Abstract: A non aqueous electrolyte secondary battery comprises a positive electrode made from a material which is capable of occluding and discharging anions, a negative electrode made from a material which is capable of occluding and discharging cations, and a non aqueous electrolyte containing a room temperature molten salt having a melting point of not greater than 60° C.

Abstract: A non-aqueous electrolyte secondary cell is provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte solution, wherein said positive electrode comprises sulfur and said non-aqueous electrolyte solution comprises a room-temperature molten salt having a melting point of 60° C. or less.

Abstract: The electrode for a lithium secondary battery includes: a current collector; an interlayer containing Mo or W provided on the current collector; and a thin film composed of active material capable of lithium storage and release deposited on the interlayer.

Abstract: In a non-aqueous electrolyte secondary cell including a positive electrode, a negative electrode and a non-aqueous electrolyte, the negative electrode includes a material capable of absorbing or releasing lithium and wherein the non-aqueous electrolyte contains a room-temperature molten salt having a melting point of 60° C. or less and a lithium salt.

Abstract: A positive electrode for a lithium secondary battery having a mixed layer containing an active material including a lithium-containing phosphate having an olivine structure, a conductive agent and a binder on a current collector of a conductive metal foil, wherein a surface roughness (Ra) of a surface of the current collector on which the mixed layer is formed is at least 0.1 &mgr;m.

Abstract: A method for fabricating an electrode for lithium secondary battery formed by depositing a thin film composed of active material capable of lithium storage and release, on a metallic foil to be used as a current collector, in which the surface of the metallic foil is roughened through wet-etching and then the thin film is deposited on the roughened surface.

Abstract: A negative electrode for a rechargeable lithium battery which is obtained by sintering under a non-oxidizing atmosphere, in the form of a layer on a surface of a metal foil current collector, an anode mix containing a binder and particles of active material containing silicon and/or a silicon alloy; the negative electrode being characterized in that the metal foil current corrector has projections and recesses on its surface, the projection is shaped to have a recurved side face portion that curves more outwardly as it extends closer to a distal end of the projection, and the binder penetrates into spaces defined by the recurved side face portions.

Abstract: An apparatus, for forming an electrode for a lithium secondary cell capable of readily forming an active material layer constituted by at least two elements and controlling the composition of the active material layer, comprises a first sputtering source for sputtering a first material forming the active material layer onto the surface of the collector and a second sputtering source for sputtering a second material forming the active material layer onto the surface of the collector. Plasma regions of the first and second sputtering sources are arranged to overlap each other. The active material layer constituted by at least two elements is readily formed with excellent reproducibility, and its composition can be readily controlled by independently controlling power applied to the first sputtering source and the second sputtering source.

Abstract: A rechargeable lithium battery using an Li alloying metal as the active material of at least one of its positive and negative electrodes. The metal active material is covered with a thin film which is nonreactive with Li ions, permits passage of Li ions but does not have an Li ion conductivity.

Abstract: A method of manufacturing an electrode for a secondary battery by depositing a thin film composed of active material on a current collector in which a surface-treated layer such as an antirust-treated layer is formed, including the steps of: removing at least part of the surface-treated layer by etching the surface of the current collector with an ion beam or plasma in order to improve the diffusion of the current collector material into the active material thin film; and depositing the thin film on the surface of the current collector subjected to the etching step.

Abstract: A lithium secondary battery comprising an electrode in which an active material layer which includes an active material that electrochemically occludes and releases lithium is formed on a current collector, wherein cracks are formed in the active material layer by occlusion and release of lithium ions and thereafter a solid electrolyte is formed in the cracks in the active material layer.

Abstract: A nonaqueous electrolyte rechargeable battery including a positive electrode comprising a molybdenum metal oxide deposited, in the form of a thin film, on an aluminum-containing substrate and represented by the formula Mo1−xMxO2+y (where M is at least one element selected from the group consisting of Ni, Co, Mn, Fe, Cu, Al, Mg, W, Sc, Ti, Zn, Ga, Ge, Nb, Rh, Pd and Sn, x satisfies the relationship 0.005≦x≦0.5, and y satisfies the relationship 0.6≦y≦1.2).

Abstract: A negative electrode for a lithium secondary battery obtained by sintering an active material layer on a current collector under a non-oxidizing atmosphere after the active material layer including primary particles of an active material containing silicon and/or a silicon alloy and a binder is formed on an electrically conductive metal foil as a current collector. A mean diameter of primary particles of the active material is less than 1 &mgr;m, the primary particles are dispersed uniformly in the active material layer, and the primary particles and the binder are uniformly mixed and distributed.

Abstract: A nonaqueous electrolyte rechargeable battery using molybdenum oxide in the form of thin film deposited on an aluminum-containing substrate, as a positive electrode material.

Abstract: An electrode for lithium secondary battery having a current collector and, deposited thereon, a thin film comprising silicon as a main component, characterized in that the thin film comprising silicon contains at least one of the elements belonging to the groups IIIa, Iva, Va, VIa, VIIa, VIII, Ib and IIb in the fourth, fifth and sixth periods of the Periodic Table (exclusive of copper (Cu)) at least in the surface portion thereof.

Abstract: A method for fabricating an electrode for a rechargeable lithium battery which includes depositing a thin film composed of active material capable of alloy formation with lithium on a current collector made of a metal incapable of alloy formation with lithium, by using a process for depositing a thin film by supplying a material from a gas phase, characterized in that the thin film of active material is deposited at such a temperature that enables formation of a mixed layer via diffusion of a constituent of the current collector into the thin film in the vicinity of an interface therebetween.

Abstract: The method for producing an electrode for a lithium secondary battery, having an active material in the form of a thin film composed of an interface layer formed on a current collector and an active material layer formed on the interface layer. The method comprises the steps of: depositing the interface layer on the current collector by sputtering; and depositing the active material layer on the interface layer by vapor evaporation.

Abstract: A method for fabricating an electrode for lithium secondary battery characterized by applying a tension to a metallic foil so as to pull an area of the metallic foil on which a thin film composed of active material is deposited, from the both sides in the direction of longitude, when depositing the thin film on the metallic foil serving as a current collector.

Abstract: A method for manufacturing an electrode for a lithium secondary battery includes a step of forming an oxide film other than a natural oxide film on a current collector by oxidizing the surface of the current collector, and a step of forming an active material layer on the oxide film by a method to provide a material for the active material layer by emitting in the vapor phase, such as PVD (physical vapor deposition) including sputtering, vapor evaporation, and the like, and CVD (chemical vapor deposition) including plasma CVD.

Abstract: A non aqueous electrolyte secondary battery comprises a positive electrode made from a material which is capable of occluding and discharging anions, a negative electrode made from a material which is capable of occluding and discharging cations, and a non aqueous electrolyte containing a room temperature molten salt having a melting point of not greater than 60° C.