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A 3, 4, 9, 10-perylenetetracarboxylic diimide flexible organic electrode prepared based on a phase transition method

A technology of perylenetetracarboximide and organic electrodes, which is applied in active material electrodes, positive electrodes, battery electrodes, etc., can solve problems such as environmental pollution, improve mechanical strength and flexibility, improve discharge specific capacity and cycle stability sexual effect

Inactive Publication Date: 2018-12-14
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to adopt a phase inversion method with simple operation steps and low manufacturing cost to prepare flexible organic electrodes for use in lithium-ion batteries, so as to improve the capacity and cycle stability of the batteries. While avoiding environmental pollution problems caused by inorganic materials

Method used

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  • A 3, 4, 9, 10-perylenetetracarboxylic diimide flexible organic electrode prepared based on a phase transition method
  • A 3, 4, 9, 10-perylenetetracarboxylic diimide flexible organic electrode prepared based on a phase transition method
  • A 3, 4, 9, 10-perylenetetracarboxylic diimide flexible organic electrode prepared based on a phase transition method

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Experimental program
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Effect test

Embodiment 1

[0032] Step 1. Weigh 4.98g polyurethane (TPU) and add it to 30mL N,N-dimethylformamide (DMF), raise the temperature to 70°C, keep stirring for 2 hours, wait until the TPU is completely dissolved in the DMF solution, and cool down naturally to room temperature. Then 0.996g of 3,4,9,10-perylenetetracarboximide (PDI) and 3.984g of carbon black (CB) were added to the above solution and stirred at room temperature for 4 hours to obtain a mixed solution. The mass ratio of solution components is PDI:CB:TPU=1:4:5(wt:wt:wt).

[0033] Step 2. Apply the mixed solution obtained in step 1 evenly on the polytetrafluoroethylene template, and then immerse the polytetrafluoroethylene plate in deionized water for 4 hours to obtain a flexible organic electrode precursor.

[0034] Step 3. Transfer the flexible organic electrode precursor obtained in step 2 to a vacuum oven, and dry it in a vacuum oven at 100°C for 2 hours to obtain a flexible organic electrode that can be directly assembled into...

Embodiment 2

[0040] Step 1. Weigh 4.98g polyurethane (TPU) and add it to 30mL N,N-dimethylformamide (DMF), raise the temperature to 70°C, keep stirring for 2 hours, wait until the TPU is completely dissolved in the DMF solution, and cool down naturally to room temperature. Then 1.992g of the 3,4,9,10-perylenetetracarboximide (PDI) and 2.988g of carbon black (CB) were added to the above solution and stirred at room temperature for 4 hours to obtain a mixed solution. The mass ratio of solution components is PDI:CB:TPU=2:3:5(wt:wt:wt).

[0041] Step 2. Apply the mixed solution obtained in step 1 evenly on the polytetrafluoroethylene template, and then immerse the polytetrafluoroethylene plate in deionized water for 4 hours to obtain a flexible organic electrode precursor.

[0042] Step 3. Transfer the flexible organic electrode precursor obtained in step 2 to a vacuum oven, and dry it in a vacuum oven at 100°C for 2 hours to obtain a flexible organic electrode that can be directly assembled ...

Embodiment 3

[0047] Step 1. Weigh 4.98g polyurethane (TPU) and add it to 30mL N,N-dimethylformamide (DMF), raise the temperature to 70°C, keep stirring for 2 hours, wait until the TPU is completely dissolved in the DMF solution, and cool down naturally to room temperature. Then 2.988g of 3,4,9,10-perylenetetracarboximide (PDI) and 1.992g of carbon black (CB) were added to the above solution and stirred at room temperature for 4 hours to obtain a mixed solution. The mass ratio of solution components is PDI:CB:TPU=3:2:5(wt:wt:wt).

[0048] Step 2. Apply the mixed solution obtained in step 1 evenly on the polytetrafluoroethylene template, and then immerse the polytetrafluoroethylene plate in deionized water for 4 hours to obtain a flexible organic electrode precursor.

[0049] Step 3. Transfer the flexible organic electrode precursor obtained in step 2 to a vacuum oven, and dry it in a vacuum oven at 100°C for 2 hours to obtain a flexible organic electrode that can be directly assembled into...

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Abstract

The invention discloses a 3, 4, 9, 10-perylenetetracarboxylic diimide flexible organic electrode prepared based on a phase transition method, and relates to the field of composite materials of flexible lithium ion batteries. The flexible organic electrode uses 3, 4, 9, 10-perylenetetracarboxylic diimide as an organic active material, polyurethane as a framework substrate, and carbon black as a conductive agent, and is a flexible self-supporting electrode formed by compounding through a phase transition preparation method. The 3, 4, 9, 10-perylenetetracarboxylic diimide flexible organic electrode of the invention improves the capacity and cycle stability of a battery, and avoids the environmental pollution problem caused by inorganic material.

Description

technical field [0001] The invention relates to the field of composite materials used in flexible lithium ion batteries, in particular to a 3,4,9,10-perylenetetracarboximide flexible organic electrode prepared based on a phase inversion method. Background technique [0002] Lithium-ion batteries have the characteristics of high energy density, high power density, long cycle life and high work safety, and have been widely used in various electronic devices. At present, the rapid development of flexible wearable electronic devices and implanted sensors has put forward a new requirement for energy storage devices - flexibility. Therefore, the study of new flexible lithium-ion batteries has become a hot and difficult point at present, and flexible batteries must provide high energy, high power density, flexibility and good mechanical properties. A lot of research has focused on flexible electrodes, current collectors and solid electrolytes, and the difficulty and focus of resea...

Claims

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Application Information

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IPC IPC(8): H01M4/137H01M4/1399H01M10/0525
CPCH01M4/137H01M4/1399H01M10/0525H01M2004/021H01M2004/028Y02E60/10
Inventor 吴东清马列鲁登杨鹏黄涛井凡张广凤
Owner SHANGHAI JIAO TONG UNIV
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