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Manufacturing method of high-energy-density quasi-solid-state sodium ion battery

A sodium ion battery, high energy density technology, applied in the direction of secondary battery, solid electrolyte, final product manufacturing, etc., can solve the problem of no industrialization solution, etc., achieve high safety, good thermal stability, non-combustible Effect

Active Publication Date: 2021-01-29
东莞奥创能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, porous aluminum requires prefabricated sodium before use, and so far no industrializable solution has been proposed.

Method used

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  • Manufacturing method of high-energy-density quasi-solid-state sodium ion battery
  • Manufacturing method of high-energy-density quasi-solid-state sodium ion battery
  • Manufacturing method of high-energy-density quasi-solid-state sodium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0047] (1) Preparation of isotropic sodium ion polyethylene-polyphenylene sulfide (PE-PPS) composite solid electrolyte

[0048] N-methylpyrrolidone (NMP), lithium sulfide Na 2 S. Lithium hydroxide NaOH, according to the material ratio of 4:1:0.2, placed in a high-pressure reactor with stirring function, and heated to 220 °C for 4 hours to obtain a dehydration system; secondly, cool the dehydration system To 90°C, add 1,4-dichlorobenzene (p-DCB), p-DCB is the same as Na 2 The molar ratio of S to substance is 1:1. React at 230°C for 120 minutes to obtain a mixed slurry. Again, drop the same amount of HCl as NaOH in the mixed slurry to just neutralize NaOH, and remove NMP and H in the mixed slurry by evaporation or sublimation. 2 O, to obtain dry mixed powder A. The mixed powder A was sheared and pulverized with a frozen alloy blade at -40°C to obtain a mixed powder B with D50=5 μm. In the pulverized mixed powder B, calixarone (the added calixarone The amount of the substanc...

Embodiment approach 2

[0061] (1) Preparation of isotropic sodium ion polyethylene-polyphenylene sulfide (PE-PPS) composite solid electrolyte

[0062] N-methylpyrrolidone (NMP), lithium sulfide Na 2 S. Lithium hydroxide NaOH, according to the material ratio of 5:2:0.3, put it in a high-pressure reactor with stirring function, and heat it up to 210 °C for 5 hours to dehydrate at a high temperature to obtain a dehydration system; secondly, cool the dehydration system To 80 ℃, add p-DCB, p-DCB with Na 2 The molar ratio of S to substance is 1:1. React at 230°C for 120 minutes to obtain a mixed slurry. Again, drop the same amount of HCl as NaOH in the mixed slurry to just neutralize NaOH, and remove NMP and H in the mixed slurry by evaporation or sublimation. 2 O, to obtain dry mixed powder A. Put the mixed powder A at -40°C by using a frozen impact jet mill plus a classification system and a vibrating sieve machine to prepare a mixed powder B with D50=10 μm, and add caliximidazole to the pulverized ...

Embodiment approach 3

[0073] (1) Preparation of isotropic sodium ion polyethylene-polyphenylene sulfide (PE-PPS) composite solid electrolyte

[0074] N-methylpyrrolidone (NMP), lithium sulfide Na 2 S. Lithium hydroxide NaOH, according to the material ratio of 4.5:1.5:0.3, placed in a high-pressure reactor with a stirring function, and heated to 210 ° C for 5 hours to obtain a dehydration system; secondly, cool the dehydration system To 80°C, add 1,4-dichlorobenzene (p-DCB), p-DCB is the same as Na 2 The molar ratio of S to substance is 1:1. The reaction was carried out at 240° C. for 150 minutes to obtain a mixed slurry. Again, drop the same amount of HCl as NaOH in the mixed slurry to just neutralize NaOH, and remove NMP and H in the mixed slurry by evaporation or sublimation. 2 O, to obtain dry mixed powder A. Put the mixed powder A at -40°C by using a frozen impact jet mill plus a classification system and a vibrating sieve machine to prepare a mixed powder B with D50=15 μm, and add 2-aminot...

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Abstract

The invention relates to the field of new energy and discloses a manufacturing method of a high-energy-density quasi-solid-state sodium ion battery, and the method comprises two main technological processes of pre-preparing sodium and removing secondary packaging of a positive electrode for pre-preparing sodium. According to the pre-preparing sodium process, under the action of an electric field,a positive electrode for sodium prefabrication is subjected to single-layer coating, and uniform sodium plating is formed on the surface of a porous aluminum foil by compounding a sodium ion polyethylene and polyphenylene sulfide-based composite solid electrolyte, so that nucleation and growth of metal sodium are uniform, and dendritic crystal generation is inhibited. The sodium-ion polyethylene polyphenylene sulfide-based composite solid electrolyte can be tightly adhered to a sodium storage aluminum-copper negative electrode after sodium is prefabricated, and can be easily separated from a single-layer coated positive electrode for pre-sodium, the positive electrode for pre-sodium after sodium removal is taken out, the internal damage of a battery cell cannot be caused, and secondary vacuumizing and sealing are performed. The battery manufactured by the method has good flame retardant property and good thermal stability, the electrolyte injection amount is reduced, combustibles in the battery are also reduced, and the safety performance of the battery is improved.

Description

technical field [0001] The invention relates to the technical field of new energy materials and device manufacturing, in particular to a method for manufacturing a quasi-solid-state sodium-ion battery with high energy density. Background technique [0002] Since sodium-ion batteries use more abundant sodium to replace lithium, the expected cost will be greatly reduced, and more and more people are paying attention to them. However, up to now, there is no commercial separator suitable for sodium-ion batteries. After being developed, most researchers still use traditional glass fiber separators to assemble sodium-ion batteries to avoid short circuits caused by sodium dendrites. However, the high cost of glass fiber separators and the thickness of hundreds of microns directly limit the commercial application of sodium-ion batteries. [0003] In addition, the negative electrode materials of sodium-ion batteries generally have a high potential for sodium, which directly leads to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/054H01M10/0585H01M10/0565
CPCH01M10/054H01M10/0565H01M10/0585H01M2300/0082H01M2300/0085H01M2300/0094Y02E60/10Y02P70/50
Inventor 周海涛伍建春高宏权俞崇晨刘孟豪周海云凌峰侯栋
Owner 东莞奥创能源科技有限公司
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