A New Method for the Preparation of Fine-Grained SnO2and WO3Powders: Influence of the Crystallite Size on the Electrochemical Insertion of Li+in SnO2and WO3Electrodes

S. D. Han, G. Campet, S. Y. Huang, M. C.R. Shastry, J. Portier, J. C. Lassègues, H. S. Dweik
1995 Active and Passive Electronic Components  
We propose an unconventional method to obtain fine-grained SnO2and WO3powders. It uses as precursors, polymer complexes between polyethylene oxide (POE) and SnCl4or WCl6respectively. By pyrolysis of these complexes in the 350-550℃ temperature range, metal-oxide powders possessing small crystallite sizes are obtained. They are free from water and hydroxyl group contaminations, which is an added advantage where the application of these materials to Li-batteries is concerned. We have, indeed,
more » ... have, indeed, demonstrated that these powders show good ability to insert reversibly lithium ions in the Li/ Li+/SnO2(WO3) cells.
doi:10.1155/1995/79465 fatcat:rtrmtsj7u5axhmkm2v2fpunoty