Chemical modification of surfaces

拟议的研究计划侧重于获得化学修饰表面领域的新基础知识。新型生物传感器、生物材料、化学传感器、分子电子学、电催化、防腐、能量转换和储存等领域的发展需要材料的改性。燃料电池、太阳能电池、电池和电化学电容器)系统或改进了当前系统的性能和稳定性。*在这项研究计划中，我们将研究用于制造储能和转换系统电极的材料的新方法。两个主要因素使这项研究计划具有很强的创新性。首先，将多功能添加到复合电极的电极材料成分(活性材料、碳添加剂和粘结剂)中是新颖的，可能会带来重大进展。除了活性材料外，通常还使用碳添加剂来增加电极的电子传导性，并使用粘结剂来确保机械稳定性。在这项研究计划中，活性电极材料将具有类似粘结剂的性能，电活性分子将附着在碳添加剂和粘结剂上。其次，采用电化学剥离/化学修饰相结合的方法制备石墨烯材料。一锅法将涉及通过电化学剥离石墨形成石墨烯薄片，随后重氮离子和金属络合物的自发还原将分别获得由有机分子和金属颗粒修饰的石墨烯薄片。*通过该研究计划获得的知识对于开发改进和更安全的能量存储系统非常重要，正如最近在2015年10月29日的《自然展望》电池补充中所讨论的那样。此外，用金属纳米颗粒修饰的石墨烯薄片可以用作电催化剂，例如在燃料电池中。*****

The proposed research program focuses on the acquisition of new basic knowledge in the area of chemically modified surfaces. Modification of materials is required for the development of novel biosensors, biomaterials, chemical sensors, molecular electronics, electrocatalysis, corrosion protection and energy conversion and storage (eg. fuel cells, solar cells, batteries and electrochemical capacitors) systems or improved the performance and stability of the current ones. ****In this research program, we will investigate new approaches for the modification of materials used to fabricate electrodes in energy storage and conversion systems. Two main elements make this research program highly innovative. Firstly, addition of multifunctionality to electrode material components (active material, carbon additive and binder) of the composite electrode is novel and may lead to significant advances. In addition to the active material, a carbon additive is commonly used to increase the electronic conductivity of the electrode and a binder to insure mechanical stability. In this research program, binder-like properties will be provided to active electrode materials and electroactive molecules will be attached to the carbon additive and the binder. Secondly, graphene based materials will be prepared by coupled electrochemical exfoliation/chemical modification processes. A one-pot process will involve the formation of graphene sheets by electrochemical exfoliation of graphite that will be followed by the spontaneous reduction of diazonium ions and metal complexes to afford graphene sheets modified by organic molecules and metal particles, respectively.***The knowledge obtained with this research program is important for the development of improved and safer energy storage systems as discussed in the recent Nature Outlook Batteries supplement of October 29, 2015. Also, graphene sheets modified with metal nanoparticles could be useful as electrocatalysts, for example in fuel cells. *****