RUI: Dicarboximide-functionalized Oxanorbornyl Homopolymers and Diblock Copolymers for Use as Solid Polymer Electrolytes

非技术总结：能量存储设备，如锂离子电池，由于其在从电子和电动工具到汽车等设备中的广泛应用，对社会的大多数领域都是越来越重要的技术。正如新闻报道所指出的那样，随着使用的增加，提高这种电池的安全性和性能至关重要。该研究项目将开发和研究用于锂离子电池膜的新型聚合物材料。这些聚合物可能使电池的材料比现有的材料更不易燃，而且更轻，更灵活，或者有更多的存储空间。这项工作还将包括与其他机构和国家设施（如阿贡国家实验室）的科学家合作。对未来科研队伍的好处包括本科生在一个以本科生为主的机构参与这项研究的各个方面。通过参与数学，工程和科学成就（MESA）计划，将与代表性不足的高中生开展外展活动。技术概述：新的聚合物将被开发用于潜在的固体聚合物电解质支持锂离子或其他下一代电池。本研究的主要目的是更好地理解如何设计聚合物以促进离子运动与局部节段运动的解耦。这些聚合物将以二亚胺氧生冰片烯单体为基础。均聚物和二嵌段共聚物将采用开环复分解聚合法合成。研究的均聚物将集中在具有高盐溶解度和增加脆性参数的结构以及将盐作为单体本身的一部分的结构上。前者将作为分子量的函数和结构变化来研究，以增加脆性参数。二嵌段共聚物将在一个嵌段中包含离子导电单体，在另一个嵌段中包含高模量单体。双嵌段共聚物的形态应该允许在纳米尺度上混合这两种性质。这些新材料将通过介电光谱、原子力显微镜、DSC和可能的固态核磁共振进行评估。如果需要散射数据（x射线或中子），这项研究将与合作者或在国家实验室进行。本科生研究人员将参与这项研究的各个方面。

NON-TECHNICAL SUMMARY:Energy storage devices, such as lithium-ion batteries, are an increasingly important technology to most areas of society due to their broad use in devices from electronics and power tools to automobiles. As news reports have noted, improved safety and performance of such batteries are vital as their use grows. This research project will develop and study new polymer materials for use as membranes in lithium-ion batteries. These polymers might allow batteries to be constructed out of materials that are much less flammable than current ones, and to be lighter, flexible, or have more storage. This work will also include collaborations with scientists at other institutions and national facilities such as Argonne National Laboratory. Benefits to the future scientific workforce include undergraduate student involvement in all aspects of this research at a predominantly undergraduate institution. Outreach activities will be undertaken with underrepresented high school students through involvement with the Mathematics, Engineering, and Science Achievement (MESA) program. TECHNICAL SUMMARY:New polymers will be developed for potential use as solid polymer electrolyte supports in lithium-ion or other next-generation batteries. The major objective of this research is to better understand how to design polymers to facilitate the decoupling of ion motion from local segmental motion. These polymers will be based on dicarboximide oxanorbornene monomers. Homopolymers and diblock copolymers will be synthesized using ring-opening metathesis polymerization. The homopolymers studied will focus on structures that have high salt solubility and an increased fragility parameter as well as structures that incorporate the salt as part of the monomer itself. The former will be studied as a function of molecular weight and with structural changes to increase the fragility parameter. The diblock copolymers will incorporate the ion conducting monomer in one block and a high modulus monomer in the other block. The diblock copolymer morphologies should allow the blending of these two properties on a nanometer lengthscale. These new materials will be evaluated by dielectric spectroscopy, atomic force microscopy, DSC, and potentially solid-state NMR. If scattering data (X-rays or neutrons) are needed, this research will be conducted with collaborators or at national laboratories. Undergraduate student researchers will be involved in all aspects of this research.