Cement-based battery and method of making same

Abstract

The application provides a cement-based battery and a preparation method thereof, the cement-based battery comprising a conductive cement base and a plurality of battery bodies connected in series in the conductive cement base; the conductive cement base is cast by a cement-based electrolyte material, the cement-based electrolyte material comprises the following components in percentage by weight: cement 14.9-65.0%, conductive material 0.1-2.8%, fine aggregate 0-71.7%, water reducing agent 0-0.53%, and water 21.1-40%, and the fluidity of the cement-based electrolyte material is greater than or equal to 160 mm. The cement-based battery of the application comprises a plurality of battery bodies connected in series, the total energy storage capacity is improved, and stable current can be provided for a long time without the help of an external power supply, and the corresponding structural function can be undertaken without occupying additional space of a building. The preparation method of the application is simple, raw materials are easy to obtain, and economic benefits are high.

Description

Technical Field

[0001] This invention belongs to the field of concrete technology, and in particular relates to a cement-based battery and its preparation method. Background Technology

[0002] Cement-based materials, represented by concrete, are currently the most common civil engineering materials. Although their energy per unit volume is not high, their energy storage capacity is very high due to the large energy storage volume of buildings.

[0003] The conductivity of cement-based composite materials is mainly due to the addition of conductive materials, which form a conductive network within the concrete, or through tunneling effects, ionic conductivity, and other means, giving cement-based composite materials relatively good conductivity. Adding electrodes to conductive cement-based composite materials can create cement-based batteries, but currently, cement-based batteries release very low currents, making them difficult to apply in real-world situations.

[0004] Therefore, there is an urgent need for relevant solutions to address the above problems. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a cement-based battery to solve the problem of poor conductivity in existing cement-based batteries. In addition, this invention will also provide a method for preparing a cement-based battery.

[0006] To achieve the above objectives and other related objectives,

[0007] In a first aspect, the present invention provides a cement-based battery, comprising a conductive cement substrate and a plurality of battery cells connected in series within the conductive cement substrate; the conductive cement substrate is cast from a cement-based electrolyte material, the cement-based electrolyte material comprising, by weight percentage: cement 14.9%-65.0%, conductive material 0.1%-2.8%, fine aggregate 0-71.7%, water-reducing agent 0-0.53%, and water 21.1-40%, the cement-based electrolyte material having a flowability greater than or equal to 160 mm.

[0008] Preferably, the battery body includes an anode metal plate, a cathode metal plate, and a support disposed between the anode metal plate and the cathode metal plate.

[0009] Preferably, the anode metal plate is made of one of zinc, magnesium, and aluminum; the thickness of the anode metal plate is 0.5-4 mm.

[0010] Preferably, the cathode metal plate is made of one of copper, nickel, and manganese oxide; the thickness of the cathode metal plate is 0.5-4 mm.

[0011] Preferably, the support is an acrylic sheet with a thickness of 0.5-3mm.

[0012] Preferably, the conductive material is one of carbon black, carbon fiber, carbon nanotubes, or any combination thereof.

[0013] Preferably, the cement is silicate cement or ordinary silicate cement.

[0014] A second aspect of the present invention provides a method for preparing a cement-based battery, characterized by comprising the following steps:

[0015] Step 1: Preparation of cement-based electrolyte material;

[0016] Step 2: Pour a small amount of cement-based electrolyte material into the mold and level it. Place an anode metal plate on the upper surface of the cement-based electrolyte material, place the support, and continue to pour cement-based electrolyte material until it is flush with the upper surface of the support. Then, vibrate the mold.

[0017] Step 3: Lay out the cathode metal plate and vibrate it. The anode metal plate and the cathode metal plate form a battery body.

[0018] Step 4: Repeat steps 1 to 3 to form several battery cells connected in series, and obtain a rough product.

[0019] Step 5: After the cement-based electrolyte material reaches its final setting state, remove the mold and cure to obtain the cement-based battery.

[0020] Preferably, in steps two and three, the thickness of the cement-based electrolyte material added each time is no more than 20 mm.

