RII Track-4 NSF: Novel Structure and Properties of Hybrid Electrolytes for Lithium Metal Batteries

RII Track-4 NSF：锂金属电池混合电解质的新颖结构和性能

• 批准号: 2132021
• 负责人: Yue Zhou
• 金额: $ 22.96万
• 依托单位: South Dakota State University
• 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: 2022-02-01 至 2023-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2132021&HistoricalAwards=false
• 关键词: RII; Track; NSF; Novel; Structure

High-performance and high-safety lithium-ion batteries are highly demanded to enable the fast development of wearable electronics, electric vehicles, etc. The hybrid electrolytes in battery cells such as lithium metal batteries have been studied recently to have the potential to meet the requirements. However, the extant works still suffer from the trade-off between mechanical strength and ionic conductivity, as well as the fundamental understanding of how those properties influence the performance of the assembled cells. This NSF EPSCoR RII Track-4:NSF fellowship project will provide an opportunity to collaborate with researchers at the California Institute of Technology (Caltech) to perform fundamental studies on hybrid electrolytes by integrating experimental and simulative efforts. The long-term collaboration is expected to improve the infrastructure in a sustainable way on the research capacity in the energy storage, high-performance computing, and education in Science, Technology, Engineering, and Mathematics (STEM) field. This project will also encourage underrepresented minorities to pursue science and engineering-related projects based on several programs on campus. The primary goal of this EPSCoR RII Track-4:NSF fellowship project is to develop a new understanding of the coupling mechanism between the properties of the novel hybrid electrolytes and the electrochemical performance of the Li metal battery by elucidating the process-structure-performance correlation of the hybrid electrolytes quantitatively. By partnering with researchers at Caltech, density functional theory-based first-principles calculations and experimental studies will be integrated to fundamentally investigate the interaction of the components in the hybrid electrolytes as well as the interaction with the lithium salts to understand their effects on the performance of the hybrid electrolytes. Driven by the simulative studies, advanced manufacturing techniques will be developed to fabricate unique hybrid electrolytes with the nonisotropic and tailored nanostructure. It holds the great potential to break the trade-off between high mechanical properties and high ionic conductivity in hybrid solid electrolytes. That, in turn, will provide effective strategies for the energy storage community to design and fabricate hybrid electrolytes with desired properties for safe and high-performance Li metal batteries.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.

高性能和高安全性锂离子电池高度要求，以便能够快速开发可穿戴电子，电动汽车等。最近已经研究了电池电池中的混合电解质（例如锂金属电池），以便有可能满足需求。但是，现有的作品仍然遭受机械强度和离子电导率之间的权衡，以及对这些特性如何影响组装细胞性能的基本理解。 NSF EPSCOR RII TRACK-4：NSF奖学金项目将为加利福尼亚理工学院（CALTECH）的研究人员合作，通过整合实验性和模拟性工作来进行有关混合电解质的基本研究。预计长期合作将以可持续的方式改善基础设施，以储能，高性能计算以及科学，技术，工程和数学（STEM）领域的教育的研究能力。该项目还将鼓励代表性不足的少数民族根据校园的几个计划来追求与科学和工程相关的项目。该EPSCOR RII TRACK-4：NSF奖学金项目的主要目标是通过阐明液化过程的过程结构实施 - 杂种电解器的相关性，对新型混合电解质的特性与LI金属电池的电化学性能之间的耦合机制进行新的了解。通过与加州理工学院的研究人员合作，将集成基于密度功能理论的第一原理计算和实验研究，以从根本上研究混合电解质中的组件的相互作用，以及与锂盐的相互作用，以了解它们对混合电解质的性能的影响。在模拟研究的驱动下，将开发出高级制造技术，以与非异型和量身定制的纳米结构制造独特的混合电解质。它具有打破高机械性能与混合固体电解质中高离子电导率之间的权衡的巨大潜力。反过来，这将为储能社区提供有效的策略，以设计和制造具有所需特性的混合电解质，以实现安全和高性能的Li金属电池。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛影响的审查标准来通过评估来支持的。