| US 7,455,936 B2 | ||
| Electric cell | ||
| Haruchika Ishii, Tokyo (Japan); Norio Takami, Kanagawa-ken (Japan); Tomokazu Morita, Chiba-ken (Japan); and Mitsuo Kasori, Kanagawa-ken (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Aug. 27, 2004, as Appl. No. 10/927,172. | ||
| Application 10/927172 is a continuation of application No. 09/964460, filed on Sep. 28, 2001, granted, now 6,790,563. | ||
| Claims priority of application No. 2000-300987 (JP), filed on Sep. 29, 2000; and application No. 2000-300994 (JP), filed on Sep. 29, 2000. | ||
| Prior Publication US 2005/0019672 A1, Jan. 27, 2005 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H01M 6/04 (2006.01); H01M 4/46 (2006.01) | ||
| U.S. Cl. 429—347 [429/199; 429/203; 429/204; 429/205; 429/207; 429/218.1] | 6 Claims |
| 1. An electric cell comprising a positive electrode, a negative electrode containing aluminum or aluminum alloy, and an electrolyte
arranged between the positive electrode and the negative electrode, wherein
the electrolyte includes:
at least one ion selected from the group consisting of a sulfate ion (SO42−) and a nitrate ion (NO3−), the concentration of the at least one ion being in the range of 0.2 to 16 M/L; and
an additive selected from the group consisting of an organic acid, a salt of the organic acid, a hydrate of the organic acid,
an ester of the organic acid, an ion of the organic acid, and derivatives thereof.
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