The Relationship between the Structural Changes and the Capacity Retention of Oxygen Rich LiMn_2O_4 Type Cathode Materials during Cycling Studied by In Situ X-Ray Diffraction

摘要

1. Several new boron based systems have been developed at BNL. When used as additives in electrolytes for lithium batteries, they can complex with the anion, increase the ionic conductivity and the cation transfer number 2. Synchrotron based in situ XRD and x-ray absorption techniques are powerful tool to study the relationships between the structural changes and the performance of new cathode and anode materials during cycling 3. The PSD and image-plate detectors provide fast data collection. They are very useful for in situ studies, especially when kinetic effects are important issues.