[0021] As described above, the cement-based battery of the present invention has the following beneficial effects: The cement-based battery of the present invention comprises multiple battery cells connected in series, which improves the total energy storage capacity; it can provide a stable current for a longer period of time without the aid of an external power source; and it undertakes the corresponding structural functions without occupying additional space in a building. The preparation method of the present invention is simple, the raw materials are readily available, and it is highly economical. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0023] Unless otherwise specified, the experimental methods used in the following examples are conventional methods; unless otherwise specified, the reagents and materials used in the following examples are commercially available.

[0024] This invention provides a cement-based battery, comprising a conductive cement substrate and a plurality of battery cells connected in series within the conductive cement substrate. The conductive cement substrate is cast from a cement-based electrolyte material, which, by weight percentage, comprises the following components: cement 14.9%-65.0%, conductive material 0.1%-2.8%, fine aggregate 0-71.7%, water-reducing agent 0-0.53%, and water 21.1-40%. The flowability of the cement-based electrolyte material is greater than or equal to 160 mm. The battery cells include an anode metal plate, a cathode metal plate, and a support structure disposed between the anode metal plate and the cathode metal plate.

[0025] In embodiments of the present invention:

[0026] The test method for the flowability of the cement-based electrolyte material shall be in accordance with JGJ / T70-2009.

[0027] The method for testing the current of the cement-based battery is to connect an ammeter and a 50Ω resistor in series outside the battery.

[0028] The cement is silicate cement with a strength grade of 42.5;

[0029] The fine aggregate is natural sand, wherein the mud content of the natural sand is ≤3wt% and the fineness modulus is approximately 2.2-3.2;

[0030] The water-reducing agent is a polycarboxylate liquid water-reducing agent. Example

[0031] A cement-based battery includes a conductive cement substrate and a plurality of battery cells connected in series within the conductive cement substrate; the conductive cement substrate is formed by casting a cement-based electrolyte material, which, by weight percentage, comprises the following components:

[0032] Cement 22.0%

[0033] Carbon black 1.1%

[0034] Fine aggregate 65.85%

[0035] Water-reducing agent 0.05%

[0036] Water 11.0%

[0037] The fluidity of this cement-based electrolyte material is 162 mm.

[0038] The anode metal plate is made of aluminum and has a thickness of 1 mm.

[0039] The cathode metal plate is made of copper and has a thickness of 1 mm.

[0040] The support structure is made of acrylic sheet with a thickness of 2mm.

[0041] The preparation method of the above-mentioned cement-based battery material includes the following steps:

[0042] S1. Mix fine aggregate, cement, carbon black, and water-reducing agent evenly, then add water and stir until a paste is formed;

[0043] S2. Pour a small amount of cement-based electrolyte material into the mold and level it. Then, place an anode metal plate on the surface of the cement-based electrolyte material, add a support, pour in the cement-based electrolyte material again, and vibrate it.

[0044] S3. After the surface is flat, place a cathode metal plate on it and vibrate it;

[0045] S4. Repeat the above operation, and lay a certain number of metal plates as needed, so that the batteries are connected in series between each group of metal plates, and a rough product is obtained.

[0046] S5. After the cement-based material reaches its final set state, the mold is removed to obtain the cement-based battery.

[0047] Tests showed that it can stably release 30mA current for 24 hours under an external load resistance of 50Ω. Example 1

[0048] A cement-based battery includes a conductive cement substrate and a plurality of battery cells connected in series within the conductive cement substrate; the conductive cement substrate is formed by casting a cement-based electrolyte material, which, by weight percentage, comprises the following components:

[0049] Cement 21.0%

[0050] Carbon black 1.2%

[0051] Fine aggregate 63.1%

[0052] Water-reducing agent 0

[0053] Water 14.7%

[0054] The fluidity of this cement-based electrolyte material is 175 mm.

[0055] The anode metal plate is made of zinc and has a thickness of 1 mm.

[0056] The cathode metal plate is made of copper and has a thickness of 1 mm.

[0057] The support structure is made of acrylic sheet with a thickness of 2mm.

[0058] The preparation method of the above-mentioned cement-based battery material includes the following steps:

[0059] S1. Mix fine aggregate, cement, and carbon black evenly, then add water and stir until a paste is formed;

[0060] S2. Pour a small amount of cement-based electrolyte material into the mold and level it. Then, lay an anode metal plate on the surface of the cement-based material, add a support, pour in the cement-based electrolyte material again, and vibrate it.

