A novel approach to in situ diffractometry of intercalation materials: TheEDXD technique - Preliminary results on LiNi0.8Co0.2O2

The application of the energy dispersive X-ray diffraction (EDXD) technique to in situ structural measurements on battery materials is shown for the f irst time. EDXD may present a promising alternative for this kind of measur ement to the traditional diffractometric technique, even when the synchrotr on radiation is used. The merits and drawbacks of this method are discussed , with particular attention to the solution of the X-ray absorption problem that, reducing the signal intensity, imposes the use of specifically desig ned cells. Finally, preliminary results obtained in the study of a typical commercial cathodic material for Li-ion batteries (i.e., LiNi0.8Co0.2O2) ar e reported. (C) 2000 The Electrochemical Society. S1099-0062(99)10-028-2. A ll rights reserved.