CN117000761A - Device for preparing ultrathin alkali metal strip - Google Patents

Device for preparing ultrathin alkali metal strip Download PDF

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Publication number
CN117000761A
CN117000761A CN202311031371.1A CN202311031371A CN117000761A CN 117000761 A CN117000761 A CN 117000761A CN 202311031371 A CN202311031371 A CN 202311031371A CN 117000761 A CN117000761 A CN 117000761A
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CN
China
Prior art keywords
roller
alkali metal
pole piece
metal strip
press roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311031371.1A
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Chinese (zh)
Inventor
张斌
邹崴
杨粟平
向江雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianqi Weilan Solid Lithium New Materials Huzhou Co ltd
Original Assignee
Tianqi Weilan Solid Lithium New Materials Huzhou Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by Tianqi Weilan Solid Lithium New Materials Huzhou Co ltd filed Critical Tianqi Weilan Solid Lithium New Materials Huzhou Co ltd
Priority to CN202311031371.1A priority Critical patent/CN117000761A/en
Publication of CN117000761A publication Critical patent/CN117000761A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B13/04—Three-high arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/043—Processes of manufacture in general involving compressing or compaction
    • H01M4/0435—Rolling or calendering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Cell Electrode Carriers And Collectors (AREA)

Abstract

The invention relates to a device for preparing an ultrathin alkali metal strip, which comprises a first alkali metal unreeling roller, a rolling mechanism, a current collector unreeling roller and an ultrathin solid pole piece rolling roller, wherein the rolling mechanism comprises a first press roller, a second press roller is arranged at the left end of the first press roller, a third press roller is arranged at the right end of the first press roller, the second press roller and the third press roller are arranged side by side, the first alkali metal unreeling roller and the ultrathin solid pole piece rolling roller are both arranged above the rolling mechanism, and the current collector unreeling roller is arranged below the rolling mechanism. Through rolling and rolling twice, the pressure and the roll gap can be regulated on line in real time when the alkali metal rolling is compounded on the current collector, the load stress of the pole piece is uniform, the linear characteristic is realized, the consistency of the thickness of the pole piece is well controlled, and when the ultrathin pole piece is rolled, the pole piece can also be rolled and rolled for one time by the alkali metal with good rolling effect, so that the quality of the rolled pole piece is greatly improved.

