Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Keiichi Kondou

Hideki Shimamoto

Yukihiro Shimasaki

Hitoshi Ishimoto

Kazuya Yamasaki

Masashi Shoji

Tomohiro Okuzawa

Tsutomu Kawashima

Motohiro Sakata

Toshiro Kume

Susumu Nomoto

Koji Ogawa

A fuel cell catalyst layer includes a plurality of carbon particles, a plurality of catalyst particles, and at least one plate-shaped carbon member disposed between the plurality of carbon particles. The plurality of catalyst particles are supported on surfaces of the plurality of carbon particles. The plate-shaped carbon member may be replaced with a rod-shaped carbon member.

Catalyst layer for fuel cell, and fuel cell

Disclosed is a gas-diffusion layer used for fuel cells, including: a porous material that includes as main ingredients conductive particles and a polymer resin, wherein said gas-diffusion layer internally possesses pores with a size from 0.01 &#x3bc;m to 0.05 &#x3bc;m, and hollows with a size from 1 &#x3bc;m to 200 &#x3bc;m. Further disclosed is a process for producing a gas-diffusion layer used for fuel cells, including: (i) kneading conductive particles, a polymer resin, a pore-forming agent, a surfactant, and a dispersion solvent; (ii) rolling the mixture obtained in Step (i) to shape said mixture into a sheet; (iii) baking the sheet-shaped mixture to sublime the pore-forming agent, thereby forming hollows therein, and to remove the surfactant and the dispersion solvent; and (iv) further rolling the baked mixture to adjust a thickness of the baked mixture.

Gas diffusion layer for fuel cell, method for manufacturing said layer, membrane-electrode assembly, and fuel cell

An electrode catalyst material includes graphite particles and catalyst particles. Each of the graphite particles has a hollow structure that includes an outer shell, and the outer shell has at least one of a through-hole and a recess. Each of the catalyst particles is supported by the at least one of through-hole and recess.

Electrode catalyst material, and fuel cell

An electrode for capacitor includes a current collector having conductivity, a protective layer formed on the current collector, an anchor coat layer formed on the protective layer, and a polarizing electrode layer formed on the anchor coat layer. The protective layer contains an oxyhydroxide and the anchor coat layer contains conductive particles.

Electrode for capacitor, process for producing same, and capacitor including the electrode

A capacitor includes a first collector made of metal foil, a first electrode layer placed on a surface of the first collector and mainly containing a carbonaceous material, a resin layer provided on the first electrode layer, a second electrode provided on the resin layer and mainly containing a carbonaceous material, a second collector provided on the second electrode layer and made of metal foil, a case accommodating the first collector, the first electrode layer, the resin layer, the second electrode, and the second collector therein, and an electrolyte accommodated in the case. The resin layer has a non-woven fabric form of fibers made of resin irregularly bonded to one another. The fibers of the resin layer intertwine with the first electrode layer. The fibers of the resin layer intertwine with the first electrode layer. This capacitor can be thin and small.

Capacitor

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 electric double layer capacitor includes a case, an electrolyte solution accommodated in the case, and an electrode foil immersed in the electrolyte solution. The electrode foil includes a collector and an electrode layer covering the collector. The collector has a first surface and a second surface opposite to the first surface. The collector has apertures provided therein. The apertures communicate with the first surface and the second surface of the collector. The collector includes a projection provided at an edge of at least one aperture out of the apertures. The projection projects from the first surface of the collector and penetrates the electrode layer. The electric double layer capacitor provides a large contact area and a large joining strength between the collector and the electrode layer, and allows the collector to have a small thickness, hence having a large output density and a large energy density.

Electric double layer capacitor including current collector having a plurality of apertures therein

A negative electrode of an electrochemical capacitor includes an electrode layer using a material capable of reversibly absorbing and releasing a lithium ion. A method for pretreating the negative electrode includes forming a lithium layer on a substrate by a gas phase method or a liquid phase method, and transferring the lithium layer onto a surface of the electrode layer of the negative electrode.

Method for pretreating electrochemical capacitor negative electrode, method for manufacturing the electrochemical capacitor negative electrode, and method for manufacturing electrochemical capacitor using the method for manufacturing the electrochemical capacitor negative electrode

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Hyogo, Japan

Keiichi Kondou