Collaborative Research: Unraveling the role of chemo-mechanics in all solid state batteries

合作研究：揭示化学力学在全固态电池中的作用

• 批准号: 2041505
• 负责人: Kelsey Hatzell
• 金额: $ 31.42万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-15 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2041505&HistoricalAwards=false
• 关键词: Collaborative; Research; Unraveling; role; chemo

Transportation accounts for 28% of energy-related greenhouse gas emissions in the United States. Currently, only 1% of the transportation sector employs electricity. Advanced energy storage systems are necessary for rapid adoption of electric vehicles. Energy dense batteries are paramount for decarbonization of transportation and grid applications. Replacing traditional graphite anode materials with lithium metal may provide a pathway for increasing the energy density of a lithium-ion battery. However, lithium metal batteries suffer from consumptive side effects which limits its cycle lifetime and charge time. Recently, there has been renewed interest in using a solid electrolyte with lithium metal anodes. A solid electrolyte can act as a barrier for unwanted physical and chemical decomposition that leads to unstable electrodeposition (e.g. dendrite and filament growth). This proposal intends to explore the role chemo-mechanics has on electrodeposition stability in all solid-state batteries. This project aims to engage high school, undergraduates, and graduate students in a diverse array of research and educational opportunities. Educational outreach through a range of organizations will aim to disseminate the research findings to the greater Princeton, Philadelphia, and West Lafayette communities.The fundamental nature of this research seeks to uncover the nature of lithium electrode kinetics at solid-solid interfaces for next generation energy dense solid-state batteries. Interface kinetics are well understood at soft interfaces (solid-gas and solid-liquid) common in many electrochemical energy conversion and storage applications. These interfaces are readily accessible with a range of different electroanalytical and materials characterization probes. Less is known regarding electrode kinetics at solid-solid interfaces where fundamental charge-transfer mechanisms can be affected by chemo-mechanical processes. This project aims to understand the nature of charge-transfer reactions at buried solid-solid interfaces via combining advanced in situ synchrotron techniques, electrochemistry, and meso-scale modeling. The project will explore lithium metal/garnet-type Li7La3Zr2O12 (LLZO) solid ion conductor electrolyte configurations. Synchrontron characterization data will be made available via the open source NanoHub platform hosted by Purdue University. Advanced understanding of lithium electrode kinetics will aid in device and materials design strategies for safe, energy-dense, and long lasting energy storage systems.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.

在美国，运输占与能源相关的温室气体排放的28％。目前，只有1％的运输部门使用电力。高级储能系统对于快速采用电动汽车是必需的。能量密度电池对于运输和电网应用的脱碳至关重要。用锂金属代替传统的石墨阳极材料可能会为增加锂离子电池的能量密度提供途径。但是，锂金属电池具有消费性副作用，这限制了其周期寿命和充电时间。最近，人们对将固体电解质与锂金属阳极使用。固体电解质可以充当不良物理和化学分解的障碍，从而导致不稳定的电沉积（例如树突和细丝生长）。该提案旨在探讨化学力学对所有固态电池电沉积稳定性的作用。该项目旨在让高中，大学生和研究生参与各种各样的研究和教育机会。通过一系列组织的教育宣传将旨在将研究发现传播给大普林斯顿，费城和西拉斐特社区。这项研究的基本性质旨在揭开下一代固体接口的锂电极动力学的性质，用于下一代固体界面，用于下一代固体固体稳定的固态浓密的固态浓密的固态电池。在许多电化学能量转换和存储应用中，界面动力学在软接口（固体气和固体液体）上得到了充分了解。这些界面很容易访问，并具有一系列不同的电积分和材料表征探针。关于电固界界面的电极动力学，在基本电荷转移机制可能会受到化学机械过程可能影响的固体动力学。该项目旨在通过结合先进的原位同步技术，电化学和中尺度建模，了解埋藏的固体界面上电荷转移反应的性质。该项目将探索锂金属/石榴石型LI7LA3ZR2O12（LLZO）固体离子导体电解质构型。 Synchrontron表征数据将通过Purdue University托管的开源NanoHub平台提供。对锂电极动力学的深入了解将有助于制定设备和材料设计策略，以实现安全，能量密集和持久的能源存储系统。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子的智力优点和更广泛的影响来评估值得支持的。