CN109655506A - Electrochemical performance testing device - Google Patents
Electrochemical performance testing device Download PDFInfo
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- CN109655506A CN109655506A CN201710940922.4A CN201710940922A CN109655506A CN 109655506 A CN109655506 A CN 109655506A CN 201710940922 A CN201710940922 A CN 201710940922A CN 109655506 A CN109655506 A CN 109655506A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
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Abstract
The utility model relates to an electrochemistry performance testing arrangement, including electrochemical system, actuating system, visual system and control system, wherein, electrochemical system includes electrolyte bath, first electrode, second electrode and electrochemistry workstation, the electrolyte bath is used for holding electrolyte, the one end of first electrode soak in the electrolyte bath, and with the granule contact that awaits measuring, the other end with electrochemistry workstation electricity is connected, the one end of second electrode soak in the electrolyte bath, the other end with electrochemistry workstation electricity is connected, actuating system with first electrode is connected, in order to drive first electrode with the granule contact that awaits measuring, visual system is used for observing the granule that awaits measuring, control system with electrochemical system actuating system and visual system electricity is connected. The testing device can realize the testing of the single particles of the active material, thereby improving the accuracy of the electrochemical performance testing of the active material.
Description
Technical field
This application involves electrochemical property test technical field more particularly to a kind of electrochemical property test devices.
Background technique
With new energy industrial expansion, consumer is in the safety of battery (such as lithium battery), cost, service life, energy
The many aspects such as density and power density are put forward new requirements, for example, to the energy density of Prospect of EVS Powered with Batteries
Requirement it is also higher and higher, therefore, select satisfactory new electrode materials particularly important.Currently, a variety of new electrode activities
Material is attract attention, for example, the LiFePO with high security4、LiMgxFe1-xPO4Polyanions such as (0 < x < 1)
The LiNi of type positive electrode, high voltage0.5Mn1.5O4Positive electrode, the lithium-rich manganese-based anode material of height ratio capacity, Si base cathode material
Material, Sn base negative electrode material etc..
In the related technology, the mode of button electrical testing is generallyd use to evaluate the chemical property of battery active material, is being detained
Before electrical testing, generally active material is mixed according to a certain percentage with conductive agent, binder, a certain amount of solvent is then added,
It is tuned into slurry, and combination electrode is made in slurry coating on a current collector, button cell is subsequently assembled into, carries out electrochemistry
The test of energy.
In above-mentioned electrochemical property test, some side reactions may occur during the test for binder and conductive agent,
For example, binder degradation, electrolyte decomposition etc., above-mentioned side reaction will affect the reliability of electrochemical property test, it cannot be accurate
Obtain the intrinsic properties of material.In addition, combination electrode is substantially porous electrode, there are sizes to be unevenly distributed, reactant and
The defects of production concentration is unevenly distributed, potential and current density are unevenly distributed, these defects can all influence measurement result
Accuracy.
It is currently, there are individual particle testing scheme, which is not necessarily to mix active material and conductive agent, binder etc.
Combination electrode is made, thus, there is no above-mentioned side reactions, and the test result of the intrinsic properties of material is relatively accurate, this is just
It needs to develop a kind of new test device, matches individual particle testing scheme.
Summary of the invention
This application provides a kind of electrochemical property test devices, can be realized the test of the individual particle of active material, from
And improve the accuracy of the electrochemical property test of active material.
This application provides a kind of electrochemical property test devices, comprising:
Electro-chemical systems；
Drive system；
Visualization system；And
Control system,
Wherein, the electro-chemical systems include electrolysis liquid pool, first electrode, second electrode and electrochemical workstation, institute
Electrolysis liquid pool is stated for holding electrolyte, one end of the first electrode is dipped in the electrolysis liquid pool, and is connect with candidate particles
Touching, the other end are electrically connected with the electrochemical workstation, and one end of the second electrode is dipped in the electrolysis liquid pool, the other end
It is electrically connected with the electrochemical workstation,
The drive system is connect with the first electrode, to drive the first electrode to contact with the candidate particles,
The visualization system is used to observe the candidate particles,
The control system is electrically connected with the electro-chemical systems, the drive system and the visualization system.
