リチウム2次電池用負極材料 - jx Nippon Mining & Metals Co., Ltd.

Title:

リチウム2次電池用負極材料

Document Type and Number:

Japanese Patent JP4653510

Kind Code:

B2

Abstract:

To provide a negative electrode material for lithium secondary battery which can prevent separation of the coating containing Sn-Cu or Sn-Cu alloy intermetallic compound from the current collector by absorbing and relaxing stress generated at expansion and shrinking of the negative electrode at charge and discharge and which is improved in charge and discharge cycle characteristics.

This is a negative electrode material for lithium secondary battery having a coating layer at the current collector, and the coating layer is a granular rough plated film of Cu formed on the current collector and an Sn alloy plated film having a minute convex shape part including at least a curved face portion formed on top of it.

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Inventors:

Yoshitaka Shibuya
Junji Honda
Nakai Yasushi
Yoshihiro Chiba
Maruo Kamino
Yoshiyuki Tamura

Application Number:

JP2005031242A

Publication Date:

March 16, 2011

Filing Date:

February 08, 2005

Export Citation:

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Assignee:

jx Nippon Mining & Metals Co., Ltd.
Sanyo Electric Co., Ltd.

International Classes:

H01M4/134; C22C9/00; C22C9/06; C22C13/00; C22F1/00; C22F1/08; H01M4/02; H01M4/1395; H01M4/38; H01M4/66; H01M10/05

Domestic Patent References:

JP2003007305A
JP2004178970A
JP2004220871A
JP2002279972A
JP2003157833A
JP2002313319A
JP2002319408A
JP2004111329A

Attorney, Agent or Firm:

Masami Sakai
Norio Kagami
Jun Komatsu
Hidetake Komatsu

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