Preparation method for carbon negative electrode material of sodium ion battery

A carbon anode material, sodium ion battery technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as the limitation of anode material selection, and achieve the effect of reducing production and storage costs, low cost, and conducive to transmission

Inactive Publication Date: 2018-01-26
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, many researches on sodium-ion batteries are mainly focused on positive electrode materials, while the choice of negative electrode materials is more limited.

Method used

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  • Preparation method for carbon negative electrode material of sodium ion battery
  • Preparation method for carbon negative electrode material of sodium ion battery
  • Preparation method for carbon negative electrode material of sodium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: the preparation method of this sodium ion battery carbon negative electrode material, concrete operation is as follows:

[0023] (1) First, wash and dry the collected cherry blossom petals to obtain product A;

[0024] (2) The product A obtained in step (1) was placed in a tube furnace and calcined in an Ar atmosphere at a temperature of 1000 °C for 1 h to obtain product B;

[0025] (3) The product B obtained in step (2) was taken out and placed in a 3mol / L HCl solution, and soaked at 20°C for 6 hours to obtain product C;

[0026] (4) The product C obtained in step (3) is fully washed with deionized water, and dried to obtain a carbon negative electrode material for a sodium ion battery.

[0027] Material Characterization

[0028] The crystal structure of carbon anode materials for sodium-ion batteries was analyzed by X-ray powder diffractometer (using Rigaku miniFlex600 diffractometer with Cu Kα ray source), as figure 1 As shown, it can be seen from th...

Embodiment 2

[0032] Embodiment 2: the preparation method of this sodium ion battery carbon negative electrode material, concrete operation is as follows:

[0033] (1) First, wash and dry the collected cherry blossom petals to obtain product A;

[0034] (2) The product A obtained in step (1) was placed in a tube furnace and calcined at 600 °C for 6 h in an Ar atmosphere to obtain product B;

[0035] (3) The product B obtained in step (2) was taken out and placed in a 2mol / L HCl solution and soaked for 12 h at a temperature of 25°C to obtain product C;

[0036] (4) The product C obtained in step (3) is fully washed with deionized water, and dried to obtain a carbon negative electrode material for a sodium ion battery.

Embodiment 3

[0037] Embodiment 3: the preparation method of this sodium ion battery carbon negative electrode material, concrete operation is as follows:

[0038] (1) First, wash and dry the collected cherry blossom petals to obtain product A;

[0039] (2) Place the product A obtained in step (1) in a tube furnace, under N 2 In the atmosphere, calcined at a temperature of 800 °C for 5 h to obtain product B;

[0040] (3) The product B obtained in step (2) was taken out and placed in a 1mol / L HCl solution for 9 h at a temperature of 23°C to obtain product C;

[0041] (4) The product C obtained in step (3) is fully washed with deionized water, and dried to obtain a carbon negative electrode material for a sodium ion battery.

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Abstract

The invention relates to a preparation method for a carbon negative electrode material of a sodium ion battery, and belongs to the technical field of synthesis of a new energy material. The preparation method comprises the steps of washing and drying acquired sakura petals, performing calcination in a protection atmosphere, taking out a product after reaction is completed, placing the product in an HC1 solution, immersing the product under a room temperature, and finally, fully washing the immersed product with deionized water and obtaining the carbon negative electrode material of the sodiumion battery after drying. According to the preparation method, the sakura petals are used as a raw material and are successfully converted to a carbon material by high-temperature calcination, the carbonized petals are immersed in an acid liquid to remove inorganic particles formed in a surface, and the sheet-shaped carbon negative electrode material with a corrugated surface of the sodium ion battery is obtained. The material is beneficial for rapid ion and electron transmission and is suitably used as a high-activity electrode material for the sodium ion battery.

Description

technical field [0001] The invention relates to a preparation method of a carbon negative electrode material of a sodium ion battery, belonging to the technical field of new energy material synthesis. Background technique [0002] With the widespread application of portable electronic devices and electric vehicles, energy storage technology is becoming increasingly important to the development of society. As the most widely used energy storage battery system at this stage, lithium-ion batteries dominate the fields of portable electronic devices and electric vehicles due to their advantages of high energy density, good rate performance and long cycle life. However, due to the scarcity and uneven distribution of lithium resources, the further large-scale application of lithium-ion batteries is limited, and it is very critical to develop other cheap energy storage battery systems. [0003] In contrast, sodium is rich in resources, low in cost, and has similar physicochemical p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/583H01M10/054
CPCY02E60/10
Inventor 张英杰李雪朱子翼曾晓苑董鹏张明宇杨玺韦克毅
Owner KUNMING UNIV OF SCI & TECH
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