Optionally, the electrolysis liquid pool includes the pedestal and Chi Benti being connected, and the pond ontology includes accommodating chamber, electrolysis
Liquid is contained in the accommodating chamber.
Optionally, through-hole is offered on the pond ontology, the pedestal is sealedly attached to one end of the through-hole, to be formed
The accommodating chamber.
Optionally, the pedestal includes base body and the candidate particles carrying tablet for being supported in the base body,
The candidate particles carrying tablet is transparent material, and for placing the candidate particles, the candidate particles carrying
Piece is sealingly engaged in the through hole and the pond ontology,
The base body is arranged to, and extraneous light can be projeced into the candidate particles carrying tablet.
Optionally, loophole is offered on the base body, the loophole face is placed in the candidate particles and holds
The candidate particles on slide glass.
Optionally, the inner wall of the accommodating chamber is hierarchic structure, and the second electrode is set to the rank of the hierarchic structure
On tread.
Optionally, the electrolysis liquid pool further includes first support bar, and the pond is fixed in one end of the first support bar
Ontology, the other end are contacted with the second electrode, with the fixation second electrode.
Optionally, the electro-chemical systems further include electrode holder, and the drive system is via the electrode holder and institute
First electrode connection is stated, the electrode holder has multiple for installing the installation site of the first electrode.
Optionally, the electrode holder includes the first part being connected and second part, the first part with it is described
Drive system connection,
The first part connect to form holding chamber with the second part, and the second electrode is clamped and fastened on the folder
Hold intracavitary, at least one described installed position is provided with the holding chamber.
Optionally, the visualization system includes microscope, and the candidate particles pass through the microscopic.
Optionally, the visualization system further includes light source, and the light source provides illumination for the imaging of the candidate particles.
Optionally, further include vibration isolation table, other components of the vibration isolation table are removed in the electrochemical property test device
It is all set in the vibration isolation table.
It optionally, further include shielded box, the shielded box is set in the vibration isolation table, the electrochemical property test dress
The other components for setting the removing vibration isolation table and the electrochemical workstation are covered in the shielded box.
Optionally, the drive system is connect with the visualization system, to drive the visualization system relatively described
Candidate particles are mobile.
Technical solution provided by the present application can achieve it is following the utility model has the advantages that
This application provides a kind of electrochemical property test devices, wherein first electrode and second electrode are infiltrated on electricity
It solves in liquid, and forms connection candidate particles and conduct circuit, be under energized state when conducting circuit, electrochemical workstation
The chemical property of candidate particles can be measured, which carries out chemical property to the particle of active material
Test obtains measurement result, drive system, visualization system and control system mention test process during the test
For auxiliary, to improve the degree of automation of measurement process, and then the accuracy of test result is improved.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Application.
Detailed description of the invention
Fig. 1 is the schematic diagram of electrochemical property test device provided by the embodiments of the present application；
Fig. 2 is the cross-sectional view of electrolysis liquid pool provided by the embodiments of the present application；
Fig. 3 is the cross-sectional view of Chi Benti in electrolysis liquid pool provided by the embodiments of the present application；
Fig. 4 is the top view of Chi Benti in electrolysis liquid pool provided by the embodiments of the present application；
Fig. 5 is the cross-sectional view of base body in electrolysis liquid pool provided by the embodiments of the present application；
Fig. 6 is the top view of base body in electrolysis liquid pool provided by the embodiments of the present application；
Fig. 7 is the cross-sectional view of electrode holder in electrochemical property test device provided by the embodiments of the present application；
Fig. 8 is the particle (LiCoO using electrochemical property test device provided by the present application to active material2) carry out electricity
Chemical property tests the curve graph of resulting charge and discharge.
Appended drawing reference:
1- electrochemical property test device；
102- electro-chemical systems；
1022- is electrolysed liquid pool；
1022a- pedestal；
1022aa- base body；
1022aaa- loophole；
1022ab- candidate particles carrying tablet；
The pond 1022b- ontology；
1022ba- accommodating chamber；
1022c- gasket；
1022d- first support bar；
1022e- supporting body；
1024- first electrode；
1026- second electrode；
1028- electrochemical workstation；
1030- electrode holder；
The first fixed part of 1030a-；
The first groove of 1030aa-；
1030ab- second support bar；
1030ac- fixing piece；
The second fixed part of 1030b-；
The second groove of 1030ba-；
104- drive system；
106- visualization system；
106a- microscope；
106b- light source；
108- control system；
110- vibration isolation table；
112- shielded box.
