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Polyacrylate solid polymer electrolyte and preparation method thereof and application thereof in solid lithium battery

A polyacrylate, solid polymer technology, applied in the field of solid polymer electrolytes, can solve the problems of poor independent film-forming performance, difficulty in large-scale preparation of solid electrolytes, and inability to guarantee safety performance, and achieves improved mechanical strength, shortened The effect of simple film production time and production method

Active Publication Date: 2018-06-19
QINGTAO KUNSHAN ENERGY DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new type of elec trode used for batteries improves its performance compared to previous designs due to it being made entirely from pure chemical components instead of harmful ones like dimethylformamide or other organics that were previously commonly found on batteries. Additionally, this design allows for easy manufacturing without any complicated steps while maintaining good electrical properties. Overall, these improvements make batteries more reliable over longer periods than before they had been invented.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the security properties of laminated or gelled lithium secondary cells that use these types of elec trodes due to their vulnerability towards leaks during storage. Current methods involve adding nonvolatilizable solvents like dim ethyl sulfoxide (DES), chloroaluminate esters, nitrogen oxides, etc., which could potentially harm healthcare workers who handle these chemicals safely.

Method used

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  • Polyacrylate solid polymer electrolyte and preparation method thereof and application thereof in solid lithium battery
  • Polyacrylate solid polymer electrolyte and preparation method thereof and application thereof in solid lithium battery
  • Polyacrylate solid polymer electrolyte and preparation method thereof and application thereof in solid lithium battery

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Embodiment 1

[0026] The present invention is a polyacrylate solid polymer electrolyte, the solid polymer electrolyte includes acrylate, lithium salt, and initiator, and the acrylate accounts for 60% of the solid polymer electrolyte. The proportion of lithium salt in this solid polymer electrolyte is 40%.

[0027] The acrylate is butyl methacrylate.

[0028] The lithium salt comprises lithium perchlorate.

[0029] The initiator is azobisisobutyronitrile, and the initiator accounts for 0.3% of the total mass of the acrylate and the crosslinking agent.

[0030] A method for preparing a polyacrylate solid polymer electrolyte, step 1: mix butyl methacrylate and lithium perchlorate into a 20ml reagent bottle, stir at room temperature for 30min, so that butyl methacrylate and perchlorate Lithium acid mixed evenly;

[0031] Step 2: Add azobisisobutyronitrile to the above mixture, stir at room temperature for 5 minutes, and mix well;

[0032] Step 3: Evenly pour the mixed solution obtained abov...

Embodiment 2

[0036] In order to obtain an all-solid polymer electrolyte with high mechanical strength, the solid polymer electrolyte includes acrylate, lithium salt, initiator and crosslinking agent, and the acrylate accounts for 40% of the solid polymer electrolyte, so The proportion of the lithium salt in the solid polymer electrolyte is 40%, and the proportion of the crosslinking agent in the solid polymer electrolyte is 20%.

[0037] The acrylate is methyl methacrylate.

[0038] The lithium salt comprises lithium triflate.

[0039] The initiator is azobisisoheptanonitrile, and the initiator accounts for 0.5% of the total mass of the acrylate and the crosslinking agent.

[0040] Described cross-linking agent is polyethylene glycol diacrylate, methacryloxypropyl trimethoxysilane, styrene, tetraethylene glycol dimethacrylate, glycidyl methacrylate One or more, preferably polyethylene glycol diacrylate.

[0041] A method for preparing a polyacrylate solid polymer electrolyte, step 1: mi...

Embodiment 3

[0048] In order to further improve the mechanical strength of the all-solid polymer electrolyte, this solid polymer electrolyte includes acrylate, lithium salt, initiator, crosslinking agent and porous rigid support material, and the proportion of the acrylate in this solid polymer electrolyte is The ratio is 40%, the proportion of the lithium salt in the solid polymer electrolyte is 40%, and the proportion of the crosslinking agent in the solid polymer electrolyte is 20%.

[0049] The acrylate is ethyl methacrylate.

[0050] The lithium salt comprises lithium bis(trifluoromethanesulfonate)imide.

[0051]The initiator is dibenzoyl peroxide, and the initiator accounts for 0.7% of the total mass of the acrylate and the crosslinking agent.

[0052] Described cross-linking agent is polyethylene glycol diacrylate, methacryloxypropyl trimethoxysilane, styrene, tetraethylene glycol dimethacrylate, glycidyl methacrylate One or more, preferably styrene.

[0053] The porous rigid sup...

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Abstract

The invention discloses a polyacrylate solid polymer electrolyte and a preparation method thereof. The polyacrylate solid polymer electrolyte is characterized by comprising an acrylate, a lithium saltand an initiator. The preparation method is characterized by comprising the following steps: mixing the acrylate and the lithium salt into a 20 ml reagent bottle, stirring at room temperature for 30min to uniformly mix the acrylate and the lithium salt; adding the initiator to the mixed liquid of the acrylate and the lithium salt, stirring at room temperature for 5 min to uniformly mix the mixedliquid and the initiator; uniformly pouring the obtained mixture onto a culture dish or a porous rigid support material; heating at 80DEG C for 20 min to initiate self-polymerizing or copolymerizingof the polyacrylate with a crosslinking agent by the initiator to obtain the polyacrylate solid polymer electrolyte. The method has the advantages that the preparation method is simple, film making time is shortened, and time cost is saved.

Description

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Claims

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Application Information

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Owner QINGTAO KUNSHAN ENERGY DEV CO LTD
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