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Solid electrolyte and its lithium battery and electrochemical carrier structure

A solid electrolyte and electrochemical technology, applied in electrochemical generators, secondary batteries, circuits, etc., can solve problems such as difficulty in forming various shapes, complicated manufacturing process, and liquid leakage

Active Publication Date: 2015-09-09
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing battery components, the positive and negative electrodes and the electrolyte need to be coated in metal, so it is difficult to form various shapes
Liquid electrolyte not only complicates the manufacturing process, but also has the possibility of leakage

Method used

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  • Solid electrolyte and its lithium battery and electrochemical carrier structure
  • Solid electrolyte and its lithium battery and electrochemical carrier structure
  • Solid electrolyte and its lithium battery and electrochemical carrier structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] As shown in formula 2, take 0.2 mole parts of glycidyl methacrylate (TCI, M0590) and 0.2 mole parts of amines ( 2070, x=31, y=10) after the reaction, the product shown in formula 2 is formed.

[0034] Then, as shown in formula 3, take 1.01 molar parts of polymethylsiloxane (Aldrich, 176206), the product shown in formula 2 and 0.8 molar parts of polyvinyl alcohol methacrylate (Aldrich, 447943) after reaction , forming the product shown in formula 3 (polysiloxane grafted polyoxyalkylene methacrylate polymer), wherein m is 9, p is between 5 and 10, q is between 1 and 2, and r is 20 Between ~40, x is 31, and y is 10.

[0035] Take 1.5 g of the above-mentioned polysiloxane-grafted polyoxyalkylene methacrylate polymer product and 0.56 g of lithium salt (LiTFSI) by weight, and mix them uniformly by ultrasonic vibration to form a solid electrolyte. The above-mentioned solid electrolyte is measured by AC impedance analysis, and the relationship between its ion conductivity an...

Embodiment 2

[0037] As shown in formula 2, get 0.5 mole part of glycidyl methacrylate (TCI, M0590) and 0.5 mole part of amines ( 2070, x=31, y=10) after the reaction, the product shown in formula 2 is formed.

[0038] Then, as shown in formula 3, take 1.01 molar parts of polymethylsiloxane (Aldrich, 176206), the product shown in formula 2, and 0.5 molar parts of polyvinyl alcohol methacrylate (Aldrich, 447943) to react Finally, the product (polysiloxane grafted polyoxyalkylene methacrylate polymer) shown in formula 3 is formed, wherein m is 9, p is between 12 and 25, q is between 1 and 2, and r is 12 to 25, x is 31, and y is 10.

[0039] Take 1.5 g of the above-mentioned polysiloxane-grafted polyoxyalkylene methacrylate polymer product and 2.03 g of lithium salt (LiTFSI) by weight, and mix them uniformly by ultrasonic vibration to form a solid electrolyte. The above-mentioned solid electrolyte is measured by AC impedance analysis, and the relationship between its ion conductivity and th...

Embodiment 3

[0041] As shown in formula 2, get 0.5 mole part of glycidyl methacrylate (TCI, M0590) and 0.5 mole part of amines ( 2070, x=31, y=10) after the reaction, the product shown in formula 2 is formed.

[0042] Then, as shown in formula 3, take 1.01 molar parts of polymethylsiloxane (Aldrich, 176206), the product shown in formula 2, and 0.5 molar parts of polyvinyl alcohol methacrylate (Aldrich, 447943) to react Finally, the product (polysiloxane grafted polyoxyalkylene methacrylate polymer) shown in formula 3 is formed, wherein m is 9, p is between 12 and 25, q is between 1 and 2, and r is 12 to 25, x is 31, and y is 10.

[0043] Get 20g of graphite (purchased from Alfa Co.) and 20g of NaNO 3 After placing 400mL of 98% sulfuric acid, stirred at room temperature for 60 minutes, then added 60g of KMnO 4 Ultrasonic vibration is performed to form graphene oxide.

[0044] Get the polysiloxane grafted polyoxyalkylene methacrylate polymer product of 1.5g weight part, the lithium salt...

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Abstract

The invention provides a solid electrolyte, containing 85 to 96 parts of polysiloxane grafting polyoxane methacrylate high polymers by weight, 5 to 10 parts of lithium salt by weight, and 0.01 to 3 parts of grapheme oxide by weight. The invention also relates to a lithium battery and an electrochemical structure with the solid electrolyte.

Description

technical field [0001] The present invention relates to solid electrolytes, and more particularly, the present invention relates to solid electrolytes added with graphene oxide. Background technique [0002] Batteries are very important components for mobile phones and portable computers and electronic products. In order to reduce the size and weight of electronic products, increasing the electric capacity of the battery and reducing its volume are considered as one of the means for improvement. The average voltage of a lithium battery in which the negative electrode is formed of a graphite material is greater than or equal to 3.7V. Furthermore, lithium batteries can avoid degradation caused by charge and discharge cycles. To sum up, lithium batteries with high energy density and output density are suitable for portable electronic products. [0003] In order to be applied to different types of components, the shape design of lithium batteries needs to have high flexibilit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0565
CPCY02E60/122Y02E60/10
Inventor 郑锦淑杨长荣王复民邱国展曾峯柏邱俊毅
Owner IND TECH RES INST