Sn0.9Si0.1/carbon core-shell nanoparticles for high-density lithium storage materials
Cited 36 times inCited 37 times in
- Sn0.9Si0.1/carbon core-shell nanoparticles for high-density lithium storage materials
- Kwon, Yoojung; Kim, Hansu; Doo, Seok-Gwang; Cho, Jaephil
- Annealing; Carbon; Comminution; Lithium; Particle size; Tin compounds
- Issue Date
- AMER CHEMICAL SOC
- CHEMISTRY OF MATERIALS, v.19, no.5, pp.982 - 986
- Sn0.9Si0.1 core/carbon shell nanoparticles, with the sizes of 16 and 10 nm, were prepared by annealing as-prepared butyl-capped Sn0.9Si0.1 particles with an average particle size of 1 μm. Even though as-prepared samples were severely encapsulated by butyl terminators, annealing led to pulverization of the bulky particles into core - shell nanoparticles with a shell thickness dependent on the annealing temperature. The core Sn0.9Si0.1 size was estimated to be constant at 6 nm, and the carbon shell thickness decreased from 10 to 4 nm with increasing annealing temperature from 600 to 700°C, respectively. In addition, the carbon shell was found to be more ordered at 700°C than at 600°C. Sn0.9Si0.1 core/carbon shell nanoparticles exhibited excellent lithium storage ability at a high current rate, resulting in a value of 964 mA·h/g at a rate of 0.3 C (1 C = 1200 mA/g), and demonstrated good capacity retention after 50 cycles.
- ; Go to Link
- Appears in Collections:
- ECHE_Journal Papers
- Files in This Item:
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.