Development of 600-MHz 19F-7Li Solid-State NMR Probe for In-Situ Analysis of Lithium Ion Batteries

摘要

Lithium is a highly attractive material for high-energy-concentration batteries, since it has low weight and high potential. Rechargeable lithium-ion batteries (LIBs), which have the extremely high gravimetric and volumetric energy densities, are currently the most preferable power sources for future electric vehicles and various portable electronic devices. In order to improve the efficiency and lifetime, new electrode compounds for lithium intercalation or insertion have been investigated for rechargeable batteries. Solid-state nuclear magnetic resonance (NMR) is a very useful tool to investigate the structural changes in electrode materials in actual working lithium-ion batteries. To detect the in-situ microstructural changes of electrode and electrolyte materials, 7Li-19F double-resonance solid-state NMR probe with a static solenoidal coil for a 600-MHz narrowbore magnet was designed, constructed, and tested successfully.