Precursor material for lithium ion battery and method for manufacturing lithium ion battery

A technology of lithium-ion batteries and precursors, which is applied in the manufacture of electrolyte batteries, secondary batteries, and final products, and can solve the problems of high production costs of inorganic solid electrolytes

Active Publication Date: 2021-11-30
NANO & ADVANCED MATERIALS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the production cost of inorganic solid electrolytes is very high

Method used

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  • Precursor material for lithium ion battery and method for manufacturing lithium ion battery
  • Precursor material for lithium ion battery and method for manufacturing lithium ion battery
  • Precursor material for lithium ion battery and method for manufacturing lithium ion battery

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Embodiment

[0027] In order to prepare the precursor material of the solid electrolyte layer, in a mixture of ethylene carbonate (ethylenecarbonate), dimethyl carbonate (dimethyl carbonate), diethyl carbonate (diethyl carbonate) and acetonitrile as an organic solvent, a Lithium hexafluorophosphate (LiPF 6 ) and a 1 M mixture solution of lithium bis(trifluoromethanesulfonimide) (LiTFSI). A mixture of ionically conductive polymers including polyethylene oxide and polyvinylidene fluoride is then dissolved in the solution. Next, 10 wt% of ethoxylated trimethylolpropane as a crosslinkable monomer and 2-hydroxyl-2-methylpropiophenone as a photoinitiator were used at a monomer / photoinitiator weight ratio of 90 10, and 2wt% Al 2 o 3 The nano-ceramic filler is added into the viscous solution, and the defoaming mixer is continuously used for 3 minutes to obtain evenly dispersed ceramic particles. Coat the gel-like precursor onto the electrodes. The solid electrolyte was formed by shining UV li...

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Abstract

A precursor material for a lithium ion battery and a method for manufacturing the lithium ion battery. The precursor material is UV curable and printable, and can be used as a separator paper and a solid electrolyte. The precursor material comprises a lithium salt dissolved in one or more organic solvents, a UV curable monomer in an amount of about 4% to about 10% by weight, a UV photoinitiator, in an amount of less than the amount by weight of the precursor material About 5% of one or more matrix ion-conducting polymers, and ceramic powder. The precursor material, when cured, has sufficient mechanical strength to function as a separator paper that prevents electrical shorts between the lithium-ion battery cathode and the lithium-ion battery anode. It is also conductive enough to function as an electrolyte for lithium-ion batteries. The provided fabrication method can allow the formation of cells with complex shapes by printing.

Description

technical field [0001] The present invention relates to a printable precursor material used as a solid electrolyte, and more particularly, to a printable precursor material used as a solid electrolyte for a lithium-ion battery that does not require separator paper. Background technique [0002] There is an increasing demand for high-performance lithium-ion batteries. The development of new flexible and wearable electronics has spurred research into ever smaller batteries. A focus of the industry is the development of flexible batteries with high safety, especially at high temperatures. In particular, it should be pointed out that the safety of traditional liquid electrolytes has been widely concerned. At high temperatures, electrolyte leakage may cause fire or explosion. Therefore, studies have been conducted on solid electrolytes as a substitute for liquid electrolytes. In the past, polymer electrolytes were mainly solid polymer membranes. These polymer membranes requir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0525H01M10/0565H01M10/058
CPCH01M10/058H01M10/0525H01M10/0565H01M2300/0085H01M2300/0071H01M10/056H01M10/0562H01M10/0568Y02E60/10H01M50/446Y02P70/50
Inventor 莎拉·阿布阿里郑富林傅丽
Owner NANO & ADVANCED MATERIALS INST
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