CN105256331B - A kind of electrolysis unit using magneto-electric coupled control oxygen bubbles motion - Google Patents
A kind of electrolysis unit using magneto-electric coupled control oxygen bubbles motion Download PDFInfo
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- CN105256331B CN105256331B CN201510752333.4A CN201510752333A CN105256331B CN 105256331 B CN105256331 B CN 105256331B CN 201510752333 A CN201510752333 A CN 201510752333A CN 105256331 B CN105256331 B CN 105256331B
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Abstract
The present invention relates to a kind of electrolysis unit using magneto-electric coupled control oxygen bubbles motion, belong to energy storage, metal deposit electrolysis, purification and electrosynthesis glyoxal electrochemical technology field, the device includes electrolytic cell, a pair of electrodes is installed in two opposite side relative positions of electrolytic cell, electrolyte is housed in electrolytic cell, one block of magnet that the outer surface and male or female opposite position for being additionally included in electrolytic cell are close to, for making in electrolytic process oxygen bubbles along anode surface displacement.The present apparatus not only solves oxygen bubbles and gathers problem, moreover it is possible to promote bath composition, temperature more uniform, contains dendritic growth, improves metal deposit surface quality and saves energy；In addition, can also promote electrolyte displacement.The invention can be widely applied to the fields such as rechargeable metal-air battery, fuel cell regeneration, water electrolysis, metal electrodeposition, electrorefining and electrosynthesis glyoxal, it may also be used for object orientation mobile field.
Description
Technical field
The invention belongs to energy storage, metal deposit electrolysis, purification and electrosynthesis glyoxal electrochemical technology field, more particularly to use
The magneto-electric coupled device for controlling oxygen bubbles to move during oxygen evolution reaction.
Background technology
Oxygen evolution reaction is that occur the electrochemical reaction in electrode-electric solution liquid two-phase interface,
The dynamic property of oxygen evolution reaction is not only relevant with the activity of catalyst, also quickly removes and is closely related with the bubble of electrode surface.
Under pure current field condition, general oxygen evolution reaction device is made up of rectangle electrolytic cell 1, anode 3, negative electrode 4, electrolyte 2, such as Fig. 1
It is shown, wherein, the inside dimension of rectangle electrolytic cell 1 be 250mm × 500mm × 70mm, 50mm × 50mm nickel screens as anode 3,
Mesh size 3mm × 2mm, 50mm × 50mm stainless steel plates are as negative electrode 4, and electrolyte 2 is by 7mol/L KOH solutions and dissolved
Saturation ZnO is constituted.In the near surface of anode 3 oxygen evolution reaction, the oxygen that the electrolyte near anode contains occur for electrochemical reaction
Gas concentration reaches saturation state, and oxygen bubbles 5 occurs and perpendicular to the surface of anode 3 to external diffusion.If oxygen bubbles motion is hindered,
Anode surface is may build up, and then hinders follow-up electrochemical reaction, increase energy consumption even damages relevant device.Therefore, soon
The oxygen bubbles of speed removal electrode surface is normally carried out most important for oxygen evolution reaction.
Either object of which movement derives from object self-deformation, or promoted from object external force.It is real by self-deformation
Now movement is common in living nature elongate strip structure species such as earthworm, flagellate.Object of which movement is by external force as a rule
Realization is moved, such as electric field force, magnetic field force and light radiation, and object of which movement mainly passes through diffusion, convection current, three kinds of migration in a liquid
Mode is controlled, wherein, uneven concentration causes liquid component diffusion motion, and flow dynamics cause liquid convection, suffered by liquid
External force cause liquid to migrate.
It is hindered to solve oxygen bubbles motion in Electrochemical oxygen evolution reaction, and then hinder asking for follow-up electrochemical reaction
Topic, a kind of existing bubble driving conductor motion produced based on electrochemical reaction, i.e., the electrolysis constituted in a pair of parallel electrode
In groove, there is polarization for conductor therein, occur analysis oxygen and evolving hydrogen reaction in the conductor both sides relative to electrode, according to change
Learn reaction equation and understand that the amounts of hydrogen of production is twice of amount of oxygen, so as to cause conductor linearly to move or rotate.One kind is by outer
The motion of water surface semiconductor-on-insulator diode is suspended in alternating electric field control, grade diode pair voltage commutation causes neighbouring
Particle electrokinetic flow, so as to drive diode to move.However, conductor and electrochemical reaction are the premises of this system object of which movement；
And speed of moving body is slow, it is only suitable for being applied to micromachine.
It is another that the oxygen bubbles that oxygen evolution reaction discharges is taken away by electrolyte flow, mainly taken in time by electrolyte flow rate
Take away the oxygen bubbles of generation, it is to avoid oxygen bubbles gathers in electrode surface, it is ensured that electrode is fully contacted with electrolyte.This technology is needed
A set of electrolyte drive system is wanted, and additionally increases energy expenditure.
