Electrolytic tank for electrolysis experiment

Abstract

The invention discloses an electrolytic bath for an electrolysis experiment, which comprises an electrolytic bath body, a first sliding rail, a second sliding rail and an electrode positioning block, two ends of the electrode positioning block are respectively in clearance fit with the first sliding rail and the second sliding rail, and the electrode positioning block is provided with an electrode slice placing groove and a shielding plate placing groove. Respectively inserting an electrode slice and a shielding plate; the heating module extends into the first sliding rail, and an opening groove is formed in the first sliding rail. The electrolytic cell is simple in structure and low in machining difficulty and use cost, the shielding plates are arranged on the outer sides of the electrode plates, current loss is reduced, and the current utilization rate is increased; the sliding rail module is used for guiding the movement of the electrode positioning block, so that the distance between the two electrode plates is accurately adjusted, and the experiment accuracy, the operation convenience and the experiment efficiency are improved; and through the air blowing holes in the air blowing channel and the through holes in the electrode positioning block and the first sliding rail, the liquidity of the electrolyte is improved, and the temperature uniformity and the reaction uniformity of the electrolyte are improved.

Description

Technical Field

[0001] The invention relates to the field of electrolytic cells, and in particular to an electrolytic cell used for electrolytic experiments. Background Art

[0002] Electrolytic copper foil is an important raw material for copper clad laminate (CCL), printed circuit board (PCB), and lithium-ion battery manufacturing. Its performance directly affects the stability and reliability of the end product. The performance of electrolytic copper foil mainly depends on the type and ratio of additives and electroplating process parameters. Therefore, in order to obtain the best type and ratio of additives and electroplating process parameters before mass trial production of copper foil, electrolysis experiments are often carried out in the laboratory. Then the best formula and process are transferred to the production line for trial production.

[0003] When conducting electrolysis experiments in the laboratory, the electrolytic cell is an indispensable device. The electrolytic cells currently used for electrolysis experiments have a series of defects: 1) The electrode sheets need to be clamped and positioned by the experimenter with the help of tools, resulting in the inability to stably control the spacing between the electrode sheets, affecting the reliability of the experimental results; 2) The existing electrolysis experiment scheme will cause partial current loss, and the current utilization rate is low; 3) The bottom heating form has a small contact surface between the electrolyte and the heating device, and the heating efficiency is low; 4) The existing temperature measurement zone design causes the measuring end of the temperature measuring instrument to contact the bottom surface of the electrolytic cell, and the measurement data is inaccurate. Therefore, in order to improve the accuracy, convenience and current utilization rate of electrolysis experiments, it is necessary to research and develop new electrolytic cells. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an electrolytic cell for electrolysis experiments, wherein a shielding plate is arranged on the outer sides of two electrode sheets to reduce current loss and improve current utilization; a sliding guide rail module is used to guide the movement of an electrode positioning block, the spacing between the two electrode sheets is adjusted, and a ruler is used to accurately position the spacing between the electrode sheets, thereby improving the accuracy of the experiment and avoiding the problems of low current utilization, inconvenient experimental operation and poor accuracy of the electrolytic cell in the prior art.

[0005] In order to solve the above technical problems, the present invention provides an electrolytic cell for electrolysis experiments, comprising: An electrolytic cell body, wherein the top of the electrolytic cell body is open; A sliding track module, the sliding track module comprising a first sliding track and a second sliding track arranged in parallel in the electrolytic cell body; Electrode positioning blocks, the number of the electrode positioning blocks is two, and the two are arranged in parallel, and the two ends of the electrode positioning blocks are respectively matched with the first sliding track and the second sliding track in a clearance, so as to guide the movement of the electrode positioning blocks; each of the electrode positioning blocks is provided with an electrode sheet placement groove and a shielding plate placement groove, the electrode sheet placement groove and the shielding plate placement groove are arranged parallel to the electrode positioning blocks, and the electrode sheet placement groove is located at the proximal end directly opposite to the two electrode positioning blocks; An electrode sheet, the electrode sheet being inserted into the electrode sheet placement groove; A shielding plate, the shielding plate being inserted into the shielding plate placement groove; A heating module passes through a fixed hole on the electrolytic cell body and extends into the first sliding track. A plurality of opening slots are arranged on the first sliding track. The fixed hole is connected to the internal cavity of the electrolytic cell body through the opening slots.

