 Antenna connector |
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| Method for sealing an electrochemical cell employing an improved reinforced cover assembly |
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| Composite and manufacturing method therefor |
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| Self-locking female receptor for electrical cord |
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| Aircraft battery |
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| Magnetic recording medium |
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| Piezoelectric buzzer |
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| Electrical connector for a microphone |
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| Electrical connector having LED device |
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Nonaqueous secondary battery
| Details |
Inventors: Miyaki, Yukio; Kabutomori, Masuo; Inoue, Noriyuki; Ishizuka, Hiroshi; Aono, Toshiaki; Kato, Mikihiko; Tomiyama, Hideki;
Assignee: Fuji Photo Film Co., Ltd. (Kanagawa, JP)
Primary Examiner: Brouillette; Gabrielle
Assistant Examiner: Crepeau; Jonathan
Attorney, Agent or Firm: Sughrue Mion, PLLC
A nonaqueous secondary battery comprising a positive electrode and a negative electrode both containing a material capable of reversibly intercalating and deintercalating lithium, a nonaqueous electrolyte containing a lithium salt, and a separator, which has at least one protective layer on the negative electrode and/or the positive electrode. The battery has a high discharge potential, satisfactory charge and discharge cycle characteristics, and high safety. |
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DETAILED DESCRIPTION The object of the present invention has been accomplished by the following nonaqueous secondary batteries.
(1) A nonaqueous secondary battery comprising a positive electrode and a negative electrode both containing a material capable of reversibly intercalating and deintercalating lithium, and a nonaqueous electrolyte containing a lithium salt, wherein at least one of the negative electrode and positive electrode has at least one protective layer containing at least one inorganic oxide selected from the group consisting of alumina, silicon dioxide and zirconia.
(2) A nonaqueous secondary battery comprising a positive electrode and a negative electrode both containing a material capable of reversibly intercalating and deintercalating lithium, and a nonaqueous electrolyte containing a lithium salt, wherein at least one of the negative electrode and positive electrode has at least one protective layer containing organic fine particles.
(3) A nonaqueous secondary battery comprising a positive electrode containing a material capable of reversibly intercalating and deintercalating lithium, a negative electrode containing at least one oxide selected from the group consisting of a metal or semimetal oxide belonging to the groups 13 to 15 of the Periodic Table which is capable of reversibly intercalating and deintercalating lithium, a nonaqueous electrolyte containing a lithium salt, and a separator, wherein at least one of the negative electrode and positive electrode has at least one protective layer.
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