Thin-film cathodes for secondary lithium batteries

✍ Scribed by P. Fragnaud; R. Nagarajan; D.M. Schleich; D. Vujic

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 354 KB
• Volume: 54
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(94)02102-9

✦ Synopsis

We have prepared thin films of the active cathode materials LiCoO2 and LiMn:O4 by chemical techniques. Low pressure chemical vapor deposition was successful at readily preparing LiCoO2 at temperatures ranging from 450 to 650 °C; however, in order to prepare the spinel phase LiMn204 temperatures greater than 600 *C were required. The use of a spray pyrolysis technique was successful in preparing both LiCoO2 and LiMn:O4 at substrates heated to temperatures as low as 400 *C. This temperature was probably not the actual synthesis~temperature since thermal gravimetric experiments tend to indicate that our sol was capable of combustion synthesis.