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

非技术总结：储能设备，如锂离子电池，由于其广泛用于从电子和电动工具到汽车的设备，因此对社会的大多数领域来说是一项越来越重要的技术。正如新闻报道所指出的，随着电池使用的增加，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作锂离子电池隔膜的新型聚合物材料。这些聚合物可以让电池由比目前的材料更不易燃的材料制成，并且更轻，更灵活，或具有更多的存储空间。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。对未来科学工作者的好处包括本科生在一个以本科为主的机构参与这项研究的各个方面。将通过参与数学、工程和科学成就（梅萨）计划，针对代表性不足的高中生开展外展活动。技术概要：将开发新的聚合物，作为锂离子电池或其他下一代电池的固体聚合物电解质载体。本研究的主要目的是更好地了解如何设计聚合物，以促进从局部段运动的离子运动去耦。这些聚合物将基于二甲酰亚胺氧杂降冰片烯单体。均聚物和二嵌段共聚物将使用开环易位聚合来合成。研究的均聚物将集中在具有高盐溶解度和增加的脆性参数的结构，以及将盐作为单体本身的一部分的结构。前者将作为分子量的函数进行研究，并通过结构变化来增加脆性参数。二嵌段共聚物将在一个嵌段中引入离子传导单体，在另一个嵌段中引入高模量单体。二嵌段共聚物的形态应该允许在纳米长度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和潜在的固态NMR进行评估。如果需要散射数据（X射线或中子），将与合作者或在国家实验室进行这项研究。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.