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and together with specification it is used to explain the principle of the application.
Specific embodiment
The application is described in further detail below by specific embodiment and in conjunction with attached drawing.
As shown in Figure 1, the test device can be to active material this application provides a kind of electrochemical property test device 1
The particle of material carries out the test of chemical property, to reinforce to the intrinsic properties of active material and kinetic parameter etc.
The understanding of performance, and measurement result is more accurate compared to existing way.
Specifically, the electrochemical property test device 1 includes electro-chemical systems 102, drive system 104, visualization system
106 and control system 108.Wherein, electro-chemical systems 102 include electrolysis liquid pool 1022, first electrode 1024, second electrode
1026 (referring to Fig. 2) and electrochemical workstation 1028.
Electrolysis liquid pool 1022 is the electrification for measuring the particle of active material for holding electrolyte, electrochemical workstation 1028
The equipment for learning performance, electrochemical workstation 1028 have multiple interfaces, multiple interfaces can respectively with first electrode 1024 and second
Electrode 1026 is electrically connected, and conducts circuit to be formed during the test.
One end of first electrode 1024 is dipped in electrolysis liquid pool 1022, and is connect with the candidate particles being infiltrated in electrolyte
Touching, the other end are then electrically connected with electrochemical workstation 1028, and one end of second electrode 1026 is dipped in electrolysis liquid pool 1022, another
End is electrically connected with electrochemical workstation 1028.
It should be noted that the polarity of first electrode 1024 and second electrode 1026 is on the contrary, when candidate particles are that anode is living
Property material when, first electrode 1024 be used as positive electrode, second electrode 1026 be used as negative electrode；Conversely, when candidate particles be for
When the active material of cathode, first electrode 1024 is used as negative electrode, and second electrode 1026 is used as positive electrode.
Drive system 104 can output driving power, connect with first electrode 1024, with drive first electrode 1024 transport
Dynamic, in the process of movement, first electrode 1024 can be contacted with candidate particles, and drive system 104 can use manipulator,
With multiple freedom degrees, flexible movements.
106 one side of visualization system, on the other hand can also be with for observing the imaging of candidate particles during the test
Before testing observation first electrode 1024 whether with candidate particles reliable contacts, to guarantee the validity of test result and reliable
Property.
Control system 108 is electrically connected with electro-chemical systems 102, drive system 104 and visualization system 106, to each
System carries out process control, completes entire test process.
According to above description, electrochemical property test device 1 provided by the present application is carried out using to active material particle
The mode of electrochemical property test, during the test, first electrode 1024 and second electrode 1026 are infiltrated on electrolyte
It is interior, and form connection candidate particles and conduct circuit, when conducting circuit is under energized state, electrochemical workstation 1028 can
It is measured with the chemical property to candidate particles, obtains measurement result, drive system 104, visualization system 106 and control
System 108 processed provides auxiliary to test process, to improve the degree of automation of measurement process, and then improves the standard of test result
Exactness.
It is known that electrolysis liquid pool 1022 is for holding electrolyte in aforementioned, the structure of electrolysis liquid pool 1022 can be according to reality
The environmental selection of application is arranged, and as shown in Figures 2 to 6, electrolysis liquid pool 1022 includes the pedestal 1022a and Chi Benti being connected
1022b two parts, wherein pedestal 1022a is supported in the lower section of pond ontology 1022b, and groove, Chi Benti is arranged in pedestal 1022a
The modes such as 1022b is installed in groove, and pedestal 1022a and pond ontology 1022b can be connected by screw bolts, be clamped are fixedly connected.
During the test, pedestal 1022a and pond ontology 1022b is kept relatively fixed, and Chi Benti 1022b includes for holding electrolyte
Accommodating chamber 1022ba.
As shown in Figure 2, electrolysis liquid pool 1022 is split type structure comprising two parts, the electrolysis liquid pool of separate structure
Complicated structure is divided into two parts simple structure by 1022, on the one hand can improve processing technology, reduces difficulty of processing；It is another
Aspect, one of pedestal 1022a and pond ontology 1022b damage when, can only in the two damage one of carry out replacement and
Maintenance reduces maintenance cost.