Description

Device for preparing ultrathin alkali metal strip
Technical Field
The invention relates to the technical field of new energy, in particular to a device for preparing an ultrathin alkali metal strip.
Background
With the rapid development of new energy, various performance requirements on lithium batteries are also higher and higher, but the lithium ion batteries have reached a certain bottleneck from the current industry situation. However, the solid-state battery just compensates for the defects of the lithium ion battery, and the solid-state battery technology is also becoming mature, and the market has been shifted from the laboratory, so that higher demands are placed on the capacity, safety, manufacturing cost and the like of the solid-state battery.
In the manufacturing process of the solid-state battery, if the alkali metal can be ultrathin (5-10 mu) and uniformly attached to the current collector pole piece, the improvement of the energy density and the safety of the solid-state battery can be facilitated, so that the enterprise benefit is improved, and the enterprise competitiveness is enhanced.
The production of the lithium metal cathode in the existing market mainly takes extrusion roll forming, so that pure lithium metal foil can be produced, and composite lithium metal cathodes in which the lithium metal foil is composited with other metal or nonmetal base materials can be produced, and the industrial mass production of roll-to-roll has been realized.
The patent number is CN115591938A, the application date is 2022-10-31, and a lithium metal battery pole piece, rolling equipment for pressing the lithium metal battery pole piece, a production system and a method are disclosed, wherein the rolling equipment comprises a rolling mechanism for rolling a strip, and the rolling mechanism comprises a first press roll arranged on one side of the strip, a second press roll arranged on the opposite side of the strip and a pressure-bearing roll in contact with the second press roll; the circle centers of the first compression roller, the second compression roller and the bearing roller are on the same straight line; the relation among the radius R1 of the first press roller, the radius R2 of the second press roller and the radius Rc of the pressure-bearing roller is as follows: r1 > Rc > R2; the number N of the pressure bearing rollers is more than or equal to 1.
The pressure of the roller mechanism can be reduced by adopting an asymmetric multi-roller rolling mechanism and differential rolling, a lithium metal foil or a lithium metal composite foil with a width of up to 600mm can be prepared, the thickness can be from 5 mu m to 2mm, and almost all design requirements of the existing lithium metal battery and future solid-state batteries can be met. However, the preparation of the alkali metal by rolling and rolling once is adopted, as the alkali metal has strong ductility, rebound can occur after rolling and rolling, so that the convexity change of the pole piece is larger, the alkali metal is difficult to manufacture into an ultrathin state, and the situation that the thickness of the pole piece is inconsistent easily occurs, especially under the situation that a large-capacity and large-size solid-state lithium battery is pursued at present, the thickness of the composite of the alkali metal and the pole piece current collector is uneven, the uneven thickness of the alkali metal can cause abrupt change of the pole piece load, the rolling speed is further improved, the pole piece rolling has nonlinearity and time variability, the pole piece load is nonlinear, and the design and control of the conventional equipment are challenged.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device for preparing an ultrathin alkali metal strip, which is characterized in that the alkali metal strip is rolled and rolled twice, so that the alkali metal strip is compounded on a current collector, the online real-time adjustment of pressure and roll gap can be realized, the load stress of a pole piece is uniform, the linear characteristic is realized, the consistency of the thickness of the pole piece is well controlled, and when the ultrathin pole piece is rolled, the pole piece can be rolled and rolled for one time with good rolling effect, so that the quality of the rolled pole piece is greatly improved.
The technical scheme adopted for solving the technical problems is as follows:
the device for preparing the ultrathin alkali metal strip comprises a first alkali metal unreeling roller, a rolling mechanism, a current collector unreeling roller and an ultrathin solid pole piece rolling roller, wherein the rolling mechanism comprises a first press roller, a second press roller is arranged at the left end of the first press roller, a third press roller is arranged at the right end of the first press roller, the second press roller and the third press roller are arranged side by side, the first alkali metal unreeling roller and the ultrathin solid pole piece rolling roller are both arranged above the rolling mechanism, and the current collector unreeling roller is arranged below the rolling mechanism;
the device comprises a first alkali metal unreeling roller, a first pressing roller, a ultrathin solid pole piece reeling roller, a current collector unreeling roller, a third pressing roller, a pole piece current collector, a first alkali metal strip and a second alkali metal strip, wherein one end of the first alkali metal strip is wound on the first alkali metal unreeling roller, the other end of the first alkali metal strip bypasses the first pressing roller and is connected with the ultrathin solid pole piece reeling roller, one end of the pole piece current collector is wound on the current collector unreeling roller, and the other end of the pole piece current collector bypasses the third pressing roller and is connected with the ultrathin solid pole piece reeling roller.
The thickness of the first alkali metal strip between the first alkali metal unreeling roller and the first pressing roller is A1, the thickness of the first alkali metal strip which bypasses on the first pressing roller is A2, the pole piece current collector is attached to the first alkali metal unreeling roller to form an ultrathin alkali metal strip, and the thickness of the ultrathin alkali metal strip is A3.
