POSS composite porous gel polymer electrolyte and electrostatic spinning preparation method

A gel polymer, electrospinning technology, applied in electrospinning, solid electrolyte, non-aqueous electrolyte and other directions, can solve the problems of short cruising distance and cycle life, poor rate charging and discharging performance, etc. Improves conductivity and avoids the effect of poor dispersion

Inactive Publication Date: 2016-07-13
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Lithium-ion batteries have attracted widespread attention due to their advantages such as high energy density, relative safety, and low pollution, and have been used in mobile phones, notebook computers, electric vehicles and other ...

Method used

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  • POSS composite porous gel polymer electrolyte and electrostatic spinning preparation method
  • POSS composite porous gel polymer electrolyte and electrostatic spinning preparation method
  • POSS composite porous gel polymer electrolyte and electrostatic spinning preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Implementation example 1: the reaction flow diagram is as figure 1 shown.

[0024] Step 1: PVDF and POSS-(C 3 h 6 Cl) 8 Dry in a vacuum oven at 60°C for 24 hours, and distill the polymer solvent DMF under reduced pressure and add Molecular sieves stand for more than 12h;

[0025] Step 2: Weigh DMF and PVDF according to the mass ratio of 85:15, heat and stir in a water bath at 30°C to form a polymer solution, and then weigh POSS-(C 3 h 6 Cl) 8 And blend with the above polymer solution, heat and stir until it dissolves completely to obtain a spinning solution;

[0026] Step 3: Electrospinning the spinning solution in Step 2 to obtain a spun film, and drying it in a vacuum oven at 40° C. for 24 hours to obtain a POSS composite porous film. The parameters of the electrospinning are: the spinning voltage is 20KV, the injection speed of the spinning solution is 0.2mm / min, the needle of the syringe is 25cm away from the spinning receiving device, and the spinning re...

Embodiment 2

[0029] Step 1: PVDF, PAN and POSS-(C 3 h 6 Cl) 8 Dry in a vacuum oven at 60°C for 24 hours, and distill the polymer solvent DMF under reduced pressure and add Molecular sieves stand for more than 12h;

[0030] Step 2: Weigh DMF, PVDF and PAN according to the mass ratio of 85:10:5, heat and stir in a water bath at 40°C to form a polymer solution, and then weigh POSS-(C 3 h 6 Cl) 8 And blend with the above polymer solution, heat and stir until it dissolves completely to obtain a spinning solution;

[0031] Step 3: Electrospinning the spinning solution in Step 2 to obtain a spun film, and drying it in a vacuum oven at 40° C. for 24 hours to obtain a POSS composite porous film. The parameters of the electrospinning are: the spinning voltage is 20KV, the injection speed of the spinning solution is 0.2mm / min, the needle of the syringe is 25cm away from the spinning receiving device, and the spinning receiving device is a drum with a rotating speed of 15m / h;

[0032] Step...

Embodiment 3

[0034] Step 1: PVDF, PAN and POSS-(C 3 h 6 Cl) 8 Dry in a vacuum oven at 60°C for 24 hours, and distill the polymer solvent DMF under reduced pressure and add Molecular sieves stand for more than 12h;

[0035] Step 2: Weigh DMF, PVDF and PAN according to the mass ratio of 85:10:5, heat and stir in a water bath at 40°C to form a polymer solution, and then weigh POSS-(C 3 h 6 Cl) 8 And blend with the above polymer solution, heat and stir until it dissolves completely to obtain a spinning solution;

[0036] Step 3: Electrospinning the spinning solution in Step 2 to obtain a spun film, and drying it in a vacuum oven at 40° C. for 24 hours to obtain a POSS composite porous film. The parameters of the electrospinning are: the spinning voltage is 18KV, the injection speed of the spinning solution is 0.25mm / min, the needle of the syringe is 20cm away from the spinning receiving device, and the spinning receiving device is a drum with a rotating speed of 15m / h;

[0037] Step ...

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PUM

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Abstract

The invention relates to a POSS composite porous gel polymer electrode and an electrostatic spinning preparation method. The POSS composite porous gel polymer electrolyte is characterized by being prepared from the following raw material components: 1 part by weight of POSS hybrid materials, 4 to 20 parts by weight of polymer matrix and 16 to 230 parts by weight of polymer solvent. A preparation method of the gel polymer electrolyte adopts the electrostatic spinning preparation method. The POSS hybrid material is a copolymer of chloropropyl POSS (POSS-(C3H6Cl)8) and eight-armed planetary POSS polymer (POSS-(PMMA)8). The POSS composite porous electrolyte has high liquid absorption rate, and the introduced POSS hybrid material can improve the heat mechanical performance of a diaphragm and the ion transportation performance of the gel polymer electrolyte. By adopting the POSS composite porous gel polymer electrode, the requirement on the ion conductivity can be met.

Description

technical field [0001] The invention belongs to the technical field of gel polymer electrolyte preparation, and relates to a POSS composite porous gel polymer electrolyte and a method for preparing it by electrospinning. Background technique [0002] As the energy crisis and environmental pollution problems continue to intensify, it is important to vigorously develop new green energy sources, especially new low-carbon, environmentally friendly, and low-cost power new energy sources represented by hybrid or pure electric vehicles. Direction of development. Lithium-ion batteries have attracted widespread attention due to their advantages such as high energy density, relative safety, and low pollution, and have been used in mobile phones, notebook computers, electric vehicles and other fields. However, the current lithium-ion batteries still have short battery life and short cycle life. , The rate charge and discharge performance is poor, which limits its use as a high-power c...

Claims

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Application Information

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IPC IPC(8): H01M10/0565D01D5/00D01F1/10
CPCD01D5/003D01F1/10H01M10/0565H01M2300/0082Y02E60/10
Inventor 马晓燕孙坤张帆
Owner NORTHWESTERN POLYTECHNICAL UNIV
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