[0006] The present invention respectively arranges shielding plates on the outer sides of the two electrode sheets to reduce current loss and improve current utilization; the electrode sheet and the shielding plate are clamped and positioned by the electrode positioning block, the spacing between the electrode sheet and the shielding plate is fixed, and the movement of the electrode positioning block is guided by the sliding track module, so that the positions of the two electrode positioning blocks can be accurately adjusted, and then the spacing between the electrode sheets inserted in the two electrode positioning blocks can be adjusted, thereby improving the experimental accuracy, operation convenience and experimental efficiency.

[0007] Furthermore, the opening grooves on the first sliding track are distributed on the upper side, the lower side and the inner side of the first sliding track, so as to realize the contact and flow of the heating module and the electrolyte in three directions, thereby improving the heating efficiency. Placing the heating module in the first sliding track can avoid the conflict between the electrode positioning block and the position of the heating module when the electrode positioning block moves, and realize the free movement of the electrode positioning block in the electrode slot.

[0008] Furthermore, it also includes an air blowing channel located at the bottom of the electrolytic cell body, and a plurality of air blowing holes are arranged on the top of the air blowing channel. The electrolyte in the electrolytic cell body is blown through the air blowing holes to improve the fluidity of the electrolyte in the electrolytic cell, thereby achieving uniform heating of the electrolyte.

[0009] Furthermore, the air inlet end of the air inflation channel is connected to the air inlet hole located on the electrolytic cell body, and the air inlet hole is connected to the air inflation pump. A switchable plug is provided at the other end of the air inflation channel, which is closed during the experiment and opened at the end of the experiment to facilitate cleaning of the air inflation channel.

[0010] Furthermore, the electrode positioning block, the electrode sheet placement groove and the shielding plate placement groove are all U-shaped structures, and only the edge of the electrode sheet is inserted into the electrode positioning block, thereby increasing the contact area between the electrode sheet and the electrolyte.

[0011] Furthermore, the middle position of the bottom of the electrode sheet placement groove and the shielding plate placement groove is connected to the internal cavity of the electrolytic cell body, further increasing the contact area between the electrolyte and the electrode sheet, and supporting feet are set at both ends to support the electrode sheet or the shielding plate, and the supporting feet and the electrode positioning block are an integrated structure.

[0012] Furthermore, it also includes a thermometer fixing module, in which a fixing hole with a thick top and a thin bottom is arranged inside for inserting a thermometer. The measuring end of the thermometer is 1-2 cm away from the inner wall of the bottom of the electrolytic cell body to avoid direct contact between the measuring end of the thermometer and the bottom of the electrolytic cell body to affect the temperature measurement accuracy.

[0013] Furthermore, the shielding plate is a copper plate or an aluminum plate, which has excellent conductivity and processability, can be used to eliminate electromagnetic interference, and has good electromagnetic wave reflection capability, and is an ideal choice for electric field shielding.

[0014] Furthermore, a scale parallel to the first sliding track is provided on the outer wall of the electrolytic cell body, and the distance between the electrode sheets is judged by the scale when the electrode sheets move, thereby improving accuracy.

[0015] Furthermore, a plurality of through holes are arranged on the electrode positioning block and the first sliding track for the circulation of electrolyte, so that the electrolyte reaction in the electrolytic cell can be more uniform.

[0016] Furthermore, a through groove is provided on the second sliding rail, which can play a role in weight reduction and provide space for the longitudinal movement of the electrolyte.

[0017] Furthermore, the electrolytic cell body, the sliding track module and the electrode positioning block are all made of acrylic, which has good corrosion resistance and can extend the service life of the electrolytic cell. At the same time, it has a transparent feature, which is convenient for operators to observe the internal conditions.

[0018] Beneficial effects of the present invention: The electrolytic cell of the present invention has a simple structure, low processing difficulty and low use cost. Shielding plates are respectively arranged on the outer sides of two electrode sheets to reduce current loss and improve current utilization.

[0019] The present invention realizes the clamping and positioning of the electrode sheet and the shielding plate through the electrode positioning block. The spacing between the electrode sheet and the shielding plate is fixed, and the movement of the electrode positioning block is guided by the sliding track module. The positions of the two electrode positioning blocks can be accurately adjusted, and then the spacing between the electrode sheets inserted in the two electrode positioning blocks can be adjusted, thereby improving the experimental accuracy, operation convenience and experimental efficiency.

