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A kind of negative electrode material of lithium ion battery and preparation method thereof

A lithium-ion battery and negative electrode material technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of inability to meet large-scale energy storage, low specific capacity, etc., achieve good application and promotion prospects, and low redox potential Effect

Active Publication Date: 2022-04-08
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the low specific capacity of the current aromatic imide lithium-ion batteries in the field and cannot meet the requirements of large-scale energy storage, and then provide a lithium-ion battery negative electrode material and its preparation method

Method used

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  • A kind of negative electrode material of lithium ion battery and preparation method thereof
  • A kind of negative electrode material of lithium ion battery and preparation method thereof
  • A kind of negative electrode material of lithium ion battery and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0101] Example 1 Preparation of 3,3',4,4'-benzophenone tetracarboxylic diimide polymer (PBZTI)

[0102]

[0103] PBZTI is any of the following polymers:

[0104] A:

[0105] B:

[0106] C:

[0107] D:

[0108] Among them, n=1-5.

[0109] Its concrete reaction steps are as follows:

[0110] at room temperature, N 2 Under protective conditions, 3.2385g 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA) was added into a three-necked flask along a dry funnel, and 10mL of 1-methyl-2-pyrrolidone ( NMP) was added into the three-necked flask, during the addition process, all the BTDA on the funnel and the bottle wall were washed down, and stirred for 20 min until a uniform transparent solution was formed.

[0111] at room temperature, N 2 Under protective conditions, 0.5057g N 2 h 4 Add the three-necked flask along the dry funnel. At this time, light yellow agglomeration occurs. Add 5mL NMP into the three-necked flask with a disposable dropper. During the ad...

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Abstract

The invention discloses a lithium ion battery negative electrode material and a preparation method thereof. The lithium ion battery negative electrode material disclosed by the present invention is an aromatic imide polymer represented by the general formula (I). The electrode anode material prepared by the aromatic imide polymer has an extremely low redox potential, and is expected to become an electrode material for a new type of electrochemical element, so it has good industrial application and promotion prospects.

Description

technical field [0001] The invention relates to a lithium ion battery negative electrode material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of smart grid, new energy generation (wind energy, solar energy, etc.), and power (hybrid) vehicles, the research and development of energy storage technology, especially large-scale energy storage technology, has become an urgent problem to be solved. Rechargeable lithium-ion batteries have been widely used in mobile phones, computers, and other portable electronic products due to their high energy density and power density, and are the most commonly commercialized batteries. However, the current energy density, cycle performance, and rate performance of lithium-ion batteries are far from meeting the actual requirements. Therefore, the development of lithium-ion batteries that can meet large-scale energy storage has become a global research hotspot. [0003] The most cri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/60H01M10/0525
CPCH01M4/606H01M10/0525Y02E60/10
Inventor 关士友王亚茹林书玮
Owner SHANGHAI UNIV
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