Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Toshiro Kume

Masakazu Tanahashi

Emiko Igaki

Junji Kojima

Go Tei

Kouichi Morimoto

Akira Takahashi

Mikinari Shimada

Akira Kano

Satoru Ohuchi

Masahiro Ito

Masao Fukunaga

Yuta Sugimoto

Shuji Tsutsumi

Kozo Watanabe

Masashi Shoji

Tomoyasu Yokoyama

Masahiko Ito

Keiichi Kondou

Tomohiro Okuzawa

Ichiro Yasuoka

Shouichi Imashuku

A cathode active material for magnesium secondary batteries includes a material containing magnesium, boron, and carbon. The material has a layered structure.

Cathode active material containing boron and carbon, and magnesium secondary battery using the same

A cathode active material for magnesium secondary batteries contains a composite oxide represented by the formula MgMO, where M is at least one selected from the group consisting of Ni, Co, Mn, Ti, V, Cr, Fe, Cu, and Mo; 1.0&#x3c;x, and y&#x3c;1.0.

Cathode active material containing magnesium-transition metal composite oxide and magnesium secondary battery using the same

An all-solid-state lithium-ion secondary battery includes a cathode active material, an anode active material, a solid electrolyte between the cathode and anode active materials, and an intermediate layer between the solid electrolyte and the cathode active material. The cathode and anode active materials are able to store and release a lithium ion. The solid electrolyte has lithium ion conductivity. The intermediate layer is constituted of elements including all elements constituting the cathode active material. A lithium ion in the intermediate layer is less ionic than that in the cathode active material.

All-solid-state lithium-ion secondary battery including a solid electrolyte and an intermediate layer

Disclosed is an electrochemical capacitor which comprises an element, an electrolyte, and an outer case that houses the element and the electrolyte. The element comprises: a negative electrode that is obtained by forming a negative electrode layer on the surface of a collector, the negative electrode layer containing a carbon material in which lithium ions are absorbed; a positive electrode that is obtained by forming a positive electrode layer on the surface of a collector, the positive electrode layer absorbing ions; and a separator that is interposed between the negative electrode and the positive electrode. The electrolyte contains lithium ions. A coating film that contains lithium carbonate is formed on the surface of the carbon material that is contained in the negative electrode layer.

Electrochemical capacitor and electrode used therein

An electrode in sheet form includes a current collector and an electrode mixture layer carried on each side thereof. The electrode is bent in the longitudinal direction thereof, to cause a large number of cracks in at least the electrode mixture layer to be positioned on the inner side of the current collector when wound, such that the cracks extend from the surface of the electrode mixture layer to the current collector in the direction intersecting with the longitudinal direction of the electrode. This bending process includes the steps of: bending the electrode at a curvature that is smaller than that of the winding core at least once; and thereafter bending the electrode at a curvature that is equal to or larger than that of the winding core. For example, this process is performed by arranging rollers such that their diameters decrease gradually and pressing the electrode against these rollers. This invention provides an electrode that does not break when wound to form an electrode assembly.

Electrode for non-aqueous electrolyte secondary battery and production method thereof

A method for testing a precursor of a secondary cell with high reliability and high efficiency to judge the precursor to be acceptable or defective. The current flowing when a test voltage is applied between a pair of electrodes is measured before an electrolyte is placed between the electrodes. If a current the current value of which exceeds a predetermined reference current value () is detected during the time from the start of application of a voltage to a normal secondary cell precursor until the current becomes constant, the precursor is determined to be defective.

Method and device for inspecting secondary battery precursor and method for manufacturing secondary battery using the inspection method

An electrode for a PTC thermistor of the present invention includes a base layer having electrical conductivity and a sintered layer formed on the base layer. The sintered layer is formed by sintering a conductive powder and has electrical conductivity, and has roughness on a surface thereof. Thus, the present invention can provide an electrode for a PTC thermistor that has a large adhesion to the conductive polymer and can be produced easily.

Electrode for PTC thermistor and method for producing the same, and PTC thermistor

Growing community of inventors

Hyogo, Japan

Toshiro Kume