| US 7,556,887 B2 | ||
| Nonaqueous electrolyte secondary battery with negative electrode having a La3Co2Sn7 type crystal structure | ||
| Shinsuke Matsuno, Kashiwa (Japan); Tatsuoki Kohno, Tokyo (Japan); Takao Sawa, Yokohama (Japan); Fumiyuki Kawashima, Matsudo (Japan); and Norio Takami, Yokohama (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Dec. 16, 2004, as Appl. No. 11/12,189. | ||
| Claims priority of application No. 2004-084498 (JP), filed on Mar. 23, 2004; and application No. 2004-342420 (JP), filed on Nov. 26, 2004. | ||
| Prior Publication US 2005/0214643 A1, Sep. 29, 2005 | ||
| Int. Cl. H01M 4/58 (2006.01); H01M 4/00 (2006.01) | ||
| U.S. Cl. 429—218.1 [429/231.5; 429/220; 429/223; 429/224; 429/231.6] | 19 Claims |
| 1. A nonaqueous electrolyte secondary battery, comprising:
a case;
a nonaqueous electrolyte provided in the case;
a positive electrode provided in the case and capable of absorbing-releasing Li; and
a negative electrode provided in the case and comprising an alloy that has a La3Co2Sn7 type crystal structure.
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