CN109962321A - A kind of test device in oxygen reduction cathode service life - Google Patents
A kind of test device in oxygen reduction cathode service life Download PDFInfo
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- CN109962321A CN109962321A CN201711336317.2A CN201711336317A CN109962321A CN 109962321 A CN109962321 A CN 109962321A CN 201711336317 A CN201711336317 A CN 201711336317A CN 109962321 A CN109962321 A CN 109962321A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M12/00—Hybrid cells; Manufacture thereof
- H01M12/08—Hybrid cells; Manufacture thereof composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type
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- 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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- Manufacturing & Machinery (AREA)
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- General Chemical & Material Sciences (AREA)
- Hybrid Cells (AREA)
Abstract
A kind of test device and test method in oxygen reduction cathode service life, cathode to be measured, zinc electrode collector, oxygen are precipitated electrode and are placed in electrolyte, using zinc electrode collector as cathode by the shell that electrolyte is housed using one, it is anode that electrode, which is precipitated, with cathode to be measured or oxygen, constitutes battery system；Zinc electrode collector is connected with the cathode of battery charging and discharging tester；When charging, electrode is precipitated with oxygen in the anode of battery charging and discharging tester and is connect；When electric discharge, the anode of battery charging and discharging tester is connect with cathode to be measured, test process is carried out by charging, shelving, discharge, shelving step cycle.Charging process regenerates zinc electrode, so that from replacing zinc electrode in oxygen reduction cathode Lifetest procedure.
Description
Technical field:
The test device and test method in oxygen reduction cathode service life.
Background technique:
Hydrogen reduction (Oxygen Reduction Reaction, ORR) cathode is in metal-air batteries and fuel cell
It is widely used, performance and service life are two mostly important parameters of ORR cathode.
For metal-air batteries (such as magnesium/air, aluminium/air, zinc/air), when testing ORR cathode life, need
Regularly replace metal electrode.Due to the difference of metal electrode capacity and discharge current, the time of electrode replacement is also different, but gold
The time for belonging to electrode replacement is typically about a few hours.Therefore (thousands of hours) is tested for long-time cathode life, metal electrode
It is huge to replace workload, greatly limits the test of ORR cathode life.
For zinc/air cell, since zinc electrode can be at third electrode (oxygen precipitation electrode) in water solution system
Auxiliary under by electro-deposition regenerate, therefore can avoid zinc electrode frequent replacement, improve ORR cathode life testing efficiency.
Summary of the invention
In order to avoid the frequent replacement of zinc electrode, under the auxiliary that aqueous liquid ties up to third electrode again by electro-deposition
It is raw.
The purpose of the present invention is what is be achieved through the following technical solutions:
Electrode, zinc electrode collector, gasket, outer is precipitated in a kind of oxygen reduction cathode endurance testing device, including shell, oxygen
Fixed plate；
Through-hole is offered in shell right side, electrode is precipitated in oxygen and zinc electrode collector is placed in parallel in enclosure interior, and
Parallel with through-hole on the right side of shell, oxygen is precipitated electrode and can be placed between zinc electrode collector and shell right side through-hole, or places
In the separate shell right side through-hole side of zinc electrode collector；The outer stationary plates are for fixing a cathode to be measured, after fixed
The cathode parallel to be measured is placed on the right side of the shell between through-hole and fixed plate；Through-hole outer edge is provided on the right side of the shell
Gasket.
A kind of fixed form is to be evenly equipped with 3 or more through-holes in outer stationary plates edge, corresponding in appearance
Offer 3 or more threaded holes in device right wall, 3 or more screw rods are each passed through after through-hole and corresponding threaded hole spiral shell
It closes.
Outer stationary plates are the annular or U-shaped board for offering through-hole, and through-hole is in the hollow region that gasket seal is surrounded
It is interior；Or the plate of runner is offered for left side, and 2 or more through-holes are offered with fixed plate surrounding or right wall, it is real
The disengaging of existing gas.
The zinc electrode collector be porous conductive material, as foam copper, nickel foam, copper mesh, nickel screen, carbon felt, carbon paper or
One of carbon cloth or two kinds or more.
It is resistant material that electrode, which is precipitated, in the oxygen, such as one of nickel, titanium, stainless steel or two kinds or more.
The oxygen, which is precipitated on electrode, can load catalyst；The catalyst is that oxygen evolution reaction is active to urge with being catalyzed
Agent, such as Ir, IrO2、Ru、RuO2, NiFe-LDH etc..
A kind of test method carrying out the oxygen reduction cathode service life using the oxygen reduction cathode endurance testing device, including to
It surveys cathode installation, electrolyte injection, be passed through gas and charge and discharge cycles step.
The cathode installation method to be measured is to be sequentially placed gasket, cathode to be measured, outer stationary plates in container right wall, is held
Device right wall is amplexiformed with gasket, gasket and cathode catalysis layer side to be measured, cathode diffusion layer side to be measured and outer stationary plates, and is held
Device right wall through-hole is in the hollow region that gasket seal is surrounded；
Apply the thrust to container direction in outer stationary plates, container right wall and gasket, gasket and yin to be measured can be made
Pole seals between Catalytic Layer side.