Certainly, in some other embodiment, electrolysis liquid pool 1022 can also be processed into integral structure, for example, to pour
The mode of casting or injection molding is integrally formed.
Please continue to refer to Fig. 2 to Fig. 4, through-hole is offered on Chi Benti 1022b, which is through to pedestal 1022a, pedestal
1022a is sealedly attached to one end of through-hole, to form accommodating chamber 1022ba.That is, accommodating chamber 1022ba is provided with pond sheet
On body 1022b, accommodating chamber 1022ba is sealed by pedestal 1022a, and the two combination makes it have the function of holding electrolyte.This side
In case, through-hole is processed on the ontology 1022b of pond and is more easier compared to processing blind hole, processing technology is improved.
Further, in order to avoid electrolyte is oozed out from the connecting part of pedestal 1022a and pond ontology 1022b, between the two
Gasket 1022c can also be set, to improve leakproofness between the two, avoid electrolyte leakage pollution environment.
Preferably, as shown in Figure 5 and Figure 6, pedestal 1022a is arranged to two parts for the ease of the observation to candidate particles,
A part be base body 1022aa, another part be candidate particles carrying tablet 1022ab, base body 1022aa be supported in
The lower section of particle bearing piece 1022ab is surveyed, at this point, it is to be measured that pedestal 1022a and pond ontology 1022b, which is sealingly engaged more precisely,
Grain carrying tablet 1022ab and pond ontology 1022b is sealingly engaged.
Candidate particles carrying tablet 1022ab is arranged to transparent material, and when test, candidate particles are placed on candidate particles carrying
On piece 1022ab, at this point, base body 1022aa also needs to be arranged to, extraneous light is allowed to project candidate particles carrying tablet
On 1022ab, candidate particles and candidate particles carrying tablet 1022ab are capable of forming color difference as a result, in order to obtain candidate particles
Clear image.
In a kind of embodiment, base body 1022aa is also provided with into transparent material, and light is thrown across base body 1022aa
It is mapped on candidate particles carrying tablet 1022ab；Another embodiment, as shown in Fig. 2, offering light transmission on base body 1022aa
Hole 1022aaa, loophole 1022aaa face candidate particles.In this way, light can be penetrated by loophole 1022aaa come, and
It projects on candidate particles carrying tablet 1022ab, two kinds of embodiments are compared, and the translucency of the latter is more preferable, and base body 1022aa
Material it is without limitations.
Under normal conditions, since the specific gravity of candidate particles is greater than the specific gravity of electrolyte, the candidate particles into electrolyte are logical
It is often sunken to the bottom of electrolysis liquid pool 1022, therefore, candidate particles can be supported by candidate particles carrying tablet 1022ab, and with the
The contact of one electrode 1024.
Referring to FIG. 2, electrolysis liquid pool 1022 further includes supporting body 1022e, supporting body 1022e and candidate particles carrying tablet
1022ab is stacked, and supporting body 1022e is provided with through-hole, which is connected to loophole 1022aaa, and supporting body 1022e can be held
Part fastening force when load pedestal 1022a is connected with pond ontology 1022b reduces candidate particles carrying tablet 1022ab in fastening force
Act on the risk of lower fragmentation.Supporting body 1022e can select the elastic material etc. that active force can be absorbed.
For second electrode 1026, in order to guarantee the stability of second electrode 1026 in the electrolytic solution, it is electrolysed liquid pool
1022 further include first support bar 1022d, and one end of a kind of embodiment, first support bar 1022d is connect with pond ontology 1022b,
The other end of first support bar 1022d is connect with second electrode 1026, to guarantee that during the test, second electrode 1026 can be with
It is kept fixed in the electrolytic solution；One end of another embodiment, first support bar 1022d is connect with pond ontology 1022b, and first
The other end of strut 1022d is dipped in electrolyte and contacts with second electrode 1026, to compress second electrode 1026.Wherein,
The connection type of one support rod 1022d and pond ontology 1022b are unlimited.