[0020] The present invention sets open grooves on the upper side, lower side and inner side of the first sliding track to achieve contact and flow between the heating module and the electrolyte in three directions, thereby improving the heating efficiency; at the same time, placing the heating module in the first sliding track can avoid conflict between the position of the electrode positioning block and the heating module when the electrode positioning block moves, thereby achieving free movement of the electrode positioning block in the electrode slot.

[0021] The present invention improves the fluidity of the electrolyte and further improves the temperature uniformity and reaction uniformity of the electrolyte through the air holes on the air blowing channel, the through grooves on the second sliding track, the electrode positioning block and the through holes on the first sliding track.

[0022] The present invention avoids contact between the temperature measuring area and the bottom of the electrolytic cell body through the design of the thermometer positioning module, thereby improving the accuracy of temperature measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic structural diagram of an electrolytic cell used for electrolysis experiments of the present invention; Figure 2 It is a schematic diagram of the first sliding track structure of the present invention; Figure 3 It is a schematic diagram of the structure of the electrode positioning block of the present invention; Figure 4 is a schematic diagram of the electric field line distribution; Explanation of the numbers in the figure: 1. electrolytic cell body, 11. fixing hole, 2. first sliding track, 21. opening slot, 3. second sliding track, 31. through slot, 4. electrode positioning block, 41. electrode sheet placement slot, 42. shielding plate placement slot, 43. supporting foot, 5. air hole, 6. air inlet, 7. thermometer fixing module, 8. through hole. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the specific embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Reference Figure 1-3As shown, this embodiment provides an electrolytic cell for electrolysis experiments, comprising: an electrolytic cell body 1, the electrolytic cell body 1 having an opening at the top, Figure 1 ; a sliding track module, the sliding track module comprising a first sliding track 2 and a second sliding track 3 arranged in parallel in the electrolytic cell body; an electrode positioning block 4, the number of the electrode positioning blocks 4 is two, and the two are arranged in parallel, and the two ends of the electrode positioning block 4 are respectively matched with the first sliding track 2 and the second sliding track 3 for guiding the movement of the electrode positioning block 4; each of the electrode positioning blocks 4 is provided with an electrode sheet placement groove 41 and a shielding plate placement groove 42, and the electrode sheet placement groove 41 and the shielding plate placement groove 42 are arranged parallel to the electrode positioning block 4, The electrode sheet placement slot 41 is located at the proximal end directly opposite the two electrode positioning blocks 4; an electrode sheet (not shown in the figure), the electrode sheet is inserted into the electrode sheet placement slot 41; a shielding plate (not shown in the figure), the shielding plate is inserted into the shielding plate placement slot 42; a heating module, the heating module passes through the fixed hole position 11 located on the electrolytic cell body 1 and extends into the first sliding track 2, a plurality of opening slots 21 are provided on the first sliding track 2, the fixed hole position 11 is connected to the internal cavity of the electrolytic cell body 1 through the opening slots 21, as shown in FIG. Figure 2 shown.

[0027] In this embodiment, shielding plates are respectively arranged on the outer sides of the two electrode sheets to reduce current loss and improve current utilization. The electrode sheet and the shielding plate are clamped and positioned by the electrode positioning block 4. The spacing between the electrode sheet and the shielding plate is fixed. The sliding track module is used to guide the movement of the electrode positioning block 4. The positions of the two electrode positioning blocks 4 can be accurately adjusted, and then the spacing between the electrode sheets inserted in the two electrode positioning blocks 4 can be adjusted, thereby improving the experimental accuracy, operation convenience and experimental efficiency.

[0028] As a preferred embodiment, the opening grooves 21 on the first sliding track 2 are distributed on the upper side, the lower side and the inner side of the first sliding track 2, so as to achieve contact and flow between the heating module and the electrolyte in three directions, thereby improving the heating efficiency. Placing the heating module in the first sliding track 2 can avoid the conflict between the electrode positioning block 4 and the position of the heating module when the electrode positioning block 4 moves, and achieve the free movement of the electrode positioning block 4 in the electrode slot.