Also one kind increases electrode surface roughness, such bubble is in electrode table by changing electrode surface microscopic appearance
The contact angle in face diminishes, and easily departs from bubble.This scheme is to improve the ability that bubble automatically disengages electrode surface, but not
The situation of oxygen evolution reaction occurs suitable for electrode lower surface.
To sum up, current prior art mainly controls bubble motion using extrinsic motive, and this method effect substantially, but can increase
Addition sheet.Electrode surface structures optimization method influences very small to bubble motion, it is impossible to changes bubble motion, and is limited to parts
Structure and placement location.
The content of the invention
The purpose of the present invention be for solve oxygen evolution reaction during electrode surface oxygen bubbles sticking problem, it is proposed that one kind is adopted
With it is magneto-electric coupled control oxygen bubbles move electrolysis unit, not only solve oxygen bubbles and gather problem, moreover it is possible to promote electrolyte into
Point, temperature it is more uniform, contain dendritic growth, improve metal deposit surface quality and save energy；In addition, can also promote electrolysis
Liquid displacement.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of electrolysis unit using magneto-electric coupled control oxygen bubbles motion, it is characterised in that the device includes electrolytic cell,
Electrolyte is housed in two opposite side relative positions of electrolytic cell install a pair of electrodes, electrolytic cell, the appearance of electrolytic cell is additionally included in
One block of magnet that face is close to male or female opposite position, for making oxygen bubbles in electrolytic process be oriented along anode surface
It is mobile.
The present invention can promote liquid displacement, available for micromachine even medical health field.
The features of the present invention and beneficial effect：
The present invention has the fortune of oxygen bubbles under pure electric field and magneto-electric coupled field, different magnetic poles, different electrolysis units by contrast
Dynamic form, obtains oxygen bubbles and move under magnetic electric field environment to change, the device of oxygen bubbles motion can be controlled by designing.
Contribute to oxygen bubbles to depart from electrode surface using the present apparatus in electrolysis process, promote bath composition, temperature more
Plus it is uniform, contain dendritic growth, so as to improve metal deposit surface quality and save energy.
Apparatus of the present invention can be widely applied to rechargeable metal-air using the control oxygen bubbles motion of magneto-electric coupled method
The fields such as battery, fuel cell regeneration, water electrolysis, metal electrodeposition, electrorefining and electrosynthesis glyoxal.In addition, the present invention may be used also
Use and promote liquid or object to make the regular field moved along a direction.
Brief description of the drawings
Fig. 1 is general oxygen evolution reaction apparatus structure and oxygen bubbles moves signal perpendicular to anode surface under pure current field condition
Figure.
Fig. 2 is a kind of embodiment device schematic diagram of the invention.Oxygen bubbles when magnet S pole-faces are to anode in this embodiment
Along anode surface parallel motion.
Fig. 3 is another embodiment device schematic diagram of the invention.Oxygen when magnet S pole-faces are to anode in this embodiment
Steep clockwise rotation.
Embodiment
Describe embodiments of the present invention in detail with reference to the accompanying drawings and examples.
A kind of electrolysis unit embodiment one using magneto-electric coupled control oxygen bubbles motion proposed by the present invention, such as Fig. 2 institutes
Show
The present embodiment device includes the rectangular electrolytic cells 11 of 250mm × 500mm × 70mm, in two long side phases of electrolytic cell
A pair of electrodes is installed to position, its Anodic 13 uses 50mm × 50mm nickel screens, negative electrode 14 uses 50mm × 50mm stainless steel plates,
Electrolyte 12 is housed in electrolytic cell, is by 7mol/L KOH solutions and dissolves saturation ZnO and constitute, the appearance of electrolytic cell is additionally included in
The square ndfeb magnets 16 of one piece of 50mm × 50mm are close in face with the opposite position of anode 13, as shown in Figure 2.
The present embodiment is in electrolytic process is carried out, and oxygen bubbles 15 (with being not provided with during magnet 6) direction of motion changes
Become, oxygen bubbles is not perpendicular to the diffusion into the surface campaign of anode 13, but is moved along the surface orientation of anode 13.Oxygen bubbles 15 is moved
Direction depends on the magnetic pole of magnet 16, when one piece of magnet 16S pole-face is to anode, the Motion Parallel of oxygen bubbles 15 in the surface of anode 13 to the right
It is mobile, as shown in Figure 2；When one piece of magnet 16N pole-face is to anode, oxygen bubbles 15 is moved to the left along the surface of anode 13.In addition, this
Embodiment can also abut magnet 16 outer surface and the opposite position of negative electrode 14 for being attached to electrolytic cell, now when magnet 16S poles
Towards negative electrode 14, oxygen bubbles 15 is moved to the left along the surface of anode 13, and works as one piece of magnet 16N pole-face to negative electrode 14, oxygen bubbles
15 move right along the surface of anode 13；The present embodiment may additionally include anode 13, the electrolytic cell both sides of the relative position of negative electrode 14
Respectively one block of magnet of absorption, and the magnetic pole opposite sex, can obtain the motion reinforcement of oxygen bubbles 15；When the magnetic pole same sex of both sides, oxygen bubbles 15
Hypomotility.
