Ngk Insulators, Inc.

Shigenori Ito

Kiyoshi Okumura

Shinji Kawasaki

Katsuki Yoshioka

Takashi Ryu

Mitsuru Hattori

Sota Shimizu

Yuji Katsuda

Tsuneaki Ohashi

Masaaki Masuda

Takao Soma

Keiji Matsuhiro

Hirotake Yamada

Yasufumi Aihara

Minoru Machida

Takeyuki Mizuno

Issei Hayakawa

Hiroyuki Iwasaki

Masashi Harada

Hiroyuke Iwasaki

An assembly structure for facilitating assembly of laminated cells, for reducing the possibility of gas leakage and for preventing the reduction of generating efficiency of cells due to the gas leakage is provided. A plate-shaped electrochemical cell made of a ceramic material with a through hole formed therein is held by a holding member. The holding member is made of a ceramic material having a planar main body with a protruded portion. A first supply hole for supplying a first gas and a second supply hole for supplying a second gas are formed in the holding member. The planar main body of the holding member has a first sealing surface against a first surface of the electrochemical cell while the protruded portion is inserted into the through hole.

Holding member for holding an electrochemical cell, a holding substrate for the same, an electrochemical system and a connecting member for electrochemical cells

The invention provides an assembly structure for facilitating assembly of laminated cells, for reducing the possibility of gas leakage and for preventing the reduction of generating efficiency of cells due to gas leakage. In a disclosed embodiment, a plate-shaped electrochemical cellmade of a ceramic material with a through holeformed therein is held by a holding member. The memberis made of a ceramic material and has a plate-shaped main bodyof a shape of a flat plate and a protruded portion. A first supply holeA for supplying one gas and a second supply holeB for supplying the other gas are formed in the holding member. The main bodyhas a sealing surfaceagainst the one main faceof the cellwhile the protruded portionis inserted into the through hole

A halogen gas plasma-resistant member to be exposed to a halogen gas plasma, includes a main body of said member, and a corrosion-resistant film formed at least a surface of said main body, wherein a peeling resistance of the corrosive film to said main body is not less than 15 MPa.

Halogen gas plasma-resistive members and method for producing the same, laminates, and corrosion-resistant members

A honeycomb structural body is formed by a plurality of first wall portions, a plurality of second wall portions and a plurality of cross portions. Moreover, through holes of the honeycomb structural body are respectively defined by the first wall portion, the second wall portion and the cross portion. Further, a center portion of the first wall portion is formed by a sub material other than a main material which constitutes the honeycomb structural body. The honeycomb structural body having the structure mentioned above has excellent mechanical strength and spalling resistance.

Honeycomb structural body

A honeycomb-shaped electric element includes a honeycomb-shaped structural body, the honeycomb-shaped structural body including crossing partition walls defining a number of through-holes arranged thereamong, the through-holes being arranged in at least three lines extending laterally substantially in the same direction, wherein partition wall portions of the through-boles in the at least three lines are made of at least an electrically conductive material and an insulating material such that the partition wall portions of the through-holes made of the electrically conductive material and those of the insulating material are so arranged that a current flow passage may be continuously formed in the same direction as the continuous lines extend.

Electric elements

A sintered laminated structure including a plurality of ceramic layers made of ceramic materials different from one another, wherein each of the ceramic layers is provided with through-holes passing each of the ceramic layers.

Sintered laminated structures, electrochemical cells and process for producing such sintered laminated structures

A layered sintered body for an electrochemical cell which is a planar-type layered sintered body composed of an electrode and a separator stacked thereon, wherein a plurality of gas flow passages are formed by coupling grooves formed on the electrode and the separator. Even when this electrochemical cell is subjected to repetition of a cooling-heating cycle, an increase of internal resistance on and around the boundary between the separator and electrode can be restrained and layer separation and development of cracks at the joint boundary can be prevented.

