Collaborative Research: Understanding and Tailoring the Anode-Electrolyte Interfacial Layers on the Stabilization of Lithium Metal Electrode

合作研究：理解和定制阳极-电解质界面层对锂金属电极稳定性的影响

• 批准号: 2312247
• 负责人: Yue Zhou
• 金额: $ 24.97万
• 依托单位: University of Texas at Dallas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-01-01 至 2025-02-28
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2312247&HistoricalAwards=false
• 关键词: Collaborative; Research; Understanding; Tailoring; Anode

Metallic lithium (Li) is considered as one of the promising next-generation anode materials to replace conventional graphite in Li-ion batteries because of its high theoretical specific energy capacity and low reduction potential. However, dendrite growth on the electrode and unstable solid-electrolyte interphase (SEI) formation have created safety concerns in Li batteries and hindered practical applications. Introducing an artificial protective layer on the Li metal electrode is an effective strategy to stabilize the Li electrode, yet how this protective layer interacts with the electrochemical process of Li metal anode is not well understood. This project will integrate experiments and simulations to understand how the physical and chemical properties of the protective layer affect the electrochemical performance of the Li metal electrode. The fundamental knowledge gained will guide development of novel Li metal electrodes with high performance and improved safety for electric vehicles and other high-energy-density electrical storage devices. The project will also involve the education of graduate, undergraduate students, and K-12 students by course development, summer camp, and outreach activities in local museums. The overarching goal of this project is to develop a new understanding of the key physical and chemical properties of the protective layer that leads to stable charge/discharge processes of the Li metal electrode. The state-of-the-art guideline is insufficient, and the model only considers the influences of the limited mechanical properties of the protective layer on the stabilization of the Li metal electrode. In this project, by an effective integration of experimental synthesis, characterization and phase-field simulations, a new understanding will be generated on electrochemistry and deformation/failure mechanism of suppressing dendrites, including mass transport, electric potential, stress, and deformation. The research goal will be reached by working on several objectives: (1) Effect of mechanical properties of the protective layer on the suppression of Li dendrite growth; (2) Effect of ionic mass transfer behaviors of the protective layer on the stabilization of the Li metal electrode; (3) Novel protective layer on Li metal for the high-performance assembled cells. The elucidated correlation between physical and chemical properties of the protective layer, and the electrochemical processes of the electrode is expected to open pathways for the novel design and fabrication of Li metal electrodes, leading to stable and high-performance next-generation energy storage devices.This project is jointly funded by the CBET Electrochemical Systems program and the Established Program to Stimulate Competitive Research (EPSCoR).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.

金属锂（​​LI）被认为是含有锂离子电池中常规石墨的有前途的下一代阳极材料之一，因为其高理论特异性能量和低还原电位。然而，电极上的树突生长和不稳定的固体电解质相（SEI）形成在LI电池中引起了安全问题，并阻碍了实际应用。在LI金属电极上引入人造保护层是稳定LI电极的有效策略，但是该保护层如何与Li Metal Anode的电化学过程相互作用。该项目将集成实验和模拟，以了解保护层的物理和化学特性如何影响LI金属电极的电化学性能。获得的基本知识将指导开发具有高性能的新型LI金属电极，并改善了电动汽车和其他高能量密度的电气存储设备的安全性。该项目还将涉及当地博物馆的课程发展，夏令营和外展活动的研究生，本科生和K-12学生的教育。该项目的总体目标是对保护层的关键物理和化学特性有了新的理解，从而导致LI金属电极的稳定电荷/放电过程。最新的指南不足，该模型仅考虑保护层的有限机械性能对LI金属电极稳定的影响。在该项目中，通过实验合成，表征和相位模拟的有效整合，将对抑制树突的电化学和变形/故障机制产生新的理解，包括质量传输，电势，压力，变形和变形。将通过实现多个目标来实现研究目标：（1）保护层的机械性能对抑制Li树突生长的影响； （2）保护层的离子传质行为对LI金属电极稳定的影响； （3）用于高性能组装细胞的LI金属上的新型保护层。保护层的物理和化学特性之间的阐明相关性，以及电极的电化学过程有望为LI金属电极的新设计和制造开放途径，从而导致稳定且高性能的下一代储能设备。该项目由CBET电化学系统计划和启发竞争性研究的既定计划共同资助（EPSCOR）。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的影响来通过评估来支持的。

项目成果

Phase-Field Simulation and Machine Learning Study of the Effects of Elastic and Plastic Properties of Electrodes and Solid Polymer Electrolytes on the Suppression of Li Dendrite Growth

电极和固体聚合物电解质的弹塑性特性对抑制锂枝晶生长影响的相场模拟和机器学习研究

• DOI: 10.1021/acsami.2c03000
• 发表时间: 2022
• 期刊: ACS Applied Materials & Interfaces
• 影响因子: 9.5
• 作者: Ren, Yao;Zhang, Kena;Zhou, Yue;Cao, Ye
• 通讯作者: Cao, Ye

Manipulating the diffusion energy barrier at the lithium metal electrolyte interface for dendrite-free long-life batteries

• DOI: 10.1038/s41467-024-47521-z
• 发表时间: 2024-04
• 期刊: Nature Communications
• 影响因子: 16.6
• 作者: Jyotshna Pokharel;A. Cresce;Bharat Pant;Moon Young Yang;Ashim Gurung;Wei He;Abiral Baniya;B. Lamsal;Zhongjiu Yang;Stephen Gent;Xiaojun Xian;Ye Cao;William A. Goddard;Kang Xu;Yue Zhou

Decreasing Water Activity Using the Tetrahydrofuran Electrolyte Additive for Highly Reversible Aqueous Zinc Metal Batteries

• DOI: 10.1021/acsami.2c17714
• 发表时间: 2023-01-25
• 期刊: ACS APPLIED MATERIALS & INTERFACES
• 影响因子: 9.5
• 作者: He, Wei;Ren, Yao;Zhou, Yue
• 通讯作者: Zhou, Yue