H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/02 (2006.01) H01M 4/38 (2006.01) H01M 4/66 (2006.01) H01M 10/40 (2006.01)
Patent
CA 2421498
An electrode having a current collector and, formed thereon, a thin film comprising an active material, characterized in that a thin alloy film (such as Sn-Co) comprising a metal which can form an alloy with lithium (such as Sn) and a metal which can not form an alloy with lithium (such as Co) is formed on a current collector such as a copper foil. It is preferred that the above metal which can form an alloy with lithium and the above metal which can not form an alloy with lithium can not form an intermetallic compound with each other.
L'invention concerne une électrode pourvue d'un collecteur de courant sur laquelle est formée une couche mince comprenant un matériau actif. Ce film en alliage mince (tel que Sn-Co) est caractérisé en ce qu'il comprend un métal permettant de former un alliage avec le lithium (tel que Sn) et un métal ne permettant pas de former un alliage avec le lithium (tel que Co), ces métaux étant formés sur un collecteur de courant, tel qu'une feuille de cuivre. Selon l'invention, il est préférable que le métal permettant de former un alliage avec le lithium et le métal ne permettant pas de former un alliage avec le lithium ne forment pas un composé intermétallique entre eux.
Fujimoto Masahisa
Fujitani Shin
Jito Daizo
Kamino Maruo
Nakamizo Shiori
G. Ronald Bell & Associates
Sanyo Electric Co. Ltd.
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