Self-Assembled Polymer Electrolyte Nanoarchitectures for Flexible Batteries

美国国家科学基金会-化学运输系统部颗粒多相过程计划（1415）摘要提案编号：0728975主要研究者：Kofinas，Peter隶属关系： 马里兰州大学提案题目：自组装聚合物电解质纳米结构用于可充电电池知识分子优点：近年来，人们对聚合物电池的兴趣急剧增加。随着用于手机和笔记本电脑的锂电池的出现，对全固态电池的研究一直在继续。目前的配置在阳极和阴极之间具有液体或凝胶电解质。这导致电解质损失和性能随时间降低的问题。聚合物电解质比常规无机玻璃或陶瓷电解质更柔顺。本论文的主要目的是研究基于嵌段共聚物自组装的新型纳米聚合物电解质柔性薄膜。将合成嵌段共聚物，其由作为第一嵌段的聚环氧乙烷（PEO）和作为第二嵌段的聚（甲基丙烯酸甲酯）和聚（甲基丙烯酸）的无规共聚物（PMMA-ran-PMAA）组成。从溶剂中浇铸合成的聚合物导致自组装的柔性纳米复合材料结构，具有高离子电导率和高锂离子迁移。各种微结构和电性能表征工具将被用来评估自组装纳米结构聚合物电解质的性能。分子量和多分散指数将使用凝胶渗透色谱法结合光散射测定。柔性薄膜和块状聚合物薄膜的微观结构将通过透射电子显微镜来表征。聚合物电解质复阻抗谱将进行评估离子传输和循环伏安法，以解决电池potential.Broader影响：更广泛的影响，拟议的研究涉及到嵌段共聚物纳米电池系统，这将是灵活的，因为它是由聚合物。聚合物电解质的易加工性将允许生产薄膜纳米级自组装柔性电池，这些电池可以缠绕成线圈或加工成涂层和片材。基于嵌段共聚物的纳米级自组装的固体聚合物电解质将为器件提供集成电子器件，但作为独立的柔性膜或涂层分布在大面积基底上。有源电路元件将直接集成在柔性基板上。在这项工作中开展的教育活动包括本科生和研究生课程的开发，研究生辅导，以及对不同人口的本科生和高中生的培训。

National Science Foundation - Division of Chemical &Transport Systems Particulate & Multiphase Processes Program (1415)ABSTRACTProposal Number: 0728975 Principal Investigators: Kofinas, Peter Affiliation: University of Maryland Proposal Title: Self-Assembled Polymer Electrolyte Nanoarchitectures for FlexibleBatteries Intellectual Merit:In recent years, the interest in polymeric batteries has increased dramatically. With the advent of lithium batteries used in cell phones and laptop computers, the search for an all solid state battery has continued. Current configurations have a liquid or gel electrolyte between the anode and cathode. This leads to problems with electrolyte loss and decreased performance over time. Polymer electrolytes are more compliant than conventional inorganic glass or ceramic electrolytes. The goal of the proposed research is to investigate novel nanoscale polymer electrolyte flexible thin films based on the self-assembly of block copolymers. Block copolymers will be synthesized, consisting of polyethylene oxide (PEO) as the first block, and a random copolymer of poly(methylmethacrylate) and poly(methacrylic acid) (PMMA-ran-PMAA) as the second block. Casting of the synthesized polymer from a solvent results in a self-assembled flexible nanocomposite structure, with high ionic conductivity and high lithium ion transference. A variety of microstructure and electrical properties characterization tools will be employed to evaluate the self-assembled nanostructured polymeric electrolyte's performance. Molecular weight and polydispersity index are to be determined using gel permeation chromatography combined with light scattering. The microstructure of flexible thin and bulk polymer films will be characterized by transmission electron microscopy. Polymer electrolyte complex impedance spectroscopy will be performed to assess ion transmission and cyclic voltammetry to address cell potentials.Broader Impacts:The broader impacts of the proposed research relate to a block copolymer nanoscale battery system which would be flexible because it is made out of a polymer. The ease of processing a polymer electrolyte would allow the production of thin film nanoscale self-assembled flexible batteries that could be wound into coils or processed as coatings and sheets. A solid polymer electrolyte based on the nanoscale self-assembly of block copolymers will provide devices with integrated electronics, yet distributed over a large area substrate as freestanding flexible films or coatings. The active circuit components would be directly integrated on the flexible substrate. The education activities to be undertaken in this work include undergraduate and graduate course development, graduate student mentoring, and training of a diverse population of undergraduate and high school students.