Fujitsu Corporation

Ube Industries, Inc.

Masami Tsutsumi

Hiroshi Horiuchi

Tsutomu Miyashita

Kensuke Yoshida

Hiroaki Yoshida

Fumio Takei

Isao Watanabe

Tamotsu Yamamoto

Seiji Hibino

Nawalage Florence Cooray

Masaki Yoshio

Yasuo Naganuma

Yoichi Takasu

Hideya Yoshitake

Youichi Takasu

In the present invention, a material having a structure represented by formula (1) or (2) (wherein W equals N or C) is used as a solid electrolyte for a fuel cell. An electrolyte membrane having a small fuel crossover and a fuel cell having excellent ion conductivity and service capacity are obtained. 

Redox fuel cell using methanol

Back pressure is applied to a liquid fuel stored in a fuel storage unit by a pressure application unit, and a liquid fuel vaporization membrane that vaporizes the liquid fuel to thereby supply the vaporized fuel gas to an anode is formed by a nonporous membrane. Backed by this, the liquid fuel can be prevented from leaking out to the anode, so that the concentration of the liquid fuel can be increased to an optimum level.

Fuel cell

A method for producing a catalyst for a fuel cell is provided which is capable of improving output characteristics of the fuel cell. Metal fine particles making up the catalyst for the fuel cell to be used as a fuel electrode and air electrode are formed by reducing platinum salt with molybdenum carbonyl. The catalyst for the fuel cell is formed by supporting platinum-molybdenum fine particles on carbon particles. By employing this reducing method, platinum-molybdenum fine particles being small in size and high in dispersibility can be obtained, making the catalyst for the fuel cell highly active. By constructing the fuel and air electrodes using the catalyst for the fuel cell, high outputs from the fuel cell are made possible.

Production method of catalyst for fuel cell and of fuel cell, and catalyst for fuel cell and fuel cell

A housing made of a magnesium material is colored by a non-painting process. In this process, an anode oxide film is grown on the surface of the housing by subjecting the housing to anodization. The anode oxide film is colored without a paint being applied to the surface of the film.

Method of coloring magnesium material, and housing made of colored magnesium material

Lithium secondary battery, anode for lithium secondary battery, and method for manufacturing the anode

A lithium secondary battery includes a cathode which can be dischargeably charged with lithium ions, an anode made of lithium metal, a lithium alloy or any other anode material which can be releasably doped with lithium ions, and an electrolyte which allows migration of lithium ions between both electrodes. The cathode contains a halogen compound which releases halogen atoms, halogen ions or a reactive halogen-containing substance for reacting with the anode, thereby deactivating the anode to prevent excessive heat generation before oxygen released from the cathode due to a temperature rise reacts with the anode.

Lithium secondary battery and cathode composition therefor

A lithium secondary battery includes a cathode which can be dischargeably charged with lithium ions, an anode made of lithium metal, a lithium alloy or any other anode material which can be releasably doped with lithium ions, an electrolyte which allows migration of lithium ions between both electrodes, and an endothermic substance which undergoes an endothermic reaction upon a temperature rise of the battery for preventing excessive heat generation. Typically, the endothermic substance is a metal carbonate such as magnesium carbonate, cobalt (II) carbonate, silver carbonate, cadmium carbonate or sodium hydrogencarbonate.

An ion-conductor for a lithium secondary battery comprising at least an electrolyte and an additive;

Ion-conductor for lithium secondary battery and lithium secondary

An electrolytic solution for a lithium secondary battery is provided, which comprises: an electrolyte; an organic solvent; and an additive, wherein the additive is an aromatic nitrogen-containing heterocyclic compound such as pyrazine, quinoxaline, indole, phenazine, phthalazine, pyrimidine, or a mixture thereof.

Growing community of inventors

Kawasaki, Japan

Masami Tsutsumi