In the application, in order to avoid second electrode 1026 is contacted with candidate particles, the inner wall of accommodating chamber 1022ba is set as
Hierarchic structure, that is to say, that size of the accommodating chamber 1022ba in itself axial (Y-direction in Fig. 2) can be set unequal,
In this way, will appear cascaded surface on inner wall at the connecting position of two sections of size difference cavitys, at this point, second electrode 1026 is arranged
Both on the cascaded surface, which can reduce the risk that second electrode 1026 is in contact with candidate particles, and then reduce
Between occur short circuit risk.
As shown in fig. 7, electro-chemical systems 102 further include electrode holder 1030, electrode holder 1030 is for installing the first electricity
Pole 1024, drive system 104 are connect via electrode holder 1030 with first electrode 1024, and electrode holder 1030 has multiple installations
Position, each installed position can install a first electrode 1024, and therefore, the installation site of first electrode 1024 is more
Flexibly, also, an electrode holder 1030 can install multiple first electrodes 1024 simultaneously.
It is, of course, also possible to different installation sites be arranged to different sizes, to facilitate and various sizes of first electricity
Pole 1024 matches, to meet more different testing requirements.
Specifically, in the embodiment shown in fig. 7, electrode holder 1030 includes the first fixed part 1030a being connected
With the second fixed part 1030b, wherein the first fixed part 1030a is connect with drive system 104, the first fixed part 1030a
It is connect with the second fixed part 1030b.
First fixed part 1030a is provided with the first groove 1030aa, the second fixed part 1030b and is provided with the second groove
1030ba, the first groove 1030aa and the second groove 1030ba are oppositely arranged, after the two fastening, the first groove 1030aa and the
Holding chamber is collectively formed in two groove 1030ba, and under the action of fastener (such as bolt), first electrode 1024 is clamped to be fixed
In in the holding chamber, the structure setting of above-mentioned electrode holder 1030 is simple, replaces 1024 relatively convenient of first electrode.
It should be noted that at least one installed position can use the structure of holding chamber described above, at it
Its installed position can also use other connection structures, such as match in first electrode 1024 and electrode holder 1030
Clamping structure is set, and first electrode 1024 is connected in one of installed position of electrode holder 1030.
It is arranged to second support bar 1030ab and fixing piece 1030ac two continuing with referring to Fig. 7, the first fixed part 1030a
Part, the first groove 1030aa are set to fixing piece 1030ac, second support bar 1030ab and fixing piece 1030ac and detachably connect
It connects, this is easy to implement the independent maintenance and replacement of second support bar 1030ab and fixing piece 1030ac, reduces maintenance cost.
In addition, second support bar 1030ab also may include at least two sections, it is detachably connected between each section, in this way, surveying
It, can be according to the length of actual bulk flexible configuration second support bar 1030ab when examination, it is readily appreciated that, the second support
Adjusting for the length of bar 1030ab can be realized by selecting the section of different number.
There are many modes being detachably connected, for example, in adjacent two sections, wherein threaded hole is provided on one section, it is another
Section includes screw rod, and screw rod is screwed in threaded hole can be realized and is detachably connected, further, it is also possible to be clamped by the way of buckle solid
It is fixed.
It should be noted that the direction that opens up of the first groove 1030aa and the second groove 1030ba can also be with the second support
The extending direction of bar 1030ab is arranged in angle ɑ, for example, 0 °≤ɑ < 180 °.After being arranged in this way, first electrode 1024 can basis
The difference of installation site where it, state in which is different, for example, state in a vertical shape after the installation of first electrode 1024
Or heeling condition etc., to meet the test request under different situations.
Certainly, the depth that opens up of the first groove 1030aa and the second groove 1030ba can also be different, so as to form
Holding chamber of different sizes, to match with various sizes of first electrode 1024.
Known, visualization system 106 is used to observe the images of candidate particles, and in the present embodiment, visualization system 106 is wrapped
Microscope 106a is included, microscope 106a can amplify small items, so as to naked eyes as it can be seen that for candidate particles, size
It calculates in microns, compared to using for other imaging devices, clarity when using micro- sem observation is higher.
Further, visualization system 106 can also include light source 106b, and light source 106b provides photograph for the imaging of candidate particles
Bright, so that the image quality of candidate particles is higher, when being illuminated using light source 106b, the light that light source 106b is issued passes through accommodating chamber
1022ba is projected on candidate particles carrying tablet 1022ab, so as to improve brightness, optimizes the candidate particles in electrolyte
Image quality.
