NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

    公开(公告)号:JPH11154512A

    公开(公告)日:1999-06-08

    申请号:JP33666397

    申请日:1997-11-21

    Abstract: PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery that can improve its reliability during high temperature storage by using a composite oxide, as a positive electrode active material, in which the content of sulfur is not more than 4000 ppm and which includes lithium and manganese. SOLUTION: In a nonaqueous electrolyte secondary battery that includes a negative electrode active material capable of occluding and effusing lithium ions, a lithium ion conductive nonaqueous electrolyte and a positive electrode active material formed from a lithium containing metal oxide capable of occluding and effusing lithium ions, this nonaqueous electrolyte secondary battery is characterized by such features that the lithium containing metal oxide is a composite oxide including spinel group lithium and manganese that is expressed by a general formula, Li[Lix Mn2-x ]O4 , where the value x is in the range of 0

    NON-AQUEOUS ELECTROLYTIC SECONDARY BATTERY

    公开(公告)号:JPH10302795A

    公开(公告)日:1998-11-13

    申请号:JP34363397

    申请日:1997-12-01

    Abstract: PROBLEM TO BE SOLVED: To provide a non aqueous electrolytic secondary battery which comprises lithium manganese oxide as a cathode, whose performance is not greatly deteriorated even after being exposed to a high temperature, and whose shelf life characteristics are excellent. SOLUTION: This non-aqueous electrolytic secondary battery comprises an anode which can absorb and desorb lithium ion, a cathode made of a lithiumcontaining metal oxide which can absorb and desorb lithium ion, and a lithium ion conductive non-electrolytic substance. In this case, a spinel lithium manganese oxide having 3000 ppm or lower sulfur content and 4000 ppm or lower saturated water content by controlling the specific surface area to be less than 1.4 m /g is used as the lithium containing metal oxide.

    4.
    发明专利
    失效

    公开(公告)号:JPH05304009A

    公开(公告)日:1993-11-16

    申请号:JP11048892

    申请日:1992-04-28

    Abstract: PURPOSE:To obtain the title magnetic resin composite material having a high magnetic field orientational property and a high oxidation-resistant property by a method wherein the magnetic resin composite material is composed of the specific wt.% of rare earth-iron base nitride magnetic powder, a lubricant, a coupling agent and thermosetting resin. CONSTITUTION:The title magnetic resin composite material is composed of rare earth-iron base nitrogen magnetic powder, in the range of composition showing, ferromagnetism, of 84 to 99.5 wt.%, a lubricant, containing one or two or more kinds selected from fatty acids, amines, fatty acid salts, and fatty acid amides of 0.10 to 5wt.%, a coupling agent, containing at least a kind selected from titanaium and silicon, of 0 to 5wt.% and thermosetting resin, containing one or two or more kinds selected from epoxy resin, epoxy denatured phenol non-saturated polyester resin, of 0.2 to 15wt.%. As a result, excellent magnetic resin composite material, having both magnetic field orientational property and an oxidation-resistant property, can be obtained.

    POLYMER COMPOSITION CONTAINING LIQUID CRYSTAL

    公开(公告)号:JPH04304238A

    公开(公告)日:1992-10-27

    申请号:JP6835191

    申请日:1991-04-01

    Abstract: PURPOSE:To impart a self-supporting property stable for a long time and to facilitate handling of the title compsn. without detriment to advantages of a ferroelectric liq. crystal such as a high-speed response to external stimuli such as an electric field. CONSTITUTION:The title compsn. wherein the helical structure of a ferroelectric liq. crystal has been untangled by dispersing a ferroelectric liq. crystalline region in a polymer matrix and stretching the resulting dispersion to reduce the thickness of the region below the helical pitch of the ferroelectric crystal.

    NONAQUEOUS ELECTROLYTIC SECONDARY BATTERY

    公开(公告)号:JPH10241685A

    公开(公告)日:1998-09-11

    申请号:JP5541697

    申请日:1997-02-25

    Abstract: PROBLEM TO BE SOLVED: To provide a nonaqueous electrolytic secondary battery with good storage characteristic, in which manganese elution does not occur even at a temperature beyond room temperature in particular, while maintaining a high capacity by using a lithium manganese oxide with its good crystalline and a battery internal impedance is not increased. SOLUTION: In a nonaqueous electrolytic secondary battery, a material of a spinel-based lithium manganese oxide which is represented by Li[Lix Mn2-x ]O4 (where 0

    8.
    发明专利
    失效

    公开(公告)号:JPH05304010A

    公开(公告)日:1993-11-16

    申请号:JP11049092

    申请日:1992-04-28

    Abstract: PURPOSE:To obtain magnetic resin composite material having both chemical- resistant property and corrosion-resistant property by a method wherein the resin composite material is composed of rare earth-iron-nitride magnetic powder of specific wt.% and fluororesin. CONSTITUTION:The title fluororesin magnetic composite material is formed by mixing rare earth-iron-nitrogen magnetic powder, in the range of composition showing ferromagnetism, of 70 to 99.5wt.%, thermoplastic or thermosetting fluororesin of 0.5 to 30wt.%. At this time, the amount of thermoplastic fluororesin is 3 to 30wt.%, desirably 7 to 20wt.%. Bonded magnet can be manufactured by compression-molding, extrusion molding or injection molding the magnetic composite material. Excellent chemical-resistant property and corrosion-resistant property can be obtained.

    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

    公开(公告)号:JPH10241686A

    公开(公告)日:1998-09-11

    申请号:JP5546497

    申请日:1997-02-25

    Abstract: PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery in which cycle performances are superior, even at the temperature of a room temperature or more as keeping high capacity having such a structure as lithium containing metal oxide is spinel lithium manganese oxide, an X-ray diffraction peak exists in specified ranges, and the half-value width of the X-ray diffraction peak exists in a specified range. SOLUTION: In a nonaqueous electrolyte secondary battery, lithium-containing metal oxide is spinel lithium manganese oxide which is shown by a general formula Li[Lix Mn2-x ]O4 (where 0.05

    10.
    发明专利
    失效

    公开(公告)号:JPH05308010A

    公开(公告)日:1993-11-19

    申请号:JP11184292

    申请日:1992-04-30

    Abstract: PURPOSE:To provide a method of manufacturing a compound for a bond magnet which can manufacture in a simple step a rare-earth-iron system nitride compound which has a good flow characteristic, and which is readily molded. CONSTITUTION:A rolling movement is made for a magnetic powder represented as a general equation R-Fe-N, and also the powder is pulverized by spraying an organic solvent solution containing additive matter. R in the equation is an element of one kind or more which is selected of rare-earth elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y). The surface treatment of the magnetic powder and pulverization can be carried out in one step, and further a flow characteristic of a compound is enhanced by pulverizing.

Patent Agency Ranking