[0029] As a preferred embodiment, it also includes an air inflation channel located at the bottom of the electrolytic cell body 1, and a plurality of air inflation holes 5 are arranged on the top of the air inflation channel. The electrolyte in the electrolytic cell body 1 is inflated through the air inflation holes 5 to improve the fluidity of the electrolyte in the electrolytic cell, thereby achieving uniform heating of the electrolyte; the air inlet end of the air inflation channel is connected to the air inlet hole 6 located on the electrolytic cell body 1, and the air inlet hole 6 is connected to the air inflation pump. A switchable plug is arranged at the other end of the air inflation channel, and the plug is closed during the experiment, and the plug is opened at the end of the experiment to facilitate the cleaning of the air inflation channel.

[0030] As a preferred embodiment, refer to Figure 1 and Figure 3 As shown, the electrode positioning block 4, the electrode sheet placement groove 41 and the shielding plate placement groove 42 are all U-shaped structures, and only the edge of the electrode sheet is inserted into the electrode positioning block 4 to increase the contact area between the electrode sheet and the electrolyte; the middle position of the bottom of the electrode sheet placement groove 41 and the shielding plate placement groove 42 is connected to the internal cavity of the electrolytic cell body 1 to further increase the contact area between the electrolyte and the electrode sheet, and support feet 43 are set at both ends for supporting the electrode sheet or the shielding plate, and the support feet 43 and the electrode positioning block 4 are an integral structure.

[0031] As a preferred embodiment, it also includes a thermometer fixing module 7, in which a fixing hole with a thick top and a thin bottom is arranged inside for inserting a thermometer. The measuring end of the thermometer is 1-2 cm away from the bottom inner wall of the electrolytic cell body 1 to avoid direct contact between the measuring end of the thermometer and the bottom of the electrolytic cell body 1 to affect the temperature measurement accuracy.

[0032] As a preferred embodiment, the shielding plate is a copper plate or an aluminum plate, which has excellent conductivity and processability, can be used to eliminate electromagnetic interference, and has good electromagnetic wave reflection ability, and is an ideal choice for electric field shielding. The electric field lines start from positive charges and end at negative charges. The distribution of electric field lines is diverse, and most of them are curves, such as Figure 4 As shown, when conducting an electrolysis experiment, the current loss on the back of the electrode will be more serious. This embodiment adds a metal shielding plate behind the electrodes at both ends. When the electric field encounters the metal plate, reflection enhancement will occur. The strength of the electric field determines the force on the charge, which in turn affects the magnitude of the current. The greater the electric field strength, the greater the current. This principle can be used to improve the efficiency of current use.

[0033] As a specific example, a roughening experiment was carried out on a 70μm copper foil. Under the experimental conditions of current 100A and time 40s, an aluminum plate was used as a shielding plate, and a condition without a shielding plate was set as a comparative example. The unit area mass of the copper foil before and after roughening is shown in Table 1. It can be seen that compared with not using a shielding plate, the average unit area weight gain after using an aluminum shielding plate is 7.5g, which greatly improves the roughening efficiency.

[0034] Table 1

[0035] As a preferred embodiment, a scale parallel to the first sliding track 2 is provided on the outer wall of the electrolytic cell body 1, and the distance between the electrode sheets is judged by the scale when the electrode sheets move, thereby improving accuracy.

[0036] As a preferred embodiment, a plurality of through holes 8 are arranged on the electrode positioning block 4 and the first sliding rail 2 for the circulation of electrolyte, so that the electrolyte reaction in the electrolytic cell can be more uniform; a through groove 31 is arranged on the second sliding rail 3, which can play a lightweight role and provide space for the longitudinal movement of the electrolyte.

[0037] As a preferred embodiment, the electrolytic cell body 1, the sliding rail module and the electrode positioning block 4 are all made of acrylic, which has good corrosion resistance and can extend the service life of the electrolytic cell. At the same time, it has a transparent feature, which is convenient for operators to observe the internal conditions.

