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Preparation method and 3D printing method of universal nano-electrode paste

A nano-electrode and 3D printing technology, applied in the field of electrochemical energy storage, can solve the problems of restricting the development of 3D printing technology and high requirements for rheological properties of 3D printing paste, and achieve the improvement of rheological properties and material dispersibility, and paste extrusion. smooth effect

Active Publication Date: 2021-03-26
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the high rheological requirements of 3D printing paste for 3D printing, the existing 3D printing paste cannot meet the requirements, which seriously restricts the further development of 3D printing technology in the energy field.

Method used

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  • Preparation method and 3D printing method of universal nano-electrode paste
  • Preparation method and 3D printing method of universal nano-electrode paste
  • Preparation method and 3D printing method of universal nano-electrode paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 700 mg of nano-lithium iron phosphate, 200 mg of graphene and 100 mg of polyvinylidene fluoride, mix them, add them into a mortar, grind for 10 minutes, add 3 mL of N-methylpyrrolidone, and continue grinding for 10 minutes to obtain the precursor of 3D printing nano-electrode slurry. grade samples, and then further make the final sample of pasty 3D printing battery electrode slurry by self-shear dispersion, the rheological properties of the prepared 3D printing battery electrode slurry are as follows: figure 1 shown.

Embodiment 2

[0029] Weigh 600mg of nano-lithium iron phosphate, 300mg of multi-walled carbon nanotubes and 100mg of polyvinylidene fluoride, mix them, add them into a mortar, grind for 10 minutes, add 2mL of N-methylpyrrolidone and continue grinding for 10 minutes to obtain 3D printing nano-electrode slurry The pre-stage samples were further made into paste-like 3D printing battery electrode paste final samples by self-shear dispersion.

Embodiment 3

[0031] Weigh 600mg of nano-lithium titanate, 300mg of conductive carbon black and 100mg of sodium carboxymethyl cellulose and mix them into a mortar. After grinding for 10 minutes, add 4mL of N pure water and continue grinding for 10 minutes to obtain the 3D printing nano-electrode slurry. Grade samples, and then further make the final sample of paste-like 3D printing battery electrode slurry by self-shear dispersion.

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PUM

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Abstract

The invention discloses universal 3D printing nano electrode slurry. The universal 3D printing nano electrode slurry is prepared from the following components: a nano electrode active material, a conductive agent, a binding agent and a dispersant, wherein the weight ratio of the nano electrode active material to the conductive agent to the binding agent is (5 to 7) to (2 to 4) to 1; the ratio of the volume of the dispersant to the total weight of the nano electrode active material, the conductive agent and the binding agent is (2 to 5 mL) to 1 g. The invention further provides a preparation method of the universal 3D printing nano electrode slurry. The universal 3D printing nano electrode slurry disclosed by the invention has the beneficial effects that the rheological property and the material dispersity of the 3D printing nano electrode slurry are improved.

Description

technical field [0001] The invention relates to the field of electrochemical energy storage. More specifically, the present invention relates to a preparation method and 3D printing method of a universal nano-electrode slurry. Background technique [0002] Lithium-ion battery is a rechargeable battery that mainly relies on lithium ions to move between the positive and negative electrodes. Due to its advantages of high energy density, high rate, low cost and no memory effect, it is widely used in mobile phones and notebook computers. , digital cameras and smart grid and other fields. Electrode materials (positive or negative electrodes) are the core unit components of lithium-ion batteries. Nano-electrode materials are considered ideal positive and negative electrode materials due to their large specific surface area, and a reasonable microstructure is another key to improve their electrochemical performance. The key is to realize the effective transmission of electricity / i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/62H01M4/139H01M10/0525
CPCH01M4/139H01M4/362H01M4/364H01M4/62H01M10/0525Y02E60/10
Inventor 田晓聪靳洪允侯书恩唐康
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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