Layered sintered body for electrochemical cells, electrochemical cell and process for manufacturing layered sintered body for electrochemical cells

A method of forming a film of boron carbide on a substrate is provided, which comprises the steps of forming the boron carbide film on a surface of a substrate by plasma spraying, and heating the film at 1100.about.2400.degree. C. in a non-oxidizing atmosphere, whereby boron oxide contained in the boron carbide film is removed.

Method of manufacturing a boron carbide film on a substrate

Sintered laminated structures, electrochemical cells and process for

Layered sintered body for electrochemical cells

A solid oxide fuel cell having an ion conductive solid electrolyte layer formed by a spraying method, wherein a thickness of the solid electrolyte layer is not less then 40 .mu.m and not more than 100 .mu.m, and a leakage amount of N.sub.2 gas of the solid electrolyte layer at room temperature is not more than 10.sup.-5 cc/g.second. A permeation coefficient of the solid electrolyte layer is preferably not more than 10.sup.-7 cm.sup.4 /g.second at room temperature. The solid electrolyte layer includes at least one metal element selected from manganese, iron, cobalt, nickel, copper and zinc, in an average amount of not less than 1 atom % and not more than 15 atom % based on a sum of amounts of all metal elements contained in the solid electrolyte layer.

Solid oxide fuel cells, a process for producing solid electrolyte films

A solid oxide fuel cell including at least one kind of an electrically conductive film formed by spraying and having a permeability constant of nitrogen gas being not more than 9.times.10.sup.-8 cm.sup.4 /g.sec. A process for producing a solid oxide fuel cell, including the steps of: forming a sprayed film on a substrate by spraying a material for the formation of an electrically conductive film, while a thickness of a sprayed film per one pass of a spraying gun is being suppressed to not more than 10 .mu.m, and then forming the electrically conductive film by thermally treating the sprayed film.

Solid oxide fuel cells and process for the production of the same

A method for producing interconnectors for electrically connecting unit cells of a solid electrolyte type fuel cell. An interconnector material such as a perovskite complexed oxide is thermally sprayed onto the surface of an electrode of a solid electrolyte type fuel cell by plasma thermal spraying process at a temperature of not lower than 1,250.degree. C. to form an interconnector, and heat treated to diminish the cracks and defects resulting from the plasma thermal spraying process.

Method for producing interconnector for solid electrolyte type fuel cell

A method for producing an airtight and thin lanthanum chromite film having a splendid electrical conductivity including providing an air electrode film on a porous ceramic substrate, thermally spraying a raw material for thermally spraying lanthanum chromite on a surface of the air electrode film to form a thermally sprayed film, and heat treating the thermally sprayed film to form an interconnector. The raw material for thermally spraying lanthanum chromite may contain a doping metal or metals, such as, copper, and zinc, etc. The heat treating is effected preferably at a temperature of at least 1,250.degree. C.

Method for increasing the electrical conductivity of a thermal sprayed

A first method for manufacturing a solid oxide film having a highly densified solid oxide film having a small thickness and an improved electric conductivity; and a second method for manufacturing a solid oxide fuel cell in which a solid oxide film formed on an air electrode or a fuel electrode is manufactured by the first method. The solid oxide fuel cell according to the present invention is capable of generating a high power. The solid oxide film is formed on a substrate in such manner that a solid oxide material is sprayed on the substrate to form a sprayed solid oxide film thereon; Then a solution of metal compound including at least one metal selected from a group of manganese, iron, cobalt, nickel, copper and zinc is impregnated into the sprayed solid oxide film; and the sprayed solid oxide film is subjected to a heat treatment in order to increase an airtightness of the film. It may be possible to use a material for spraying, in which 1.about.10 parts by weight of an oxide of said metal is contained, instead of the impregnation, or to obtain a material for spraying by mixing the compound powder containing the metal and the solid oxide material in a spray gun via separately arranged powder supply devices.

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Kasugai, Japan

Shigenori Ito