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Self-supporting sodium ion battery negative electrode material based on 3D printing and preparation method thereof

A sodium ion battery, 3D printing technology, applied in the direction of 3D object support structure, battery electrode, carbon preparation/purification, etc., can solve the problem of active material detached from the current collector, and achieve improved sodium storage performance, low energy consumption, and shape controllable effect

Active Publication Date: 2020-06-02
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the disadvantage that the traditional electrode uses dispersants, conductive agents, and binders to fix the active material on the copper sheet, which easily causes the active material to separate from the current collector when the electrode is bent. FDM 3D printing technology is used to provide a A kind of self-supporting sodium ion battery negative electrode material and preparation method thereof

Method used

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  • Self-supporting sodium ion battery negative electrode material based on 3D printing and preparation method thereof
  • Self-supporting sodium ion battery negative electrode material based on 3D printing and preparation method thereof
  • Self-supporting sodium ion battery negative electrode material based on 3D printing and preparation method thereof

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Effect test

Embodiment 1

[0037] 1. A self-supporting sodium ion battery negative electrode material based on 3D printing, characterized in that it is made of the following components in weight percentage:

[0038] PLA40

[0039] Chlorella 58

[0040] white oil 2

[0041] 2. A method for preparing a self-supporting sodium-ion battery negative electrode material based on 3D printing, comprising the following steps:

[0042] A. After mixing PLA, pellets and white oil in the formula quantity, melt and extrude granulation through twin-screw extruder. The process parameters of twin-screw extruder are 123, 135, 142, 160, 166, 170 , 170, 165, 155, 140 ℃, die head temperature is 170 ℃, screw speed is 50 rpm;

[0043] B. Pull the obtained pellets into 3D printing wire through a single-screw wire extruder. The process parameters of the single-screw wire extruder are the processing temperature of 180°C, the screw speed of 20 rpm, and the water temperature of the first stage of water cooling is 40°C; the second...

Embodiment 2

[0050] 1. A self-supporting sodium ion battery negative electrode material based on 3D printing, characterized in that it is made of the following components in weight percentage:

[0051] ABS50

[0052] Chlorella 49

[0053] white oil 1

[0054] 2. A method for preparing a self-supporting sodium-ion battery negative electrode material based on 3D printing, comprising the following steps:

[0055] A. After mixing the ABS, pellets and white oil in the formula amount, melt and extrude the pellets through the twin-screw extruder. The process parameters of the twin-screw extruder are 130, 145, 152, 170, 186, 200 , 200, 195, 190, 185 ℃, the die head temperature is 180 ℃, the screw speed is 80 rpm;

[0056] B. Pull the obtained pellets into 3D printing wire through a single-screw wire extruder. The process parameters of the single-screw wire extruder are the processing temperature of 200°C, the screw speed of 20 rpm, and the water temperature of the first stage of water cooling i...

Embodiment 3

[0062] 1. A self-supporting sodium ion battery negative electrode material based on 3D printing, characterized in that it is made of the following components in weight percentage:

[0063] TPU / ABS(50wt%:50wt%) 38

[0064] Chlorella 59

[0065] white oil 3

[0066] 2. A method for preparing a self-supporting sodium-ion battery negative electrode material based on 3D printing, comprising the following steps:

[0067] A. After mixing the TPU / ABS (50wt%:50wt%), pellets and white oil of the formula amount, the twin-screw extruder is melted and extruded to granulate. The twin-screw extruder process parameters are that the temperature of each section is 130, 145, 150, 165, 180, 190, 190, 185, 180, 180°C, die head temperature is 170°C, screw speed is 60 rpm;

[0068] B. Pull the obtained pellets into 3D printing wire through a single-screw wire extruder. The process parameters of the single-screw wire extruder are processing temperature 190°C, screw speed 30 rpm, and water temperat...

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Abstract

The invention discloses a self-supporting sodium ion battery negative electrode material based on 3D printing and a preparation method thereof. The preparation method comprises the following steps: a,uniformly mixing matrix resin, chlorella and other raw materials; b, carrying out melt granulation and extrusion to obtain a wire rod; c, printing a three-dimensional electrode plate structure on carbon fiber prepreg cloth through an FDM 3D printing technology; and d, adsorbing a vanadium source by utilizing the electrode plate printed on the carbon fiber prepreg cloth, and carrying out drying and selenizing to obtain a self-supporting V / Se-chlorella derived carbon sodium ion battery negative electrode. The 3D printing technology is adopted, and a chlorella-containing wire is used as a printing material, so that the three-dimensional electrode plate structure with adjustable size and designable shape is prepared, and then, the vanadium source is introduced to the electrode plate to obtainthe self-supporting electrode plate structure with excellent performance; and secondly, the complex technological process where a conductive agent and a binding agent need to be added into a common powdery active material in the battery assembling process to form slurry, and then the current collector is coated with the slurry is avoided.

Description

technical field [0001] The invention belongs to the technical field of preparation of electrode materials for sodium ion batteries, and in particular relates to a self-supporting negative electrode material for sodium ion batteries based on 3D printing and a preparation method thereof. Background technique [0002] Lithium-ion batteries commercially used have the advantages of large specific capacity, long cycle life, wide operating temperature range, safety and pollution-free, and are widely used in their respective energy storage devices. However, the uneven distribution and limited lithium resources in the earth's crust cannot meet the needs. Future energy storage needs. The specific capacity of sodium-ion batteries is lower than that of lithium, but its abundant reserves (2.36 wt% Na vs 0.0017 wt% Li) and similar energy storage mechanism to lithium-ion batteries make sodium-ion batteries an extremely promising alternative to lithium-ion batteries. Development potential ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05B29C64/118B33Y10/00B33Y70/00H01M4/583H01M4/587H01M10/054
CPCC01B32/05B29C64/118B33Y10/00B33Y70/00H01M4/583H01M4/587H01M10/054C01P2004/03Y02E60/10
Inventor 许丽洪曾令兴夏新曙黄宝铨郑荧炼杨裕金陈庆华钱庆荣
Owner FUJIAN NORMAL UNIV
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