Current difference battery capable of remarkably generating voltage

Abstract

The invention discloses a current difference battery capable of remarkably generating voltage, an electrode made of two materials of aluminum and carbon is used for maintaining a stable interface potential difference, the current difference battery is constructed by referring to the reaction principle of a metal-sulfur battery, a reaction electrode A is directly sealed by two conductor contact surfaces, and a reaction electrode B is directly sealed by two conductor contact surfaces. The lithium sheet, the graphite and the electrolyte are used as contents; the induction electrode B uses an aluminum electrode and a carbon electrode as two contact points, and sulfur and carbon are mixed with an electrolyte to serve as a content; after the battery is assembled, the maximum voltage of 0.6 v can be generated, and the discharge phenomenon can be obviously observed.

Description

[0001] manual Technical Field

[0002] This invention belongs to the field of battery technology, and specifically relates to a current difference battery that can significantly generate voltage. Background Technology

[0003] Existing batteries include three types: primary cells, nuclear batteries, and supercapacitors. In 2024, a new type of battery emerged, which separated the positive and negative electrodes of a primary cell and connected them with wires. Because this type of battery did not involve ion movement between the positive and negative electrodes, it was initially called an electrolyte-free battery, with one electrode being the reaction electrode A and the other the induction electrode B. Subsequent research revealed that the electrolyte not only catalyzes the reaction during battery operation but also plays a role in moving effective ions to the target sites in both the reaction electrode A and the induction electrode B. Therefore, this battery was renamed the current differential battery based on the difference in current capacity between the two electrodes. The current differential battery in 2024 produced extremely low voltage, making it unsuitable for direct commercial use. This invention, by changing the structure and materials, increases the voltage of the current differential battery to the 0.1V–0.6V range, reaching a level suitable for commercial use. The current differential battery has advantages such as easy reaction control (high safety) and extremely fast charging speed (100% charging can be completed within 30 seconds), indicating a huge market potential. Attached Figure Description

[0004] exist Figure 1 In the diagram, 1 refers to the first conductor contact surface of reaction electrode A, 2 refers to the second conductor contact surface of reaction electrode A, 3 refers to the contents of reaction electrode A, and 4 refers to the insulating outer shell of reaction electrode A.

[0005] exist Figure 2 In the diagram, 5 refers to the aluminum contact surface of the induction electrode B, 6 refers to the carbon contact surface of the induction electrode B, 7 refers to the insulating outer shell of the induction electrode B, and 8 refers to the contents of the induction electrode B.

[0006] Figure 3 It is a curve showing the change of voltage and current over time during the first discharge.

[0007] Figure 4 It is a curve showing the change of voltage and current over time after charging and discharging. Summary of the Invention

[0008] The current-difference battery in this invention refers to the "electrolyte-free battery" that emerged in 2024.

[0009] In this invention, LiTFSI refers to lithium bis(trifluoromethanesulfonylimide), DOL refers to 1,3-dioxolane, DME refers to dimethyl ether, DMC refers to dimethyl carbonate, EC refers to ethylene carbonate, and DEC refers to diethyl carbonate.

[0010] In the reaction electrode A of this invention, the contents consist of a reducing agent, an oxidizing agent, and auxiliary materials. The reducing agent is composed of one or both of lithium and sodium, the oxidizing agent is composed of carbon, and auxiliary materials such as LiTFSI solution (using one or both of DOL or DME as solvent) or NaClO4 solution (using one or more of DMC, EC, and DEC as solvent) are added. Other materials can be added to optimize the battery. The mass percentage of the reducing agent, oxidizing agent, and auxiliary materials in the contents is greater than 0.1%.

[0011] The container for reaction electrode A uses a button cell casing. The contact surfaces of conductors 1 and 2 are formed by the positive and negative electrode shells of the battery casing, respectively. The container can also use other conductors... Figure 1 The structure is directly sealed. The materials of the contact surfaces of conductor 1 and conductor 2 can be the same type of conductor or different conductors; there are no requirements regarding the conductor materials. The contact surfaces of conductor 1 and conductor 2 are enclosed by an insulating outer shell, and they do not directly contact each other. There are no special requirements regarding the shape of reaction electrode A.

[0012] In the induction electrode B of this invention, the contents consist of a strong oxidizing substance, an induction carrier substance, and auxiliary materials.

[0013] Sulfur is used as the strong oxidizing agent, carbon is used as the inducing support, and LiTFSI solution (using one or both of DOL or DME as solvent) or NaClO4 solution (using one or more of DMC, EC, or DEC as solvent) are used as auxiliary materials. Other materials can also be added to optimize the battery. The mass percentage of the strong oxidizing agent, inducing support, and auxiliary materials in the contents is greater than 0.1%.

[0014] The carbon contact surface of the inducing electrode B is made of carbon, and the aluminum contact surface is made of metallic aluminum. The carbon and aluminum contact surfaces are connected by an insulating casing and do not make direct contact. There are no special requirements for the shape of the inducing electrode B.

[0015] By connecting the reaction electrode A and the induction electrode B in series in a circuit, it can be used as a battery.

