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    1.
    发明专利
    未知

    公开(公告)号：DE69205542T3

    公开(公告)日：2001-06-07

    申请号：DE69205542

    申请日：1992-04-24

    Applicant: SONY CORP

    Inventor： YAMAMOTO YOSHIKATSU ,  FUJITA SHIGERU ,  KATO HISAYUKI

    IPC: H01M2/34 ,  H01M4/52 ,  H01M4/525 ,  H01M10/052 ,  H01M10/36 ,  H01M10/42 ,  H01M10/40 ,  H01M4/58

    Abstract: A nonaqueous electrolyte secondary battery in which, using Li x MO (where M is at least one of transition metals, preferably Co or Ni, and 0.05 & X & 1.10) as a positive electrode active material, the charge and discharge of the battery are performed by doping and dedoping lithium. The battery is provided with a means for shutting off current, which operates with the increase of the pressure of the inside of the battery. The means for shutting off current is operated surely by adding lithium carbonate to the positive electrode active material and by covering a part of the surface of the positive electrode with lithium carbonate. The quantity of lithium carbonate is 0.5-15 wt %, and the specific surface area is preferably 0.1 m /g or more.

    2.
    发明专利
    未知

    公开(公告)号：DE60103322T2

    公开(公告)日：2005-06-02

    申请号：DE60103322

    申请日：2001-03-29

    Applicant: SONY CORP

    Inventor： TSUJIMOTO HISASHI ,  YAMAMOTO YOSHIKATSU ,  KUYAMA JUNJI ,  NAGAMINE MASAYUKI ,  OMARU ATSUO ,  TANIZAKI HIROAKI

    IPC: H01M4/02 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/50 ,  H01M4/505 ,  H01M4/52 ,  H01M4/525 ,  H01M4/58 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0587 ,  H01M10/36

    Abstract: Disclosed is a non-aqueous electrolyte secondary battery having an excellent preservation characteristic at a high temperature and charging/discharging cycle characteristic. A rolled body in which a strip-shape positive electrode and negative electrode are rolled with a separator in-between is provided inside a battery can. The positive electrode contains LixMn2-yMayO4 (where, Ma is at least one element selected from the group consisting of metal elements other than Mn, and B) and LiNi1-zMbzO2 (where, Mb is at least one element selected from the group consisting of metal elements other than Ni, and B). By replacing part of Mn and Ni with other elements, the crystal structure can be stabilized. Thereby, the capacity retention ratio after preservation at a high temperature, and a heavy load discharging power under a high electric potential cutoff can be improved. The mean particle size of particles of the above-mentioned oxides are preferable to be 30 mu m and below so that an excellent charging/discharging cycle characteristic can be obtained.

    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    6.
    发明公开
    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开
    NICHTWÄSSRIGEELEKTROLYT-SEKUNDÄRBATTERIE

    公开(公告)号：EP0932212A4

    公开(公告)日：2000-10-25

    申请号：EP98936743

    申请日：1998-08-11

    Applicant: SONY CORP

    Inventor： TSUJIMOTO HISASHI ,  YAMAHIRA TAKAYUKI ,  YAMAMOTO YOSHIKATSU

    IPC: H01M4/58 ,  H01M4/62 ,  H01M10/40

    CPC classification number: H01M4/622 ,  H01M4/587 ,  H01M4/621 ,  H01M4/623 ,  H01M10/0525

    Abstract: A nonaqueous electrolyte secondary battery is manufactured which contains a binder for powder in a negative electrode thereof, the binder being a mix of fluorine polymer and aromatic vinyl-conjugate diene polymer. The weight mixture ratio of fluorine polymer and the aromatic vinyl-conjugate diene polymer is such that fluorine polymer is not less than one time nor more than 99 times the aromatic vinyl-conjugate diene polymer. The ratio of binder for powder with respect to the negative electrode is not less than 2 wt% nor more than 15 wt%. It is preferable that the binder for powder contains cellulose derivative as a viscosity bodying agent.

