CN107641782A - A kind of method that hot-dip prepares lithium band - Google Patents
A kind of method that hot-dip prepares lithium band Download PDFInfo
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- CN107641782A CN107641782A CN201710658591.5A CN201710658591A CN107641782A CN 107641782 A CN107641782 A CN 107641782A CN 201710658591 A CN201710658591 A CN 201710658591A CN 107641782 A CN107641782 A CN 107641782A
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- hot
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- dip
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Abstract
The invention discloses a kind of method that hot-dip prepares lithium band.This method comprises the following steps：Step 1, select substrate, after oil removal treatment, be sequentially placed into coarsening solution and fluxing agent and soak 20 40min, naturally dry is standby；Step 2, under vacuum environment, substrate surface treated in step 1 is smeared after lithium metal is melted, after spin coating is uniform, semi-finished product are refrigerated to obtain at 10 20 DEG C；Step 3, semi-finished product plasma is irradiated into 3 8s, whole process is carried out under an inert gas.Compared with prior art, preparation method of the present invention is simple, and gained lithium tape thickness is easy to control, and cost is cheap, gained lithium band good mechanical performance, thickness of thin, is especially suitable for electronic product and is used as battery.
Description
Technical field
The invention belongs to lithium band preparation field, and in particular to a kind of method that hot-dip prepares lithium band.
Background technology
Lithium metal is a kind of silvery white light metal, is most light alkali metal, and fusing point is 180.54 DEG C, boiling point 1317
DEG C, it is widely used in the fields such as battery, glass, ceramics, there is higher application value.But because the essential performance of lithium metal is determined
Having determined metal lithium bands has soft property, makes metal lithium bands that stretcher strain easily occur in process of production or even be broken.With
The development of science and technology, people require the thinness of lithium band more and more higher, therefore, it is necessary to a kind of more advanced technology completes lithium band
Preparation.
Hot-dip abbreviation hot dip, plating piece is entered in the metal liquid of melting make its surface form the coat of metal one
Kind process.Application number 201410443081.2, the entitled a kind of production method and production equipment of lithium band, this method include
Following steps：S10, precooling barrier film：The temperature of battery diaphragm is reduced in advance by pre-cooler；S20, molten lithium ingot：Pass through
Heater raises the temperature of lithium metal ingot, the lithium metal ingot of solid-state is become the lithium fluid of molten；S30, it is coated with lithium stream
Body：The lithium fluid of molten is coated with the battery diaphragm surface pre-cooled；S40, whole cold shut film：It is logical
Cross whole device for cooling reduces temperature again by the battery diaphragm for being coated with the lithium fluid, forms the lithium fluid sets
Lithium band.Although the problems such as lithium band that the patent is avoided in rolling process changes colour, thickness evenness is uncontrollable, realize simple, high
Effect, lithium band is reliably produced, but gained lithium band is easily peeled off, and stability is poor, and the amount of required lithium is big, and cost is high.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of method that hot-dip prepares lithium band, the party
Method step is simple, and gained thickness of coating is thin, and homogeneity is good, and production cost is low.
To solve prior art problem, the technical scheme that the present invention takes is：
A kind of method that hot-dip prepares lithium band, comprises the following steps：Step 1, substrate is selected, after oil removal treatment, successively
It is placed in coarsening solution and fluxing agent and soaks 20-40min, naturally dry is standby；Step 2, under vacuum environment, after lithium metal is melted
Substrate surface treated in step 1 is smeared, after spin coating is uniform, semi-finished product are refrigerated to obtain at 10-20 DEG C；Step 3, by semi-finished product
Plasma irradiates 3-8s, and whole process is carried out under an inert gas.
It is that the substrate is stainless steel band or ceramic band as improved.
Be as improved, in step 1 oil removing include the following component counted in parts by weight with degreaser：Surfactant
12-30 parts, pearl powder 10-23 parts, deionized water 50-70 parts.
It is that coarsening solution includes sour agent, quartz sand, castor oil and auxiliary agent, the sour agent in step 1 as improved：Quartz
Sand：The mass ratio of castor oil and auxiliary agent is 2-5：1-2：0.1-0.8：40-60.
It is that the sour agent is 1-3mmol sodium acid carbonates as improved.
It is that fluxing agent is 0.12-0.54mol/l lithium chloride solutions in step 1 as improved.
It is as improved, substrate surface etched recesses is additionally included in before step 2.
It is that the thickness of the groove is 2-8 μm as improved.
Beneficial effect：
Compared with prior art, preparation method of the present invention is simple, and the plating lithium layer thickness of gained lithium band is easy to control, and cost
It is cheap, gained lithium band good mechanical performance, thickness of thin, it is especially suitable for electronic product and is used as battery.