Microscope 106a and light source 106b can be linked together by adapter, adapter can be stainless steel, aluminium,
The plate that bolt hole is had made of the materials such as copper, polytetrafluoroethylene (PTFE), organic glass, nitrocellulose, with bolt respectively by microscope
106a and light source 106b are fastened on adapter.
Optionally, visualization system 106 can also be connect with drive system 106, so that visualization system 106 can be
It is mobile relative to candidate particles under the drive of drive system, candidate particles are observed so as to more convenient.
During carrying out electrochemical property test, test result is impacted in order to reduce vibration, the application mentions
The electrochemical property test device 1 of confession further includes vibration isolation table 110, and vibration isolation table 110 its is removed in electrochemical property test device 1
Its component is all set in vibration isolation table 110, and vibration isolation table 110 can use asbestos, rubber and other materials with pooling feature
Matter is made, and vibration can be absorbed in above-mentioned material, reduces amplitude.
On the other hand, electrochemical property test device 1 further includes shielded box 112, and shielded box 112 is set to vibration isolation table 110
On, vibration isolation table 110 is removed in electrochemical property test device 1 and other components of electrochemical workstation 1028 are covered at
In shielded box 112, shielded box 112 can reduce influence of the external electromagnetic signal to test, reduces test noise, improves noise
Than.
In the application, fitted together between electro-chemical systems 102 and visualization system 106 by adapter, electrochemistry
Adapter between system 102 and visualization system 106 can be stainless steel, aluminium, copper, polytetrafluoroethylene (PTFE), organic glass, nitrification
P-wire in electro-chemical systems 102, is fastened on by the supporting element that clamping part is had made of fiber and other material using clamping part
On microscope 106a.
Similarly, control system 104 and visualization system 106 can also be fitted together by adapter, control system 104
Adapter between visualization system 106 can be stainless steel, aluminium, copper, polytetrafluoroethylene (PTFE), organic glass, nitrocellulose etc.
Microscope 106a and control system 104, are fastened on adapter by the plate that bolt hole is had made of material with bolt.
Below with reference to electrochemical testing device 1 provided by the present application, testing process is illustrated.
1) loading electrolyte pond 1022 is organized, by candidate particles (LiCoO2) be dispersed on candidate particles carrying tablet 1022ab, so
Candidate particles carrying tablet 1022ab, Chi Benti 1022b are successively overlayed on pedestal 1022a afterwards, with bolt by pond ontology 1022b
It is fastened on pedestal 1022a, is sealed between the two by sealing element 1022c, prevent electrolyte from leaking, electrolyte is contained in pond sheet
In the accommodating chamber 1022ba of body 1022b, second electrode 1026 is placed on the cascaded surface of pond ontology 1022b, and infiltrated in electricity
It solves in liquid, second electrode 1026 is fixed on cascaded surface using first support bar 1022d.
2) first electrode 1024 is installed, each section in second support bar 1030ab is linked together, then and fixing piece
1030ac is fixed, next, first electrode 1024 is placed in the first groove 1030aa and the second groove 1030ba, and is utilized
Bolt tightens together the first fixed part 1030a with the second fixed part 1030b, will finally be equipped with first electrode 1024
Electrode holder 1030 be installed in drive system 104.
3) drive system 104 is fixed on microscope 106a, by electrochemical workstation by system assembles by adapter
1028 are fixed on microscope 106a by adapter, and electrolysis liquid pool 1022 is mounted on microscope 106a via pedestal 1022a
On, light source 106b is mounted on microscope 106a by adapter.
4) system that group is built up in 3) step is put into shielded box 112, and be placed in vibration isolation table 110.
5) it drives first electrode 1024 to move using drive system 104, makes itself and the candidate particles in electrolysis liquid pool 1022
Contact is observed the motion state of the candidate particles and first electrode 1024 in electrolysis liquid pool 1022 using microscope 106a, guaranteed
The two contact；Improve the image quality of candidate particles in electrolysis liquid pool 1022 using light source 106b.