The winding device comprises a first alkali metal unwinding roller, a second alkali metal unwinding roller and a fourth pressing roller, wherein one end of a first alkali metal strip is wound on the first alkali metal unwinding roller, the other end of the first alkali metal strip bypasses the third pressing roller to be connected with an ultrathin solid pole piece winding roller, and the fourth pressing roller is arranged at the right end of the third pressing roller.
The thickness of the second alkali metal strip between the second alkali metal unreeling roller and the fourth press roller is A1, the thickness of the second alkali metal unreeling roller wound on the third press roller is A4, and the second alkali metal unreeling roller is arranged above the fourth press roller.
The dimension of A1 is 0.3mm, the dimension of A2 is 10um, the dimension of A3 is 0.2um, and the dimension of A4 is 10um.
The first press roller, the second press roller, the third press roller and the fourth press roller are all heating rollers, and the heating temperature is 50-60 ℃.
The pressure among the first compression roller, the second compression roller, the third compression roller and the fourth compression roller is 5-8T.
The beneficial effects of the invention are as follows:
1. by pressing the alkali metal strip twice, the single stretching rate of the alkali metal is much lower than that of the traditional single pressing, the rebound stress and the rolling force required during pressing can be effectively reduced, the thickness of the pressed alkali metal strip is more uniform, and the method is particularly effective in the thickness uniformity of pressing the wide alkali metal strip.
2. The solid-state battery pole piece is prepared by carrying out twice pressing and compounding on the alkali metal belt, so that the preparation efficiency and the qualification rate are higher compared with those of the traditional preparation method, the requirement on the thickness consistency of incoming materials is higher because the traditional preparation method is one-time pressing, when the width of the alkali metal belt is wider, the thickness after pressing is uneven, the rebound stress and the deformation can be fully released during the first pressing and compounding are carried out twice, and the thickness requirement is met during the second pressing, so that the requirement on the thickness consistency of the incoming materials of the alkali metal belt is lower, the method can be better adapted to the incoming materials with wide width, and the application range is wider.
3. The solid-state battery pole piece is formed by pressing and compounding the alkali metal belt twice in the preparation process, compared with the traditional one-time preparation, the force born by the pressing roller is much smaller, and a hydraulic servo control closed loop system with large transmission force and power is introduced, so that the alkali metal is rolled and compounded on the current collector, and the online real-time adjustment of the pressure and the roller gap can be realized, therefore, under the condition of the same roller size, the smaller the roller deformation is, the thinner and more uniform the thickness of the pressed alkali metal belt is. The capacity of the finished solid-state battery can be improved, and the economic benefit is improved.
Drawings
FIG. 1 is a schematic diagram of a single-sided alkali metal and current collector composite structure in accordance with the present invention;
FIG. 2 is a schematic diagram of a double-sided alkali metal and current collector composite structure in accordance with the present invention;
FIG. 3 is an enlarged schematic view of FIG. 1 at B;
FIG. 4 is an enlarged schematic view of FIG. 1 at C;
the figure shows: 1-a first alkali metal unreeling roller; 2-a current collector unreeling roller; 3-ultrathin solid pole piece winding roller; 4-a first press roll; 5-a second press roll; 6-a third press roll; 7-a first alkali metal strip; 8-pole piece current collector; 9-a second alkali metal unreeling roller; 10-a fourth press roll; 11-a second alkali metal strip.
Detailed Description
The invention will be further described with reference to the drawings and examples.
The device for preparing the ultrathin alkali metal strip comprises a first alkali metal unreeling roller 1, a rolling mechanism, a current collector unreeling roller 2 and an ultrathin solid pole piece rolling roller 3, wherein the rolling mechanism comprises a first press roller 4, a second press roller 5 is arranged at the left end of the first press roller 4, a third press roller 6 is arranged at the right end of the first press roller 4, the second press roller 5 and the third press roller 6 are arranged side by side, the first alkali metal unreeling roller 1 and the ultrathin solid pole piece rolling roller 3 are both arranged above the rolling mechanism, and the current collector unreeling roller 2 is arranged below the rolling mechanism;
one end of a first alkali metal strip 7 is wound on the first alkali metal unreeling roller 1, the other end of the first alkali metal strip 7 bypasses the first press roller 4 and is connected with the ultrathin solid pole piece winding roller 3, one end of a pole piece current collector 8 is wound on the current collector unreeling roller 2, and the other end of the pole piece current collector 8 bypasses the third press roller 6 and is connected with the ultrathin solid pole piece winding roller 3.
The thickness of the first alkali metal strip 7 between the first alkali metal unreeling roller 1 and the first press roller 4 is A1, the thickness of the first alkali metal strip 7 which bypasses on the first press roller 4 is A2, the pole piece current collector 8 is attached to the first alkali metal unreeling roller 1 to form an ultrathin alkali metal strip, and the thickness of the ultrathin alkali metal strip is A3.
The winding device further comprises a second alkali metal unreeling roller 9 and a fourth pressing roller 10, wherein one end of a second alkali metal strip 11 is wound on the second alkali metal unreeling roller 9, the other end of the second alkali metal strip 11 bypasses the third pressing roller 6 to be connected with the ultrathin solid pole piece winding roller 3, and the fourth pressing roller 10 is arranged at the right end of the third pressing roller 6.
The thickness of the second alkali metal strip 11 between the second alkali metal unreeling roller 9 and the fourth press roller 10 is A1, the thickness of the second alkali metal unreeling roller 9 wound on the third press roller 6 is A4, and the second alkali metal unreeling roller 9 is arranged above the fourth press roller 10.