Embodiment
The present invention is further described in detail below by specific embodiment.
Embodiment 1
A kind of method that hot-dip prepares lithium band, comprises the following steps：
Step 1, select ceramic band, after oil removal treatment, be sequentially placed into coarsening solution and fluxing agent and soak 20min, dry in the air naturally
It is dry standby；The oil removing includes the following component counted in parts by weight with degreaser：12 parts of surfactant, 10 parts of pearl powder,
50 parts of deionized water；Coarsening solution includes 1mmol sodium acid carbonates, quartz sand, castor oil and auxiliary agent, the sour agent：Quartz sand：Castor-oil plant
The mass ratio of oil and auxiliary agent is 2：1：0.1：40, the fluxing agent is 0.12mol/l lithium chloride solutions.
Step 2, under vacuum environment, substrate surface treated in step 1 is smeared after lithium metal is melted, spin coating is uniform
Afterwards, semi-finished product are refrigerated to obtain at 10 DEG C；
Step 3, semi-finished product plasma is irradiated into 3s, whole process is carried out under an inert gas.
Embodiment 2
A kind of method that hot-dip prepares lithium band, comprises the following steps：
Step 1, select substrate, after oil removal treatment, be sequentially placed into coarsening solution and fluxing agent and soak 30min, naturally dry
Standby, the substrate is stainless steel band, and the oil removing includes the following component counted in parts by weight with degreaser：Surfactant
25 parts, 15 parts of pearl powder, 20 parts of deionized water；Coarsening solution includes 3mmol sodium acid carbonates, quartz sand, castor oil and helped in step 1
Agent, the sour agent：Quartz sand：The mass ratio of castor oil and auxiliary agent is 3：1.5：0.4：55, the fluxing agent is 0.48mol/l chlorine
Change lithium solution；
Step 2, under vacuum environment, substrate surface treated in step 1 is smeared after lithium metal is melted, spin coating is uniform
Afterwards, semi-finished product are refrigerated to obtain at 10-20 DEG C；
Step 3, semi-finished product plasma is irradiated into 5s, whole process is carried out under an inert gas.
Embodiment 3
A kind of method that hot-dip prepares lithium band, comprises the following steps：
Step 1, select ceramic band, after oil removal treatment, be sequentially placed into coarsening solution and fluxing agent and soak 40min, dry in the air naturally
It is dry standby；The oil removing includes the following component counted in parts by weight with degreaser：30 parts of surfactant, 23 parts of pearl powder,
70 parts of deionized water；Coarsening solution includes 3mmol sodium acid carbonates, quartz sand, castor oil and auxiliary agent, the sour agent：Quartz sand：Castor-oil plant
The mass ratio of oil and auxiliary agent is 5：1：0.1：60；The fluxing agent is 0.54mol/l lithium chloride solutions.
Step 2, under vacuum environment, substrate surface treated in step 1 is smeared after lithium metal is melted, spin coating is uniform
Afterwards, semi-finished product are refrigerated to obtain at 10-20 DEG C；
Step 3, semi-finished product plasma is irradiated into 3-8s, whole process is carried out under an inert gas.
Embodiment 4
A kind of method that hot-dip prepares lithium band, comprises the following steps：
Step 1, select substrate, after oil removal treatment, be sequentially placed into coarsening solution and fluxing agent and soak 30min, naturally dry
Standby, the substrate is stainless steel band, and the oil removing includes the following component counted in parts by weight with degreaser：Surfactant
25 parts, 15 parts of pearl powder, 20 parts of deionized water；Coarsening solution includes 3mmol sodium acid carbonates, quartz sand, castor oil and helped in step 1
Agent, the sour agent：Quartz sand：The mass ratio of castor oil and auxiliary agent is 3：1.5：0.4：55, the fluxing agent is 0.48mol/l chlorine
Change lithium solution；
Step 2, etch depth is 2-8 μm of groove in the substrate of cleaning, standby；
Step 3, under vacuum environment, smear in groove after lithium metal is melted, after spin coating is uniform, refrigerated at 10-20 DEG C
Semi-finished product；
Step 4, semi-finished product plasma is irradiated into 5s, whole process is carried out under an inert gas.
Comparative example 1
Lithium band prepared by existing milling techniques.
Comparative example 2
Lithium band prepared by conventional extrusion method.
Embodiment 1-4 and comparative example 1 the lithium band prepared are detected according to GB/T 20930-2007, the data obtained is such as
Shown in following table.
