The structural characteristics of lithium nickel phosphate (LiNiPO 4) prepared by solid-state chemical reaction have been studied in detail using the analytical electron microscopy and Raman spectroscopy measurements. The high-resolution transmission electron microscopy and selected area electron diffraction measurements indicate that the grown LiNiPO 4 is well-crystallized in olivine structure without any indication of crystallographic defects such as dislocations or misfits. The energy-dispersive X-ray spectrometry coupled with the elemental compositional mapping using high-angle angular dark field scanning electron microscopy confirms the chemical quality of the grown LiNiPO 4 in terms of homogeneity and uniform elemental distribution characteristics. The local structure and chemical bonding between NiO 6 octahedral and (PO 4) 3- tetrahedral groups probed by Raman spectroscopy also indicate the high-quality of LiNiPO 4. Structural analysis of the delithiated Li 0.09NiPO 4 phase indicates lattice contraction and distortion upon lithium extraction. A detailed analysis and comparison of the pristine and delithiated phases is also reported.
!!!All Science Journal Classification (ASJC) codes
- 化学 (全般)