石墨烯/聚离子液体纳米复合材料的辐射合成及其超级电容器性能研究

Graphene/polymeric ionic liquid nanocomposites show promise for potential applications in various fields such as supercapacitors and biosensors. In order to synthesize graphene/polymeric ionic liquid nanocomposites with excellent properties, we plan to realize the reduction of graphene oxide and polymerization of ionic liquid monomers simultaneously using radiation technique. We will systematically investigate the effect of several parameters including sensitizers and ionic liquid monomers on the structure, specific surface area, conductivity and thermal stability of the obtained graphene/polymeric ionic liquid nanocomposites. In the meantime, we will study the interaction between graphene and polymeric ionic liquid by TEM, Raman, SSNMR and other methods for improving the performance of graphene/polymeric ionic liquid nanocomposites. Then we will further study the supercapacitor performance of the as-prepared nanocomposites, such as specific capacitance, power density and long-term cycling performance. It is expected that the graphene/polymeric ionic liquid nanocomposites with well-dispersed graphene nanosheets, high specific surface area, high conductivity and thermal stability will be obtained by optimizing the preparation conditions. This work will establish a novel approach to the synthesis of graphene/polymeric ionic liquid nanocomposites.

石墨烯/聚离子液体纳米复合材料在超级电容器、生物传感器等领域有着广阔的应用前景。本项目拟采用辐射技术同步实现氧化石墨的辐射还原及含双键离子液体的辐射聚合，制备出高性能的石墨烯/聚离子液体纳米复合材料。申请者将系统研究合成条件，包括敏化剂和离子液体的选择等对石墨烯/聚离子液体复合材料的结构、比表面积、电导率及热稳定性等的影响，并通过TEM、Raman、固体核磁等表征手段，从分子层面上解析石墨烯与聚离子液体之间的相互作用机制，研究提高其性能的策略；然后进一步研究合成的石墨烯/聚离子液体纳米复合材料在超级电容器中的比电容、比功率以及长周期循环性能。预期通过优化合成条件来获得石墨烯分布均匀、高比表面积、高电导率及高热稳定性的石墨烯/聚离子液体纳米复合材料，建立一种制备石墨烯基纳米复合材料的新方法。

石墨烯及聚离子液体纳米复合材料在吸附分离及超级电容器等领域有着广阔的应用前景。本项目中采用辐射技术研究了氧化石墨烯的辐射还原及含双键离子液体的辐射聚合及交联，成功制备了石墨烯基纳米材料及聚离子液体凝胶材料，并研究了合成材料的结构、性能及其在超级电容器等方面的应用。本项目的完成建立了石墨烯基纳米复合材料及聚离子液体凝胶材料制备的新方法，拓展了辐射技术的应用领域。