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Preparation method of metallic lithium strip and metallic lithium strip prepared by the same

A technology of metal lithium and lithium strips, applied in the field of lithium metal, can solve the problems of small metal lithium strips, difficult to generate thickness, etc., and achieve the effect of reducing adhesion, small thickness, and convenient industrial production.

Active Publication Date: 2015-10-21
GUANGDONG ZHUGUANG NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to produce metal lithium strips with a small thickness by the existing technology

Method used

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  • Preparation method of metallic lithium strip and metallic lithium strip prepared by the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Substrate treatment: Choose two PET polyester films with a thickness of 0.1mm as the substrate, and then apply a layer of silicone oil on each surface of the two substrates to obtain the pretreated substrate;

[0031] Lithium sheet preparation: use metal lithium powder as the lithium source, and place it between the two substrates after the above pretreatment, and the treatment layer is on the same side as the lithium; roll it with a pair of rollers (a roller and b roller) , The roller radius of roller a and roller b are both 400mm. During the rolling process, the roller speed of roller a and roller b are both 1m / s. The gap between the two rollers is controlled to 0.203mm, and then the metal lithium is uniformly distributed in Composite metal lithium belt between two films.

Embodiment 2

[0033] The difference from Example 1 is that the radius of the roll a and roll b used in rolling are 400 mm and 600 mm, respectively.

[0034] The rest is the same as Embodiment 1, and will not be repeated.

Embodiment 3

[0036] The difference from Example 1 is that the radius of the roller a and the roller b used in rolling are 200 mm and 400 mm, respectively.

[0037] The rest is the same as Embodiment 1, and will not be repeated.

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Abstract

Belonging to the technical field of metal lithium, the invention particularly relates to a preparation method of a metallic lithium strip. The method includes: firstly selecting a substrate, then treating the substrate with a lubricant, placing a lithium source cloth between two layers of treated substrates, and then performing rolling to obtain a composite lithium strip, selecting the radius ratio of the rolling rollers and adjusting the speed of the double rollers in the rolling process to make the bonding force between the lithium strip and the two layers of substrates different, and finally peeling the substrate with small bonding force to the lithium layer in the composite lithium strip, thus obtaining a single side self-supported metallic lithium strip. The method for preparation of metallic lithium strip is simple, and the prepared lithium strip has good thickness uniformity.

Description

Technical field [0001] The invention belongs to the technical field of lithium metal, and particularly relates to a method for preparing a metal lithium belt. Background technique [0002] Due to the high energy density of lithium batteries, after entering the 21st century, they play an increasingly important role in energy storage devices. With the continuous development of miniaturization and long standby of portable electronic devices using these lithium batteries, these devices have put forward higher and higher requirements for the energy density of lithium batteries. Therefore, how to improve the energy density of lithium batteries has become the most important research direction for researchers in the field of lithium battery research. [0003] Lithium batteries include metal lithium negative batteries and lithium ion batteries. [0004] For lithium-ion batteries, due to the electrode materials, solid electrolyte membranes (SEI membranes) are formed during the first charging...

Claims

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Application Information

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IPC IPC(8): H01M4/04H01M4/1395H01M4/134
CPCH01M4/043H01M4/0435H01M4/134H01M4/1395Y02E60/10
Inventor 杨玉洁
Owner GUANGDONG ZHUGUANG NEW ENERGY TECH
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