Abstract:
A solid electrolytic secondary battery comprising a positive electrode, a negative electrode and a solid electrolyte interposed between the electrodes, wherein the solid electrolyte contains, as matrix polymer, fluorine polymer having a weight-average molecular weight (Mw) of 550,000 or larger, which polymer delivering an excellent adhesiveness to the active material layers of the positive and negative electrodes, thereby enabling a polymer sold electrolyte or a gel electrolyte to be bonded to electrode active material layers with a sufficient adhesive strength. In view of a paint viscosity, fluorine polymer having a weight-average molecular weight (Mw) of not smaller than 300,000 and less than 550,000 may be jointly used.
Abstract:
In a polymer electrolyte battery including a battery element having a cathode and an anode coiled through a polymer electrolyte, a section of the battery element perpendicular to the coiling axis has a curved form. As compared with a polymer electrolyte battery having a flat plate type battery element curved, the former battery has an extremely low possibility of short-circuit at the end of an electrode and excellent battery characteristics.
Abstract:
An optical element capable of converting light of a specified wavelength emitted from a light source into light of a different wavelength before outputting and a method of manufacturing the optical element, the method of manufacturing the optical element comprising the steps of optically polishing a first crystal member (20) and a second crystal member (21) having mutually opposed surfaces with coefficients of linear expansion different by 5 ppm or more from each other so that the mutually opposed surfaces include crystal axes, applying acrylic adhesive agent having a glass transient point of 75 ° C or below onto the adhesive surface of the first crystal member (20) or the second crystal member (21), adhering the first crystal member (20) to the second crystal member (21), radiating light to the adhesive agent to harden the adhesive agent so as to form an adhesive agent layer (22) having a refractive index of 1.52 or less, and cutting the adhered crystal member to a specified size; the optical element whereby the separation and crystal rupture of the adhesive agent layer (22) connecting the first crystal member to the second crystal member can be suppressed.
Abstract:
A solid electrolytic secondary battery comprising a positive electrode, a negative electrode and a solid electrolyte interposed between the electrodes, wherein the solid electrolyte contains, as matrix polymer, fluorine polymer having a weight-average molecular weight (Mw) of 550,000 or larger, which polymer delivering an excellent adhesiveness to the active material layers of the positive and negative electrodes, thereby enabling a polymer sold electrolyte or a gel electrolyte to be bonded to electrode active material layers with a sufficient adhesive strength. In view of a paint viscosity, fluorine polymer having a weight-average molecular weight (Mw) of not smaller than 300,000 and less than 550,000 may be jointly used.
Abstract:
A secondary cell exhibiting superior flexibility and cell characteristics. This secondary cell has an anode, a polymer electrolyte layer and an anode, layered together. At least one of the anode and the anode is formed by a sheet-like electrode comprised of a current collector, composed mainly of carbon fibers, and an electrode mixture carried thereon. A metal foil is provided in sliding contact with the sheet electrode on the opposite side of the sheet electrode with respect to the polymer electrolyte layer, and an electrode terminal is taken from said metal foil. The cell device is sealed under a reduced pressure by an exterior member.
Abstract:
A gel electrolyte and a gel-electrolyte battery are disclosed which have an improved cycle characteristic and preservation easiness at high temperatures. The gel-electrolyte battery incorporates a positive-electrode mix layer (3), a negative-electrode mix layer (5) and a gel-electrolyte layer (6). The gel-electrolyte layer contains a plasticizer which contains lithium salt, a matrix polymer for dispersing the plasticizer and fibrous insolubles. The fibrous insolubles are contained in the gel electrolyte in a quantity not less than 0.1wt% nor more than 50wt%. The ratio of the length and diameter of the fiber is not less than 10 nor more than 3000. The length of the fiber is not less than 10 mu m nor more than 1cm and the diameter of the fiber is not less than 0.05 mu m nor more than 50 mu m.
Abstract:
A polymer actuator is provided. The polymer actuator includes a plurality of gel/electrode complexes arranged in an electrolytic solution, wherein the gel/electrode complex is composed of a polymeric hydrogel containing acidic or basic functional groups and electrodes placed in the polymeric hydrogel, such that it changes in volume upon application of a voltage across said electrodes. The polymer actuator expands and contracts in the linear direction without curved deformation. The polymer actuator is light in weight and is capable of control with a low voltage.
Abstract:
A solid electrolyte cell in which the state of electrical contact between the solid electrolyte and the layers of active materials of the positive and negative electrodes and the inter-particulate distance in the layers of active materials of the positive and negative electrodes can be optimized to assure superior load characteristics, and a method for manufacturing the cell. The method for manufacturing a solid electrolyte cell includes a step of applying a paint containing an active material and a binder to a current collector to form a layer of an active material, and a step of impregnating a solid electrolyte in the layer of the active material formed by the active material layer forming step. The impregnating step includes applying the paint comprised of the solid electrolyte dissolved in a solvent on the layer of the active material to allow the paint to be permeated into the layer of the active material, and subsequently drying the solvent.