石墨烯/“纳米存储器”复合物的电沉积构筑及其在防护涂层中的应用基础研究

通过在石墨烯类材料表面负载“纳米存储器”材料，赋予石墨烯组分兼具“被动防护”和“主动防护”功能是石墨烯复合防护涂层未来的发展方向。项目针对现有石墨烯/“纳米存储器”复合物制备方法的不足，提出采用电化学辅助沉积技术，通过石墨烯纳米片与电极间的电化学碰撞实现电子转移，在石墨烯表面原位电沉积构建得到厚度更大进而可负载更足量缓蚀剂、结合力更高、粗糙度和多孔性更大的氧化物或其他种类（如LDH）的纳米存储器材料；并将所得石墨烯/“纳米存储器”复合物应用于防护涂层中，构建长效防护性能更加优异、能满足实际应用需求的复合涂层体系。在此基础上，研究石墨烯/“纳米存储器”复合物的电沉积调控规律和电沉积机理、对涂层防护性能的调控规律和防护机制。通过本项目的研究，开拓纳米颗粒表面电沉积的新领域，发展石墨烯表面负载纳米存储器材料的新方法，拓宽石墨烯涂层性能改进的新思路，最终推动石墨烯涂层的工业化进程。

Graphene coatings having both “active protection” and “passive protection” functions, provided by loading nanocontainers on graphene substrates, are future developing direction in the field of anti-corrosive coating industry. Aiming at overcoming the shortcomings of conventional preparation methods of graphene/nanocontainer composites, this project proposes to utilize electrochemically assisted technique for the fabrication of mesoporous sol-gel oxide films and other kinds of nanocontainer materials, e.g. layered double metal hydroxides (LDHs), on graphene nanosheets. Electrodeposition on graphene is a result of electrochemical collision between graphene nanosheets and electrode. According to our preliminary investigation, the as-predicted nanocomposites have a thickness of 100 nm-level, highly porous morphology and strongly adhering strength to graphene substrate. A new generation graphene coating is thus fabricated by using the as-prepared graphene/mesoporous oxide (or LDHs) nanocomposite as a new type of nanocontainers. The project will emphasize on the study of electrodeposition process and electrodeposition mechanism of graphene/nanocontainers, and the corrosion performance of new graphene coatings and their protection mechanism. The project opens a new research field of electrodeposition on graphene nanosheets, expands a new strategy for the fabrication of nanocontainer materials on graphene substrate, developing a new way to improve corrosion performance of graphene coatings, and eventually promotes the industrial progress of graphene coatings.