Anode properties of amorphous 50SiO center dot 50SnO powders synthesized by mechanical milling

Citation
H. Morimoto et al., Anode properties of amorphous 50SiO center dot 50SnO powders synthesized by mechanical milling, EL SOLID ST, 4(2), 2001, pp. A16-A18
Citations number
7
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHEMICAL AND SOLID STATE LETTERS
ISSN journal
1099-0062 → ACNP
Volume
4
Issue
2
Year of publication
2001
Pages
A16 - A18
Database
ISI
SICI code
1099-0062(200102)4:2<A16:APOA5C>2.0.ZU;2-O
Abstract
Amorphous 50SiO . 50SnO (mol %) powders were synthesized by mechanical mill ing treatment of starting materials SiO and SnO in a dry N-2 atmosphere at room temperature. The resultant powders were used in a rechargeable cell, L i/1 M LiPF6, ethylene carbonate+diethylene carbonate/50SiO . 50SnO. For the first discharge at a current density of 1.5 mA cm(-2), the high capacity o ver 800 mAh g(-1) was obtained for the potential range of 0 to 2.0 V vs. Li /Li+. This first discharge capacity of amorphous 50SiO . 50SnO powders was much larger than that of amorphous materials in the system SnO-B2O3-P2O5 ob tained by mechanical milling reported previously. In addition, irreversible capacity of the former was smaller than that of the latter. The amorphous 50SiO . 50SnO powders synthesized by mechanical milling treatments are one of the promising candidates as anode materials for lithium-ion secondary ba tteries. (C) 2001 The Electrochemical Society.