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    MATERIAL FOR CATHODE AND METHOD OF ITS MANUFACTURE
    3.
    发明公开
    MATERIAL FOR CATHODE AND METHOD OF ITS MANUFACTURE 失效
    材料用于生产阴极和方法

    公开(公告)号：EP0687022A4

    公开(公告)日：1996-09-11

    申请号：EP94903101

    申请日：1993-12-28

    Applicant: SONY CORP

    Inventor： IMOTO HIROSHI ,  OMARU ATSUO ,  AZUMA HIDETO ,  NISHI YOSHIO ,  GONNO YOSHIHISA ,  NAGAMINE MASAYUKI

    IPC: H01M4/1393 ,  H01M4/48 ,  H01M4/485 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/36

    CPC classification number: H01M4/587 ,  H01M4/1393 ,  H01M4/485 ,  H01M4/583 ,  H01M10/0525

    Abstract: A material for a cathode is made of a carbon material hard to turn to graphite and obtainable by burning a carbon precursor. For this carbon material having the graphitization resistance, the weight % Ps of carbon in the material is smaller than 0.59 or the stacking index SI is smaller than 0.76. This carbon has a structure of stacked layers, which is determined by the diffraction peak due to the (002) plane of the crystal lattice, and the X-ray diffraction spectrum on the side of an angle lower than the diffraction peak among the X-ray diffraction spectrum. The average Nave of the number of stacked layers is smaller than 2.46. Alternatively, letting the burning temperature be T °C, and the half-width of a peak appearing near 1,340 cm-1 in the Raman spectrum be HW, the following condition is satisfied: HW > 138-0.06 T. This carbon material is manufactured by thermally treating a carbon precursor by burining it in an inert gas atmosphere flown at a flow rate of 0.1 ml per minute or more per one gram of the carbon precursor at a temperature of 600 °C or high, or in an atmosphere pressurized at 50 kPa or less at a temperature of 600 °C or high. In this case, the carbon precursor is placed in a layer so that the contact area of the precursor with the atmosphere is 10 cm2 or more.

    4.
    发明专利
    未知

    公开(公告)号：DE60029516T2

    公开(公告)日：2007-02-15

    申请号：DE60029516

    申请日：2000-06-16

    Applicant: SONY CORP

    Inventor： YAMAGUCHI AKIRA ,  ITO HIDETOSHI ,  OMARU ATSUO ,  NAGAMINE MASAYUKI

    IPC: H01M10/05 ,  H01M4/587 ,  H01M6/10 ,  H01M6/16 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

    Abstract: A nonaqueous electrolyte battery having improved characteristics under a heavy load environment and incorporating nonaqueous electrolytic solution which contains vinylene carbonate in a proper quantity to improve conductivity of the nonaqueous electrolytic solution so that doping/dedoping of lithium ions is performed smoothly and, therefore, the internal resistance is decreased. Hence it follows that the initial capacity of the battery is enlarged and satisfactory heavy load characteristics are realized.

    5.
    发明专利
    未知

    公开(公告)号：DE60029516D1

    公开(公告)日：2006-09-07

    申请号：DE60029516

    申请日：2000-06-16

    Applicant: SONY CORP

    Inventor： YAMAGUCHI AKIRA ,  ITO HIDETOSHI ,  OMARU ATSUO ,  NAGAMINE MASAYUKI

    IPC: H01M10/05 ,  H01M4/587 ,  H01M6/10 ,  H01M6/16 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

    Abstract: A nonaqueous electrolyte battery having improved characteristics under a heavy load environment and incorporating nonaqueous electrolytic solution which contains vinylene carbonate in a proper quantity to improve conductivity of the nonaqueous electrolytic solution so that doping/dedoping of lithium ions is performed smoothly and, therefore, the internal resistance is decreased. Hence it follows that the initial capacity of the battery is enlarged and satisfactory heavy load characteristics are realized.

    6.
    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.

    9.
    发明专利
    未知

    公开(公告)号：DE69702293T2

    公开(公告)日：2000-12-21

    申请号：DE69702293

    申请日：1997-12-23

    Applicant: SONY CORP

    Inventor： OMARU ATSUO ,  NAGAMINE MASAYUKI ,  YAMAGUCHI AKIRA

    IPC: H01M10/05 ,  C01B31/02 ,  C01B31/04 ,  H01M4/48 ,  H01M4/52 ,  H01M4/525 ,  H01M4/587 ,  H01M6/16 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M10/40

    Abstract: A non-aqueous electrolyte secondary cell is disclosed wherein the irreversible capacity degradation which is caused under charging conditions is controlled. The non-aqueous electrolyte secondary cell includes a positive electrode capable to dope and dedope lithium, a negative electrode and an electrolyte which is dissolved in a non-aqueous solvent. The organic, non-aqueous solvent comprises from 0.005 M to 0.9 M of at least one monomethoxy benzene (anisole) or halogenated monomethoxy benzene compound (halogenated anisoles) with 1 to 4 halogen substituents. Preferred halogens are F,Cl and Br. Preferred examples of the organic co-solvent used in accordance with the instant invention are: Anisole 4-Fluoro-anisole, 4-Bromo-anisole, 4-Chloro-anisole, 2,4-Difluoro-anisole, 2,4-Dibromo-anisole, 2,4-Dichloro-anisole, 2,3,5,6-Tetrafluoro-anisole and 4-Chloro-2-Fluoro-anisole.

    10.
    发明专利
    未知

    公开(公告)号：DE69701126T2

    公开(公告)日：2000-06-21

    申请号：DE69701126

    申请日：1997-07-30

    Applicant: SONY CORP

    Inventor： OMARU ATSUO ,  NAKAJIMA NAOYUKI ,  NAGAMINE MASAYUKI

    IPC: H01M2/34 ,  H01M4/133 ,  H01M4/48 ,  H01M4/485 ,  H01M4/58 ,  H01M4/587 ,  H01M4/62 ,  H01M6/10 ,  H01M6/16 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/36 ,  H01M10/40

    Abstract: In a non-aqueous electrolyte secondary battery including anode and cathode consisting of material capable of doping/undoping of lithium, and non-aqueous electrolytic solution in which electrolyte is dissolved in non-aqueous solvent, flaky graphite having high crystallinity and high electron conductivity is added as conductive agent into the anode and the cathode. Further, granulated carbon or carbon black having specific material property is added as conductive agent in addition to the flaky graphite. Thus, non-aqueous electrolyte secondary battery having long cycle life time and high reliability can be obtained.

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