CN108299868A - Catalyst coating and use its anode - Google Patents
Catalyst coating and use its anode Download PDFInfo
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- CN108299868A CN108299868A CN201610725409.9A CN201610725409A CN108299868A CN 108299868 A CN108299868 A CN 108299868A CN 201610725409 A CN201610725409 A CN 201610725409A CN 108299868 A CN108299868 A CN 108299868A
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- anode
- catalyst coating
- base material
- oxide
- nanometer carbon
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/10—Electrodes, e.g. composition, counter electrode
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Abstract
The platinum group metal materials for presetting weight ratio or its oxide, valve metal oxides, nanometer carbon material are mainly mixed the catalyst coating that composition can be applied to anode by the present invention, anode can be made to have the active catalyst coating of high electrochemical in the substrate surface of anode after thermally treated sizing；In particular, showing good electric conductivity through nanometer carbon material, anode surface resistance is effectively reduced, enables its operating voltage is long-acting to maintain in more stable stable region, extends anode service life with relatively more positive, reliable means.
Description
Technical field
The present invention is related with the electrode of electrolysis application, mainly provides a kind of catalyst painting that can effectively extend anode service life
Expect and use its anode.
Background technology
The insoluble anode material that tradition uses is broadly divided into three classes, and one is noble metal such as platinum, another kind is stone
Ink, also one is alloy lead anodes；Only, platinum expense is too high, occur when graphite and alloy lead anode high current are electrolysed corrosion,
Corrosion resistance is poor, and oxygen Evolution overpotential is big, electrochemical catalysis performance is low, electric power energy consumption is big, especially toxic in anode
Lead can be dissolved into solution, cause secondary pollution, and coating performance is made to decline.
Valve metal surface forms very thin-oxide film, and preferable chemoresistance can be endowed in most of electrolytic environments
Property, and possess excellent electric conductivity, therefore be the appropriate base material of insoluble anode；Wherein, titanium or its alloy are because with good
Mechanical property therefore be the common valve metal of insoluble anode base material.
It commonly uses and catalyst coating is further provided with the anode that valve metal (titanium or titanium alloy) is base material more, use reduction oxygen release
The catalyst coating of the overvoltage of reaction, this purposes usually contains platinum group metal or its oxide (such as yttrium oxide), and regards situation
Mixed film forms the metal oxide such as titanium, tantalum or tin；It is similar commonly use the anode equipped with catalyst coating several industry should on,
Though having acceptable efficiency and service life, only often it is insufficiently resistant in the plating engineering method that high current density carries out certain
The invasion of electrolyte.
On the Practical Operation of plating engineering method, usually when such as the high spread of voltage of voltage hurricane occurs in the rectifier of electroplating bath
When phenomenon, you can be determined anodic passivity seriously or catalyst coating starts stripping and causes resistance to become larger and be unable to maintain that certain electricity
Current density, it is necessary to after being replaced the anode of failure, just be able to carry out subsequent electroplating activity.
However, generally when carrying out electroplating activity, anode in varying numbers can be mostly set according to actual process scale,
If used anode can not have acceptable efficiency and service life under the working environment of high current density, will expend compared with
More time and the replacement at original progress anode, while the production capacity of electroplating activity can be also compressed, and be less susceptible to control relatively
Processing quality.
Invention content
In view of this, the present invention in a kind of catalyst coating that can effectively extend anode service life of offer and uses it
Anode.
Disclosed herein catalyst coating, substantially in solvent mixing preset the nanometer carbon materials of parts by weight.
Disclosed herein catalyst coating, and the platinum metal material for presetting weight ratio can be mixed in solvent
Material or its oxide, valve metal oxides and nanometer carbon material.
For the catalyst coating of the present invention in use, the substrate surface of anode can be coated on, thermally treated sizing becomes coating
In the catalyst coating of the substrate surface of anode the whole energy for improving processing procedure is used except that can make anode that there is high electrochemical activity
Except amount efficiency, good electric conductivity can be shown by nanometer carbon material effectively reduces anode surface resistance, makes its operating voltage
Be able to it is long-acting maintain in more stable stable region, extend anode service life with relatively more positive, reliable means.
According to above-mentioned technical characteristic, the described platinum metal is in the group being made of ruthenium, platinum, palladium, osmium, iridium and rhodium
At least one.
