Polymer lithium ion cell and its preparing method

A lithium-ion battery and polymer technology, applied in the manufacture of electrolyte batteries, secondary batteries, non-aqueous electrolyte batteries, etc., can solve the problems of difficult control of polymer reaction, high requirements for equipment and operation, and increased process complexity. Achieve the effects of easy practical production, good interface stability, and low requirements for operation and environment

Inactive Publication Date: 2003-06-25
TIANJIN UNIV
View PDF0 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the separator is used, and the degree of polymer reaction in the battery is not easy to control
However, this process also has some problems in actual production. For example, the extraction process of the pore-forming agent increases the complexity of the process, and the thermal compounding process of the battery has higher requirements on equipment and operation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polymer lithium ion cell and its preparing method
  • Polymer lithium ion cell and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

example 1：PMAML preparation approach 。0.15mol MMA、0.8mol AN and 0.05mol MALi150ml DMF( 2 ) or ， 1 ，0.3g 2 ，，。50℃8hPMAML。 Synthetic proportion PMAML。PMAMLMMA、AN and MALi0.4mol、0.4mol、0.2mol and 0.1mol、0.8mol、0.1mol，100ml and 150ml，0.4g and 0.27g，60℃ and 70℃，10 and 12。 example 2：，：8.5g，1.0g(Super-P)，0.5g( or SBR)。7g，，100μm。，：9.0g，(Super-P)0.3g，0.7g( or SBR)。14g，，80μm。 preparation 。 example 3：1g PMAML and 3g P(VDF-HFP)20g DMF 2 ( or NMP、、DMF 1 or )，，。 to 50μm，30min，LiPF6，EC/DMC。80％，1.4×10-3S·cm-1。 example 4： example 3 approach preparation ，PMAML and P(VDF-HFP)1g and 5g，20g DMF and 4g。， 1 (30-50℃)， 1 ，。 and ，(1M LiPF6-EC/DEC，2g/500mAh)。 example 4： example 3 approach ，(30-50℃)， 1 (50μm)。 and ，(1M LiPF6-EC/DMC，2g/500mAh)。 example 5： example 3 approach and ， 1 (50μm)。 and ，( approach and example 3)。 pic 150，0.3C。 pic 2，0.2mA·cm-2100％。 example 6

[0019] The polymer matrix material used in the present invention is poly(methyl methacrylate-acrylonitrile-lithium methacrylate), i.e. poly(MMA-AN-MALi) (abbreviated as PMAML) and polyvinylidene fluoride or polyvinylidene fluoride (Vinylidene fluoride-hexafluoropropylene) is PVDF or P(VDF-HFP). Lithium salt is LiPF 6 、LiBF 4 , LiClO 4 , LiAsF 6 、LiCF 3 SO 3 , LiN(CF 3 SO 2 ) 2 One of. The aprotic solvent is one or more of EC (ethylene carbonate), PC (propylene carbonate), DEC (diethyl carbonate), DMC (dimethyl carbonate), DME (ethyl methyl carbonate). Example 1: The preparation method of PMAML. Dissolve 0.15mol MMA, 0.8mol AN and 0.05mol MALi with 150ml DMF (dimethylformamide) or methanol to prepare a monomer mixture, put the prepared monomer mixture into a sealable glass container, add 0.3 g of azobisisobutyronitrile initiator, and remove the oxygen in the container with dry nitrogen, and seal the reaction container. Then react at 50°C for 8h to prepare PMAML. Se...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
electrical conductivityaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The polymer lithium ion cell includes anode plate, cathode plate and electrolyte. At least one of the anode plate and the cathode plate has polymer substrate material film comprising polymer A and polymer B, the polymer A is poly(methyl methacrylate-acrylonitrile-lithium methacrylate) and the polymer B is poly(vinylidene difluoride) or poly(vinylidene difluoride-hexafluoropropylene). During the preparation of the cell, the polymer substrate material is painted directly onto anode plate and/or the cathode plate to form cell diaphragm, and electrolyte liquid is filled to form polymer electrolyte. The polymer lithium ion cell has simple preparation process and no need of addition diaphragm.

Description

technical field [0001] The invention relates to a lithium ion battery and a preparation method thereof, more specifically to a polymer lithium ion battery and a preparation method thereof. Background technique [0002] Polymer lithium-ion batteries have the characteristics of high specific energy, no electrolyte leakage, good safety performance, flexible design, and easy mass production. With the continuous miniaturization of portable electronic devices, secondary batteries should also develop in the direction of light weight and ultra-thin. Lithium-ion batteries with polymer materials as electrolytes are favored by the market for their superior performance. Polymer lithium-ion batteries are a hot research topic for battery manufacturers and scientific research institutes. [0003] The core technology of polymer lithium-ion batteries lies in the preparation of polymer electrolytes. Polymer electrolytes are mainly divided into pure solid polymer ele...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 唐致远王占良
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap