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Soft type polymeric compound lithium battery and preparation method thereof

A polymer and lithium battery technology, applied in the manufacture of electrolyte batteries, secondary batteries, non-aqueous electrolyte batteries, etc., can solve the problems of no relevant patents and achieve light weight, high energy density, and high mechanical properties

Inactive Publication Date: 2012-10-17
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Searching patents found that there is no related patent that uses the same type of aluminum-coated carbon fiber cloth and copper-coated carbon fiber cloth as lithium battery current collectors.

Method used

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  • Soft type polymeric compound lithium battery and preparation method thereof
  • Soft type polymeric compound lithium battery and preparation method thereof
  • Soft type polymeric compound lithium battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of positive electrode sheet

[0027] will be 90 wt .% LiMn 2 o 4 、6 wt .% PVDF and 4 wt .% Dissolve acetylene black in N-methylpyrrolidone, stir well until a viscous slurry is formed; then apply the slurry to the carbon fiber cloth 1 with a thickness of 0.3mm and the aluminum coating layer 2 with a thickness of 0.2μm 3 current collectors consisting of aluminized carbon fiber cloth, 120 o After C vacuum drying, the positive electrode sheet is obtained;

[0028] Preparation of negative electrode sheet

[0029] will be 90 wt .% Artificial graphite, 5 wt .% PVDF and 5 wt .% Dissolve acetylene black in N-methylpyrrolidone, stir well until a viscous slurry is formed; then apply the slurry to a fiber cloth with a thickness of 0.3mm and a copper plating layer with a thickness of 0.12μm Copper plated carbon fiber cloth current collector, 100 o After C vacuum drying, the negative electrode sheet is obtained.

[0030] Preparation of composite po...

Embodiment 2

[0035] Preparation of positive electrode sheet

[0036] will be 85 wt .% Li(Ni0.333 mn 0.333 co 0.333 )O 2 、7 wt .% Hydroxypropyl Methyl Cellulose and 8 wt .% Dissolve nano-carbon fibers in N-methylpyrrolidone, stir well until a viscous slurry is formed; then apply the slurry to a carbon fiber cloth with a thickness of 1mm and an aluminum-coated layer with a thickness of 1.2μm. Aluminum carbon fiber cloth current collector, 100 o After C vacuum drying, the positive electrode sheet is obtained;

[0037] Preparation of negative electrode sheet

[0038] Will 93 wt .% Li 4 Ti 5 o 12 、5 wt .% hydroxypropyl methylcellulose and 2 wt .% Dissolve nano-carbon fibers in N-methylpyrrolidone, stir well until a viscous slurry is formed; then apply the slurry to a fiber cloth with a thickness of 1mm and a copper-plated layer with a thickness of 1.2μm. Copper Carbon Fiber Cloth Current Collector, 80 o After C vacuum drying, the negative electrode sheet is obtained.

...

Embodiment 3

[0044] Preparation of positive electrode sheet

[0045] Will 95 wt .% LiCoO 2 、3 wt .% hydroxybutadiene and 2 wt .% Dissolve carbon nanotubes in N-methylpyrrolidone, stir well until a viscous slurry is formed; then apply the slurry to a carbon fiber cloth with a thickness of 2mm and an aluminum layer with a thickness of 2.5μm Aluminized carbon fiber cloth collector, 80 o After C vacuum drying, the positive electrode sheet is obtained;

[0046] Preparation of negative electrode sheet

[0047] will be 87 wt .% Silicon carbon composite material, 8 wt .% hydroxybutadiene and 5 wt .% Dissolve carbon nanotubes in N-methylpyrrolidone, stir well until a viscous slurry is formed; then apply the slurry to a fiber cloth with a thickness of 2mm and a copper-plated layer with a thickness of 1.5μm Copper plated carbon fiber cloth collector, 120 o After C vacuum drying, the negative electrode sheet is obtained.

[0048] Preparation of composite polymer membranes

[00...

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Abstract

The invention relates to a soft type polymeric compound lithium battery and a preparation method thereof. The soft type polymeric compound lithium battery is characterized by comprising a positive electrode piece which takes aluminize carbon cloth as a current collector, a negative electrode piece which takes coppered carbon fibre cloth as a current collector, and a partition plate which is a compound polymer dielectric film and arranged between the positive electrode piece and the negative electrode piece, wherein an aluminium model film is used for external packing. The soft type polymeric compound lithium battery provided by the invention has the advantages of strong shock resistance property, high safety feature, high mechanical property and good flexility.

Description

technical field [0001] The invention relates to a soft polymer lithium battery and a preparation method thereof, in particular to a soft polymer lithium battery in which aluminum-plated carbon fiber cloth and copper-plated carbon fiber cloth are respectively used as a positive electrode current collector and a negative electrode current collector, and its preparation method. Background technique [0002] As an excellent energy storage and conversion device, lithium battery has been widely used in various fields of people's production and life. Lithium batteries can be divided into liquid lithium-ion batteries and polymer lithium-ion batteries according to their structure. Liquid lithium-ion batteries are prone to dangers such as leakage due to the use of liquid electrolytes. Moreover, most liquid lithium batteries are packaged in aluminum or steel shells, which makes the shape of the battery very fixed and the energy density is severely limited. The polymer lithium batte...

Claims

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Application Information

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IPC IPC(8): H01M4/66H01M10/0525H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 姜涛张克金王丹王金兴安宇鹏荣常如魏晓川林革
Owner CHINA FIRST AUTOMOBILE
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