CAREER: Probing Interfaces in Energy Storage Materials Using Dynamic Impedance Spectroscopy and Multiharmonic Electrochemical Quartz Crystal Microbalance Dissipation

职业：使用动态阻抗谱和多谐波电化学石英晶体微天平耗散探测储能材料中的界面

• 批准号: 2047753
• 负责人: Niya Sa
• 金额: $ 58.9万
• 依托单位: University of Massachusetts Boston
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-06-01 至 2026-05-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2047753&HistoricalAwards=false
• 关键词: CAREER; Probing; Interfaces; Energy; Storage

With support from the Chemical Measurement and Imaging Program in the Division of Chemistry and partial co-funding from the Chemical Structures, Dynamics, and Mechanisms - B program, and the Solid State Materials Chemistry program in the Division of Materials Research, Dr. Niya Sa and her research team at the University of Massachusetts Boston are developing innovative approaches to advancing our understanding of the chemistry of rechargeable batteries. The work addresses global challenges in the areas of energy storage, utilization, and environmental stewardship. Dr. Sa will work to communicate the underlying science and its importance to the general public through outreach activities that seek to explain the principles of electrochemistry, battery chemistry and green chemistry to K-12 students and members of groups underrepresented in science-technology-engineering-mathematics (STEM). With this award, Dr. Sa’s team will be implementing the hybrid Dynamic Impedance Spectroscopy/Multiharmonic Electrochemical Quartz Crystal Microbalance Dissipation (DEIS EQCM-D) platform to probe complex interfacial systems. Specifically, they seek to improve understanding of the dynamic Solid Electrolyte Interphase (SEI) of energy storage materials - critical for advancing next-generation energy storage devices, yet impeded by the lack of reliable in situ experimental techniques. The major focus of this work is to enable quantification of the microscopic mass exchange that accounts for SEI dissolution, reconstruction, and instability. Coupling DEIS with EQCM-D offers a significant advance over previously reported ex situ electrochemical impedance (EIS) or gravimetric EQCM measurements. Working at the interface between analytical chemistry and material science, the Sa group seeks to advance fundamental understanding and enable new approaches to energy storage materials and electrolytes where performance characteristics are critically determined by the dynamic ion intercalation and mass transport reactions at interfaces. Students engaged in the work will be trained in state-of-the-art electroanalytical techniques, energy storage concepts, instrumentation, and simulations. Dr. Sa is working to provide educational opportunities for underrepresented groups, and to engage with the local community through collaboration with the local Science Museum.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.

在化学系化学测量和成像项目的支持下，以及化学结构、动力学和机理-B项目以及材料研究部固态材料化学项目的部分共同资助下，Niya Sa博士Sa 博士和她在马萨诸塞大学波士顿分校的研究团队正在开发创新方法，以增进我们对可充电电池化学的理解。Sa 博士将致力于解决能源存储、利用和环境管理领域的全球挑战。通过外展活动向公众传达基础科学及其重要性，这些活动旨在向 K-12 学生和科学技术工程数学 (STEM) 领域代表性不足的群体成员解释电化学、电池化学和绿色化学的原理。凭借该奖项，Sa 博士的团队将实施混合动态阻抗谱/多谐波电化学石英晶体微天平耗散 (DEIS EQCM-D) 平台来探测复杂的具体来说，他们寻求提高对储能材料的动态固体电解质界面（SEI）的理解——这对于推进下一代储能装置至关重要，但由于缺乏可靠的原位实验技术而受到阻碍。这项工作旨在量化微观质量交换，从而解释 SEI 溶解、重构和不稳定性，将 DEIS 与 EQCM-D 耦合，比之前报道的异位电化学阻抗 (EIS) 或重量分析取得了重大进展。 Sa 小组致力于分析化学和材料科学之间的交叉领域，致力于推进对储能材料和电解质的基本理解并实现新方法，其中性能特征主要由界面处的动态离子嵌入和传质反应决定。从事这项工作的学生将接受最先进的电分析技术、储能概念、仪器和模拟方面的培训。Sa 博士致力于为弱势群体提供教育机会，并通过合作与当地社区互动。与当地科学博物馆。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Electrolyte Role in SEI Evolution at Si in the Pre-lithiation Stage vs the Post-lithiation Stage

锂化前阶段与锂化后阶段电解质在 Si 的 SEI 演变中的作用

• DOI: 10.1149/1945-7111/acb617
• 发表时间: 2023
• 期刊: Journal of The Electrochemical Society
• 影响因子: 3.9
• 作者: Cora, Saida;Key, Baris;Vaughey, John;Sa, Niya
• 通讯作者: Sa, Niya

Evolution of the Dynamic Solid Electrolyte Interphase in Mg Electrolytes for Rechargeable Mg-Ion Batteries

• DOI: 10.1021/acsami.2c13037
• 发表时间: 2022-10-07
• 期刊: ACS APPLIED MATERIALS & INTERFACES
• 影响因子: 9.5
• 作者: Fan, Shengqi;Cora, Saida;Sa, Niya
• 通讯作者: Sa, Niya