The electrolyte is alkaline solution or salting liquid dissolved with Zn (II) species；
Zn (II) species are ZnO, ZnCl2、Zn(NO3)2、Zn(CH3COO)2Or it can dissolve and generate Zn (II) species
One of other metal salts or oxide or two kinds or more, concentration 0.1-3mol/L.
The alkaline solution is the aqueous solution of KOH, NaOH, LiOH or two kinds or more of mixed solution, concentration are
0.5-10mol/L；
The salting liquid is NH4Cl、ZnCl2Aqueous solution or mixed solution, concentration 0.5-10mol/L.
The gas is air, oxygen or containing one of oxygen gas mixture or two kinds or more；；
It is described containing oxygen gas mixture by oxygen and one of carbon dioxide, nitrogen, argon gas or it is a variety of mix, oxygen
Content is 1%-100%
The charge and discharge cycles are carried out by charging, shelving, discharge, shelving step cycle；
Wherein discharge step is cathode life testing procedure to be measured, and charging, shelving step is additional step.
Zinc electrode collector is connected with the cathode of battery charging and discharging tester；When charging, by battery charging and discharging tester
Anode with oxygen precipitation electrode connect；When electric discharge, the anode of battery charging and discharging tester is connect with cathode to be measured.
The charging process is precipitated on electrode and zinc electrode collector by oxygen and is carried out, and oxygen, which is precipitated on electrode, occurs oxygen precipitation instead
It answers, the deposition reaction of zinc, density of charging current 25-2000mA/cm occurs on zinc electrode collector2；
The discharge process carries out on zinc electrode collector and cathode to be measured, and the dissolution of zinc occurs on zinc electrode collector
It reacts, oxygen reduction reaction, discharge current density 1-800mA/cm occurs on cathode2。
The charging process time is 0.1-10h, and discharge process blanking voltage is 0.4-1.0V.
The process electric current of shelving is 0, and shelving the time is 0-5 hours.
Compared with prior art, the present invention has the advantages that significantly simplify the oxygen reduction electrode service life from replacing zinc electrode
Test process.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, making letter to the attached drawing used needed for embodiment below
The introduction wanted.Obviously, it is only some embodiments of the present invention that middle attached drawing, which is described below, for the ordinary skill people of this field
Member, without creative efforts, can also be obtained according to these attached drawings other accompanying drawings.
Fig. 1 is zinc-air battery cathode life continuous test device schematic diagram, including test device container (1), electrolyte
(2), electrode (3), zinc electrode collector (4), gasket (5), cathode to be measured (6), outer stationary plates (7), bolt (8) are precipitated in oxygen.
Fig. 2 is the data that embodiment carries out oxygen reduction cathode life test.
Specific embodiment
It is clearly and completely described below with reference to the technical solution in the embodiment of the present invention, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, this field is general
Logical technical staff's every other embodiment obtained under the premise of no creative work, belongs to protection model of the invention
It encloses.
Electrode, zinc electrode collector, gasket, outer is precipitated in a kind of oxygen reduction cathode endurance testing device, including shell, oxygen
Fixed plate；Through-hole is offered in shell right side, electrode is precipitated in oxygen and zinc electrode collector is placed in parallel in enclosure interior, and with
Through-hole is parallel on the right side of shell, and oxygen is precipitated electrode and can be placed between zinc electrode collector and shell right side through-hole, or is placed in
The separate shell right side through-hole side of zinc electrode collector；The outer stationary plates are for fixing a cathode to be measured, institute after fixing
Cathode parallel to be measured is stated to be placed on the right side of the shell between through-hole and fixed plate；Through-hole outer edge is provided with close on the right side of the shell
Packing.
A kind of fixed form is to be evenly equipped with 4 through-holes in outer stationary plates edge, corresponding in the container right side
4 threaded holes are offered on wall surface, 4 screw rods screw togather after being each passed through through-hole with corresponding threaded hole.
Outer stationary plates are the plate that left side offers runner, and offer 2 through-holes with fixed plate right wall, realize gas
Disengaging.
The test method in oxygen reduction cathode service life, including yin to be measured are carried out using the oxygen reduction cathode endurance testing device
Pole installation, is passed through gas and charge and discharge cycles step at electrolyte injection.
The cathode installation method to be measured is to be sequentially placed gasket, cathode to be measured, outer stationary plates in container right wall, is held
Device right wall is amplexiformed with gasket, gasket and cathode catalysis layer side to be measured, cathode diffusion layer side to be measured and outer stationary plates, and is held
Device right wall through-hole is in the hollow region that gasket seal is surrounded；
Apply the thrust to container direction in outer stationary plates, container right wall and gasket, gasket and yin to be measured can be made
Pole seals between Catalytic Layer side.
Embodiment
As shown in Figure 1, placing outer stationary plates, oxygen reduction cathode, gasket with outside test device container right wall, use
Bolt is fixed, and the oxygen of 50mL/min is passed through into outer stationary plates runner.
