Synthesis and improved electrochemical performance of LiCo1-xSnxO2 (x= 0 to 0.1) powders

✍ Scribed by S. Valanarasu; R. Chandramohan

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 191 KB
• Volume: 45
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.200900706

✦ Synopsis

Layered intercalation compounds LiCo 1-x Sn x O 2 (x= 0 to 0.1) have been prepared using a simple combustion route method. X-ray diffraction patterns and Laser Raman spectrum suggest that the synthesized materials had the R-3m structure. Scanning electron images show that particles are well-crystallized with a size distribution in the range of 50-100 nm. The room temperature electrical conductivity of the sample increased with Sn content. For LiCo 1-x Sn x O 2 (x = 0, 0.01, 0.03, 0.05 and 0.1), the first discharge capacity increased with increase in Sn content. Among these samples, LiCo 0.95 Sn 0.05 O 2 had produced the best performance of all others with a stable reversible capacity of 186 mAhg -1 after 30 cycles.