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Zinc-based dual-ion battery and preparation method thereof

A zinc-based double ion and double ion technology, which is applied in the manufacture of electrolyte batteries, secondary batteries, battery electrodes, etc., can solve problems such as corrosion cycle performance, and achieve the effects of excellent electrochemical performance, avoidance of dendrites, and low cost.

Active Publication Date: 2018-06-15
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first purpose of the present invention is to provide a zinc-based dual-ion battery to alleviate the problems of corrosion and poor cycle performance of the existing zinc-based dual-ion battery using aqueous electrolyte

Method used

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  • Zinc-based dual-ion battery and preparation method thereof
  • Zinc-based dual-ion battery and preparation method thereof
  • Zinc-based dual-ion battery and preparation method thereof

Examples

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preparation example Construction

[0106] As a preferred embodiment, the preparation method of zinc-based double-ion battery comprises the following steps:

[0107] a) Prepare the negative electrode: mix the active material of the negative electrode material, the conductive agent, the binder and the solvent to form a slurry; then coat the negative electrode material slurry on the surface of the negative electrode current collector, and cut it into pieces after drying to obtain the negative electrode of the required size ;

[0108] b) Preparation of electrolyte solution: dissolving zinc salt electrolyte in organic solvent and / or ionic liquid, fully stirring to obtain electrolyte solution;

[0109] c) Prepare the diaphragm: cut the diaphragm into the required size for later use;

[0110] d) Preparation of the positive electrode: mix the active material of the positive electrode material, the conductive agent, the binder and the solvent to form a slurry; then coat the positive electrode material slurry on the sur...

Embodiment 1

[0118] Such as figure 1 As shown, this embodiment is a zinc-based double-ion battery, including a negative electrode, a separator 4, an electrolyte 3 and a positive electrode. The negative electrode includes a negative electrode current collector 1 and a negative electrode material 2 , and the positive electrode includes a positive electrode current collector 5 and a positive electrode material 6 .

[0119] Wherein, the specific material composition and preparation method of the zinc-based double-ion battery are as follows:

[0120] Step a) Preparation of negative electrode: Add 0.8g of activated carbon, 0.1g of conductive carbon black, and 0.1g of polyvinylidene fluoride into 2mL of nitrogen methyl pyrrolidone solution, grind thoroughly to obtain a uniform slurry; then evenly coat the slurry on The surface of the carbon-coated aluminum foil is vacuum-dried, and the electrode sheet obtained by drying is cut into a disc with a diameter of 12mm, which is used as a negative elec...

Embodiment 2

[0126] This embodiment is a zinc-based double-ion battery, wherein natural graphite is used as the positive electrode active material, and the others are the same as in Embodiment 1.

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Abstract

The invention provides a zinc-based dual-ion battery and a preparation method thereof, which relate to the field of a battery. The zinc-based dual-ion battery comprises an anode, a cathode, a diaphragm between the anode and the cathode, and an electrolyte, the cathode comprises a cathode active material used for absorbing and desorbing zinc ions, and the cathode active material is a porous carbonmaterial. The electrolyte comprises zinc salt and a non-aqueous solvent. The zinc-based dual-ion battery is used for alleviating the technical problems of easy corrosion due to a water-series electrolyte and poor circularity of the zinc-based dual-ion battery. The electrochemistry performance of the zinc-based dual-ion battery is excellent, the zinc-based dual-ion battery has high capacity and stable cycle performance, and has good safety performance.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a zinc-based double-ion battery and a preparation method thereof. Background technique [0002] A secondary battery, also known as a rechargeable battery, is a battery that can be repeatedly charged and discharged and used many times. Compared with non-reusable primary batteries, secondary batteries have the advantages of low cost and less environmental pollution. At present, the main secondary battery technologies include lead-acid batteries, nickel-chromium batteries, nickel-metal hydride batteries, and lithium-ion batteries. Among them, lithium-ion batteries are the most widely used. With the gradual application of lithium-ion batteries in smart phones, electric vehicles and other fields, the demand for lithium is growing rapidly year by year, and its global reserves are very limited and unevenly distributed, resulting in rapid rise in raw material prices. , seriously rest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/583H01M10/0569H01M10/054H01M10/058H01M10/42
CPCH01M4/583H01M10/054H01M10/0569H01M10/058H01M10/4235Y02E60/10Y02P70/50
Inventor 唐永炳丁璇季必发张帆
Owner SHENZHEN INST OF ADVANCED TECH