According to above-mentioned technical characteristic, the described valve metal oxides are selected from the oxygen by titanium, tantalum, niobium, zirconium, molybdenum, aluminium, hafnium and tungsten
At least one of the group of Chemistry and Physics Institute's composition.
According to above-mentioned technical characteristic, the size range of the nanometer carbon material is 10nm to 10 μm.
According to above-mentioned technical characteristic, the described nanometer carbon material be selected from by nanometer carbon particle, carbon nanotube (CNT,
Carbon nano tube), at least one of the group that is formed of graphene, carbon 60 and carbon 70.
According to above-mentioned technical characteristic, the described solvent is alcohol.
According to above-mentioned technical characteristic, the described platinum or its oxide are yttrium oxide, which is five oxygen
Change two tantalums, which is carbon nanotube.
According to above-mentioned technical characteristic, the described catalyst coating mixes the oxidation for presetting weight ratio in solvent
Iridium (IrO2), tantalum pentoxide (Ta2O5) and carbon nanotube.
According to above-mentioned technical characteristic, the described catalyst coating mixes the oxidation for presetting weight ratio in solvent
Iridium (IrO2), tantalum pentoxide (Ta2O5) and carbon nanotube；The yttrium oxide (IrO2), the tantalum pentoxide (Ta2O5) and the nanometer
The weight ratio of carbon pipe is sequentially 50.73: 46.47 : 2.8.
According to above-mentioned technical characteristic, the described catalyst coating mixes the oxidation for presetting weight ratio in solvent
Iridium (IrO2), tantalum pentoxide (Ta2O5) and carbon nanotube；The yttrium oxide (IrO2), the tantalum pentoxide (Ta2O5) and the nanometer
The weight ratio of carbon pipe is sequentially 51.5：31.5：17.
The present invention separately discloses a kind of anode that can effectively prolong the service life, which includes at least a base material and a catalyst
Coating, the wherein catalyst coating are coated in a surface of the base material, and the catalyst coating includes at least the nanometer carbon material.
According to above-mentioned technical characteristic, the described catalyst coating further includes a platinum metal or its oxide and valve gold
Belong to oxide.
According to above-mentioned technical characteristic, the described anode further includes a top coating and the top coating is coated in the catalyst coating
The non-surface contacted with the base material.
According to above-mentioned technical characteristic, the described anode is in one top coating of covering surface of the catalyst coating；The top coating packet
Containing selected from least one of the group being made of valve metal oxides, tin-oxide and spinel oxides.
According to above-mentioned technical characteristic, the described top coating is valve metal oxides.
According to above-mentioned technical characteristic, the base material of the anode is valve metal substrates.
According to above-mentioned technical characteristic, the base material of the anode is titanium-based material.
According to above-mentioned technical characteristic, the base material of the anode is titanium alloy base material.
According to above-mentioned technical characteristic, networking plate is pre-machined in the base material of the anode.
According to above-mentioned technical characteristic, the base material of the anode is pre-machined into rod-shaped.
According to above-mentioned technical characteristic, spike is pre-machined into the base material of the anode.
Disclosed herein catalyst coating, substantially in solvent mixing preset the nanometer carbon materials of parts by weight；
Or the platinum group metal materials for presetting weight ratio or its oxide, valve metal oxides, nanometer carbon material are mixed
Composition can be applied to the catalyst coating of anode in solvent；After the catalyst coating is coated on the substrate surface of anode, then make
After most or whole solvent volatilizations, such as thermally treated sizing or sintering, can be formed in the substrate surface of anode can make anode
With the active catalyst coating of high electrochemical；In particular, showing good electric conductivity through nanometer carbon material, sun is effectively reduced
Pole surface resistance enables its operating voltage is long-acting to maintain in more stable stable region, with relatively more actively, reliably
Means extend anode service life.
Description of the drawings
Fig. 1 is the anode appearance structure chart of first embodiment of the invention.
Fig. 2 is a preferred embodiment of the present invention anode lateral partial structurtes sectional view.
Fig. 3 be using anode and habit of the present invention added with nanometer carbon material (CNT) catalyst coating have use be not added with how
The aging figure of the anode of rice carbon material (CNT) catalyst coating.
Fig. 4 be using anode and habit of the present invention added with nanometer carbon material (CNT) catalyst coating have use be not added with how
The anode of rice carbon material (CNT) catalyst coating carries out the cyclic voltammogram before senile experiment.
