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 a

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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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