6) second electrode 1026 in first electrode 1024 and electrolysis liquid pool 1022 is connected to electrochemical workstation 1028
On, start to carry out electro-chemical test, electrolyte is 1M LiClO4/ EC+PC (volume ratio of EC and PC are 1:1).
Fig. 8 shows the curve graph of the charge and discharge of tested particle.Wherein, charge-discharge magnification 0.5C, charging/discharging voltage model
It encloses for 3V-4.4V.It is learnt from Fig. 8, the charge and discharge curve smoothing tested, it can be seen that apparent orderly/unordered
The voltage platform of phase transformation transformation.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (14)
1. a kind of electrochemical property test device characterized by comprising
Electro-chemical systems；
Drive system；
Visualization system；And
Control system,
Wherein, the electro-chemical systems include electrolysis liquid pool, first electrode, second electrode and electrochemical workstation, the electricity
Solution liquid pool is for holding electrolyte, and one end of the first electrode is dipped in the electrolysis liquid pool, and is contacted with candidate particles, separately
One end is electrically connected with the electrochemical workstation, and one end of the second electrode is dipped in the electrolysis liquid pool, the other end and institute
Electrochemical workstation electrical connection is stated,
The drive system is connect with the first electrode, to drive the first electrode to contact with the candidate particles,
The visualization system is used to observe the candidate particles,
The control system is electrically connected with the electro-chemical systems, the drive system and the visualization system.
2. electrochemical property test device according to claim 1, which is characterized in that the electrolysis liquid pool includes being connected
Pedestal and Chi Benti, the pond ontology includes accommodating chamber, and electrolyte is contained in the accommodating chamber.
3. electrochemical property test device according to claim 2, which is characterized in that offered on the pond ontology logical
Hole, the pedestal are sealedly attached to one end of the through-hole, to form the accommodating chamber.
4. electrochemical property test device according to claim 3, which is characterized in that the pedestal include base body and
It is supported in the candidate particles carrying tablet of the base body,
The candidate particles carrying tablet is transparent material, and for placing the candidate particles, the candidate particles carrying tablet exists
The through hole and the pond ontology are sealingly engaged,
The base body is arranged to, and extraneous light can be projeced into the candidate particles carrying tablet.
5. electrochemical property test device according to claim 4, which is characterized in that offered on the base body
Unthreaded hole, candidate particles described in the loophole face.
6. according to the described in any item electrochemical property test devices of claim 2-5, which is characterized in that the accommodating chamber it is interior
Wall is hierarchic structure, and the second electrode is set on the cascaded surface of the hierarchic structure.
7. according to the described in any item electrochemical property test devices of claim 2-5, which is characterized in that the electrolysis liquid pool is also
Including first support bar, the pond ontology is fixed in one end of the first support bar, and the other end is contacted with the second electrode,
With the fixation second electrode.
8. according to the described in any item electrochemical property test devices of claim 2-5, which is characterized in that the electro-chemical systems
It further include electrode holder, the drive system is connect via the electrode holder with the first electrode, the electrode holder tool
Have multiple for installing the installation site of the first electrode.
9. electrochemical property test device according to claim 8, which is characterized in that the electrode holder includes being connected
First part and second part, the first part connect with the drive system,
The first part connect to form holding chamber with the second part, and the second electrode is clamped and fastened on the holding chamber
Interior, at least one described installed position is provided with the holding chamber.
10. electrochemical property test device according to claim 1-5, which is characterized in that the visualization system
System includes microscope, and the candidate particles pass through the microscopic.
11. electrochemical property test device according to claim 10, which is characterized in that the visualization system further includes
Light source, the light source provide illumination for the imaging of the candidate particles.
12. electrochemical property test device according to claim 1-5, which is characterized in that it further include vibration isolation table,
Other components that the vibration isolation table is removed in the electrochemical property test device are all set in the vibration isolation table.
13. electrochemical property test device according to claim 12, which is characterized in that it further include shielded box, the screen
It covers case to be set in the vibration isolation table, the vibration isolation table and the electrochemistry work is removed in the electrochemical property test device
The other components for making to stand are covered in the shielded box.
14. electrochemical property test device according to claim 1-5, which is characterized in that the drive system
It is connect with the visualization system, to drive the visualization system mobile relative to the candidate particles.
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