Colorimetric Determination of Lithium Content in Electrodes of Lithium-Ion Batteries

摘要

Determination of lithium content in different parts of lithium-ion batteries with good spatial resolution is crucial for the postmortem analyses of cycled batteries.Several analytical techniques,including X-ray diffraction,in situ Raman spectroscopy,transmission electron microscopy and electrochemical couloumetry,have been used to determine the amount of active lithium in graphite anodes,each of them featuring specific advantages and drawbacks.