As can be seen that the inventive method is simple in from the above, gained lithium belt surface is straight, smooth, free from flaw, non-porous
Eye, without visual visible, and lithium layer prepares lithium band, the inventive method without foaming relative to the roll compacting or extruding of prior art
It is simpler, it is not necessary to which that extruder or milling train, production cost is low, and the lithium band of comparing embodiment 2 and embodiment 4 is understood, by base
Microetch fluting on bottom, lithium metal liquation is being smeared, is being easily controlled the thickness of lithium layer.
In addition, the invention is not restricted to above-mentioned embodiment, as long as in without departing from the scope of the present invention, can take various
Mode implements the present invention.
Claims (8)
1. a kind of method that hot-dip prepares lithium band, it is characterised in that comprise the following steps：Step 1, substrate is selected, at oil removing
After reason, it is sequentially placed into coarsening solution and fluxing agent and soaks 20-40min, naturally dry is standby；Step 2, under vacuum environment, by lithium
Substrate surface treated in step 1 is smeared after metal melting, after spin coating is uniform, semi-finished product are refrigerated to obtain at 10-20 DEG C；Step
3, semi-finished product plasma is irradiated into 3-8s, whole process is carried out under an inert gas.
2. the method that a kind of hot-dip according to claim 1 prepares lithium band, it is characterised in that the substrate is stainless steel
Band or ceramic band.
3. the method that a kind of hot-dip according to claim 1 prepares lithium band, it is characterised in that oil removing is with removing in step 1
Finish includes the following component counted in parts by weight：Surfactant 12-30 parts, pearl powder 10-23 parts, deionized water 50-70
Part.
4. the method that a kind of hot-dip according to claim 1 prepares lithium band, it is characterised in that coarsening solution bag in step 1
Include sour agent, quartz sand, castor oil and auxiliary agent, the sour agent：Quartz sand：The mass ratio of castor oil and auxiliary agent is 2-5：1-2：0.1-
0.8：40-60.
5. the method that a kind of hot-dip according to claim 1 prepares lithium band, it is characterised in that the sour agent is 1-
3mmol sodium acid carbonates.
6. the method that a kind of hot-dip according to claim 1 prepares lithium band, it is characterised in that fluxing agent is in step 1
0.12-0.54mol/l lithium chloride solutions.
7. the method that a kind of hot-dip according to claim 1 prepares lithium band, it is characterised in that also include before step 2
In substrate surface etched recesses.
8. the method that a kind of hot-dip according to claim 7 prepares lithium band, it is characterised in that the thickness of the groove is
2-8μm。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710658591.5A CN107641782A (en) | 2017-08-03 | 2017-08-03 | A kind of method that hot-dip prepares lithium band |
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| CN201710658591.5A CN107641782A (en) | 2017-08-03 | 2017-08-03 | A kind of method that hot-dip prepares lithium band |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109161831A (en) * | 2018-10-22 | 2019-01-08 | 天齐锂业（江苏）有限公司 | Hot-dip prepares the method, system and ultra-thin lithium band of ultra-thin lithium band |
| CN109360934A (en) * | 2018-08-09 | 2019-02-19 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of preparation method of ultra-thin complex lithium band |
| CN112151763A (en) * | 2019-06-28 | 2020-12-29 | 天津中能锂业有限公司 | Method for pre-lithiating negative electrode of lithium ion battery and lithium ion battery |
Citations (2)
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| CN104332586A (en) * | 2014-09-02 | 2015-02-04 | 惠州亿纬锂能股份有限公司 | Production method and production equipment of ultrathin lithium belt |
| CN106702441A (en) * | 2016-12-19 | 2017-05-24 | 天齐锂业股份有限公司 | Method for preparing lithium strip by means of continuous electrodeposition |
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2017
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104332586A (en) * | 2014-09-02 | 2015-02-04 | 惠州亿纬锂能股份有限公司 | Production method and production equipment of ultrathin lithium belt |
| CN106702441A (en) * | 2016-12-19 | 2017-05-24 | 天齐锂业股份有限公司 | Method for preparing lithium strip by means of continuous electrodeposition |
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| Title |
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| 李伟主编: "《太阳能电池材料及其应用》", 31 January 2014, 电子科技大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360934A (en) * | 2018-08-09 | 2019-02-19 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of preparation method of ultra-thin complex lithium band |
| CN109360934B (en) * | 2018-08-09 | 2021-08-06 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Preparation method of ultrathin composite lithium belt |
| CN109161831A (en) * | 2018-10-22 | 2019-01-08 | 天齐锂业（江苏）有限公司 | Hot-dip prepares the method, system and ultra-thin lithium band of ultra-thin lithium band |
| CN112151763A (en) * | 2019-06-28 | 2020-12-29 | 天津中能锂业有限公司 | Method for pre-lithiating negative electrode of lithium ion battery and lithium ion battery |
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