Preparation method of coating type zinc electrode

A zinc electrode and coating technology, applied in the field of zinc electrode preparation, can solve problems affecting battery capacity, internal resistance cycle life, electrode active material coating surface density, uneven coating thickness, poor consistency, etc., to achieve a large increase The effect of current discharge capability, thickness reduction, and uniformity improvement

Inactive Publication Date: 2020-07-28
山东合泰新能源有限公司
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating surface density and coating thickness of the electrode active materials produced by these two processes are uneven and poor in consistency, which affects the performance of the battery such as capacity, internal resistance, and cycle life.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of coating type zinc electrode
  • Preparation method of coating type zinc electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The zinc-nickel battery negative active material of the present embodiment comprises the following components: zinc oxide 60%, zinc powder 15%, bismuth oxide 3%, PTFE 3%, dispersant sodium polyacrylate 0.5%, carboxymethyl cellulose 0.5% and Water 18%.

[0031] The zinc-nickel battery negative electrode sheet 1 of this embodiment includes a current collector copper foil 3 and a negative electrode active material 2 coated on the current collector, and the negative electrode active material is the above-mentioned negative electrode active material of the zinc-nickel battery.

[0032] The preparation method of the zinc-nickel battery negative plate of the present embodiment comprises the following steps:

[0033] 1) The above-mentioned zinc-nickel battery negative electrode active material 2 is firstly weighed according to the formula ratio, mixed evenly, and then added into a mixer and stirred evenly to obtain the negative electrode slurry;

[0034] 2) The negative electr...

Embodiment 2

[0038] The zinc-nickel battery negative active material of the present embodiment comprises the following components: zinc oxide 65%, zinc powder 12%, bismuth oxide 2.5%, hydroxyethyl cellulose 2.5%, dispersant glycerin 1%, carboxymethyl cellulose 1% % with water 16%.

[0039] The zinc-nickel battery negative electrode sheet 1 of this embodiment includes a current collector copper foil 3 and a negative electrode active material 2 coated on the current collector, and the negative electrode active material is the above-mentioned negative electrode active material of the zinc-nickel battery.

[0040] The preparation method of the zinc-nickel battery negative plate of the present embodiment comprises the following steps:

[0041] 1) Mix the above-mentioned negative electrode active material 2 of the zinc-nickel battery evenly, and add it into a mixer to stir evenly to obtain the negative electrode slurry;

[0042] 2) The negative electrode slurry prepared in step 1) is coated on ...

Embodiment 3

[0045] The zinc-nickel battery negative active material of the present embodiment comprises the following components: zinc oxide 70%, zinc powder 12%, bismuth oxide 2%, PTFE 2%, dispersant sodium polyacrylate 0.5%, carboxymethyl cellulose 0.5% and Water 13%.

[0046] The zinc-nickel battery negative electrode sheet 1 of this embodiment includes a current collector copper foil 3 and a negative electrode active material 2 coated on the current collector, and the negative electrode active material is the above-mentioned negative electrode active material of the zinc-nickel battery.

[0047] The preparation method of the zinc-nickel battery negative plate of the present embodiment comprises the following steps:

[0048] 1) Mix the above-mentioned zinc-nickel battery negative electrode active material 2 evenly, and add it into a mixer to stir evenly to obtain the negative electrode slurry;

[0049] 2) Coat the negative electrode slurry prepared in step 1) on the current collector ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method of a coating type zinc electrode. The preparation method is characterized by comprising the steps of (1) homogenizing, specifically, uniformly dispersingan active component, an additive, a binder, a dispersing agent and water through a stirrer; (2) coating, specifically, uniformly coating the homogenized slurry on a base material through a coating machine, and drying to form a pole piece; (3) rolling, specifically, rolling the dried pole piece to a designed thickness; and (4) flaking, specifically, carrying out die cutting on the rolled pole pieceto obtain the designed electrode size. The preparation method has the advantages that the surface density is more uniform, the pole piece is thinner, the consistency is better, and the consistency, high-current discharge and cycle performance of the battery cell are improved.

Description

technical field [0001] The present application relates to the technical field of zinc electrode preparation, in particular to a method for preparing a coated zinc electrode. Background technique [0002] Nickel-zinc battery (zinc-nickel battery) has been developed for more than 100 years. It originated from the great scientist and inventor Edison; Edison has unlimited expectations for the large-scale application of high-voltage, high-energy, and high-power nickel-zinc batteries. . Since the technology at that time could not solve the three major problems of the difficulty of zinc gas evolution sealing, zinc dendrites, and zinc dissolution, large-scale applications could not be realized in the Edison era. With the technological breakthroughs in recent years, nickel-zinc batteries have attracted the attention of many scientists and enterprises. [0003] The nickel-zinc battery is assembled by winding the positive electrode sheet, the negative electrode sheet and the diaphrag...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01M4/28H01M4/04
CPCH01M4/0404H01M4/28H01M2004/027Y02E60/10
Inventor 刘新彪陈安陈经宁
Owner 山东合泰新能源有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap