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Preparation method of polyvinyl chloride-based polymer electrolyte membrane

A polyvinyl chloride, electrolyte membrane technology, applied in solid electrolytes, non-aqueous electrolytes, circuits, etc., can solve the problems of high voltage, high specific energy, low self-discharge rate, etc., to achieve enhanced wear resistance and impact resistance, The effect of low raw material cost and wide application range

Active Publication Date: 2018-11-23
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0002] Lithium-ion batteries have the advantages of high voltage, high specific energy, long charge and discharge life, no memory effect, no pollution, fast charging, and low self-discharge rate, but the use of liquid electrolytes also brings safety issues

Method used

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  • Preparation method of polyvinyl chloride-based polymer electrolyte membrane
  • Preparation method of polyvinyl chloride-based polymer electrolyte membrane
  • Preparation method of polyvinyl chloride-based polymer electrolyte membrane

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specific Embodiment approach 1

[0016] Embodiment 1: A method for preparing a polyvinyl chloride-based polymer electrolyte membrane according to this embodiment is prepared according to the following steps:

[0017] 1. Weigh polyvinyl chloride and polyvinyl alcohol into a reaction vessel, add 4-6ml of solvent, stir well to dissolve the polymer completely, then add plasticizer dibutyl phthalate, and keep stirring for about 1 hour;

[0018] 2. Weigh polyvinylidene fluoride, add polyvinylidene fluoride and 4-6ml solvent into another reaction vessel, stir to dissolve polyvinylidene fluoride completely, and mix with polyvinyl alcohol, polyvinyl chloride and phthalic acid Dibutyl ester was blended, stirred evenly, lithium salt was added, stirred for 5 hours, the mixture was cast on a glass plate, placed in a vacuum drying oven, and dried at 120° C. for 1 hour to obtain a polymer electrolyte membrane.

[0019] Specific implementation measures two: the difference between this embodiment and specific embodiment one i...

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Abstract

The invention discloses a preparation method of a polyvinyl chloride-based polymer electrolyte membrane, and relates to a method for preparing an electrolyte membrane of a lithium ion battery. According to the invention, the problems of low electrical conductivity, high cost and the like of a solid polymer electrolyte are solved. The preparation method comprises the following steps of weighing polyvinyl chloride, polyvinyl alcohol, dibutyl phthalate and a solvent to be co-mixed and stirred in a reaction container; meanwhile, weighing polyvinylidene fluoride and a solvent, and performing co-mixing and stirring in another reaction container; and after the materials in the two reaction containers are uniformly stirred and then are mixed, casting the mixture on a glass plate, and drying the glass plate in a vacuum drying oven to form a film. The prepared polyvinyl chloride-based polymer electrolyte membrane is high in electrochemical performance, the experiment operation is simple, the rawmaterial cost is low, and the application range is wide.

Description

technical field [0001] The invention relates to a technology in the field of lithium-ion battery polymer electrolytes, in particular to a preparation method of a polyvinyl chloride-based polymer electrolyte membrane. Background technique [0002] Lithium-ion batteries have the advantages of high voltage, high specific energy, long charge and discharge life, no memory effect, no pollution, fast charging, and low self-discharge rate, but the use of liquid electrolytes also brings safety issues. As a new type of functional electrolyte material, solid polymer electrolyte has the characteristics of good mechanical properties, no leakage, and easy processing and molding. The development of polymer electrolyte lithium-ion batteries is an inevitable trend. [0003] Polymer electrolyte lithium-ion batteries have attracted more and more attention due to their good performance. At present, the most important polymer materials are polyethylene oxide, polyvinylidene fluoride, polymethyl ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0525H01M10/0565H01M2300/0082Y02E60/10
Inventor 李丽波杜金田赵芯谢明
Owner HARBIN UNIV OF SCI & TECH
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