Two-electrolyte direct carbon fuel cell and assembling method thereof

Abstract

The invention discloses a two-electrolyte direct carbon fuel cell and an assembling method thereof, which relate to the technical field of fuel cells. The two-electrolyte direct carbon fuel cell comprises an anode part, a cathode part, and a carbonate layer and a solid oxide layer which are positioned between the anode part and the cathode layer and serve as two electrolytes, wherein the anode part comprises a carbon substrate layer and a porous anode plate; the cathode part is a porous cathode plate; the solid oxide layer is positioned between the porous anode plate and the porous cathode plate; and the carbonate layer is positioned between the solid oxide layer and the porous anode plate. The two-electrolyte direct carbon fuel cell and the assembling method thereof realize a device using the solid oxide layer and the molten carbonate layer at the same time in the same DCFC battery and increase the area of an anode reaction, and simultaneously, the anode carbon substrate layer can be supplied continuously.

Description

technical field [0001] The present invention relates to a device and a manufacturing method in the field of fuel cell technology, in particular to a dual-electrolyte direct carbon fuel cell based on a molten carbonate layer and a solid oxide layer and an assembly method thereof. Background technique [0002] A fuel cell is a device that directly converts the chemical energy in fuel and oxidant into electrical energy, and has become one of the research hotspots at home and abroad in recent years. With the deepening of research, the types of fuel cells are becoming more and more extensive. Direct Carbon Fuel Cell (DCFC) uses solid carbon as fuel and interacts with the oxidant air of the cathode at high temperature to form a primary battery power generation device. DCFC mainly has the following advantages: high fuel chemical energy utilization rate, theoretical thermal efficiency up to 100%, can directly use solid carbon as fuel (coal, biomass carbon, and carbon deposits in pet...

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Problems solved by technology

[0004] The DCFC in which the solid oxide layer and the molten carbonate layer are electrolytes involved in the above-mentioned prior art uses the two electrolytes in two different batteries, and there are inherent disadvantages of these two batteries

For example, DCFC with a solid oxide layer as the electrolyte, because it is an all-solid-state device, causes the electrode reaction of the anode to only occur at the contact interface between the electrolyte and the anode, so that the active area of ​​the electrode reaction is limited, making it difficult to improve the performance of the battery.

DCFC with molten carbonate layer as electrolyte, although the molten salt can penetrate into the inside of the anode, but at high temperature, the continuous feeding of the anode becomes very difficult, and it is difficult to realize the continuous operation and power generation of the battery

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