Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Ube Industries, Inc.

Panasonic Intellectual Property Management Co., Ltd.

Shigeyuki Unoki

Hiroki Kusakabe

Eiichi Yasumoto

Shinichi Arisaka

Kazuhito Hatoh

Yoichiro Tsuji

Shinsuke Takeguchi

Takashi Morimoto

Koji Abe

Takashi Nakagawa

Hideharu Takezawa

Yasushi Sugawara

Osamu Sakai

Toshikazu Hamamoto

Takashi Takeuchi

Norihiko Kawabata

Yasuo Takebe

Akira Ueki

Shoichiro Watanabe

Soichi Shibata

Mitsuo Yoshimura

Tsutomu Kawashima

Yoshiki Nagao

Hajime Konishi

Hideo Kasahara

Toru Sukawa

Katsumi Yamashita

Yusuke Ikeshima

Tatsuo Nagasaki

Masatoshi Teranishi

Yasumoto Eiichi

A cell stack of a fuel cell comprises a cell stack body including a cell stack structure including plural cells stacked together; an elastic member disposed at an end of the cell stack structure in a direction in which the plural cells are stacked, and a pair of end plates sandwiching the cell stack structure and the elastic member, and a fastener band extending to surround the cell stack body and to cover a pair of end surfaces and a pair of opposing side surfaces of the cell stack body, the fastener band including a first band engagement portion and a second band engagement portion at both end portions thereof, respectively, and the cell stack body is fastened by the fastener band by direct or indirect engagement between the first band engagement portion and the second band engagement portion.

Cell stack of fuel cell and method of fastening cell stack of fuel cell

In an MEA member constituted by a polymer electrolyte membrane-electrode assembly (MEA) and a frame and in a polymer electrolyte fuel cell including this MEA member, the MEA and the frame can be easily separated from each other without using any special tool. An MEA memberincludes an MEAand a plate-shaped resin frame, and a separating portion for separating the MEAfrom the frameis formed in the MEA member. The MEAincludes a polymer electrolyte membraneand a pair of electrodesandrespectively disposed on both main surfaces of the polymer electrolyte membrane. The framesandwiches and holds a peripheral portion of main surfaces of the MEAsuch that the MEAis located inside the frame. The separating portion is a broken-line cutoff lineformed on the frameto divide the frameinto two or more parts or a partial sandwiching portionlocated at an inner peripheral portion of the frameto partially sandwich the peripheral portion of the MEA

MEA member and polymer electrolyte fuel cell

A preservation assembly of a polymer electrolyte fuel cell stack is provided. The assembly includes an uninstalled polymer electrolyte fuel cell stack and sealing units. The uninstalled polymer electrolyte fuel cell stack is provided with an oxidizing agent passage having an inlet and an outlet and extending through a cathode and a reducing agent passage having an inlet and an outlet and extending through an anode. The sealing units include sealing plugs or containers and are configured to seal the inlet and the outlet of the oxidizing agent passage within which an oxygen concentration has been decreased and to seal the inlet and the outlet of the reducing agent passage within which the oxygen concentration has been decreased. The uninstalled polymer electrolyte fuel cell stack is in a state before an assembled polymer electrolyte fuel cell stack is incorporated into a fuel cell system.

Preservation assembly of polymer electrolyte fuel cell stack

A method of preserving a PEFC stack of the present invention is a method of preserving a PEFC stack that is provided with an oxidizing agent passage having an inlet and an outlet and extending through a cathode and a reducing agent passage having an inlet and an outlet and extending through an anode. The method comprises preserving the polymer electrolyte fuel cell stack in an uninstalled state under a condition in which an oxygen concentration within the oxidizing agent passage and within the reducing agent passage is lower than an oxygen concentration in atmospheric air.

Method of preserving polymer electrolyte fuel cell stack and preservation assembly of polymer electrolyte fuel cell stack

There are provided measuring units of measuring the amount of fluoride ions in the waste material from a fuel cell which receives a fuel gas and an oxidizing agent gas containing oxygen to undergo electrochemical reaction by which electricity is generated and a life predicting unit of predicting the life of the fuel cell by the use of the amount of fluoride ions thus measured.

Fuel cell life predicting device and fuel cell system

A non-aqueous electrolyte containing propylene carbonate and 1,3-propanesultone as additives can reduce the amount of a gas evolved during storage at a high temperature of a non-aqueous electrolyte secondary cell comprising the electrolyte, a non-aqueous electrolyte containing at least one compound selected from the group consisting of vinylene carbonate, diphenyl disulfide, di-p-tolydisulfide and bis(4-methoxyphenyl)disulfide as comprising the electrolyte, and a non-aqueous electrolyte containing a combination of the above-two types of additives can provide a non-aqueous electrolyte secondary cell exhibiting excellent retention of capacity and storage stability.

Non-aqueous electrolyte and non-aqueous electrolyte secondary battery

Growing community of inventors

Osaka, Japan

Shigeyuki Unoki