Novel carbon fuel cell device

Abstract

The utility model relates to a novel carbon fuel cell device, which belongs to the technical field of carbon fuel cells and is internally provided with an anode accommodating cavity and a cathode accommodating cavity, the anode accommodating cavity is communicated with the cathode accommodating cavity, an anion diaphragm is arranged at the joint of the anode accommodating cavity and the cathode accommodating cavity, and the cathode accommodating cavity is separated from the anode accommodating cavity through the diaphragm; a positive electrode feeding hole and a negative electrode feeding hole are respectively formed in the tops of the positive electrode accommodating cavity and the negative electrode accommodating cavity, an embedded accommodating cavity is formed in the negative electrode accommodating cavity, and a slag discharging hole is formed in the bottom of the negative electrode accommodating cavity. The carbon fuel cell device disclosed by the utility model is suitable for a carbon-sulfur fuel cell, the negative electrode accommodating cavity in the carbon fuel cell device is used for accommodating negative electrode fused salt, the positive electrode accommodating cavity is used for accommodating liquid sulfur, and the embedded accommodating cavity in the negative electrode accommodating cavity is convenient for adding negative electrode fuel carbon, so that the negative electrode fuel carbon can be fully mixed with the negative electrode fused salt; and the contact area of sulfur ion reaction in the cathode molten salt is increased, so that the whole carbon fuel cell is simple in implementation method and high in energy conversion rate.

Description

Technical Field

[0001] The utility model relates to a novel carbon fuel cell device, belonging to the technical field of carbon fuel cells. Background Art

[0002] Social and economic development has become increasingly reliant on electricity, evolving from thermal power generation to nuclear power, photovoltaic power generation, hydropower, and wind power. Currently, energy utilization is becoming increasingly diverse. Thermal power generation has also grown from nearly 100% to still account for over half of all electricity generation. However, thermal power generation still faces an unavoidable challenge: energy utilization. Currently, thermal power generation still utilizes the method of converting thermal energy generated by carbon combustion into steam energy, which is then converted into mechanical energy for a turbine, and then from mechanical energy into electrical energy. During this conversion process, nearly half of the thermal energy generated by carbon combustion is lost. The direct energy conversion rate of thermal power generation is only 50%. This does not include energy losses during coal mining and transportation. Using carbon fuel cells, theoretically, energy utilization rates exceeding 100% can be achieved. However, carbon fuel cells require precious metal catalysts to promote the electrochemical reaction. These catalysts, such as platinum and ruthenium, are expensive and easily poisoned. Utility Model Content

[0003] In order to improve the defects of the electrolyte solution used in the existing carbon fuel cell device, which is high in cost and easy to fail during use, the present application provides a battery device suitable for a carbon-sulfur fuel cell, which has a positive electrode accommodating chamber and a negative electrode accommodating chamber, the positive electrode accommodating chamber is connected to the negative electrode accommodating chamber, and an anion diaphragm is provided at the connection point, and the negative electrode accommodating chamber is separated from the positive electrode accommodating chamber by the diaphragm; a positive electrode feeding port and a negative electrode feeding port are respectively provided at the top of the positive electrode accommodating chamber and the negative electrode accommodating chamber, an embedded accommodating chamber is provided in the negative electrode accommodating chamber, a by-product collection pipe is also provided at the top of the negative electrode accommodating chamber of the battery device, and a slag discharge port is provided at the bottom of the negative electrode accommodating chamber.

[0004] Furthermore, the negative electrode feeding port is located directly above the embedded accommodating cavity.

[0005] Furthermore, the embedded accommodating cavity is a honeycomb structure.

[0006] Furthermore, the bottom of the negative electrode reaction chamber of the battery device is a radially tapered inverted cone structure, and the slag discharge port is located at the tip of the inverted cone.

[0007] Furthermore, the top of the negative electrode reaction chamber of the battery device is a radially tapered conical structure, and the feeding head is located at the tip of the conical structure.

[0008] Furthermore, both the positive electrode accommodating chamber and the negative electrode accommodating chamber of the battery device are provided with heating devices.

[0009] In summary, this application has the following beneficial effects:

[0010] First, the present application uses fuel carbon as the negative electrode material of the battery material, and converts the fuel carbon into electrical energy in the negative electrode viewing area. The product is carbon sulfide, which consumes the fuel carbon and sulfur, thereby achieving continuous power generation. The overall carbon fuel cell implementation method is simple and has a high energy conversion rate.

