Preparation method and application of copper selenide nanosheet array for sodium ion battery with adjustable interlayer spacing

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

Active Publication Date: 2019-10-25
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • 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 co

Method used

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  • Preparation method and application of copper selenide nanosheet array for sodium ion battery with adjustable interlayer spacing
  • Preparation method and application of copper selenide nanosheet array for sodium ion battery with adjustable interlayer spacing
  • Preparation method and application of copper selenide nanosheet array for sodium ion battery with adjustable interlayer spacing

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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 takeshigh-purity copper foil, a selenium source, sodium hydroxide, a strong reducing agent and an intercalating agent as raw materials and water as a solvent to react at 20-80 DEG C for 0.5-4 h, and the copper selenide nanosheet array for the sodium ion battery with the adjustable interlayer spacing is obtained. The copper selenide nanosheet array has the outstanding characteristics that the interlayerspacing of copper selenide is controlled at the low temperature, the preparation method of the material is simple, the energy consumption is low, and industrialization large-scale production is easy;secondly, the copper selenide nanosheet array has good alignment consistency, controllable morphology and high specific surface area. When the material is used as an anode material of the sodium ionbattery, the advantages of high specific capacity, good rate performance and superior cycle performance are shown up. Therefore, the material is expected to be widely used in the fields of sodium-ionbatteries, alkali metal ion batteries, thermoelectric materials and the like.

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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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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