[0061] S3. After the surface is flat, place a cathode metal plate on it and vibrate it;

[0062] S4. Repeat the above operation, and lay a certain number of metal plates as needed, so that the batteries are connected in series between each group of metal plates, and a rough product is obtained.

[0063] S5. After the cement-based material reaches its final set state, the mold is removed to obtain the cement-based battery.

[0064] Tests showed that it can stably release 54mA current for 24 hours under an external load resistance of 50Ω. Example 2

[0065] A cement-based battery includes a conductive cement substrate and a plurality of battery cells connected in series within the conductive cement substrate; the conductive cement substrate is formed by casting a cement-based electrolyte material, which, by weight percentage, comprises the following components:

[0066] Cement 64.5%

[0067] Carbon black 3.2%

[0068] Water 32.3%

[0069] The fluidity of the cement-based battery electrolyte material is 200 mm.

[0070] The anode metal plate is made of zinc and has a thickness of 1 mm.

[0071] The cathode metal plate is made of copper and has a thickness of 1 mm.

[0072] The support structure is made of acrylic sheet with a thickness of 2mm.

[0073] The preparation method of the above-mentioned cement-based battery material includes the following steps:

[0074] S1. Mix cement and carbon black evenly, then add water and stir until a paste is formed;

[0075] S2. Pour a small amount of cement-based electrolyte material into the mold and level it. Then, lay an anode metal plate on the surface of the cement-based material, add a support, pour in the cement-based electrolyte material again, and vibrate it.

[0076] S3. After the surface is flat, place a cathode metal plate on it and vibrate it;

[0077] S4. Repeat the above operation, and lay a certain number of metal plates as needed, so that the batteries are connected in series between each group of metal plates, and a rough product is obtained.

[0078] S5. After the cement-based material reaches its final set state, the mold is removed to obtain the cement-based battery.

[0079] Tests showed that it can stably release 150mA current for 24 hours under an external load resistance of 50Ω.

[0080] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A cement-based battery, characterized by, The device includes a conductive cement base and several battery cells connected in series within the conductive cement base; the conductive cement base is cast from a cement-based electrolyte material, which, by weight percentage, comprises the following components: The composition includes 14.9%-65.0% cement, 0.1%-2.8% conductive material, 0-71.7% fine aggregate, 0-0.53% water-reducing agent, and 21.1-40% water. The fluidity of the cement-based electrolyte material is greater than or equal to 160 mm.

2. A cement-based battery as claimed in claim 1, wherein, The battery body includes an anode metal plate, a cathode metal plate, and a support body disposed between the anode metal plate and the cathode metal plate.

3. A cement-based battery as claimed in claim 2, wherein, The anode metal plate is made of one of zinc, magnesium, or aluminum; the thickness of the anode metal plate is 0.5-4 mm.

4. A cement-based battery as claimed in claim 2, wherein, The cathode metal plate is made of one of copper, nickel, or manganese oxide; the thickness of the cathode metal plate is 0.5-4 mm.

5. A cement-based battery as claimed in claim 2, wherein, The support is an acrylic sheet with a thickness of 0.5-3mm.

6. A cement-based battery as claimed in claim 1, wherein, The conductive material is one of carbon black, carbon fiber, carbon nanotubes, or any combination thereof.

7. A cement-based battery as described in claim 1, characterized in that, The cement is silicate cement or ordinary silicate cement.

8. A method for the production of a cement-based battery for the production of a cement-based battery according to any one of claims 1 to 7, characterized in that Includes the following steps: Step 1: Preparation of cement-based electrolyte material; Step 2: Pour a small amount of cement-based electrolyte material into the mold and level it. Place an anode metal plate on the upper surface of the cement-based electrolyte material, place the support, and continue to pour cement-based electrolyte material until it is level with the upper surface of the support. Then, vibrate the mold. Step 3: Lay out the cathode metal plate and vibrate it. The anode metal plate and the cathode metal plate form a battery body. Step 4: Repeat steps 1 to 3 to form several battery cells connected in series, and obtain a rough product. Step 5: After the cement-based electrolyte material reaches its final setting state, remove the mold and cure to obtain the cement-based battery.

9. A method of making a cement-based battery as claimed in claim 8, wherein, In steps two and three, the thickness of the cement-based electrolyte material added each time shall not exceed 20 mm.