High-resolution probing of nano-scale graphene/metal interfaces for electrochemical applications

用于电化学应用的纳米级石墨烯/金属界面的高分辨率探测

• 批准号: 478197-2015
• 负责人: Goncharova, Lyudmila
• 金额: $ 1.82万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=579361
• 关键词: resolution; probing; nano; scale; graphene

Using nanostructures in design-critical applications requires an understanding of their structure- propertyfunction relationship. The ability to tailor individual components of the structure and an understanding of the impact of the interface on macroscopic properties are key to improve their performance. This project is aimed at improving adhesion and structural stability of novel graphene-based nanocomposite conductors developed by 3M, Canada through structural and functional optimization of their interfaces. Several issues will be addressed in this project: (1) Development of a comprehensive picture of composition, structure and bonding across the interface; (2) Correlation of these samples' adhesion of to their structural details; (3) Determination of chemical and thermal stability of the functional electrode structures and the possibility to functionalize them for improvement of adhesion for electrochemical applications, where strong permanent bonding between individual components of the structure is desired at various conditions. Dr. Goncharova's team will use high-resolution interface and surface probes, such as Rutherford backscattering (RBS), elastic recoil detection analysis (ERDA), X-ray photoemission spectroscopy (XPS), dynamic secondary ion mass spectroscopy (SIMS) and atomic force microscopy (AFM). These results will be compared with the degree of adherence tests, such as mechanical resistance to shear and fracture, as well as interfacial electrical impedance measured with electrochemical impedance spectroscopy (EIS). The project will create new competence for Canadian industry in the very important field of electrical energy storage applications, including Li-ion batteries.

在设计关键的应用中使用纳米结构需要了解它们的结构-性能-功能关系。定制结构的各个组件的能力以及了解界面对宏观性能的影响是提高其性能的关键。该项目旨在通过对新型石墨烯基纳米复合导体界面的结构和功能进行优化，提高其粘附性和结构稳定性。本项目将涉及几个问题：(1)开发跨界面的组成、结构和键合的综合图像；(2)这些样品的粘附性与其结构细节的关联；(3)功能电极结构的化学和热稳定性的确定以及使其功能化的可能性 用于改善电化学应用中的附着力，其中需要在各种条件下在结构的各个组件之间进行牢固的永久结合。 贡查洛娃博士的团队将使用高分辨率界面和表面探测器，如卢瑟福背散射(RBS)、弹性反冲探测分析(ERDA)、X射线光电子能谱(XPS)、动态二次离子质谱仪(SIMS)和原子力显微镜(AFM)。这些结果将与粘附性测试，如机械剪切和断裂阻力，以及用电化学阻抗谱(EIS)测量的界面阻抗进行比较。该项目将为加拿大工业在非常重要的电能存储应用领域创造新的竞争力，包括锂离子电池。