Beyond Lithium Ion - Magnetic Resonance Strategies for Characterization of Sodium-Air and Sodium-Ion Batteries

超越锂离子 - 用于表征钠空气和钠离子电池的磁共振策略

• 批准号: RGPIN-2017-06095
• 负责人: Goward, Gillian
• 金额: $ 10.78万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=748247
• 关键词: Beyond; Lithium; Ion; Magnetic; Resonance

My research program employs solid-state nuclear magnetic resonance (NMR) spectroscopy and magnetic resonance imaging (MRI) methods to characterize ion dynamics and reaction pathways in materials. The focus is on developing better materials for alternative energy devices such as electric car batteries. Here, I propose to explore two important new domains: first, novel energy storage devices including sodium-air and sodium-ion electrochemical cells and second, applications for our MRI methodology to study reactions in situ. Our long-term goal is to contribute to the development of commercially viable sodium air batteries (SABs) and sodium ion batteries (SIBs). This would benefit Canada by providing new clean, cost-effective energy storage technologies suitable to both grid-scale and vehicular energy storage. These technologically challenging devices will require innovation in materials characterization, design, and manufacturing, and achieving these milestones will contribute economic benefit to Canada.Magnetic Resonance Imaging: We have developed methodology for in situ evaluation of the ion concentration gradients and diffusion properties within functioning electrochemical cells. This strategy uses a combined magnetic resonance imaging and pulsed field gradient approach. These in situ MRI methods for probing electrochemical reactions are highly original within Canada, and implemented in less than ten institutions world-wide. Our MRI and solid-state NMR tools enable us to provided quantitative data on transport parameters that are not accessible by standard electrochemical measurements. These data are necessary for on-vehicle, real-time modeling of battery state-of-health. Sodium Air Batteries: SABs represent an exciting high-energy density alternative to gasoline combustion engines. However, new materials are required, and their complex chemistry needs to be better understood. 23Na solid-state NMR is able to identify reaction products of the sodium-oxygen electrochemical reaction. This exciting new field is currently filled with un-answered questions related to reaction stability, reversibility, and pathway, all of which must be solved before such devices become commercially relevant.Sodium Ion Batteries: We will utilize a combination of electrochemistry, solid-state NMR and electronic structure calculations to investigate the local structural environments of SIB cathode materials and solid-state electrolytes. Ion dynamics will also be measured, as they are a critical property of materials for electrochemical devices. My group has demonstrated a variety of NMR tools that are utilized for site-specific, quantitative evaluation of Li+ dynamics, and correlated to performance in lithium ion batteries. Here we will implement 23Na NMR spectroscopy for characterizing Na+ transport in both cathode and electrolyte materials in SIBs.

我的研究项目采用固态核磁共振（NMR）光谱和磁共振成像（MRI）方法来表征材料中的离子动力学和反应途径。重点是为电动汽车电池等替代能源设备开发更好的材料。在这里，我建议探索两个重要的新领域：第一，新型储能装置，包括钠-空气和钠离子电化学电池，第二，我们的MRI方法在原位研究反应中的应用。我们的长期目标是为开发商业上可行的钠空气电池（SAB）和钠离子电池（SIB）做出贡献。这将使加拿大受益，提供适合电网规模和车辆储能的新的清洁、具有成本效益的储能技术。这些技术上具有挑战性的设备将需要在材料表征，设计和制造方面的创新，实现这些里程碑将有助于加拿大的经济效益。磁共振成像：我们已经开发了在功能电化学电池内的离子浓度梯度和扩散性能的原位评价方法。该策略使用组合的磁共振成像和脉冲场梯度方法。这些用于探测电化学反应的原位MRI方法在加拿大是高度原创的，并在全球不到十个机构中实施。我们的MRI和固态NMR工具使我们能够提供标准电化学测量无法获得的传输参数的定量数据。 这些数据对于车载电池健康状态的实时建模是必要的。钠空气电池：SAB代表了汽油内燃机令人兴奋的高能量密度替代品。然而，需要新材料，并且需要更好地理解其复杂的化学性质。23 Na固态NMR能够识别钠-氧电化学反应的反应产物。这一令人兴奋的新领域目前充满了与反应稳定性、可逆性和途径相关的未回答的问题，所有这些问题都必须在此类设备具有商业意义之前得到解决。钠离子电池：我们将利用电化学、固态NMR和电子结构计算的组合来研究SIB阴极材料和固态电解质的局部结构环境。 还将测量离子动力学，因为它们是电化学设备材料的关键属性。我的团队已经展示了各种NMR工具，用于特定地点的Li+动力学定量评估，并与锂离子电池的性能相关。在这里，我们将实施23 Na NMR光谱，用于表征SIB中阴极和电解质材料中的Na+传输。