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    NON-AQUEOUS LIQUID ELECTROLYTE SECONDARY BATTERY
    41.
    发明专利
    NON-AQUEOUS LIQUID ELECTROLYTE SECONDARY BATTERY 未知

    公开(公告)号：CA2125003A1

    公开(公告)日：1994-12-04

    申请号：CA2125003

    申请日：1994-06-02

    Applicant: SONY CORP

    Inventor： OMARU ATSUO ,  NAGAMINE MASAYUKI ,  NAKAJIMA NAOYUKI

    IPC: H01M4/58 ,  H01M4/40

    Abstract: A non-aqueous liquid electrolyte secondary battery including an anode formed of a carbon material capable of dope and undope of lithium, a cathode formed of a lithium-containing transition metal composite oxide and a non-aqueous liquid electrolyte is disclosed. The carbon material for the anode contains graphite and a non-graphitic carbon material formed of at least a nongraphitizable carbon material or a graphitizable carbon material. The non-graphitic carbon material preferably exhibits a discharge capacity per gram 80% or more of that of the graphite, measured in the first cycle of intermittent charging and discharging. The non-graphitic carbon material exhibits a ratio of a discharge capacity up to 0.3 V to a discharge capacity up to 1.5 V which is not smaller than 0.5, measured in the first cycle of intermittent charging and discharging with a standard of a lithium potential. Specifically, the graphite has a true density of 2.1 g/cm3 or-greater, an interplanar distance of (002) of less than 0.340 nm found by X-ray diffraction, and a C-axis crystallite size of the (002) plane of 14.0 nm or greater. The non-graphitic carbon material has a true density of 1.70 g/cm3 or smaller, an interplanar distance of (002) plane of 0.37 nm or greater, and an exothermic peak observed at temperatures except 700.degree.C and higher temperatures in differential thermal analysis in an air stream. The non-aqueous liquid electrolyte is a liquid electrolyte formed by dissolving an electrolyte into a nonaqueous solvent containing ethylene carbonate.

    46.
    发明专利
    未知

    公开(公告)号：DE69839438D1

    公开(公告)日：2008-06-19

    申请号：DE69839438

    申请日：1998-07-15

    Applicant: SONY CORP

    Inventor： ATSUMI YOSHINORI ,  NAGAMINE MASAYUKI

    IPC: C01G23/00 ,  H01M4/485 ,  H01M10/05 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0566

    Abstract: Hydrogen lithium titanate prepared by an acid process of lithium titanate and having pH of 11.2 or smaller or hydrogen lithium titanate expressed by general formula HxLiy-xTizO4 (where y ≥ x > 0, 0.8 ≤ y ≤ 2.7 and 1.3 ≤ z ≤ 2.2) is disclosed. Hydrogen lithium titanate may be employed as active materials of positive and negative electrodes of a non-aqueous electrolyte secondary battery thereby realizing a charging capacity greater than a theoretical capacity. It is preferable that hydrogen lithium titanate is formed into a particle shape and includes voids in the particles. It is preferable that the largest particle size is 0.1 mu m to 50 mu m and the specific surface area is 0.01 m /g to 300 m /g. Lithium titanate of the foregoing type can be manufactured by bringing lithium titanate into contact with an acid such as acetic acid to substitute protons for lithium ions.

    NON-AQUEOUS LIQUID ELECTROLYTE SECONDARY BATTERY
    47.
    发明专利
    NON-AQUEOUS LIQUID ELECTROLYTE SECONDARY BATTERY 未知

    公开(公告)号：CA2125003C

    公开(公告)日：2005-08-09

    申请号：CA2125003

    申请日：1994-06-02

    Applicant: SONY CORP

    Inventor： OMARU ATSUO ,  NAGAMINE MASAYUKI ,  NAKAJIMA NAOYUKI

    IPC: H01M4/58 ,  H01M4/40

    Abstract: A non-aqueous liquid electrolyte secondary battery including an anode formed of a carbon material capable of dope and undope of lithium, a cathode formed of a lithium-containing transition metal composite oxide and a non-aqueous liquid electrolyte is disclosed. The carbon material for the anode contains graphite and a non-graphitic carbon material formed of at least a non-graphitizable carbon material or a graphitizable carbon material. The non-graphitic carbon material preferably exhibits a discharge capacity per gram 80% or more of that of the graphite, measured in the first cycle of intermittent charging and discharging. The non-graphitic carbon material exhibits a ratio of a discharge capacity up to 0.3 V to a discharge capacity up to 1.5 V which is not smaller than 0.5, measured in the first cycle of intermittent charging and discharging with a standard of a lithium potential. Specifically, the graphite has a true density of 2.1 g/cm3 or greater, an interplanar distance of (002) of less than 0.340 nm found by X-ray diffraction, and a C-axis crystallite size of the (002) plane of 14.0 nm or greater. The non-graphitic carbon material has a true density of 1.70 g/cm3 or smaller, an interplanar distance of (002) plane of 0.37 nm or greater, and an exothermic peak observed at temperatures except 700.degree.C and higher temperatures in differential thermal analysis in an air stream. The non-aqueous liquid electrolyte is a liquid electrolyte formed by dissolving an electrolyte into a non-aqueous solvent containing ethylene carbonate.

    48.
    发明专利
    未知

    公开(公告)号：DE69729055T2

    公开(公告)日：2005-04-28

    申请号：DE69729055

    申请日：1997-06-27

    Applicant: SONY CORP

    Inventor： OMARU ATSUO ,  NAKAJIMA NAOYUKI ,  NAGAMINE MASAYUKI

    IPC: H01M4/587 ,  D01F9/12 ,  D01F9/15 ,  D01F11/12 ,  H01M4/02 ,  H01M4/04 ,  H01M4/133 ,  H01M4/38 ,  H01M6/16 ,  H01M10/0525 ,  H01M10/0566 ,  H01M4/58

    Abstract: Value of fractal dimension of cross section high order structure of random radial type carbon fiber can be utilized as material parameter for evaluating the cross sectional structure. Carbon fiber in which the value of the fractal dimension is caused to fall within the range from 1.1. to 1.8 and the crystallinity has been controlled such that it falls within reasonable range is used as anode material for non-aqueous electrolyte lithium ion secondary battery. Further, carbon fiber having cross section high order structure such that the central portion is radial type structure and the surface layer portion is random radial type structure is used as anode material for improved non-aqueous electrolyte Li-ion secondary battery.

    NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY
    49.
    发明专利
    NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY 未知

    公开(公告)号：CA2190229C

    公开(公告)日：2005-02-01

    申请号：CA2190229

    申请日：1996-11-13

    Applicant: SONY CORP

    Inventor： OMARU ATSUO ,  YAMAGUCHI AKIRA ,  NAGAMINE MASAYUKI

    IPC: H01M2/02 ,  H01M4/58 ,  H01M6/10 ,  H01M6/16 ,  H01M10/36

    Abstract: A nonaqueous-electrolyte secondary battery has an electrode assembly having positive and negative electrodes separated from each other by a porous resin separator, and a battery case having a side wall with at least one land projecting inwardly into the battery case or outwardly out of the battery case, the electrode assembly being disposed in the battery case. Alternatively, the battery case may have a plurality of walls and a plurality of round corners each joining adjacent two of the walls.

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