    Abstract translation: 制造含有负极中的粉末用粘合剂的非水电解质二次电池，粘合剂为氟聚合物和芳香族乙烯基共轭二烯系聚合物的混合物。 氟聚合物和芳香族乙烯基共轭二烯聚合物的重量混合比例使得氟聚合物不少于芳族乙烯基 - 共轭二烯聚合物的一倍，也不超过99倍。 粉末粘合剂相对于负极的比例不小于2重量％，也不大于15重量％。 优选粉末粘合剂含有纤维素衍生物作为粘稠剂。

    7.
    发明专利
    未知

    公开(公告)号：DE60103322D1

    公开(公告)日：2004-06-24

    申请号：DE60103322

    申请日：2001-03-29

    Applicant: SONY CORP

    Inventor： TSUJIMOTO HISASHI ,  YAMAMOTO YOSHIKATSU ,  KUYAMA JUNJI ,  NAGAMINE MASAYUKI ,  OMARU ATSUO ,  TANIZAKI HIROAKI

    IPC: H01M4/02 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/50 ,  H01M4/505 ,  H01M4/52 ,  H01M4/525 ,  H01M4/58 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0587 ,  H01M10/36

    Abstract: Disclosed is a non-aqueous electrolyte secondary battery having an excellent preservation characteristic at a high temperature and charging/discharging cycle characteristic. A rolled body in which a strip-shape positive electrode and negative electrode are rolled with a separator in-between is provided inside a battery can. The positive electrode contains LixMn2-yMayO4 (where, Ma is at least one element selected from the group consisting of metal elements other than Mn, and B) and LiNi1-zMbzO2 (where, Mb is at least one element selected from the group consisting of metal elements other than Ni, and B). By replacing part of Mn and Ni with other elements, the crystal structure can be stabilized. Thereby, the capacity retention ratio after preservation at a high temperature, and a heavy load discharging power under a high electric potential cutoff can be improved. The mean particle size of particles of the above-mentioned oxides are preferable to be 30 mu m and below so that an excellent charging/discharging cycle characteristic can be obtained.

    8.
    发明专利
    未知

    公开(公告)号：DE69408286T2

    公开(公告)日：1998-08-27

    申请号：DE69408286

    申请日：1994-10-26

    Applicant: SONY CORP

    Inventor： YAMAMOTO YOSHIKATSU

    IPC: H01M10/05 ,  C01B31/02 ,  C01B31/04 ,  H01M4/525 ,  H01M4/52 ,  H01M4/48

    Abstract: In a method of producing active cathode material for lithium secondary battery according to this invention, mixture of lithium salt and transition metal salt is baked in oxygen atmosphere, and in synthesizing lithium transition metal compound oxide having composition of LixNiyM1-yO2 (M is one kind of transition metal or more, and x and y are respectively expressed as 0.05

    9.
    发明专利
    未知

    公开(公告)号：DE69408286D1

    公开(公告)日：1998-03-05

    申请号：DE69408286

    申请日：1994-10-26

    Applicant: SONY CORP

    Inventor： YAMAMOTO YOSHIKATSU

    IPC: H01M10/05 ,  C01B31/02 ,  C01B31/04 ,  H01M4/525 ,  H01M4/52 ,  H01M4/48

    Abstract: In a method of producing active cathode material for lithium secondary battery according to this invention, mixture of lithium salt and transition metal salt is baked in oxygen atmosphere, and in synthesizing lithium transition metal compound oxide having composition of LixNiyM1-yO2 (M is one kind of transition metal or more, and x and y are respectively expressed as 0.05

    10.
    发明专利
    未知

    公开(公告)号：DE69205542T2

    公开(公告)日：1996-08-14

    申请号：DE69205542

    申请日：1992-04-24

    Applicant: SONY CORP

    Inventor： YAMAMOTO YOSHIKATSU ,  FUJITA SHIGERU ,  KATO HISAYUKI

    IPC: H01M2/34 ,  H01M4/52 ,  H01M4/525 ,  H01M10/052 ,  H01M10/36 ,  H01M10/42 ,  H01M10/40 ,  H01M4/58

    Abstract: A nonaqueous electrolyte secondary battery in which, using Li x MO (where M is at least one of transition metals, preferably Co or Ni, and 0.05 & X & 1.10) as a positive electrode active material, the charge and discharge of the battery are performed by doping and dedoping lithium. The battery is provided with a means for shutting off current, which operates with the increase of the pressure of the inside of the battery. The means for shutting off current is operated surely by adding lithium carbonate to the positive electrode active material and by covering a part of the surface of the positive electrode with lithium carbonate. The quantity of lithium carbonate is 0.5-15 wt %, and the specific surface area is preferably 0.1 m /g or more.

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