Abstract: The present invention provides a manifold insert having a plurality of distribution guides which reduce output voltage deviation due to flow instability between unit cells and prevent local flow instability of electrodes by stably distributing the flow of fluid (such as air, hydrogen, and coolant) supplied to a fuel cell stack, thereby maintaining a stable performance of the unit cells, and a fuel cell stack comprising the same.

Abstract: The present invention provides a fuel cell separator, in which a vortex generating structure is formed on the surface of a channel of the separator to induce a vortex of fluid (i.e., hydrogen and air) flowing through the channel, thus facilitating the supply of reactant gases and the removal of water droplets from a gas diffusion layer (GDL).

Abstract: The present invention provides a humidifier, which is used as an auxiliary humidifier of a fuel cell together with an existing gas-to-gas humidifier to improve humidification performance in a low efficiency region of the gas-to-gas humidifier, thus increasing the output of the fuel cell and providing high efficiency operation.

Abstract: The present invention provides a local hydrophilic gas diffusion layer configured to enhance the water removal performance of a fuel cell For this purpose, the present invention provides a gas diffusion layer in which a region under each of a pair of lands, which receives a clamping pressure of the fuel cell stack, is subjected to local hydrophilic treatment by a simple process, thereby enhancing the water removal performance of the fuel cell stack. In particular, the local hydrophilic gas diffusion layer has a first region under each land of the separator which receives the clamping pressure; and a second region under the gas channel of the separator, wherein the first region is subjected to hydrophilic treatment.

Abstract: The present invention provides a surface pressure controlling device for a fuel cell stack, in which an inflator capable of being expanded by pneumatic or hydraulic pressure is mounted in an end plate so as to control the surface pressure required for the assembly of the fuel cell stack to be maintained above a predetermined level.

Abstract: The present invention features a fuel cell stack that preferably includes an electricity generating assembly having a plurality of unit cells that are suitably disposed one after another; a pair of end plates pressedly disposed respectively at upper and lower ends of the electricity generating assembly; and a joining device suitably engaging the end plates by a rope, where pressure is applied to the electricity generating assembly by means of tension of the rope, and the length and tension of the rope is suitably controlled.

Abstract: The present invention relates to ceramic-NiO composite powders which can be used to form ceramic-NiO composite body anodes. These anodes possess an interpenetrating network structure and can be used in solid oxide fuel cell (SOFC) by The present invention also describes methods of preparing these powder, anodes and fuel cells.

Abstract: The present invention relates to ceramic-NiO composite powders which can be used to form ceramic-NiO composite body anodes. These anodes possess an interpenetrating network structure and can be used in solid oxide fuel cell (SOFC) by The present invention also descibes methods of preparing these powder, anodes and fuel cells.