[0011] Second, the carbon fuel cell device of the present application is suitable for carbon-sulfur fuel cells, wherein the negative electrode receiving chamber is used to hold the negative electrode molten salt, and the positive electrode receiving chamber is used to hold liquid sulfur. The embedded receiving chamber provided in the negative electrode receiving chamber facilitates the addition of negative electrode fuel carbon, so that the negative electrode fuel carbon can be fully mixed with the negative electrode molten salt, thereby increasing the contact area for the sulfur ion reaction in the negative electrode molten salt;

[0012] Third, the present application optimizes the composition of fuel carbon. By selecting solid carbon or carbon-containing gas, the adaptability of the carbon fuel cell device of the present application to fuel is improved. When using carbon-containing gas, there is no need to add additional catalyst materials, thereby improving fuel efficiency and reducing usage costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic structural diagram of the carbon fuel cell device of the utility model;

[0015] Among them: 1. Negative electrode feeding port; 2. Embedded accommodating chamber; 3. Negative electrode accommodating chamber; 4. Positive electrode feeding port; 5. Positive electrode accommodating chamber; 6. Diaphragm; 7. By-product collection pipe; 8. Slag discharge port. DETAILED DESCRIPTION

[0016] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0017] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular also includes the plural. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0018] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] like Figure 1 A novel carbon fuel cell device is shown, which has a positive electrode accommodating chamber 5 and a negative electrode accommodating chamber 3. The negative electrode accommodating chamber 3 is used to hold negative electrode molten salt, and the positive electrode accommodating chamber 5 is used to hold liquid sulfur. In this embodiment, the negative electrode molten salt includes a mixture of one or more of Na3AlF6 molten salt, K3AlF6 molten salt, and Li3AlF6 molten salt. The positive electrode accommodating chamber 5 is connected to the negative electrode accommodating chamber 3, and an anion diaphragm 6 is provided at the connection. The diaphragm 6 separates the negative electrode molten salt in the negative electrode accommodating chamber 3 from the liquid sulfur in the positive electrode accommodating chamber 5, and at the same time provides liquid sulfur in the positive electrode accommodating chamber 5. 2- It moves through the diaphragm 6 into the negative electrode accommodating chamber 3. The battery device is provided with a positive electrode feeding port 4 and a negative electrode feeding port at the top of the positive electrode accommodating chamber 5 and the negative electrode accommodating chamber 3, respectively. The negative electrode feeding port is located directly above the embedded accommodating chamber 2, which is convenient for adding negative electrode fuel carbon to the embedded accommodating chamber 2 of the negative electrode accommodating chamber 3; the positive electrode feeding port 4 is convenient for adding positive electrode fuel sulfur to the positive electrode accommodating chamber 5. A by-product collection pipe 7 is also provided on the top of the negative electrode accommodating chamber 3 of the battery device for collecting the by-product gas C2S. In this embodiment, the negative electrode fuel is carbon powder. In other embodiments, the negative electrode fuel can be not only solid carbon but also a carbon-containing gas.

[0020] The positive electrode accommodating chamber 5 contains a positive electrode current collector. The negative electrode accommodating chamber 3 contains a honeycomb electrode, which has an embedded accommodating chamber 2 for holding carbon fuel. The embedded accommodating chamber 2 has a honeycomb structure, so that the carbon fuel in the embedded accommodating chamber 2 can be fully fused with the negative electrode molten salt.

[0021] The bottom of the negative electrode accommodating chamber 3 has a slag discharge port 8. The bottom of the negative electrode reaction chamber of the battery device is a radially tapered inverted cone structure, and the slag discharge port 8 is located at the tip of the inverted cone to facilitate the deposition and discharge of the waste.

[0022] The top of the negative electrode reaction chamber of the battery device is a radially tapered conical structure, and the feeding port is located at the tip of the conical structure, which facilitates the feeding of the negative electrode fuel into the embedded accommodating cavity 2.

[0023] The positive electrode accommodating chamber 5 and the negative electrode accommodating chamber 3 of the battery device are both provided with heating devices.

