Mechanochemical synthesis of LiNiO2

✍ Scribed by Chun-Chieh Chang; Prashant N. Kumta

• Book ID: 103844457
• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 249 KB
• Volume: 116
• Category: Article
• ISSN: 0921-5107
• DOI: 10.1016/j.mseb.2004.05.042

✦ Synopsis

The mechanochemical process has been used to synthesize precursors and evaluate their efficacy in generating the layered structure of LiNiO 2 at lower heat treatment temperatures. A comprehensive study of the as-milled precursor has been conducted using simultaneous TG/DTA. It is observed that the milling process is efficient in generating a disordered LiNiO 2 using Li 2 O 2 and NiO as the starting materials. The transformation of the disordered LiNiO 2 to the ordered form of LiNiO 2 however requires a minimum temperature of 700 • C. This observation suggests that the formation temperature of well-ordered LiNiO 2 (∼8% disorder) is limited not only by the chemical reaction kinetics of the starting materials but also the kinetics of ordering of Li and Ni in LiNiO 2 .