Korea Institute of Energy Research

Korea Advanced Institute of Science and Technology

Jong-Hee Kim

Rak-Hyun Song

Dong-Ryul Shin

Byung-Tae Ahn

Tak-Hyun Lim

Dong-You Chung

Huy-Jeong Son

Yoon-Chang Kim

Do-Kyung Kim

A sealing element and a sealing method for sealing both ends of an anode-supported tubular solid oxide fuel cell. The sealing element utilizes a coupling tube having one end opened to an exterior and a second end with a perforation hole, in which the coupling tube is formed with an internal cavity having a shape corresponding to an external appearance of an end portion of a fuel cell. A flow tube having a hollow section axially extends outwards from the second end of the coupling tube while communicating with the perforation hole. The sealing method involves cleaning the sealing element and fuel cell, surrounding an outer peripheral surface of an electrolyte layer on the ends of the fuel cell with a metallic filler material, inserting the fuel cell in a connection tube of the sealing element, heating and melting the filler material, and solidifying the melted filler material.

Sealing element for anode-supported tubular solid oxide fuel cell and sealing method using the same

An anode-supported flat-tubular solid oxide fuel cell stack includes a plurality of fuel cells and a plurality of connector plates. Each of the fuel cells includes a supported tube having semi-cylinder parts and plate parts, a connector coated on an upper plate of the supported tube as a way to be positioned at the center of the upper plate, an electrolyte layer partly coated on an external surface of the supported tube except for a portion of the supported tube coming into contact with the connector, and an air electrode coated on an external surface of the electrolyte layer. Each of the connector plates includes a lower connector plate, middle connector plates, and an upper connector plate. A plurality of gas channels are formed on the middle and lower connector plates. The anode-supported flat-tubular solid oxide fuel cell stack has a large capacity, improved power density, and reduced production costs.

Anode-supported flat-tubular solid oxide fuel cell stack and fabrication method of the same

The present invention relates to a process for preparing a polycrystalline silicon thin film comprising a step of microwave annealing and crystallization of an amorphous thin film of silicon semiconductor, silicon semiconductor added with impurities, IV family semiconductor comprising Si alloy such as Si &minus; Ge , III-V family and II-VI family semiconductor. The process for preparing polycrystalline silicon thin film of the present invention comprises the steps of: immersing a washed substrate into a deposition equipment and heating the substrate; depositing an amorphous or microcrystalline silicon thin film on the substrate; and, annealing the deposited thin film employing microwave for crystallization.

Process for preparing a polycrystalline silicon thin film

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Taejon, South Korea

Jong-Hee Kim