The dimension of A1 is 0.3mm, and the dimension of A2 is 10um. The size of A3 is 0.2um, and the size of A4 is 10um.
The first press roller 4, the second press roller 5, the third press roller 6 and the fourth press roller 10 are all heating rollers, and the heating temperature is 50-60 ℃.
The pressures among the first compression roller 4, the second compression roller 5, the third compression roller 6 and the fourth compression roller 10 are all 5-8T.
By pressing the alkali metal strip twice, compared with the traditional one-time pressing, the single stretching rate of the alkali metal is much lower, the rebound stress and the rolling force required during pressing can be effectively reduced, the thickness of the pressed alkali metal strip is more uniform, and the method is particularly effective in the thickness uniformity of pressing the wide alkali metal strip.
The solid-state battery pole piece is prepared by carrying out twice pressing and compounding on the alkali metal belt, so that the preparation efficiency and the qualification rate are higher compared with those of the traditional preparation method, the requirement on the thickness consistency of incoming materials is higher because the traditional preparation method is one-time pressing, when the width of the alkali metal belt is wider, the thickness after pressing is uneven, the rebound stress and the deformation can be fully released during the first pressing and compounding are carried out twice, and the thickness requirement is met during the second pressing, so that the requirement on the thickness consistency of the incoming materials of the alkali metal belt is lower, the method can be better adapted to the incoming materials with wide width, and the application range is wider.
The solid-state battery pole piece is formed by pressing and compounding the alkali metal belt twice in the preparation process, compared with the traditional one-time preparation, the force born by the pressing roller is much smaller, and a hydraulic servo control closed loop system with large transmission force and power is introduced, so that the alkali metal is rolled and compounded on the current collector, and the online real-time adjustment of the pressure and the roller gap can be realized, therefore, under the condition of the same roller size, the smaller the roller deformation is, the thinner and more uniform the thickness of the pressed alkali metal belt is. The capacity of the finished solid-state battery can be improved, and the economic benefit is improved.
As shown in fig. 1, the single-sided alkali metal and current collector composite includes: the first press roller 4, the second press roller 5 and the third press roller 6 which are sequentially arranged in parallel are used for rolling, after the first alkali metal strip 7 passes through the first alkali metal unreeling roller 1, the first alkali metal strip enters the space between the first press roller 4 and the second press roller 5 for rolling, the second rolling is performed between the first press roller 4 and the third press roller 6, when the second rolling is performed, the pole piece current collector 8 passes through the current collector unreeling roller 2, the pole piece current collector 8 enters the space between the first press roller 4 and the third press roller 6 for rolling, the first press roller 4 and the third press roller 6 roll the first alkali metal strip 7 and the pole piece current collector 8 into an ultrathin alkali metal strip, the ultrathin alkali metal strip passes through the ultrathin solid pole piece rolling roller 3 for rolling, and the single-sided alkali metal and current collector compounding (shown in fig. 3) process is completed.
As shown in fig. 2, the double sided alkali metal and current collector composite includes: the device comprises a first press roller 4, a second press roller 5, a third press roller 6 and a fourth press roller 10 which are sequentially arranged in parallel; after passing through the first alkali metal unreeling roller 1, the first alkali metal strip 7 firstly enters between the first press roller 4 and the second press roller 5 for one time of rolling, and enters between the first press roller 4 and the third press roller 6 for the second time of rolling; after passing through a second alkali metal unreeling roller 9, the second alkali metal strip 11 firstly enters a space between a third press roller 6 and a fourth press roller 10 for one time, and then enters a space between a first press roller 4 and the third press roller 6 for the second time, and after passing through the current collector unreeling roller 2, the pole piece current collector 8 enters a space between the first press roller 4 and the third press roller 6 for rolling, the first press roller 4 and the third press roller 6 roll the first alkali metal strip 7, the pole piece current collector 8 and the second alkali metal strip 10 into an ultrathin alkali metal strip, the pole piece current collector 8 is arranged between the first alkali metal strip 7 and the second alkali metal strip 10, the ultrathin alkali metal strip is wound through an ultrathin solid pole piece winding roller 3 to complete the process of compounding the double-sided alkali metal and the current collector, the rotating speed of the rolling movable roller is smaller than that of a rolling film-covered movable roller, the alkali metal strip forms a metal strip film under the extrusion between the press rollers, and the pole piece enters a metal strip under the action of centrifugal force and simultaneously between the rolling first press roller 4 and the third press roller 6, and the pole piece film is pressed into a double-coated metal strip layer under the action of the force, and the first metal strip 4 and the third press roller 4 is pressed into a double-coated layer (the double-metal strip layer is shown as the double-metal laminated press roller 4); the extrusion power is controlled by a high-precision hydraulic closed-loop system, and the precision reaches 0.2um; the production efficiency is high, the structure is compact, the occupied space is small, the cost is low, the performance is excellent, and the industrial application can be realized.
The foregoing description of the preferred embodiments of the present invention is not intended to be limiting, but rather, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and principles of the invention.

