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Organic boron-thiophene conjugated polymer as well as preparation method and application thereof

A technology of conjugated polymers and organoboron, which is applied in the field of organoboron-thiophene conjugated polymers and its preparation, can solve problems such as unstable capacity, achieve good electron conduction characteristics, excellent cycle stability, and reduce electron transport resistance Effect

Pending Publication Date: 2022-05-13
QINGHAI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems in the prior art, the present invention provides an organoboron-thiophene conjugated polymer and its preparation method and application, wherein the organoboron-containing polymer has the advantage of high electron mobility and has the ability to become an excellent electrode The potential of the material can solve the capacity instability problem in the existing electrode materials, and shows stable long-term cycle performance through the introduction of organic boron units

Method used

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  • Organic boron-thiophene conjugated polymer as well as preparation method and application thereof
  • Organic boron-thiophene conjugated polymer as well as preparation method and application thereof
  • Organic boron-thiophene conjugated polymer as well as preparation method and application thereof

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Embodiment Construction

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention:

[0028] Such as figure 1 Shown, a kind of organoboron-thiophene conjugated polymer (PBT1), its molecular structure such as formula is:

[0029] Among them, m=16-20;

[0030] The structural characteristics of the molecule are: (1) Since the polymer is composed of 2,5-diiodothiophene as the electron donor unit and trimethylphenylboron-2,5-diacetylene benzene as the electron acceptor unit, electrons can be Migrate in the polymer, forming delocalized conduction electrons. (2) The addition of organoboron units reduces electron transport resistance.

[0031] The polymer is synthesized through intermediate M1 and intermediate M2 (2,5-diiodothiophene), and the synthetic route is as follows:

[0032]

[0033] Under anhydrous and oxygen-free conditions, weigh monomer ...

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Abstract

The invention discloses an organic boron-thiophene conjugated polymer and a preparation method and application thereof, the molecular structural formula of the polymer is shown in the specification, and m is equal to 16-20. The polymer has excellent cycling stability, can be used as a lithium ion battery negative electrode material, has relatively good electron conduction characteristics, shows excellent cycling stability and rate capability, and has a wide application prospect in the aspect of high-rate energy storage devices.

Description

technical field [0001] The invention relates to the technical field of organic polymer lithium-ion batteries, in particular to an organic boron-thiophene conjugated polymer that can be used as a negative electrode material for lithium-ion batteries and its preparation method and application. Background technique [0002] At present, the application fields of lithium-ion batteries are becoming more and more diversified, and many special usage scenarios put forward more requirements on the performance of lithium-ion batteries, such as high power and long life. [0003] Compared with the positive electrode material, the performance of the negative electrode material plays a crucial role for the entire battery. When traditional inorganic materials are used as anode materials for lithium-ion batteries, they are prone to problems such as rapid capacity decline, poor cycle stability, large initial irreversible capacity, and low actual specific capacity. [0004] Therefore, it is n...

Claims

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Application Information

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IPC IPC(8): C08G61/12H01M4/60H01M10/0525H01M10/054
CPCC08G61/126H01M4/608H01M10/0525H01M10/054H01M2004/027C08G2261/124C08G2261/147C08G2261/228C08G2261/312C08G2261/3223C08G2261/514
Inventor 潘效波赵浩汝成龙
Owner QINGHAI UNIVERSITY
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