Polymers for Electrochemical Energy

电化学能源聚合物

• 批准号: RGPIN-2018-03698
• 负责人: Holdcroft, Steven
• 金额: $ 7.65万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=711970
• 关键词: Polymers; Electrochemical; Energy

Two classes of functional macromolecules that are driving next-generation technologies are Ion-Conducting Polymers (for electrochemical energy conversion) and Pi-Conjugated Polymers (for organic electronics). Through the design and synthesis of selected functional macromolecules this program explores the relationships between their molecular structure, morphology, and properties designed to provide a platform of fundamental knowledge and training to foster the development of next generation electrochemical energy technologies. Interest in ion-conducting polymers, particularly H+ and OH- conducting, has grown commensurately with the emergence of electrochemical energy conversion technologies (e.g., fuel cells, electrolyzers, redox flow batteries, solar fuel devices). Perfluorosulfonic acid (PFSA) ionomer, for which the polymer chains organize to provide ionic channels in thin films, is the quintessential proton-conducting polymer; but it has significant, well-known shortcomings. In the corollary case of alkaline media, polymers employed for hydroxide-transporting membranes typically possess quaternary ammonium groups covalently bonded to a polymer backbone, but the stability of these groups is poor in highly alkaline solutions. An important development in the evolution of polymer films for emerging electrochemical technologies involves exploring strategies that couple the ease-of-processing characteristics of polymers with the formation of long range order in the solid state to promote ionic transport. In the case of anion transporting materials the complexity of designing organic polymers that are stable to caustic environments is an additional challenge. The primary objective of this program of research is the exploration of synthetic strategies towards the design of novel ion-containing polymers that can be used to further understand how molecular structure controls polymer morphology and, in turn, how the morphology facilitates ion-transport in the context of developing durable solid polymer electrolytes. Sub-projects within this program address the structural control of hydrocarbon-based, proton- and hydroxide-conducting polymers, and builds on two very different oligomeric building blocks recently developed in our laboratory. In addition, in the context of developing a program in solid polymer electrolytes, we will develop an interdisciplinary field of photoelectrochemistry at pi-conjugated polymer electrodes. This program is aimed at investigating a strategy involving polymer synthesis, electrochemistry, and photoelectrochemistry of pi-conjugated polymers in solid polymer electrolytes, with the future goal of liberating hydrogen from solar-irradiated organic films.

驱动下一代技术的两类功能性大分子是离子传导聚合物（用于电化学能量转化）和PI结合聚合物（用于有机电子学）。通过设计和合成选定的功能大分子，该程序探讨了其分子结构，形态学和属性之间的关系，旨在提供基本知识和培训平台，以促进下一代电化学能源技术的发展。 对离子传导聚合物的兴趣，尤其是H+和OH-导电，与电化学转化技术的出现相一致（例如，燃料电池，电解液，电解剂，氧化还原流量电池，太阳能燃料设备）。全氟磺酸（PFSA）离子体，聚合物链组织以在薄膜中提供离子通道，是典型的质子传导聚合物。但是它具有重大的，众所周知的缺点。在碱性培养基的推论情况下，用于氢氧化物传输膜的聚合物通常具有与聚合物主链共价键合的Quaternary铵基，但是这些基团的稳定性在高碱性溶液中很差。 新兴电化学技术的聚合物膜进化中的一个重要发展是探索策略，使聚合物的易于加工特征与固态的远距离顺序形成以促进离子运输。在阴离子运输材料的情况下，设计对苛性环境稳定的有机聚合物的复杂性是一个额外的挑战。 该研究计划的主要目的是探索新型离子聚合物设计的合成策略，这些策略可用于进一步理解分子结构如何控制聚合物形态，然后形态如何促进离子 - 传输在开发耐用固体聚合物的背景下。该程序中的子项目介绍了基于碳氢化合物，质子和氢氧化物导导的聚合物的结构控制，并建立在我们实验室最近开发的两个截然不同的寡聚组件上。 此外，在开发固体聚合物电解质程序的背景下，我们将在PI偶联的聚合物电极上开发光电化学的跨学科领域。该计划旨在研究涉及聚合物合成，电化学和光电化学的策略，其固体聚合物电解质中的PI结合聚合物的光学化学，未来的目标是将氢从太阳能辐射的有机膜中释放出来。