Abstract: Lithium batteries having excellent high rate characteristics and low-temperature characteristics, and less in evolution of gases and superior in discharge characteristics are provided by using LiCoO2 mixed with CaO or Cr2O3 or the like as an active material of positive electrode in combination with a non-aqueous electrolyte containing a mixed electrolyte salt comprising both a fluorine-containing inorganic anion lithium salt and a lithium imide salt.

Abstract: The non-aqueous electrolyte-containing secondary battery of the present invention uses a non-aqueous electrolyte including at least one phosphoric ester derivative expressed by Formula (1): (R1aO)(R2aO)P(O)X and by Formula (2): R(1bO)P(O)X2, wherein R1a, R2a, and R1b independently denote aliphatic hydrocarbon groups having 1 to 12 carbon atoms and X denotes a halogen atom. This arrangement improves the high-temperature storage characteristics after charging and the charge-discharge cycle characteristics of the secondary battery.

Abstract: A non-aqueous electrolyte secondary battery which comprises a positive electrode containing a lithium-containing oxide; a negative electrode containing a material capable of absorbing and releasing lithium; and a non-aqueous electrolyte containing a non-aqueous solvent containing at least one non-cyclic ester and which is excellent in storage stability at high temperatures is provided by adding an oxidation resistance improving agent such as triphenylmethane, tetraphehylmethane or the like.

Abstract: Disclosed is a non-aqueous electrolyte battery comprising: a flat outer jacket comprising a metal sheet and having two primary flat portions facing each other; two active material layers of a first polarity respectively carried on inner surfaces of the flat portions; an electrode plate of a second polarity disposed in a position facing with each of the active material layers; and a separator layer interposed between each of the active material layers and the electrode plate of a second polarity, with the outer jacket serving as a current collector of the active material layers.

Abstract: In a rechargeable non-aqueous electrolyte secondary battery using positive electrodes, negative electrodes and a non-aqueous electrolytic solution, additives to the electrolytic solution are used in combination, preferably in combination of at least two compounds selected from o-terphenyl, triphenylene, cyclohexylbenzene and biphenyl, and thus there are provided batteries excellent in safety and storage characteristics.

Abstract: A non-aqueous electrolyte secondary battery comprising: a positive electrode comprising a positive electrode current collector and a positive electrode material mixture layer formed thereon; a negative electrode comprising a negative electrode current collector and a negative electrode material mixture layer formed thereon; and a non-aqueous electrolyte, characterized in that at least one of said positive and negative electrodes has a positive temperature coefficient of resistance; and said non-aqueous electrolyte contains an additive which is stable in the normal operating voltage range of said battery and is able to polymerize at the voltage exceeding the maximum value of said operating voltage range.

Abstract: Lithium batteries having excellent high rate characteristics and low-temperature characteristics, and less in evolution of gases and superior in discharge characteristics are provided by using LiCoO2 mixed with CaO or Cr2O3 or the like as an active material of positive electrode in combination with a non-aqueous electrolyte containing a mixed electrolyte salt comprising both a fluorine-containing inorganic anion lithium salt and a lithium imide salt.

Abstract: In a non-aqueous electrolyte secondary battery having: an electrode plate assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode; a non-aqueous electrolyte including a lithium salt and a non-aqueous solvent; and a gas absorbing element that absorbs gas produced in the secondary battery, wetting of the gas absorbing element with the non-aqueous solvent is controlled.

Abstract: A non-aqueous secondary battery comprising a positive electrode comprising a lithium-containing metal oxide, and a negative electrode comprising a carbon material as the active material is disclosed. The electrodes are separated by either a separator impregnated with organic electrolyte solution or by a solid electrolyte layer. The negative electrode comprises a mixture of the carbon material and at least one metal oxide selected from TiO2, Cr2O3, MnO2, Fe3O4, CoO, Co2O3, Co3O4, NiO, Ni2O3, Ag2O, PbO, Sb2O3, Bi2O3, SeO2, and TeO2.

Abstract: Using a graphite material capable of intercalating and de-intercalating lithium ions as the anode, the peak intensity ratio R(=I(110)/I(004)) corresponding to lattice planes (110) and (004) of graphite material obtained by wide angle X-ray diffraction measurement of this anode is in a range of 0.05 to 0.5. Hence, edges of graphite crystals exist adequately on the electrode surface at the interface to the electrolyte, and therefore intercalation of lithium proceeds smoothly, polarization at the time of charging and discharging is suppressed, and a nonaqueous electrolyte secondary battery excellent in high rate discharging characteristic is obtained. The obtained battery is small in deterioration if charging and discharging are repeated.