[0016] During charging, the reaction electrode A and the induction electrode B are removed from the circuit. The reaction electrode A is connected to the negative terminal of the power supply, and the induction electrode B is connected to the positive terminal. The reaction electrode A and the induction electrode B are kept in an open circuit state. The charging voltage is greater than 0V, and the charging time is greater than 0 seconds. The higher the voltage, the less time is required.

[0017] Implementation Examples

[0018] Materials used:

[0019] LiTFSI solution (1.0MLiTFSIin DOL:DME=1:1vol%with 1%LiNO3)

[0020] Carbon rod (electrode graphite rod, 4mm in diameter and 100mm in length)

[0021] Graphite (common powder)

[0022] Sulfur-carbon composite positive electrode coated aluminum foil (active material sulfur content 75%)

[0023] Lithium foil (12mm diameter, 0.45mm thickness)

[0024] Aluminum foil

[0025] Battery casing

[0026] 1. Fabricate induction electrode B,

[0027] Take one of the above carbon rods and mark it into three parts: top, middle, and bottom. Leave 1 cm of the top part and scrape out a shallow groove in it. Wrap the copper wire part of the conductor around the groove. Leave 8 cm of the middle part and wrap it with insulating tape. Leave the bottom 0.5 cm untreated. This carbon rod will serve as the carbon electrode of the induction electrode.

[0028] Take 1cm 2 For the sulfur-carbon composite cathode coating, scrape off the active material and put it into a small beaker. Weigh 51mg of graphite and mix it with these active materials. Add 5 drops of LiTFSI solution and mix into a paste.

[0029] The paste is evenly applied to the lower part of the carbon rod, wrapped with aluminum foil, and the excess aluminum foil is rolled up along the carbon rod. After rolling, it is fixed with tape, and the extended aluminum foil is folded up to serve as the aluminum electrode of the induction electrode.

[0030] Let stand for 48 hours.

[0031] 2. Fabrication of reaction electrode A

[0032] Weigh 397 mg of graphite into a beaker, then add 40 drops of LiTFSI solution to the graphite and mix into a paste. Spread the graphite paste evenly onto the two negative electrode shells and two gaskets of the battery. Allow it to evaporate for 15 minutes before proceeding to the next step.

[0033] In the glove box operation step, add 3 drops of LiTFSI solution to the graphite paste on the negative electrode shell. Place the lithium sheet on the graphite paste, add 2 drops of LiTFSI solution to the lithium sheet, and place the gasket with the graphite paste-coated side facing the lithium sheet. Then place the spring contact and the positive electrode shell. After assembly, it can be used directly without the need for tooling. Take one reaction electrode A out of the glove box for use.

[0034] 3-cell battery pack.

[0035] Connect the negative electrode shell to the carbon electrode of the induction electrode B, the positive electrode shell to the negative terminal of the workstation, and the aluminum electrode of the induction electrode B to the positive terminal of the workstation. Use constant resistance discharge with a load set to 10000 ohms and observe and record the results. When the voltage drops to 0.09V, remove the battery for charging. During charging, disconnect the connection between the induction electrode B and the reaction electrode A. Connect the induction electrode B to the positive terminal of the constant voltage power supply and the reaction electrode A to the negative terminal of the constant voltage power supply. Charge with 26V for 30 seconds, then reconnect the workstation in the same way, observe and record the results.

[0036] Experimental Results and Analysis

[0037] The results of the first discharge are shown below. Figure 3

[0038] The results of the second discharge are shown below. Figure 4

[0039] Depend on Figure 3 and Figure 4 As can be seen, the first discharge ended at 0.09V, and after the circuit was disconnected and recharged, the voltage slowly rose to 0.13V and then slowly decreased.

[0040] As can be seen from the recorded images from the workstation, this method can generate a significant voltage, up to 0.6V or higher, allowing for normal discharge, and the battery can be charged using the open-circuit charging method.

Claims

1. A current-differential battery capable of significantly generating voltage, characterized in that, The contents of reaction electrode A consist of reducing substances, oxidizing substances, and auxiliary materials; The reducing agent consists of one or two of lithium and sodium, the oxidizing agent consists of carbon, and auxiliary materials such as LiTFSI solution (using one or two of DOL or DME as solvent) or NaClO4 solution (using one or more of DMC, EC, and DEC as solvent) are added. The mass percentage of the reducing agent, oxidizing agent, and auxiliary materials in the contents is greater than 0.1%.

2. A current-differential battery capable of significantly generating voltage, characterized in that, The contents of the induction electrode B consist of a strong oxidizing substance, an induction carrier substance, and auxiliary materials. Sulfur is used as the strong oxidizing agent, carbon is used as the inducing carrier, and LiTFSI solution (one or two of DOL or DME as solvent) or NaClO4 solution (one or more of DMC, EC, and DEC as solvent) is used as the auxiliary material. The mass percentage of the strong oxidizing agent, the inducing carrier, and the auxiliary material in the contents is greater than 0.1%. There are no special requirements for the morphology of the inducing electrode B.

3. A current-differential battery capable of significantly generating voltage, characterized in that, The carbon contact surface of the induction electrode B is made of carbon, and the aluminum contact surface of the induction electrode B is made of metallic aluminum.

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