Conical tube type positive electrode support solid oxide fuel cell monomer and battery set

Abstract

The invention relates to a solid oxide fuel battery of taper-pipe anode support and battery group. Wherein, said battery comprises a porous anode support, a dense electrolyte film, and a porous cathode film. The porous anode support is in taper pipe shape whose one end mouth is large and another is small while the edge of small mouth is arc; the dense electrolyte film covers the outer edge of porous anode support; the cathode layer is at the upper layer of dense electrolyte between the arc edge of small mouth and the edge of large mouth. The battery group is formed by the outer edge of small mouth of said battery and the inner edge of big mouth of another inventive battery via the sealing material. The inventive battery has small size, high output power, easy production and the application of small SOFC electric pile. The cathode of said battery can be connected to the anode of another battery in series via sheathing one taper pipe on another taper pipe, with easy sealing.

Description

technical field [0001] The present invention relates to fuel cell technology, especially solid oxide fuel cell (or single cell) and a battery pack (or stack) of solid oxide fuel cell, specifically a conical tube type anode support Solid oxide fuel cell cells and stacks. Background technique [0002] A solid oxide fuel cell (SOFC) monomer (or single cell) is composed of an anode, a cathode, and an electrolyte sandwiched between the two electrodes. Area) is proportional, the open circuit voltage of each SOFC monomer is about 1V, and the working voltage is 0.7V. The SOFC battery pack (or electric stack) is composed of SOFC monomers through appropriate series and parallel connections. When SOFC works, fuel gas, such as hydrogen, needs to be provided to the anode, and oxidant gas, such as air, to the cathode. The fuel gas and oxidant gas generate electric current through electrochemical reaction, and the electric current passes through the external circuit and flows through th...

AI Technical Summary

Problems solved by technology

There is a conical tube SOFC design, the wall of the conical tube is straight. For the electrolyte-supported SOFC, the electrolyte is thick enough, and the position of the electrode can be a certain distance away from the edge of the conical tube opening. In the cathode of a battery cell When the anode of another battery cell is connected to each other, it will not cause a short circuit, but for the SOFC monomer supported by the anode, the electrolyte can only be attached to the anode support. If the tapered tube wall is still straight, when the batteries are connected, It will inevitably cause a short circuit, so that the battery cannot work

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