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    NON-AQUEOUS SECONDARY BATTERY
    12.
    发明专利
    NON-AQUEOUS SECONDARY BATTERY 失效

    公开(公告)号：JPH08138649A

    公开(公告)日：1996-05-31

    申请号：JP27487294

    申请日：1994-11-09

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUDA YOSHIO ,  TSUKAMOTO JUN

    IPC: H01M10/05 ,  H01M4/131 ,  H01M4/137 ,  H01M4/485 ,  H01M4/525 ,  H01M4/587 ,  H01M4/60 ,  H01M4/02 ,  H01M4/58 ,  H01M10/40

    Abstract: PURPOSE: To provide a secondary battery with large capacity by making a positive electrode, at least the part of which is coated with an electrolytic oxide film, have a specified value of a bulk density of higher. CONSTITUTION: About 0.01-5.0mol/liter concentration of a substance (e.g. acrylonitrile, phenol, aniline, pyrrole, etc.) which can form an electrolytic oxide film is added to an electrolytic liquid and after the assembly of a battery, the battery is charged and discharged one time. As a result, the initial capacity loss of the negative electrode is solved and a secondary battery with high energy can be obtained. The weight ratio of the electrolytic oxide film in the positive electrode is preferably 5-10 pts. by wt. and in the case the weight ratio is less than 1 pts. by wt., the conpensating effect is too small and in the case the weight ratio is more than 20 pts. by wt., the positive material may be cracked at the time of polymerization and peeled out of an electric collector. The bulk density of the positive electrode should be 2.2g/cm or higher.

    ELECTRODE AND SECONDARY BATTERY USING THIS ELECTRODE
    14.
    发明专利
    ELECTRODE AND SECONDARY BATTERY USING THIS ELECTRODE 失效

    公开(公告)号：JPH06290771A

    公开(公告)日：1994-10-18

    申请号：JP7207893

    申请日：1993-03-30

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUDA YOSHIO ,  NAKAE TAKEJI ,  TSUKAMOTO JUN

    IPC: H01M4/131 ,  H01M4/133 ,  H01M4/525 ,  H01M4/587 ,  H01M10/05 ,  H01M4/02 ,  H01M4/58 ,  H01M10/40

    Abstract: PURPOSE:To facilitate fitting an electrode material to a secondary battery by coating the electrode material with a porous ion transmitting film made flexible so as to facilitate handling the material. CONSTITUTION:A separator, which is a porous film of using a material of polyolefine or the like further with an ion permeating film consisting of ion conductivity into 200mum or less film thickness, is covered on an electrode material by a dry or wet method. Thus by providing a flexible shape and preventing loosening of an electrode material fiber in the case of fitting the electrode material to a secondary battery, handling an electrode can be facilitated to be matched with the separator and a positive pole.

    ELECTRODE AND SECONDARY BATTERY USING IT
    15.
    发明专利
    ELECTRODE AND SECONDARY BATTERY USING IT 失效

    公开(公告)号：JPH06140045A

    公开(公告)日：1994-05-20

    申请号：JP28744092

    申请日：1992-10-26

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUDA YOSHIO ,  TSUKAMOTO JUN

    IPC: H01M4/131 ,  H01M4/133 ,  H01M4/36 ,  H01M4/525 ,  H01M4/587 ,  H01M4/70 ,  H01M10/05 ,  H01M10/0568 ,  H01M4/02 ,  H01M4/58 ,  H01M10/40

    Abstract: PURPOSE:To increase adhesive strength between a current collecting body and an electrode active material, and improve a charging and discharging cycle characteristic by fixing the electrode active material composed of a carbonaceous material on the current collecting body whose current collecting body surface is formed in a rough surface. CONSTITUTION:Polyvinylidene fluoride is mixed as a binder into a material formed by pulverizing coal pitch coke by a ball mill, and N-methylpyrrolidone is added, and is formed in a slurry shape. This slurry is applied on a copper foil whose surface is formed in a rough surface beforehand by rubbing it by an emery paper, after it is dried, an electrode is formed by press. A lithium metal foil is used in a positive electrode to this negative electrode, and electrolyte formed by dissolving perchloric acid lithium into propylene carbonate is used, and a battery is formed. In this way, since the current collecting body surface is formed in the rough surface, adhesive strength of an electrode active material and a current collecting body can be increased, and a charging and discharging cycle characteristic of the battery can be improved.

    METHOD FOR CORRECTING DRIFT OF ELECTROMOTIVE FORCE OF CARBON DIOXIDE SENSOR
    16.
    发明专利
    METHOD FOR CORRECTING DRIFT OF ELECTROMOTIVE FORCE OF CARBON DIOXIDE SENSOR 失效

    公开(公告)号：JPH04355359A

    公开(公告)日：1992-12-09

    申请号：JP13112591

    申请日：1991-06-03

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUDA YOSHIO ,  KAWAKITA SUSUMU ,  JINNO SHIGERU

    IPC: G01N27/416 ,  G01N27/406

    Abstract: PURPOSE:To obtain an accurate and stable measured result enhanced in reliability by correcting the drift of the electromotive force generated in a carbon dioxide sensor during the continuous measurement of gas to be inspected. CONSTITUTION:A drift correcting circuit 14 correcting the drift of the electromotive force generated in a carbon dioxide sensor 10 during the measurement of gas to be inspected containing carbon dioxide is provided. By adjusting a variable resistor R so that a measuring current I3 satisfies I3=EXR4/R3R5, even when the concn. of carbon dioxide in the gas to be inspected changes and the generated electromotive force E of the sensor 10 changes in proportion thereto, the sensor is operated so that the current I1 flowing to a series resistor R1 always holds a condition I1=0 for preventing the accumulation of a sodium ion.

