite storage materials are fabricated by hydrothermal method, sol-gel method and solid phase synthesis method. The composition, structure design, nano-structural control , process and mechanism of preparation and electrochemical mechanism of the composite interface of the graphene /vanadium oxide composites are researched, especially the graphene and vanadium oxide interface and electrochemical interface. The lithium storage mechanism, ion transport and electronic conduction law will be revealed. In further, the graphene surface by surface modification , the surface active sites of the control, interface state controlled build graphene oxide and vanadium, designed with high power density and high capacity retention ratio of the nanocomposite . By studying this project, we can enrich the micro interface control methods of the graphene/vanadium oxide composite materials. Combined with the evaluation of its electrochemical properties, we will further reveal the nanocomposite electrode ion transport mechanism for graphene/vanadium oxide nanocomposite applied as the energy storage materials. The results will provided important theoretical and experimental basis in the application of high-power devices.

英文关键词： graphene;vanadium oxide;controllable preparation;interface property