[0038] In summary, the electrolytic cell of the present invention has a simple structure, low processing difficulty and low use cost. Shielding plates are respectively arranged on the outer sides of the two electrode sheets to reduce current loss and improve current utilization. The electrode sheet and the shielding plate are clamped and positioned by the electrode positioning block, the spacing between the electrode sheet and the shielding plate is fixed, and the sliding track module is used to guide the movement of the electrode positioning block, so that the positions of the two electrode positioning blocks can be accurately adjusted, and then the spacing of the electrode sheets inserted in the two electrode positioning blocks can be adjusted, thereby improving the experimental accuracy, operation convenience and experimental efficiency. Open grooves are arranged on the upper side, lower side and inner side of the first sliding track to achieve contact and flow of the heating module and the electrolyte in three directions, thereby improving the heating efficiency. At the same time, the heating module is placed in the first sliding track to avoid conflict between the electrode positioning block and the position of the heating module when the electrode positioning block moves, thereby realizing free movement of the electrode positioning block in the electrode tank. The air-blowing holes on the air-blowing channel and the through holes on the electrode positioning block and the first sliding track are used to improve the fluidity of the electrolyte, and further improve the temperature uniformity and reaction uniformity of the electrolyte. The design of the thermometer positioning module will avoid contact between the temperature measuring area and the bottom of the electrolytic cell body, thereby improving the accuracy of temperature measurement.

[0039] The present invention has been described in detail above in conjunction with specific implementations and exemplary examples, but these descriptions cannot be understood as limiting the present invention. Those skilled in the art understand that, without departing from the spirit and scope of the present invention, a variety of equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its implementation methods, all of which fall within the scope of the present invention. The scope of protection of the present invention shall be subject to the attached claims.

Claims

1. An electrolytic cell for electrolysis experiments, characterized in that: include: An electrolytic cell body, wherein the top of the electrolytic cell body is open; A sliding track module, the sliding track module comprising a first sliding track and a second sliding track arranged in parallel in the electrolytic cell body; Electrode positioning blocks, the number of the electrode positioning blocks is two, and the two are arranged in parallel, and the two ends of the electrode positioning blocks are respectively matched with the first sliding track and the second sliding track in a clearance, so as to guide the movement of the electrode positioning blocks; each of the electrode positioning blocks is provided with an electrode sheet placement groove and a shielding plate placement groove, the electrode sheet placement groove and the shielding plate placement groove are arranged parallel to the electrode positioning blocks, and the electrode sheet placement groove is located at the proximal end directly opposite to the two electrode positioning blocks; An electrode sheet, the electrode sheet being inserted into the electrode sheet placement groove; A shielding plate, the shielding plate being inserted into the shielding plate placement groove; A heating module passes through a fixed hole on the electrolytic cell body and extends into the first sliding track. A plurality of opening slots are arranged on the first sliding track. The fixed hole is connected to the internal cavity of the electrolytic cell body through the opening slots.

2. The electrolytic cell for electrolysis experiment according to claim 1, characterized in that: It also includes an air blowing channel located at the bottom of the electrolytic cell body, and a plurality of air blowing holes are arranged on the top of the air blowing channel.

3. The electrolytic cell for electrolysis experiment according to claim 2, characterized in that: The air inlet end of the air inflation channel is connected to the air inlet hole located on the electrolytic cell body, and the air inlet hole is connected to the air inflation pump. A switchable plug is provided at the other end of the air inflation channel.

4. The electrolytic cell for electrolysis experiment according to claim 1, characterized in that: The electrode positioning block, the electrode sheet placement groove and the shielding plate placement groove are all U-shaped structures.

5. The electrolytic cell for electrolysis experiment according to claim 4, characterized in that: The middle position of the bottom of the electrode sheet placement groove and the shielding plate placement groove is connected to the internal cavity of the electrolytic cell body, and support feet are set at both ends for supporting the electrode sheet or the shielding plate. The support feet and the electrode positioning block are an integrated structure.

6. The electrolytic cell for electrolysis experiment according to claim 1, characterized in that: It also includes a thermometer fixing module, in which a fixing hole with a thick top and a thin bottom is arranged for inserting a thermometer, and a measuring end of the thermometer is 1-2 cm away from the bottom inner wall of the electrolytic cell body.

7. The electrolytic cell for electrolysis experiment according to claim 1, characterized in that: The shielding plate is a copper plate or an aluminum plate.

8. The electrolytic cell for electrolysis experiment according to claim 1, characterized in that: The outer wall of the electrolytic cell body is provided with a scale parallel to the first sliding track.

9. The electrolytic cell for electrolysis experiment according to claim 1, characterized in that: A plurality of through holes are arranged on the electrode positioning block and the first sliding track for the circulation of electrolyte.

10. The electrolytic cell for electrolysis experiment according to claim 1, characterized in that: A through groove is arranged on the second sliding rail.

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