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Preparation method and application of a copper selenide nanosheet array for sodium-ion batteries with adjustable layer spacing

A technology of sodium ion battery and nanosheet array is applied in the field of preparation of copper selenide nanosheet array for sodium ion battery, which can solve the problems of unsuitability for large-scale production, high production cost, high energy consumption equipment and the like, and achieves easy industrialization The effect of mass production, low cost and short reaction time

Active Publication Date: 2021-04-27
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation process of these similar materials all involves a large number of high energy consumption and complex equipment, the production cost is high, the cycle is long and it is not suitable for large-scale production

Method used

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  • Preparation method and application of a copper selenide nanosheet array for sodium-ion batteries with adjustable layer spacing
  • Preparation method and application of a copper selenide nanosheet array for sodium-ion batteries with adjustable layer spacing
  • Preparation method and application of a copper selenide nanosheet array for sodium-ion batteries with adjustable layer spacing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of a copper selenide nanosheet array for a sodium ion battery with adjustable layer spacing in this embodiment is as follows:

[0035] (1) Cut the high-purity copper foil into a size of 1 cm×1 cm, and pass through acetone, 1 mol L -1 Hydrochloric acid solution and deionized water were ultrasonically washed to remove organic matter and oxides on the copper foil surface, and then dried in vacuum at 60 °C for 5 h.

[0036] (2) Dissolve 4 g sodium hydroxide in 100 ml, 0.001 mol L -1 0.110 g (0.001 mol) of selenium dioxide and 0.189 g (0.005 mol) of sodium borohydride were added in sequence, and stirred rapidly at 20°C for 10 min to completely dissolve the raw materials to obtain solution A.

[0037] (3) Put the copper foil treated in step (1) in solution A, react at 20 °C for 4 h, take out the copper foil, wash it with deionized water and ethanol several times, and then dry it in vacuum at 60 °C for 10 h That is, a copper selenide nanosheet array fo...

Embodiment 2

[0045] The preparation method of a copper selenide nano-array for a sodium-ion battery with adjustable layer spacing in this embodiment is as follows:

[0046] (1) Cut the high-purity copper foil into a size of 1 cm×1 cm, and pass through acetone, 1 mol L -1 Hydrochloric acid solution and deionized water were ultrasonically washed to remove organic matter and oxides on the copper foil surface, and then dried in vacuum at 60 °C for 5 h.

[0047] (2) Dissolve 8 g sodium hydroxide in 100 ml, 0.005 mol L -1 0.346 g (0.002 mol) of sodium selenite and 0.378 g (0.01 mol) of sodium borohydride were added in sequence, and stirred rapidly at 30°C for 30 minutes to completely dissolve the raw materials to obtain solution A.

[0048] (3) Put the copper foil treated in step (1) in solution A, react at 30 °C for 4 h, take out the copper foil, wash it with deionized water and ethanol several times, and then dry it in vacuum at 60 °C for 10 h That is, a copper selenide nanosheet array for s...

Embodiment 3

[0051] The preparation method of a copper selenide nano-array for a sodium-ion battery with adjustable layer spacing in this embodiment is as follows:

[0052] (1) Cut the high-purity copper foil into a size of 1 cm×1 cm, and pass through acetone, 1 mol L -1 Hydrochloric acid solution and deionized water were ultrasonically washed to remove organic matter and oxides on the copper foil surface, and then dried in vacuum at 60 °C for 5 h.

[0053] (2) Dissolve 10 g sodium hydroxide in 100 ml, 0.01 mol L -1 0.237 g (0.003 mol) of selenium powder and 0.81 g (0.015 mol) of potassium borohydride were added in sequence, and stirred rapidly at 40 °C for 60 min to completely dissolve the raw materials to obtain solution A.

[0054] (3) Put the copper foil treated in step (1) in solution A, react at 40 °C for 3 h, take out the copper foil, wash it with deionized water and ethanol several times, and then dry it in vacuum at 60 °C for 10 h That is, a copper selenide nanosheet array for s...

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Abstract

The invention provides a preparation method and application of a copper selenide nanosheet array for a sodium ion battery with adjustable interlayer spacing. The copper selenide nanosheet array is made of high-purity copper foil, a selenium source, sodium hydroxide, A strong reducing agent and an intercalation agent are used as raw materials, water is used as a solvent, and a reaction is performed at 20-80° C. for 0.5-4 h to obtain a copper selenide nanosheet array for sodium-ion batteries with adjustable layer spacing. The prominent feature of the present invention is that the distance between copper selenide layers can be regulated at a lower temperature, and the preparation method of the material is simple, the energy consumption is low, and it is easy to industrialized large-scale production; Controllable appearance and high specific surface area. When the material is used as an anode material for a sodium ion battery, it exhibits the advantages of high specific capacity, good rate performance and superior cycle performance. Therefore, the material is expected to be widely used in sodium ion batteries and other alkali metal ion batteries, thermoelectric materials and other fields.

Description

technical field [0001] The invention relates to the field of preparation of negative electrode materials for sodium ion batteries, in particular to a preparation method and application of copper selenide nanosheet arrays for sodium ion batteries with adjustable layer spacing. Background technique [0002] Energy and the environment are two major issues that must be addressed for human survival and social development today. With the depletion of fossil resources such as coal and petroleum and the deterioration of the environment, the development of renewable energy such as solar energy, wind energy, and water energy has become a global trend. With a large amount of renewable energy and distributed energy connected to the grid, in order to overcome the irregular and intermittent output characteristics of wind or solar power, energy storage batteries are widely used in power generation, transmission and distribution, and power consumption. [0003] Although lithium-ion batterie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/04H01M4/58H01M10/054B82Y40/00H01M4/02
CPCB82Y40/00C01B19/007C01B19/04C01P2004/20C01P2004/52C01P2004/61C01P2004/64H01M4/581H01M10/054H01M2004/027Y02E60/10
Inventor 肖元化方少明赵晓兵王雪兆周立明吴诗德张凯扬
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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