Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Jsr Corporation

Tanaka Kikinzoku Kogyo K.k.

Junji Matsuo

Kaoru Fukuda

Nobuhiro Saito

Masaaki Nanaumi

Nagayuki Kanaoka

Yoichi Asano

Keisuke Andou

Hiroshi Sohma

Kohei Goto

Ichiro Tanaka

Ryoichiro Takahashi

Koichi Matsutani

Masayuki Takahashi

Tomoyuki Tada

Masaki Tani

Masahiko Inoue

Fusazumi Masaka

Yuji Naito

A solid polymer electrolyte fuel cell comprises: a plurality of electrode structures comprising an anode and a cathode, and polymer electrolyte membrane held between the anode and the cathode, and a plurality of separators for holding the respective electrode structures, with a fuel gas passage for supplying and discharging fuel gas containing hydrogen on a surface opposing the anode; and an oxidant gas passage for supplying and discharging oxidant gas on a surface opposing the cathode. The catalyst layer of the anode comprises a mixture of an ion conductive material, a platinum powder and/or platinum alloy powder and a carbon, the platinum powder and/or platinum alloy powder and carbon substantially exist independently from each other, and the catalyst layer of the cathode comprises a metal support mixture in which the ion conductive material and the electro-conductive material having the supported catalyst material are mixed.

Solid polymer electrolyte fuel cell and method for manufacturing the same

A membrane electrode assembly for a solid polymer electrolyte fuel cell includes an anode electrode, a cathode electrode, and a polymer electrolyte membrane sandwiched by the electrodes, the catalyst layer of the cathode electrode containing a catalyst supporting particle in which a precious metal is supported on heat-treated carbon black or activated carbon, an ion conductive material, and a crystalline carbon fiber. Heat treatment is preferably applied at 2,500 to 3,000&#xb0; C. (degrees Celsius). The membrane electrode assembly provides superior power generation performance.

Membrane electrode assembly for solid polymer electrolyte fuel cell

A membrane electrode assembly for solid polymer electrolyte fuel cell includes an anode electrode, a cathode electrode, and a polymer electrolyte membrane sandwiched by these electrodes, the catalyst layer of cathode electrode contains a Pt&#x2014;Co catalyst that is Pt&#x2014;Co alloys supported by an electrical conductive material, and crystalline carbon fibers, improving the catalyst activity and controlling the oxidization corrosion reaction of the catalyst carrier can be carried out, and providing a high initial performance and superior durability.

Membrane electrode assembly of solid polymer electrolyte fuel cell

The present invention provides a polymer electrolyte fuel cell, which is inexpensive and has an excellent efficiency of generating electric power, by using a material alternative to a perfluoroalkylene sulfonic acid polymer. The polymer electrolyte fuel cell comprises a pair of electrodes () consisting of an oxygen electrode () and a fuel electrode () both having a catalyst layer () containing a catalyst and an ion conducting material; and a polymer electrolyte membrane () sandwiched between the two catalyst layers () of the both electrodes (). The above ion conducting material contained in the above polymer electrolyte membrane () or in the catalyst () layer of at least one of the above electrodes () comprises a sulfonated polyarylene having sulfonic acid side-chain groups.

Solid polymer type fuel cell

A solid polymer fuel cell includes an electrolyte membrane having a polymer ion-exchange component, and an air electrode and a fuel electrode between which the electrolyte membrane is sandwiched. Each of the air electrode and the fuel electrode can be formed of a polymer ion-exchange component and a plurality of catalyst particles including a catalyst metal carried on surfaces of carbon black particles, and includes no third component. When a moistening for maintaining the electrolyte membrane in a wet state is carried out from both of the side of the air electrode and the side of the fuel electrode, the carbon black particles have a water-repellent property such that an amount A of water adsorbed under a saturated steam pressure at 60&#xb0; C. is equal to or smaller than 80 cc/g, and a ratio Wp/Wc of a weight Wp of polymer ion-exchange component incorporated to a weight Wc of carbon black particles incorporated is set in a range of 0.4&#x2266;Wp/Wc&#x2266;1.25.

Solid polymer fuel cell

A composite polymer electrolyte membrane is formed from a first polymer electrolyte comprising a sulfonated polyarytene polymer and a second polymer electrolyte comprising another hydrocarbon polymer electrolyte. In the first polymer electrolyte, 2-70 mol % constitutes an aromatic compound unit with an electron-attractive group in its principal chain, while 30-98 mol % constitutes an aromatic compound unit without an electron-attractive group in its principal chain. The second polymer electrolyte is a sulfonated polyether or sulfonated polysulfide polymer electrolyte.

Polymer electrolyte membrane and solid polymer electrolyte fuel cell using same

Growing community of inventors

Wako, Japan

Junji Matsuo