Oxygen bubbles 15 moves the strong and weak magnetic induction intensity also to electric-field intensity, magnetic field and is directly proportional, and charging voltage is higher, electric field
Intensity is stronger, the oxygen bubbles more than 15 that anode 13 is generated, and the motion of oxygen bubbles 15 is strengthened；When the enhancing of magnetic field magnetic induction intensity, oxygen
Steep the quickening of 15 movement velocitys.In addition, the motion of oxygen bubbles 15 is inversely proportional with electrolyte temperature, when electrolyte temperature rise, ion cloth
Bright motion aggravation, the rise of irregular movement ratio.
Embodiment two
The present embodiment device includes the square electrolytic cells 21 of 70mm × 70mm × 70mm, in the relative position of two opposite side of electrolytic cell
Installation a pair of electrodes is put, its Anodic 23 uses 50mm × 50mm nickel screens, negative electrode 24 uses 50mm × 50mm stainless steel plates, electrolysis
It is by 7mol/L KOH solutions equipped with electrolyte 22 in groove and dissolves saturation ZnO and constitute, in addition to is located at the outer surface of electrolytic cell
The square ndfeb magnets 26 of 50mm × 50mm, the magnet 26 is close to the relevant position of anode 23, as shown in Figure 3.
The present embodiment is in electrolytic process is carried out, and the motion of oxygen bubbles 25 forms vortex.When magnet 26S pole-faces are to anode 23
When, oxygen bubbles 25 turns clockwise, as shown in Figure 3；If magnet 26N pole-faces are to anode 23, the then rotation counterclockwise of oxygen bubbles 25
Turn.The rotary motion of oxygen bubbles 25 can then cause the formation vortex of electrolyte 22, and the present embodiment device contributes to oxygen bubbles 25 to depart from sun
The surface of pole 23, bath composition, temperature are uniform, contain dendritic growth, so as to improve metal deposit surface quality and save the energy.
Configuration as described herein is exemplary, and these specific examples of implementing are not construed as having limitation meaning
Justice, the present invention is magneto-electric coupled also to have an impact to hydrogen motion in addition to oxygen bubbles locomotive regulation.For example, above-mentioned technology can be answered
For the neck such as rechargeable metal-air battery, fuel cell regeneration, water electrolysis, metal electrodeposition, electrorefining and electrosynthesis glyoxal
Domain.Therefore, the present invention includes the combination of various system and method on the books and non-obvious disclosed herein, and
Further feature, function, and/or the characteristic disclosed here.
Claims (4)
1. a kind of electrolysis unit using magneto-electric coupled control oxygen bubbles motion, it is characterised in that the device includes electrolytic cell,
Two opposite side relative positions of electrolytic cell, which are installed, is equipped with electrolyte in a pair of electrodes, electrolytic cell, be additionally included in the outer surface of electrolytic cell
One block of magnet being close to male or female opposite position, for making oxygen bubbles in electrolytic process orient shifting along anode surface
Dynamic, the described magnet uses square ndfeb magnet；The electrolytic cell is square, and vortex is formed for moving oxygen bubbles.
2. electrolysis unit as claimed in claim 1, it is characterised in that adjust the electric-field intensity, magnetic field intensity, electrolyte of the device
Temperature, for adjusting oxygen bubbles generating rate and exercise intensity.
3. electrolysis unit as claimed in claim 1 or 2, it is characterised in that the anode uses nickel screen, negative electrode uses stainless steel plate
Electrolyte is by KOH solution and dissolves saturation ZnO and constitute.
4. electrolysis unit as claimed in claim 1 or 2, it is characterised in that the device is used for rechargeable metal-air battery, combustion
Expect battery recycling, water electrolysis, metal electrodeposition, electrorefining and electrosynthesis glyoxal field, or for object orientation mobile field.
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| CN105648515A (en) * | 2016-03-22 | 2016-06-08 | 扬州大学 | Anode aluminum foil forming device |
| CN106048645B (en) * | 2016-07-14 | 2018-05-01 | 重庆大学 | A kind of method that oxyhydrogen machine electric energy efficiency is improved by externally-applied magnetic field |
| CN106207317A (en) * | 2016-09-21 | 2016-12-07 | 北京机械设备研究所 | A kind of metal air fuel cell based on magnetic control stream |
| CN106602154B (en) * | 2016-12-09 | 2019-03-22 | 北京航空航天大学 | A kind of method driving bubble motion and the method for reducing self-discharge of battery |
| CN110274508B (en) * | 2019-06-13 | 2024-05-17 | 华南师范大学 | Active enhanced heat transfer device and active enhanced heat transfer method |
| EP3798334A1 (en) | 2019-09-25 | 2021-03-31 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | A process for enhancing the catalytic efficiency of oer |
| CN110904470B (en) * | 2019-11-22 | 2022-05-31 | 西北矿冶研究院 | Electrolysis device |
| CN112481659B (en) * | 2020-11-26 | 2022-03-08 | 江西理工大学 | Device and method for strengthening electrolyte movement in electrolytic cell in non-contact manner |
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