Title:
非水電解液二次電池用負極
Document Type and Number:
Japanese Patent JP4944648
Kind Code:
B2
Abstract:
A negative electrode 10 for a nonaqueous secondary battery has an active material layer 12 containing active material particles 12a. The particles 12a are coated at least partially with a coat of a metallic material 13 having low capability of lithium compound formation. The active material layer 12 has voids formed between the metallic material-coated particles 12a. When the active material layer 12 is imaginarily divided into equal halves in its thickness direction, the amount of the metallic material 13 is smaller in the half closer to the negative electrode surface than in the other half farther from the negative electrode surface. The weight ratio of [the particles/the metallic material] in the half closer to the negative electrode surface is preferably higher than that in the other half farther from the negative electrode surface.
Inventors:
Yoshihiko Ide
Akihiro Moedoki
Hideaki Matsushima
Daisuke Mukai
Kiyotaka Yasuda
Akihiro Moedoki
Hideaki Matsushima
Daisuke Mukai
Kiyotaka Yasuda
Application Number:
JP2007069923A
Publication Date:
June 06, 2012
Filing Date:
March 19, 2007
Export Citation:
Assignee:
Mitsui Mining & Smelting Co., Ltd.
International Classes:
H01M4/13; H01M4/02; H01M4/139; H01M4/36; H01M4/62; H01M10/05; H01M10/052; H01M10/0566
Domestic Patent References:
| JP2004241329A | ||||
| JP2004296412A | ||||
| JP2005285581A | ||||
| JP2002231224A | ||||
| JP2000012091A | ||||
| JP11242954A |
Attorney, Agent or Firm:
Osamu Hatori
Yoshiyuki Matsushima
Yoshiyuki Matsushima