NSF-BSF: Ion Transport in Composite Electrolytes: Breaking the Interfacial Energy Barriers

NSF-BSF：复合电解质中的离子传输：打破界面能垒

• 批准号: 2221827
• 负责人: Alexei Sokolov
• 金额: $ 20万
• 依托单位: University of Tennessee Knoxville
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2024-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2221827&HistoricalAwards=false
• 关键词: NSF; BSF; Ion; Transport; Composite

Non-technical AbstractElectrical energy storage is at the heart of everyday life. It is required for cell phones, laptops, standby power systems, electric vehicles, and other applications. Solid-state batteries, batteries that do not contain any liquid like most of today’s battery systems, have emerged as particularly promising solution. Ion conducting polymers combined with superionic ceramics are considered as the most promising materials for the solid electrolytes. With this project, funded by the Ceramics program in the Division of Materials Research, Professor Sokolov at the University of Tennessee, in collaboration with colleagues from Israel, studies fundamental mechanisms controlling ion transport in such composite polymer-ceramic materials. These two classes of materials have complimentary properties that up to now were not realized due to poor understanding of ion transport in disparate systems. The proposed research deepens our understanding of the mechanisms of ion conductivity and enables the design of composite electrolytes with required properties for solid state batteries and other energy storage devices. New energy storage systems are critical for many current and future technologies from electric vehicles to efficient renewable energy sources and could lead to a substantial decrease of the carbon emission. Additionally, this project allows postdoctoral scholars, graduate and undergraduate students to gain valuable experience in sophisticated experimental research and international collaborations. Outreach to K-12 students at and around the University of Tennessee is aimed at attracting more students to STEM careers.Technical AbstractThe interfacial resistance between the ceramic and polymer phases strongly suppresses the ionic conductivity and presents the main obstacle for this type of solid-state electrolytes. The US-Israel international collaborative research, supported by the Ceramics program in the Division of Materials Research, focuses on developing a fundamental understanding of mechanisms controlling ion transport in polymer-ceramic composites, specifically on unraveling parameters controlling interfacial barriers for ion transport between ceramic and polymer electrolytes. A combination of dielectric spectroscopy, nuclear magnetic resonance and neutron scattering spectroscopy, complemented by microscopy is used to elucidate the fundamentals of the transport mechanism. The experimental research will deepen fundamental understanding of microscopic parameters controlling ion transport in composite electrolytes. Insights gained from studying layered ceramic-polymer electrolyte model systems have the potential to be instrumental for a rational design of novel solid-state electrolytes with required conductivity, flexibility and stability, as well as reframing the electrical energy storage technology by developing new materials. The knowledge gained might also have strong impact on other fields of materials science, including applied physics and chemistry, airspace composites and environmental sustainability.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术抽象电源存储是日常生活的核心。它是手机，笔记本电脑，备用电动系统，电动汽车和其他应用所必需的。固态电池，不包含像当今大多数电池系统的任何液体的电池，已经成为特别有前途的解决方案。与超级离子陶瓷结合的离子导电聚合物被认为是固体电解质的最有前途的材料。通过该项目，由田纳西大学索科洛夫教授与以色列的同事合作，由材料研究部的陶瓷计划资助，研究基本机制在这种复合聚合物 - 陶瓷材料中控制离子运输。这两类材料具有免费的特性，到目前为止，由于对不同系统中离子运输的了解不足。拟议的研究加深了我们对离子电导率机制的理解，并可以设计具有固态电池和其他储能设备所需特性的复合电解质。新的储能系统对于从电动汽车到有效的可再生能源的许多当前和未来技术至关重要，并且可能导致碳排放量大大减少。此外，该项目允许博士后学者，研究生和本科生在普遍的实验研究和国际合作方面获得宝贵的经验。向田纳西大学及其周围的K-12学生推广，旨在吸引更多的学生来阻止职业生涯。技术摘要陶瓷和聚合物阶段之间的界面抗性强烈抑制了离子电导率，并为这种类型的固态电解质提供了主要障碍。在材料研究部的陶瓷计划的支持下，美国 - 以色列国际合作研究着重于对控制聚合物陶瓷组合物中离子运输的机制发展基本理解，专门针对控制陶瓷和聚合物电子之间离子运输的界面障碍的参数。通过显微镜完成的饮食光谱，核磁共振和中子散射光谱的结合，用于阐明运输机制的基本面。实验研究将加深对控制复合电解质中离子传输的微观参数的基本理解。从研究分层陶瓷聚合物电解质模型系统中获得的见解有可能对具有所需电导率，柔韧性和稳定性的新型固态电解质的合理设计具有重要作用，并通过开发新材料来重塑电力储能技术。所获得的知识也可能对其他领域的材料科学产生强大的影响，包括应用物理和化学，空域组成和环境可持续性。该奖项反映了NSF的法定任务，并通过使用该基金会的知识分子优点和更广泛的影响来评估NSF的法定任务。