Nanostructured Sn-C composite electrodes have been used as an advanced anode material in high performance lithium-ion batteries. During the calcination step, the gel is carbonized, whereas the organic tin precursor is reduced to metallic tin. This procedure produces a gray material with a nominal Sn/C composition of 1:1, formed by tin nanoparticles highly dispersed in the carbon matrix. The average particle size of the tin was evaluated to be 32.8 nm by Rietveld refinement, in with the average value revealed by the TEM analysis. This unique morphology is expected to prove an excellent mechanical integrity to the Sn-C composite material, a key feature in view of its application as an electrode in a lithium battery.
Nanostructured Sn-C composite as an advanced anode material in high-performance lithium-ion batteries
HASSOUN, Jusef;
2007
Abstract
Nanostructured Sn-C composite electrodes have been used as an advanced anode material in high performance lithium-ion batteries. During the calcination step, the gel is carbonized, whereas the organic tin precursor is reduced to metallic tin. This procedure produces a gray material with a nominal Sn/C composition of 1:1, formed by tin nanoparticles highly dispersed in the carbon matrix. The average particle size of the tin was evaluated to be 32.8 nm by Rietveld refinement, in with the average value revealed by the TEM analysis. This unique morphology is expected to prove an excellent mechanical integrity to the Sn-C composite material, a key feature in view of its application as an electrode in a lithium battery.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
