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

电池和燃料电池等许多电化学设备的性能取决于离子的运动。例如，锂离子的运动决定了电池的充电速度，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了解这些动态，并针对特定的地点。在我们下一阶段的研究计划中，我们建议使用6Li固体核磁共振(SS-核磁共振)来量化Li+离子动力学，并将特定位置的动力学与重要的新正极材料的晶体结构相关联。感兴趣的材料包括开放框架的焦磷酸盐和焦磷酸盐。循环锂离子电池的原位7Li核磁共振波谱将用于研究电化学过程的发生。

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.