[0024] The steps for using the carbon fuel cell device using the aforementioned molten salt electrolyte are as follows:

[0025] The prepared negative electrode molten salt is poured into the negative electrode accommodating chamber 3 of the battery device, and liquid sulfur is added to the positive electrode accommodating chamber 5 at the same time. The heating device is started to insulate the battery device. The positive electrode of the external appliance is connected to the positive electrode current collector of the battery device, and the negative electrode of the external appliance is connected to the honeycomb electrode. The positive electrode fuel sulfur powder is continuously transported into the liquid sulfur and the negative electrode fuel carbon powder is continuously transported into the embedded accommodating chamber 2 to achieve discharge to the external appliance.

[0026] During the discharge process, the positive electrode sulfur molecules are adsorbed onto the positive electrode current collector, gaining electrons to generate sulfur ions. The reaction formula is as follows:

[0027] S+2e - =S 2- Formula (1)

[0028] (3) The sulfur ions are then transferred to the negative electrode through the anion separator 6 and the negative electrode molten salt electrolyte, and react with carbon electrochemically to generate carbon dioxide and electrons. The reaction formula is as follows:

[0029] 2S - +C=CS 2 +2e - Formula (2)

[0030] Through the reactions of formula (1) and formula (2), fuel carbon and sulfur are consumed to generate electricity, thereby achieving continuous electricity generation by the molten salt electrolyte carbon fuel cell.

[0031] The battery device of the present invention is suitable for use in carbon-sulfur fuel cells. It uses fuel carbon as the negative electrode material of the battery. The fuel carbon converts electrons into electrical energy in the negative electrode chamber 3, producing carbon sulfide as the product. This consumes the fuel carbon and sulfur, thereby achieving continuous power generation. The overall carbon fuel cell implementation method is simple and has a high energy conversion rate. The cryolite molten salt used as the electrolyte in this application has excellent conductivity, facilitating current transfer and the electrolysis process. Furthermore, the cryolite molten salt is not easily decomposed during the electrolysis process, thereby ensuring the stability of the electrolysis process and the purity of the product, meeting the requirements for use as an electrolyte material in carbon fuel cells. This application optimizes the composition of the fuel carbon. By selecting solid carbon or carbon-containing gas, the fuel adaptability of the carbon fuel cell device of this application is improved. When using carbon-containing gas, the addition of additional catalyst materials is unnecessary, thereby improving fuel efficiency and reducing operating costs. This specific embodiment is merely an explanation of the present application and is not intended to limit the present application. After reading this specification, those skilled in the art may make modifications to this embodiment as needed that do not contribute to an inventive step. However, as long as they fall within the scope of the claims of this application, they are protected by patent law.

Claims

1. A novel carbon fuel cell device, characterized in that: The battery device comprises a positive electrode accommodating chamber (5) and a negative electrode accommodating chamber (3), wherein the positive electrode accommodating chamber (5) is communicated with the negative electrode accommodating chamber (3), and an anion diaphragm (6) is provided at the connection point, and the negative electrode accommodating chamber (3) is separated from the positive electrode accommodating chamber (5) by the diaphragm (6); a positive electrode feeding port (4) and a negative electrode feeding port (1) are provided at the top of the positive electrode accommodating chamber (5) and the negative electrode accommodating chamber (3), respectively; an embedded accommodating chamber (2) is provided in the negative electrode accommodating chamber (3); a by-product collecting pipe (7) is further provided at the top of the negative electrode accommodating chamber (3) of the battery device, and a slag discharge port (8) is provided at the bottom of the negative electrode accommodating chamber (3).

2. A novel carbon fuel cell device according to claim 1, characterized in that: The negative electrode feeding port (1) is located directly above the embedded accommodating cavity (2).

3. A novel carbon fuel cell device according to claim 1, characterized in that: The embedded accommodating cavity (2) is a honeycomb structure.

4. A novel carbon fuel cell device according to claim 1, characterized in that: The bottom of the negative electrode reaction chamber of the battery device is a radially tapered inverted cone structure, and the slag discharge port (8) is located at the tip of the inverted cone.

5. A novel carbon fuel cell device according to claim 1, characterized in that: The top of the negative electrode reaction chamber of the battery device is a radially tapered conical structure, and the feeding port (4) is located at the tip of the conical structure.

6. A novel carbon fuel cell device according to claim 1, characterized in that: The positive electrode accommodating chamber (5) and the negative electrode accommodating chamber (3) of the battery device are both provided with heating devices.

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