Claims (7)

1. The utility model provides a device of ultra-thin alkali metal strip of preparation, includes first alkali metal unreels running roller (1), roll-in mechanism, mass flow body unreels running roller (2) and ultra-thin solid pole piece wind-up roll (3), its characterized in that: the rolling mechanism comprises a first press roller (4), a second press roller (5) is arranged at the left end of the first press roller (4), a third press roller (6) is arranged at the right end of the first press roller, the first press roller (4), the second press roller (5) and the third press roller (6) are arranged side by side, the first alkali metal unreeling roller (1) and the ultrathin solid pole piece rolling roller (3) are arranged above the rolling mechanism, and the current collector unreeling roller (2) is arranged below the rolling mechanism;
the novel pole piece winding roller is characterized in that one end of a first alkali metal strip (7) is wound on the first alkali metal unwinding roller (1), the other end of the first alkali metal strip (7) bypasses the first compression roller (4) and is connected with the ultrathin solid pole piece winding roller (3), one end of a pole piece current collector (8) is wound on the current collector unwinding roller (2), and the other end of the pole piece current collector (8) bypasses the third compression roller (6) and is connected with the ultrathin solid pole piece winding roller (3).
2. An apparatus for producing ultra-thin alkali metal strip as defined in claim 1, wherein; the thickness of a first alkali metal strip (7) between the first alkali metal unreeling roller (1) and the first press roller (4) is A1, the thickness of the first alkali metal strip (7) which bypasses on the first press roller (4) is A2, the pole piece current collector (8) is attached to the first alkali metal unreeling roller (1) to form an ultrathin alkali metal strip, and the thickness of the ultrathin alkali metal strip is A3.
3. An apparatus for producing ultra-thin alkali metal strip as defined in claim 2, wherein; the winding device is characterized by further comprising a second alkali metal unreeling roller (9) and a fourth pressing roller (10), wherein one end of a second alkali metal strip (11) is wound on the second alkali metal unreeling roller (9), the other end of the second alkali metal strip (11) bypasses the third pressing roller (6) to be connected with the ultrathin solid pole piece winding roller (3), and the fourth pressing roller (10) is arranged at the right end of the third pressing roller (6).
4. An apparatus for producing ultra-thin alkali metal strip as claimed in claim 3, wherein; the thickness of a second alkali metal strip (11) between the second alkali metal unreeling roller (9) and the fourth press roller (10) is A1, the thickness of the second alkali metal unreeling roller (9) wound on the third press roller (6) is A4, and the second alkali metal unreeling roller (9) is arranged above the fourth press roller (10).
5. An apparatus for producing ultra-thin alkali metal strip as defined in claim 4, wherein; the dimension of A1 is 0.3mm, the dimension of A2 is 10um, the dimension of A3 is 0.2um, and the dimension of A4 is 10um.
6. An apparatus for producing ultra-thin alkali metal strip as defined in claim 4, wherein; the first press roller (4), the second press roller (5), the third press roller (6) and the fourth press roller (10) are all heating rollers, and the heating temperature is 50-60 ℃.
7. An apparatus for producing ultra-thin alkali metal strip as defined in claim 4, wherein; the pressures among the first compression roller (4), the second compression roller (5), the third compression roller (6) and the fourth compression roller (10) are all 5-8T.
CN202311031371.1A 2023-08-16 2023-08-16 Device for preparing ultrathin alkali metal strip Pending CN117000761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311031371.1A CN117000761A (en) 2023-08-16 2023-08-16 Device for preparing ultrathin alkali metal strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311031371.1A CN117000761A (en) 2023-08-16 2023-08-16 Device for preparing ultrathin alkali metal strip

Publications (1)

Publication Number Publication Date
CN117000761A true CN117000761A (en) 2023-11-07

Family

ID=88567202

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311031371.1A Pending CN117000761A (en) 2023-08-16 2023-08-16 Device for preparing ultrathin alkali metal strip

Country Status (1)

Country Link
CN (1) CN117000761A (en)

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