Solid-State Magnetic Resonance Studies of Reaction Mechanisms and Ion Dynamics in Materials for Energy Storage and Conversion

能量存储和转换材料中反应机制和离子动力学的固态磁共振研究

• 批准号: 251143-2012
• 负责人: Goward, Gillian
• 金额: $ 4.01万
• 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: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=525092
• 关键词: Solid; State; Magnetic; Resonance; Studies

The performance of many electrochemical devices, such as batteries and fuel cells, depends on the movement of ions. For example, the movement of lithium ions determines the rate at which a battery can be recharged, and the acceleration performance of an electric vehicle. The recurring theme in our research is to understand these dynamics quantitatively, and site-specifically. In the next phase of our research program we propose to quantify Li+ ion dynamics, and to correlated site-specific dynamics with the crystal structures of important new cathode materials, using 6Li solid-state nuclear magnetic resonance (SS-NMR). Materials of interest include the open-framework tavorites and pyrophosphates. In situ 7Li NMR spectroscopy of cycling lithium ion cells will be implemented to study the electrochemical processes as they happen.

许多电化学装置的性能，如电池和燃料电池，取决于离子的运动。 例如，锂离子的运动决定了电池的充电速率，以及电动汽车的加速性能。 我们研究中反复出现的主题是定量地、针对具体地点地了解这些动态。 在我们研究计划的下一阶段，我们建议使用6Li固态核磁共振（SS-NMR）量化Li+离子动力学，并将特定位点的动力学与重要的新阴极材料的晶体结构相关联。 感兴趣的材料包括开放框架的tavorites和焦磷酸盐。循环锂离子电池的原位7 Li NMR光谱将被实施以研究它们发生时的电化学过程。