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Synthesis and improved electrochemical performance of LiCo 1‐x Sn x O 2 (x= 0 to 0.1) powders
Author(s) -
Valanarasu S.,
Chandramohan R.
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200900706
Subject(s) - raman spectroscopy , analytical chemistry (journal) , electrochemistry , scanning electron microscope , materials science , diffraction , electrical resistivity and conductivity , conductivity , chemistry , optics , chromatography , physics , electrode , composite material , engineering , electrical engineering
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. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)