Collaborative Research: Hybrid Block Copolymer Electrodes for Electrochemical Energy Storage

合作研究：用于电化学储能的混合嵌段共聚物电极

• 批准号: 1336073
• 负责人: Rafael Verduzco
• 金额: $ 19.72万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1336073&HistoricalAwards=false
• 关键词: Collaborative; Research; Hybrid; Block; Copolymer

PI: Lutkenhaus, Jodie / Verduzco, RafaelProposal Number: 1336716 / 1336073Institution: Texas Engineering Experiment Station/William Marsh Rice UniversityTitle: Collaborative Research: Hybrid Block Copolymer Electrodes for Electrochemical Energy StorageStorage of energy through electrochemical means (batteries, capacitors) is critical to providing power for advanced transportation and portable electronics. Next-generation energy storage materials must simultaneously satisfy a number of criteria: excellent charge and ion transport, high capacity, and reversible charge transfer. For this reason, electron- and ion-conducting polymers are often explored as additives in cathodes such as V2O5, LiCoO2, LiFePO4, etc. to form hybrid electrodes. Unfortunately, it remains extremely difficult to obtain a hybrid electrode that successfully balances electron and ion transport with charge transfer because of large-scale phase separation and poor structure control among the electrode?s various components. This project will investigate a model system of hybrid electrodes for energy storage based on nanostructured blends of poly(3-alkylthiophene)-block-poly(ethylene oxide) (P3AT-b-PEO) multifunctional block copolymers and V2O5. P3AT-b-PEO is capable of simultaneous electron and ion transport, and V2O5 is a commonly explored high-capacity cathode material for Li-ion batteries. V2O5 will be synthesized within selected polymer blocks using ?structure directed? synthesis. The PIs hypothesize that through bottom- up assembly methods, the resulting hybrid materials will exhibit favorable properties characteristic of both organic and inorganic components. This project will determine the relationship between block copolymer composition and morphology as it is affected by V2O5, side chain functionalization, and electrochemical performance. The relationship between block copolymer morphology and charge transfer, electron transport, and ion transport has never before been systematically investigated as a whole, so the proposed research will establish a broad knowledge base to guide the development of multifunctional block copolymers for energy storage. First, the PIs will establish relationships between the morphology of hybrid electrodes containing block copolymer bearing a single type of side chain and V2O5 and electrochemical performance (Objectives 1 and 2). This knowledge will then be applied to a wider family of block copolymers of varying side chain chemistry so as to balance electrochemical properties with processability.The proposed work will have broader impacts within the scientific community as well as the general public through educational activities and outreach. Within the scientific community, this work will establish a knowledge base for multifunctional block copolymers in electrodes, where several processes (reaction and diffusion) must be balanced. The PIs will pursue educational activities including hosting high school teacher(s) through Enrichment Experiences in Engineering, providing summer research opportunities for talented, underrepresented groups from the Houston Community College system, hosting Nova-sponsored, materials science-themed Science Cafés at Houston-area high schools, and organizing Texas Soft Matter Meetings at TAMU and Rice University.

PI: Lutkenhaus, Jodie / Verduzco, RafaelProposal Number: 1336716 / 1336073Institution: Texas Engineering Experiment Station/William Marsh Rice UniversityTitle: Collaborative Research: Hybrid Block Copolymer Electrodes for Electronic Energy StorageStorage of energy through electrochemical means (batteries, capacitors) is critical to providing power for advanced transport and portable电子产品。下一代储能材料必须同时满足许多标准：良好的充电和离子运输，高容量和可逆的电荷转移。因此，电子和离子传导聚合物经常被探索为阴极中的添加剂，例如V2O5，LICOO2，LIFEPO4等，以形成混合电极。不幸的是，由于大尺度相距和各种组件之间的结构控制差，可以获得成功平衡电子和离子传输与电荷传递平衡的混合电极。该项目将研究一个基于聚（3-硫代噻吩） - 堆积 - 聚集（氧化乙烷）（P3AT-B-PEO）多功能块共聚物和V2O5的纳米结构的混合物的混合电子模型。 P3AT-B-PEO具有简单的电子和离子传输，V2O5是一种常见的锂离子电池的高容量阴极材料。 V2O5将使用定向的结构在选定的聚合物块中合成？合成。 PI假设通过自下而上的组装方法，所得的杂交材料将提取有机和无机成分的特性。该项目将确定块共聚物组成与形态之间的关系，因为它受V2O5，侧链功能化和电化学性能的影响。整体上从未对块共聚物形态与电荷传递，电子传输和离子传输之间的关系之间的关系，因此拟议的研究将建立广泛的知识基础，以指导多功能块共聚物的发展以进行储能。首先，PI将在包含单一类型的侧链和V2O5的块共聚物的混合电极的形态与电化学性能（目标1和2）之间建立关系。然后，这些知识将应用于各种侧链化学的块共聚物一组，以平衡电化学特性与处理性。拟议的工作将通过科学界以及公众通过教育活动和外展产生更大的影响。在科学界，这项工作将为电子中的多功能块共聚物建立知识库，其中必须平衡多个过程（反应和扩散）。 PI将通过工程学丰富的经验进行教育活动，包括举办高中老师，为休斯顿社区学院系统的才华横溢，人为不足的团体提供夏季研究机会，并在休斯顿地区举办了Nova赞助的NOVA资料，在休斯敦 - 地区高中的材料科学主题科学咖啡馆，以及在Tamu和Ride Comey of Tamu和Ride Colicay的Texas Soft Incer Ince Mectring。