    CARBON DIOXIDE SENSOR
    17.
    发明专利
    CARBON DIOXIDE SENSOR 失效

    公开(公告)号：JPH0299854A

    公开(公告)日：1990-04-11

    申请号：JP25210888

    申请日：1988-10-07

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUDA YOSHIO ,  SHIMONO MASARU ,  JINNO SHIGERU

    IPC: G01N27/406 ,  G01N27/416

    Abstract: PURPOSE:To enable the realization of a small and inexpensive sensor by measuring the concentration of carbon dioxide to be inspected using an Na conducting solid electrolyte by a direct interpolation formula to secure a high accuracy and a high stability. CONSTITUTION:An electrically insulating material 1 is a tubular body with both ends thereof opened and a heating element 6 is arranged on an outer surface thereof while an anode electrode 4 on the inner surface thereof. A block of an Na conducting solid electrolyte is inserted into a hollow part of the insulating material so as not to contact the inner surface thereof directly. The electrolyte 2 has a cathode electrode 3 formed at one end 2b thereof and a layer 5 of Na2CO3 is provided to bridge between the other end thereof and the electrode 4. When a gas to be inspected having carbon dioxide contacts this sensor, an electromotive force is generated between the electrodes 3 and 4 in proportion to the concentration of the carbon dioxide (partial pressure). If a relationship between the gas and the electromotive force is prepared by a calibration curve, the concentration of carbon dioxide in the gas to be inspected can be learned from the electromotive force when the sensor is inserted into the gas to be inspected. Thus, the electrolyte 2 and the electrode 4 are so arranged as not to contact each other directly, thereby achieving a higher accuracy and stability.

    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    19.
    发明专利
    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 失效

    公开(公告)号：JPH11144765A

    公开(公告)日：1999-05-28

    申请号：JP30872997

    申请日：1997-11-11

    Applicant: TORAY INDUSTRIES

    Inventor： ADACHI MASAYA ,  MATSUDA YOSHIO

    IPC: H01M10/05 ,  H01M4/13 ,  H01M4/525 ,  H01M10/04 ,  H01M10/052 ,  H01M10/0566 ,  H01M10/0587 ,  H01M10/40 ,  H01M4/02 ,  H01M4/58

    Abstract: PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery, which can lower or prevent the generation of bursting and firing of the battery, even in the case where a physical impact is applied to a battery can in charging condition. SOLUTION: A nonaqueous electrolyte secondary battery has a wound electrode body, which is formed by winding a positive electrode sheet containing the positive electrode active material and a negative electrode sheet containing the negative electrode active material opposite to each other through a separator and of which peripheral part is formed, so that an exposed metal 3 having an equal electrical potential with the positive electrode and an exposed metal having an equal electrical potential with the negative electrode are arranged opposite to each other over a length of one circumference or more and that the inner surface of a battery can as a negative electrode and at least one part of the exposed metal part having the equal electrical potential with the positive electrode are arranged opposite to each other. In this nonaqueous electrolyte secondary battery, a negative electrode lead 4 is provided in a range within 30 mm inside from a tip of the exposed metal 2 having the equal electrical potential with the negative electrode.

    BATTERY ELECTRODE AND BATTERY USING IT
    20.
    发明专利
    BATTERY ELECTRODE AND BATTERY USING IT 失效

    公开(公告)号：JPH1186844A

    公开(公告)日：1999-03-30

    申请号：JP26156797

    申请日：1997-09-26

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUDA YOSHIO ,  NAKAE TAKEJI ,  ADACHI MASAYA ,  TAKANISHI KEIJIRO ,  INOUE GAKUJI ,  TSUKAMOTO JUN ,  SHIMOYAMA NAOKI ,  IWASAKI NAOKI

    IPC: H01M10/05 ,  H01M4/13 ,  H01M4/525 ,  H01M4/587 ,  H01M4/80 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/0587 ,  H01M4/02 ,  H01M4/58 ,  H01M10/40

    Abstract: PROBLEM TO BE SOLVED: To provide an electrode superior in handling property and having high capacity, high output characteristic, good cycle characteristic, and high safety by integrally forming an electrically insulating fine porous film, having specific strength and elastic modulus on an electrode substrate by the wet coagulation method. SOLUTION: A fine porous film made mainly of a thermoplastic resin is integrally provided on an electrode substrate provided with an active material made of a lithium composite oxide or a carbon material on a conductive material via a binder. A fluorine-containing polymer containing α-polyvinylidene fluoride 40 wt.% or above and/or a sulfur-containing polymer is preferably used for this thermoplastic resin. The fine porous film is made of a wet coagulation paint film with the thickness of about 200 μm or below, having a strength of 0.1-10 MPa, preferably 0.5-2 MPa, an elastic modulus of 10-200 MPa, preferably 10-100 MPa, the median diameter of the fine bore diameter of 40-1500 mm, and the porosity of 40-90%, preferably 65-90%.

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