Poly-anthraquinone sulfide and Fe3O4 composite material as well as preparation method and application thereof

A technology of sulfide and polyanthracene, which is applied in the direction of active material electrodes, structural parts, alkaline storage batteries, etc., can solve the problems of poor cycle stability of electrodes, structural changes of electrode materials, and low rate performance, so as to achieve low raw material prices and improve electrical conductivity. Good effect on performance, specific capacity and rate performance

Active Publication Date: 2022-07-22
XINYANG NORMAL UNIVERSITY
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  • Description
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Problems solved by technology

[0004] In view of above-mentioned analysis, the present invention aims to provide a kind of polyanthraquinone sulfide and Fe 3 o 4 The composite material and its preparation method and application are used to solve the following technical problems: the structure of the electrode material will change during the cycle of the existing iron-based negative electrode material, and a passivation layer will gradually appear, resulting in poor electrode cycle stability and high rate low performance

Method used

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  • Poly-anthraquinone sulfide and Fe3O4 composite material as well as preparation method and application thereof
  • Poly-anthraquinone sulfide and Fe3O4 composite material as well as preparation method and application thereof
  • Poly-anthraquinone sulfide and Fe3O4 composite material as well as preparation method and application thereof

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preparation example Construction

[0032] The invention provides a kind of polyanthraquinone sulfide and Fe 3 O 4 The preparation method of the composite material comprises the following steps:

[0033] Step 1. Under a protective atmosphere, the Fe 3 O 4 Nanoparticles and 1,5-dichloroanthraquinone are stirred and dispersed into methylpyrrolidone (NMP) to obtain a precursor solution;

[0034] Step 2, adding sodium sulfide to the above-mentioned precursor solution;

[0035] Step 3, raising the temperature of the reaction system to carry out the reaction, cooling to room temperature after the reaction is completed, washing and drying the product to obtain polyanthraquinone sulfide (PAQS) and Fe 3 O 4 composite material.

[0036] Specifically, in the above step 1, considering Fe 3 O 4 Excessive molar ratio of nanoparticles to 1,5-dichloroanthraquinone will lead to poor structural stability of the PAQS embedded layer, thereby affecting the cycling stability of the electrode, while too small ratio will lead t...

Embodiment 1

[0057] This embodiment provides a kind of polyanthraquinone sulfide and Fe 3 O 4 A method for preparing a composite material, comprising:

[0058] Under the protection of argon, 1.0 g Fe 3 O 4 Nanoparticles and 2.77g of 1,5-dichloroanthraquinone were dispersed in 30ml of methylpyrrolidone, stirred for 30 minutes to prepare a uniform precursor solution; 2.40g of sodium sulfide nonahydrate was added to the above precursor solution, and the solution was heated at 200°C. Under the temperature, the reaction was stirred for 14 h; the reaction product was filtered and washed with deionized water at 70 °C for 3 times, and then filtered and washed with acetone for 3 times. The obtained sample was vacuum-dried at 120 °C for 12 h to obtain polyanthraquinone sulfide and Fe 3 O 4 composite material. Na 2 S·9H 2 The molar ratio of O to 1,5-dichloroanthraquinone was 1:1.

[0059] tested, figure 1 The polyanthraquinone sulfide (PAQS) and Fe prepared in Example 1 of the present invent...

Embodiment 2

[0064] This embodiment provides a kind of polyanthraquinone sulfide and Fe 3 O 4 The preparation method of the composite material comprises: under the protection of argon, 1.0g Fe 3 O 4 Nanoparticles and 2.22g of 1,5-dichloroanthraquinone were dispersed in 30ml of methylpyrrolidone and stirred for 25 minutes to prepare a uniform precursor solution; 1.92g of sodium sulfide nonahydrate was added to the above precursor solution, and the solution was heated at 210°C. At the temperature, the reaction was stirred for 15h. The reaction product was filtered and washed with deionized water at 60 °C for three times, and then filtered and washed with acetone for three times. The obtained sample was vacuum-dried at 110 °C for 15 h to obtain polyanthraquinone sulfide and Fe. 3 O 4 composite material.

[0065] After testing, the polyanthraquinone sulfide prepared in this example and Fe 3 O 4 Polyanthraquinone sulfide (PAQS) and Fe were detected in the composite material 3 O 4 X-ray...

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Abstract

The invention discloses a polyanthraquinone sulfide and Fe3O4 composite material as well as a preparation method and application thereof, belongs to the technical field of water-phase alkaline energy storage system electrode materials, and solves the problems that the structure of an electrode material can be changed in the circulating process of an existing iron-based negative electrode material, a passivation layer can be gradually generated, and the service life of the electrode material is prolonged. And therefore, the problems of poor electrode cycling stability and low rate capability are solved. Comprising the following steps: step 1, stirring and dispersing Fe3O4 nanoparticles and 1, 5-dichloroanthraquinone into methyl pyrrolidone in a protective atmosphere to obtain a precursor solution; step 2, adding sodium sulfide into the precursor solution; and step 3, raising the temperature of the reaction system for reaction, cooling to room temperature after the reaction is finished, and washing and drying the product to obtain the poly-anthraquinone sulfide and Fe3O4 composite material. The poly-anthraquinone sulfide and Fe3O4 composite material disclosed by the invention is good in rate capability and high in cycling stability.

Description

technical field [0001] The invention belongs to the technical field of electrode materials for water-phase alkaline energy storage systems, and in particular relates to a polyanthraquinone sulfide and Fe 3 O 4 Composite materials and methods of making and using the same. Background technique [0002] With the rapid development of the new energy industry, the demand for large-scale energy storage devices is growing. Large-scale energy storage devices have high requirements for safety, price, and service life. Among many energy storage systems, the alkaline water phase energy storage system has no risk of combustion and explosion, the electrode material is cheap, the theoretical capacity is high, the battery assembly and post-maintenance are simple, and the service life can reach more than 10 years, which can well meet the needs of large-scale energy storage needs. At present, the performance of alkaline batteries is mainly limited by the anode material. Common anode mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/04C08K3/22H01M4/36H01M4/52H01M4/60H01M4/62H01M10/24H01M4/02
CPCC08K3/22H01M4/362H01M4/521H01M4/602H01M4/628H01M4/624H01M10/24H01M2004/027C08K2003/2272C08K2201/011C08L2203/20C08L81/04Y02E60/10
Inventor 武旭何川涂航旗黄梦恬张欢欢黄克靖
Owner XINYANG NORMAL UNIVERSITY
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