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Rechargeable aqueous zinc-manganese battery and assembling method thereof

A zinc-manganese battery and assembly method technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems that the results cannot be further enlarged, limit the development of AR-Zn/Mn batteries, and the energy storage mechanism is wrong, etc., to achieve Low price, reduced process difficulty, and improved battery performance

Pending Publication Date: 2022-04-08
SOUTHWEST UNIVERSITY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0009] However, previous studies on the positive electrode of AR-Zn / Mn battery system have focused on MnO 2 In terms of electrode materials, although certain achievements have been made in the laboratory, the wrong understanding of the energy storage mechanism prevents these achievements from being further amplified, thus limiting the development of AR-Zn / Mn batteries

Method used

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  • Rechargeable aqueous zinc-manganese battery and assembling method thereof
  • Rechargeable aqueous zinc-manganese battery and assembling method thereof
  • Rechargeable aqueous zinc-manganese battery and assembling method thereof

Examples

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Effect test

Embodiment 1

[0048] A rechargeable water system zinc-manganese battery, the zinc-manganese battery is assembled as follows:

[0049] (1) Preparation of positive electrode sheet: Mix commercial basic zinc sulfate powder, acetylene black and polyvinylidene fluoride (PVDF) according to the mass ratio of 7:2:1, and then mix the solid mass and liquid mass ratio at 1 : 1 in the case of nitrogen methyl pyrrolidone, mixed and ground evenly into a viscous slurry as the positive electrode active material, and then the slurry is coated on the surface of a 0.02mm thick smooth and clean titanium foil, 80 ° C degree oven After drying, the basic zinc sulfate electrode is obtained as the positive pole piece;

[0050] (2) Assembly: Use the basic zinc sulfate electrode as the positive electrode, the 0.05mm thick clean and smooth metal zinc foil as the negative electrode, and the 1mm thick glass fiber diaphragm as the diaphragm, and assemble according to the positive electrode / diaphragm / negative electrode as...

Embodiment 6

[0073] A rechargeable water system zinc-manganese battery, the zinc-manganese battery is assembled as follows:

[0074] (1) Preparation of positive electrode sheet: Mix commercial basic zinc sulfate powder, carbon nanotubes and sodium alginate in a mass ratio of 9:0.1:0.1, and then mix them in a solid mass to liquid mass ratio of 1:0.01 Add it into water under normal conditions, mix and grind it into a viscous slurry as the positive electrode active material, and then apply the slurry on the surface of a smooth and clean copper foil with a thickness of 0.02mm, and dry it in an oven at 80°C to obtain basic sulfuric acid The zinc electrode is the positive pole piece;

[0075] (2) Assembly: Use the basic zinc sulfate electrode as the positive electrode, the 0.05mm thick clean and smooth metal zinc foil as the negative electrode, and the 1mm thick filter paper as the diaphragm, and assemble according to the positive electrode / diaphragm / negative electrode assembly method;

[0076]...

Embodiment 7

[0078] A rechargeable water system zinc-manganese battery, the zinc-manganese battery is assembled as follows:

[0079] (1) Preparation of positive pole piece: commercial basic zinc sulfate powder, conductive carbon black (Super P) and styrene-butadiene rubber are mixed according to the ratio of mass ratio 1:1:1, and then the mass ratio of solid mass to liquid is Add it to methanol at a ratio of 1:100, mix and grind it into a viscous slurry as the positive electrode active material, and then apply the slurry on the surface of a smooth and clean carbon felt with a thickness of 0.02mm, and dry it in an oven at 80°C Finally, the basic zinc sulfate electrode is obtained as the positive pole piece;

[0080](2) Assembly: Use the basic zinc sulfate electrode as the positive electrode, the clean and smooth metal zinc foil with a thickness of 0.05mm as the negative electrode, and the non-woven fabric with a thickness of 1mm as the diaphragm, and assemble according to the assembly metho...

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Abstract

The invention relates to a rechargeable aqueous zinc-manganese battery and an assembling method thereof, and belongs to the technical field of zinc-manganese battery preparation. According to the zinc-manganese battery disclosed by the invention, any one or more of basic zinc sulfate, zinc oxide and magnesium oxide combined with calcium oxide are used as a positive electrode active material in the zinc-manganese battery, so that a novel rechargeable aqueous zinc-manganese battery without a MnO2 positive electrode is formed. According to the zinc-manganese battery disclosed by the invention, the positive electrode active material (oxide such as zinc oxide, magnesium oxide or calcium oxide) and the electrolyte are subjected to dissolution reaction to induce the basic zinc sulfate to be deposited on the surface of the electrode, and then the basic zinc sulfate induced deposition dissolution reaction is generated, so that the limitation of a MnO2 material is thoroughly eliminated; the active substance is added into the solution in the form of Mn < 2 + >, so that the activity can be greatly improved, the used positive electrode active material has the advantages of low price, safety, no pollution and no limitation of electrochemical properties by a crystal structure and a specific surface area, the production cost and the process difficulty of the rechargeable aqueous zinc-manganese battery are further reduced, and the battery performance is improved.

Description

technical field [0001] The invention belongs to the technical field of zinc-manganese battery preparation, and relates to a rechargeable water-system zinc-manganese battery and an assembly method thereof. Background technique [0002] The over-exploitation and use of traditional fossil energy has brought serious environmental and climate problems, which poses serious challenges to the sustainable development of human beings. In this context, in September 2020, China announced to the world at the United Nations General Assembly that China will achieve "carbon peak" by 2030, and then continue to reduce carbon emissions, and achieve "carbon neutrality" by 2060. long-term development goals. Based on this, the use of renewable clean energy (solar energy, wind energy, tidal energy and geothermal energy, etc.) to gradually replace the dominant position of traditional fossil energy in social production has become the main direction of the current energy revolution. However, compar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/48H01M4/58H01M4/36H01M10/36H01M10/38
CPCY02P70/50
Inventor 包淑娟谌昊匡海珠
Owner SOUTHWEST UNIVERSITY
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