Self-Assembled Polymer Electrolyte Nanoarchitectures for Flexible Batteries

用于柔性电池的自组装聚合物电解质纳米结构

• 批准号: 0728975
• 负责人: Peter Kofinas
• 金额: --
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-15 至 2010-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0728975&HistoricalAwards=false
• 关键词: Self; Assembled; Polymer; Electrolyte; Nanoarchitectures

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.

摘要提案编号：0728975首席研究员：Kofinas， Peter隶属于：马里兰大学提案题目：柔性电池的自组装聚合物电解质纳米结构知识优点：近年来，对聚合物电池的兴趣急剧增加。随着锂电池在手机和笔记本电脑上的应用，对全固态电池的研究仍在继续。当前配置在阳极和阴极之间有液体或凝胶电解质。这会导致电解质流失和性能下降的问题。聚合物电解质比传统的无机玻璃或陶瓷电解质更柔顺。本研究的目的是研究基于嵌段共聚物自组装的新型纳米级聚合物电解质柔性薄膜。将合成嵌段共聚物，由聚乙烯氧化物（PEO）作为第一个嵌段，聚甲基丙烯酸甲酯和聚甲基丙烯酸（PMMA-ran-PMAA）的随机共聚物作为第二个嵌段。将合成的聚合物从溶剂中浇铸得到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转移。将采用多种微观结构和电性能表征工具来评估自组装纳米聚合物电解质的性能。用凝胶渗透色谱法结合光散射法测定分子量和多分散性指数。利用透射电子显微镜对柔性薄膜和块状聚合物薄膜的微观结构进行表征。聚合物电解质复合阻抗谱将用于评估离子传输和循环伏安法来定位电池电位。更广泛的影响：拟议研究的更广泛的影响涉及嵌段共聚物纳米级电池系统，该系统将具有柔性，因为它是由聚合物制成的。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，这种电池可以缠绕成线圈或加工成涂层和薄片。基于嵌段共聚物纳米级自组装的固体聚合物电解质将提供集成电子器件，但作为独立的柔性薄膜或涂层分布在大面积的衬底上。有源电路元件将直接集成在柔性衬底上。在这项工作中要进行的教育活动包括本科和研究生课程开发，研究生指导，以及培养不同的本科生和高中生。