Abstract: The non-aqueous electrolyte-containing secondary battery of the present invention uses a non-aqueous electrolyte including at least one phosphoric ester derivative expressed by Formula (1): (R1aO)(R2aO)P(O)X and by Formula (2): R(1bO)P(O)X2, wherein R1a, R2a, and R1b independently denote aliphatic hydrocarbon groups having 1 to 12 carbon atoms and X denotes a halogen atom. This arrangement improves the high-temperature storage characteristics after charging and the charge-discharge cycle characteristics of the secondary battery.

Abstract: A battery excellent in high temperature storage characteristic is presented. It comprises a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode material, a nonaqueous solvent, and an electrolytic solution containing at least one of organic compounds expressed in formula 1 and formula 2. The positive electrode active material has an oxide compound containing a lithium atom, and the negative electrode material has a material capable of storing and releasing a lithium ion. Formula 1 where R1, R2, R3, R4 are individually at least one selected from the group consisting of H, aryl group, and aryl group having a functional group containing a substituent having an electron attracting property, and the number of H is three or less.

Abstract: The present invention relates to a method of producing a positive active material for a non-aqueous electrolyte secondary battery generally referred to as a lithium-ion secondary battery and is intended to provide a method of producing a new positive active material which is superior in both discharge capacity and cycle life through improvement of a complex oxide of lithium and nickel from which a high discharge capacity can be expected. In order to attain this object, a Li-containing complex oxide is synthesized in this method by firing a mixture of a nickel oxide, in which an element M (M being at least an element selected from the group consisting of Co, Mn, Cr, Fe, and Mg) is dissolved as a solid solution, and lithium hydroxide or its hydrate. By using this as an active material in the positive electrode, it is possible to realize a non-aqueous electrolyte secondary battery which has a high capacity and a long cycle life, and which will not suffer from storage at a high temperature in a charged state.

Abstract: Lithium composite metal oxides prepared by mixing at least one type of hydroxides, oxides, and carbonates of a metal selected from the group of transition metal, IIA metal, and IIIA metal, and a lithium compound of which the D50 value is in the range 5 to 50 &mgr;m, the D90 value is 90 &mgr;m or smaller, and in which particles 100 &mgr;m or greater do not exist, and calcining in the temperature range 700 to 1000° C. for 2 to 30 hours, and grinding, are used as the active material of a positive electrode which is laminated with a negative electrode with a separator interposed and spirally wound thereby forming an electrode group. By using the positive active materials prepared in this manner, discharge capacity and cycle characteristic of a non-aqueous electrolyte secondary cell can be improved.

Abstract: A battery excellent in high temperature storage characteristic is presented. It comprises a positive electrode having a positive electrode active material containing an transition metal complex oxide containing lithium , a negative electrode containing a negative electrode material capable of storing and releasing a lithium ion, and an electrolytic solution containing a nonaqueous solvent, an electrolyte, and an organic compound expressed in formula 1. ##STR1## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 have individually at least one of H and a group containing a vinyl group, and the number of H substituent is four or less.

Abstract: A nonaqueous secondary battery has high energy density and excellent charging and discharging cycle characteristic. The constitution includes (a) a positive electrode having a positive electrode substance, (b) a negative electrode having an carbon fluoride, and a carbon material, and (c) an electrolyte solution. The positive electrode substance is capable of releasing and occluding lithium ions in charging and discharging, the carbon material is capable of occluding and releasing the lithium ions in the charging and discharging, the carbon fluoride is capable of reacting chemically with the lithium ions, and the electrolyte solution is a nonaqueous electrolyte solution. The carbon fluoride is expressed by chemical formula (C.sub.x F).sub.n.

Abstract: A positive electrode made of lithium contained metal oxide and a negative electrode made of a carbon material as active material are separated by a separator impregnated with organic electrolyte solution or a solid electrolyte layer. In particular, the carbon material is added with the metal oxide which can electrochemically be reduced by charge to generate a metal. The metal oxide consists mainly of a mixture of the carbon material and at least one metal oxide selected from a group of TiO.sub.2, Cr.sub.2 O.sub.3, MnO.sub.2, Fe.sub.3 O.sub.4, CoO, Co.sub.2 O.sub.3, Co.sub.3 O.sub.4, NiO, Ni.sub.2 O.sub.3, Ag.sub.2 O, PbO, Sb.sub.2 O.sub.3, Bi.sub.2 O.sub.3, SeO.sub.2, and TeO.sub.2.