By zinc electrode collector, oxygen be precipitated battery be placed in the electrolyte in test device container, electrolyte be containing
The 8mol/L KOH solution of 0.5mol/L ZnO.
With 50mA/cm2Charging 30min, 1min, 50mA/cm are shelved2It is discharged to blanking voltage 0.75V, shelves the journey of 1min
Sequence is recycled.
Take the discharge data in cyclic process as the life test data of oxygen reduction electrode, as shown in Figure 2.Comparative example
As shown in Figure 1, placing outer stationary plates, oxygen reduction cathode, gasket with outside test device container right wall, use
Bolt is fixed, and the oxygen of 50mL/min is passed through into outer stationary plates runner.
Zinc electrode collector is placed in the electrolyte in test device container, electrolyte is 7mol/L KOH solution.
The test device and test method are similar with tradition replacement zinc electrode progress oxygen reduction cathode life test at this time.
With 50mA/cm2It is discharged to blanking voltage 0.75V, replacement zinc electrode, replacement electrolyte re-start discharge procedures,
It is reciprocal to carry out.The operation of visual contrast example method is very complicated.
Claims (5)
1. a kind of oxygen reduction cathode endurance testing device, it is characterised in that: including shell, oxygen be precipitated electrode, zinc electrode collector,
Gasket, outer stationary plates；
Through-hole is offered in shell right side, electrode is precipitated in oxygen and zinc electrode collector is placed in parallel in enclosure interior, and and shell
Through-hole is parallel on the right side of body, and oxygen is precipitated electrode and can be placed between zinc electrode collector and shell right side through-hole, or is placed in zinc
The separate shell right side through-hole side of electrode current collecting body；The outer stationary plates are described after fixed for fixing a cathode to be measured
Cathode parallel to be measured is placed on the right side of the shell between through-hole and fixed plate；Through-hole outer edge is provided with sealing on the right side of the shell
Pad.
2. test device as described in claim 1, it is characterised in that: outer stationary plates are the annular or U-shaped board for offering through-hole, and
Through-hole is on the right side of shell in the hollow region of through-hole after outer stationary plates are fixed；Or the plate of runner is offered for left side, and
2 or more through-holes are offered in fixed plate surrounding or right wall, realize the disengaging of gas.
3. test device as described in claim 1, it is characterised in that: the zinc electrode collector is porous conductive material, described
Porous conductive material is the compound of one of foam copper, nickel foam, copper mesh, nickel screen, carbon felt, carbon paper or carbon cloth or two kinds or more
Material.
4. test device as described in claim 1, it is characterised in that: it is resistant material, the corrosion resistant that electrode, which is precipitated, in the oxygen
Corrosion material is the composite material of one of nickel, titanium, stainless steel or two kinds or more.
5. the test device as described in claim 1 or 4, it is characterised in that: the oxygen, which is precipitated on electrode, loads aerobic precipitation catalysis
Agent；It is Ir, IrO that catalyst, which is precipitated, in the oxygen2、Ru、RuO2, one or more of NiFe-LDH.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711336317.2A CN109962321A (en) | 2017-12-14 | 2017-12-14 | A kind of test device in oxygen reduction cathode service life |
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| CN201711336317.2A CN109962321A (en) | 2017-12-14 | 2017-12-14 | A kind of test device in oxygen reduction cathode service life |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111082068A (en) * | 2019-11-21 | 2020-04-28 | 电子科技大学 | Anode of methanol fuel cell and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103650232A (en) * | 2011-05-19 | 2014-03-19 | 法国电气公司 | Metal-air accumulator with air electrode protection device |
| CN105098292A (en) * | 2015-07-28 | 2015-11-25 | 清华大学 | Horizontal three-electrode electrochemical rechargeable zinc-air battery |
| CN106654295A (en) * | 2017-01-18 | 2017-05-10 | 东南大学 | Air cathode based on boron-nitrogen-carbon ternary covalent composite material, preparation method for air cathode, and zinc air secondary battery |
-
2017
- 2017-12-14 CN CN201711336317.2A patent/CN109962321A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103650232A (en) * | 2011-05-19 | 2014-03-19 | 法国电气公司 | Metal-air accumulator with air electrode protection device |
| CN105098292A (en) * | 2015-07-28 | 2015-11-25 | 清华大学 | Horizontal three-electrode electrochemical rechargeable zinc-air battery |
| CN106654295A (en) * | 2017-01-18 | 2017-05-10 | 东南大学 | Air cathode based on boron-nitrogen-carbon ternary covalent composite material, preparation method for air cathode, and zinc air secondary battery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111082068A (en) * | 2019-11-21 | 2020-04-28 | 电子科技大学 | Anode of methanol fuel cell and preparation method thereof |
| CN111082068B (en) * | 2019-11-21 | 2021-06-01 | 电子科技大学 | Anode of methanol fuel cell and preparation method thereof |
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Application publication date: 20190702 |
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