Organogel polymer electrolytic solution, preparation method, application, sodium-based dual-ion battery and preparation method thereof

An organic electrolyte and organic gel technology, which is applied in secondary batteries, circuits, electrical components, etc., can solve the problems of liquid organic electrolyte leakage, limited application occasions, affecting battery performance, etc., to improve electrochemical performance, The effect of a wide range of applications, improved service life and safety of use

Active Publication Date: 2019-04-16
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Most of the existing sodium-based dual-ion batteries use liquid organic electrolytes with glass fiber as the separator. However, liquid organic electrolytes are prone to leaks and explosions at high temperatures, causing safety accidents, and cannot be used in some applications that are critical to safety performance. For occasions with high requirements, there are problems such as poor safety, limited application occasions, and impact on battery performance

Method used

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  • Organogel polymer electrolytic solution, preparation method, application, sodium-based dual-ion battery and preparation method thereof
  • Organogel polymer electrolytic solution, preparation method, application, sodium-based dual-ion battery and preparation method thereof
  • Organogel polymer electrolytic solution, preparation method, application, sodium-based dual-ion battery and preparation method thereof

Examples

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preparation example Construction

[0083] In a second aspect, in at least one embodiment, a method for preparing an organogel polymer electrolyte is provided, comprising the following steps:

[0084] Mix organic polymers, inorganic additives and solvents and heat to obtain a solid polymer matrix; mix sodium salts with organic solvents to obtain organic electrolytes;

[0085] Putting the solid polymer matrix into the organic electrolyte to obtain the organogel polymer electrolyte.

[0086] The above preparation method is simple to operate, easy to realize, and low in cost, and the prepared organogel polymer electrolyte has excellent performance.

[0087] Preferably, the solvent includes at least one of water, alcohols, ketones, acids, sulfones, benzene, halides, ammonia or liquid oxides, preferably the solvent includes ethanol, acetone, dimethyl Sulfoxide, acetonitrile, chloroform, N-methylpyrrolidone, ethylenediamine, water, methanol, formic acid, sulfuric acid, benzene, carbon disulfide, carbon tetrachloride,...

Embodiment 1

[0153] A sodium-based double-ion battery includes a positive electrode, a negative electrode, and an organic gel polymer electrolyte between the positive electrode and the negative electrode.

[0154] The preparation method of sodium-based double ion battery comprises:

[0155] Preparation of the negative electrode of the battery: cutting the tin sheet into discs with a diameter of 12 mm, cleaning the discs with ethanol, and putting them into a vacuum drying oven for vacuum drying.

[0156]Prepare battery positive electrode: Add 0.8g carbon material, 0.1g conductive carbon black, and 0.1g polytetrafluoroethylene into 2ml nitrogen methyl pyrrolidone solution, grind thoroughly to obtain a uniform slurry; then evenly coat the slurry on carbon-coated aluminum foil surface (ie, positive current collector) and vacuum-dried. The electrode sheet obtained by drying was cut into a disc with a diameter of 10 mm, and was used as a positive electrode after compaction.

[0157] Preparatio...

Embodiment 2－11

[0160] Example 2-11 is the same as the preparation process of the sodium-based double-ion battery of Example 1, except that the carbon material in the positive electrode active material used when preparing the positive electrode is different, and all other steps and materials used are the same. The energy storage performance of the sodium-based double-ion battery is tested, and compared with the performance of Example 1 of the present invention, the positive electrode material used in Example 1 and Example 2-11 and its energy storage performance based on the battery. For details, see Table 1.

[0161] Table 1: Performance parameter table of the sodium-based double-ion battery of Examples 1-11

[0162] Example number

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Abstract

The invention belongs to the technical field of energy storage devices and relates to an organogel polymer electrolytic solution, a preparation method, application, a sodium-based dual-ion battery anda preparation method thereof. The organogel polymer electrolytic solution of the present invention comprises a solid polymer substrate and an organic electrolytic solution; wherein the solid polymersubstrate comprises an organic polymer and an inorganic additive; and the organic electrolytic solution comprises sodium salt and an organic solvent. The liquid electrolytic solution and the diaphragmin a traditional battery are replaced by the rigid-flexible organogel polymer electrolytic solution where the organic and inorganic materials coexist, thereby improving the safety of the battery under the premise of ensuring the electrochemical performance of the battery, broadening the application field of dual-ion batteries, bringing new design opportunities for energy storage devices in the field of wearable electronic devices in the future, achieving low-cost batteries without using the diaphragm and a protection circuit.

Description

technical field [0001] The invention belongs to the technical field of energy storage devices, and specifically relates to an organic gel polymer electrolyte, a preparation method, an application, a sodium-based double-ion battery and a preparation method thereof. Background technique [0002] At present, most of the batteries at home and abroad use liquid electrolytes. Liquid organic electrolytes are prone to leaks and explosions at high temperatures, causing safety accidents. They cannot be used in some occasions that require high safety performance. Solid-state and quasi-solid-state batteries using solid electrolytes or gel polymers have attracted widespread attention because of their low flammability and high safety compared to liquid electrolytes. However, all-solid-state batteries have low ionic conductivity, so they are still in the initial research and development stage, so quasi-solid-state batteries with higher ionic conductivity are favored. [0003] The dual-ion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/054H01M10/0565
CPCH01M10/054H01M10/0565Y02P70/50
Inventor 唐永炳吴越张苗
Owner SHENZHEN INST OF ADVANCED TECH
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