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Zinc-based dual-ion battery and preparation method thereof

A zinc-based dual-ion and dual-ion technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as potential safety hazards, self-corrosion, and battery electrochemical performance degradation, and achieve simplified production processes and reduced volume. and quality, the effect of excellent electrochemical performance

Active Publication Date: 2018-07-03
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a zinc-based dual-ion battery and its preparation method, aiming to solve the problems of self-corrosion and passivation of the existing water-based lithium-ion batteries, which lead to a decrease in the electrochemical performance of the battery and have potential safety hazards

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

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preparation example Construction

[0090] Another aspect of the present invention provides a method for preparing a zinc-based dual-ion battery, which includes the following steps:

[0091] Provide the positive electrode, negative electrode, zinc salt electrolyte and separator of the zinc-based double-ion battery according to the composition of the above-mentioned zinc-based double-ion battery;

[0092] The positive electrode, the separator and the negative electrode are sequentially stacked and wound to form a battery core, injected and packaged to prepare a zinc-based dual-ion battery.

[0093] The preparation method of the zinc-based dual-ion battery provided by the embodiment of the present invention only needs to perform liquid injection and assembly after winding the positive and negative electrodes and the separator, and the preparation method is simple.

[0094] Specifically, the negative electrode can be obtained by cutting the metal foil into a required size, and then performing surface cleaning and drying tre...

Embodiment 1

[0101] A zinc-based dual-ion battery includes a negative electrode, a separator, an electrolyte, and a positive electrode. The preparation method includes the following steps:

[0102] Preparing the negative electrode: take zinc foil with a thickness of 0.02 mm, cut into a disc with a diameter of 12 mm, clean the surface of the tin foil with ethanol, and dry it as a negative electrode current collector for later use.

[0103] Preparation of the diaphragm: Cut the glass fiber diaphragm into a 16mm diameter disc, and use it as a diaphragm for use after drying.

[0104] Prepare electrolyte: Weigh 3.19g zinc bis(trifluoromethanesulfonyl)imide and add it to 5mL N-butyl-Nmethylpyrrolidine bis(trifluoromethanesulfonyl)imide salt, and stir to bis(trifluoromethanesulfonyl) The imide zinc is completely dissolved, and it is used as electrolyte for standby after fully stirring it (the electrolyte concentration is 1M).

[0105] Preparing the positive electrode: add 0.8g expanded graphite, 0.1g car...

Embodiment 2

[0108] A zinc-based dual-ion battery, wherein the active material of the negative electrode material adopts metallic nickel, and the others are the same as in Embodiment 1.

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Abstract

The invention provides a zinc-based dual-ion battery which comprises a positive electrode, a negative electrode, a diaphragm arranged between the positive electrode and the negative electrode, and electrolyte, wherein the electrolyte is non-water zinc salt electrolyte; the positive electrode comprises a positive electrode current collector and a positive electrode material combined with the surface of the positive electrode current collector; the positive electrode material contains a positive electrode active material, and the positive electrode active material is a layered material enablingthe negative ions forming the zinc salt to be reversibly embedded and separated; the negative electrode is a metal foil; the metal foil serves as a negative electrode current collector as well as a negative electrode active material; and the metal foil enables reversible deposition and dissolution of zinc ions or reversible alloying reaction with zinc.

Description

Technical field [0001] The invention belongs to the technical field of new energy, and particularly relates to a zinc-based dual-ion battery and a preparation method thereof. Background technique [0002] A secondary battery is also called a rechargeable battery, which is a battery that can be charged and discharged repeatedly 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-hydrogen batteries, and lithium-ion batteries. Among them, lithium-ion batteries are the most widely used. In recent years, the large-scale application of lithium-ion batteries in the field of portable electronic devices and power vehicles has led to an explosive growth in the demand for lithium. However, the global reserves of lithium are very limited and unevenly distributed, causing the pr...

Claims

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Application Information

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IPC IPC(8): H01M10/054H01M10/0587H01M10/0566H01M4/134H01M4/48H01M4/58H01M4/583
CPCH01M4/134H01M4/483H01M4/58H01M4/5815H01M4/583H01M10/054H01M10/0566H01M10/0587Y02E60/10Y02P70/50
Inventor 唐永炳季必发张帆
Owner SHENZHEN INST OF ADVANCED TECH
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