Abstract: The present invention relates to a battery mounted integrated circuit device where an integrated circuit and a solid state battery are formed on the same substrate. In this battery mounted integrated circuit device, a first diffusion layer containing an N-type impurity is formed between a region of a semiconductor substrate where the solid state battery is mounted and a region of the semiconductor substrate where the integrated circuit is mounted, and a second diffusion layer containing an N-type impurity is formed below the region of the semiconductor substrate where the solid state battery is mounted, and overlaps with the first diffusion layer.

Abstract: An all solid-state thin-film cell, comprising stacked plural power generating elements, where the plural power generating elements are connected in series or in parallel, each of the plural power generating elements comprises a first current collector, a first electrode, a solid electrolyte, a second electrode and a second current collector, which are successively stacked in this order, and a buffer layer is interposed between at least one pair of the power generating elements.

Abstract: To inhibit decrease in charge-discharge, storage and charge-discharge cycle characteristics due to reduction of phosphorus atoms in a battery including lithium phosphorus oxynitride as a solid electrolyte, a transition metal element is incorporated into lithium phosphorus oxynitride to prepare a solid electrolyte.

Abstract: To provide an electrochemical device with a layer structure causing no deterioration of characteristics of materials, in the method for preparing an electrochemical device comprising a first current collector, a first electrode active material layer, a solid electrolyte layer, a second electrode active material layer and a second current collector, all of which are accumulated, the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer is formed by supplying atoms, ions or clusters constituting the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer to the substrate, while irradiating electrons or electromagnetic waves with energy prescribed according to the composition of the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer.

Abstract: In a lithium polymer secondary battery comprising: a positive electrode comprising a lithium-containing complex oxide; a negative electrode comprising a material capable of intercalating and deintercalating lithium ions; and a separator interposed between the positive electrode and the negative electrode, the weight Wp of the polymer material constituting the polymer electrolyte contained in the positive electrode, the weight Wn of the polymer material constituting the polymer electrolyte contained in the negative electrode, and the weight Ws of the polymer material constituting the polymer electrolyte contained in the separator satisfy all of the following: Ws<Wn<Wp, 20≦100Wp/(Wp+Wn+Ws)≦50, 20≦100Wn/(Wp+Wn+Ws)≦50, and 20≦100Ws/(Wp+Wn+Ws)≦50; so that a lithium polymer secondary battery which is excellent in cycle stability and high in reliability is provided.

Abstract: A secondary battery comprising: a substrate; a first current collector; a first electrode; a solid electrolyte; a second electrode; and a second current collector; the first current collector being formed on the substrate and serving as a current collector of the first electrode, the first electrode being formed on the first current collector, the solid electrolyte being formed on the first electrode, the second electrode being formed on the solid electrolyte, the second current collector being formed on the second electrode and serving as a current collector of the second electrode, at least one electrode selected from the group consisting of the first electrode and the second electrode containing at least one material selected from the group consisting of an ion conductive material and an electron conductive material.

Abstract: In a lithium polymer secondary battery comprising: a positive electrode comprising a lithium-containing complex oxide; a negative electrode comprising a material capable of intercalating and deintercalating lithium ions; and a separator interposed between the positive electrode and the negative electrode, the weight Wp of the polymer material constituting the polymer electrolyte contained in the positive electrode, the weight Wn of the polymer material constituting the polymer electrolyte contained in the negative electrode, and the weight Ws of the polymer material constituting the polymer electrolyte contained in the separator satisfy all of the following: Ws<Wn<Wp, 20≦100Wp/(Wp+Wn+Ws)≦50, 20≦100Wn/(Wp+Wn+Ws)≦50, and 20≦100Ws/(Wp+Wn+Ws)≦50; so that a lithium polymer secondary battery which is excellent in cycle stability and high in reliability is provided.

Abstract: The present invention is a deterioration detecting method for an electrochemical device comprising electrodes and an ion conductor, wherein an electrochemical characteristic of the electrochemical device is detected, and an obtained value is then compared with a standard electrochemical characteristic of the electrochemical device to estimate the degree of deterioration of the electrochemical device. Further, the capacity of the device is found based on the detected degree of deterioration, and using this and the output of the device, a remaining capacity of the device is estimated. Accordingly, the degree of deterioration and the remaining capacity of an electrochemical device such as a secondary battery can be accurately detected.

Abstract: A method of measuring quantities that indicates the state of an electrochemical device having an electrode and an ionic conductor, such as material properties or a residual capacity, without disassembling the device. The quantities are measured by comparing (a) a series of theoretical data of an electrical characteristic of the device obtained by combining at least one of an electron transportation model of the electrode, an ion transportation model of the electrode, an ion conduction model of the ionic conductor and a model of an electrochemical reaction taking place in an interface between the electrode and the ionic conductor, with a potential model of the electrode, with (b) a series of measured data of the electrical characteristic of the electrochemical device.