Fig. 5 be using anode and habit of the present invention added with nanometer carbon material (CNT) catalyst coating have use be not added with how
The anode of rice carbon material (CNT) catalyst coating carries out the cyclic voltammogram after senile experiment.
Fig. 6 is the anode appearance structure chart of second embodiment of the invention.
Fig. 7 is the anode appearance structure chart of third embodiment of the invention.
Figure number explanation：
10 anodes
11 base materials
12 catalyst coatings
13 top coatings.
Specific implementation mode
Present invention generally provides a kind of catalyst coating that can effectively extend anode service life and its anode is used, this
The catalyst coating of invention mixes the nanometer carbon material for presetting parts by weight substantially in solvent；Or it is mixed in solvent
Preset platinum group metal materials or its oxide, the valve metal oxides and nanometer carbon material of weight ratio.
In implement when, the described platinum metal in the group being made of ruthenium, platinum, palladium, osmium, iridium and rhodium at least one
Kind；The described valve metal oxides in the group that the oxide by titanium, tantalum, niobium, zirconium, molybdenum, aluminium, hafnium and tungsten is formed extremely
Few one kind；The described nanometer carbon material is selected from and is made of nanometer carbon particle, carbon nanotube, graphene, carbon 60 and carbon 70
At least one of group；As for the solvent can be then alcohol.The size range of the nanometer carbon material can be 10nm to 10
μm。
The catalyst coating of the present invention mixes the nanometer carbon materials for presetting parts by weight in the case where one implements kenel in solvent
Material.
The catalyst coating of the present invention mixes the oxidation for presetting weight ratio under another implementation kenel in solvent
Iridium (IrO2), tantalum pentoxide (Ta2O5) and carbon nanotube；When implementing, yttrium oxide (IrO2), tantalum pentoxide (Ta2O5) and
The weight ratio of carbon nanotube can be sequentially 50.73: 46.47 :2.8 or 51.5：31.5：17；Wherein, yttrium oxide
(IrO2), tantalum pentoxide (Ta2O5) and carbon nanotube weight ratio again sequentially with 51.5：31.5：17 are preferred.
In principle, catalyst coating of the invention is thermally treated to be shaped into use, the substrate surface of anode can be coated on
Catalyst coating to be coated in the substrate surface of anode is used except anode can be made to have high electrochemical activity and improves processing procedure
Except integral energy efficiency, good electric conductivity can be more shown by nanometer carbon material effectively reduces anode surface resistance, makes it
Operating voltage be able to it is long-acting maintain in more stable stable region, extending anode with relatively more positive, reliable means makes
Use the service life.
As shown in Figures 1 and 2, the present invention separately discloses a kind of anode 10 that can effectively prolong the service life, the anode 10 in
The surface coating or coating one of one base material 11 are by any of the above-described kind of catalyst coating that may implement kenel of the invention in the sun
Behind the surface of the base material 11 of pole 10, after then making most or whole solvent volatilizations, such as thermally treated sizing or sintering, it can
Being formed in the surface of the base material 11 of the anode 10 can make anode 10 have the active catalyst coating of high electrochemical 12；Yu Shi
The base material 11 of Shi Shi, the anode 10 can be valve metal substrates, in a preferable feasible embodiment, the anode 10
The base material 11 is titanium or its alloy.
Also that is, the anode 10 of the present invention is added in one by titanium or its alloy under a preferable feasible implementation structure kenel
11 covering surface one of base material made of work by the thermally treated sizing of catalyst coating the catalyst coating 12, the catalyst coating in
It is sequentially 51.5 that mixing, which presets weight ratio, in solvent：31.5：17 yttrium oxide (IrO2), tantalum pentoxide (Ta2O5)
And carbon nanotube.
Also that is, the catalyst coating 12 of the anode 10 of the present invention includes at least nanometer carbon material.Alternatively, the present invention's should
The catalyst coating 12 of anode 10 includes at least platinum metal or its oxide, valve metal oxides and nanometer carbon material.
Catalyst coating used in anode 10 due to the present invention is added with the nanometer carbon materials for presetting weight ratio
Material, therefore nanometer carbon material shows good electric conductivity, effectively reduces anode surface resistance, as shown in figure 3, to be on anode
It is no to have the aging figure for adding suitable nanometer carbon material；Wherein, it is to be not added with nanometer by the curve that oval sign is marked
The anode of carbon material, it can be found that the time in the anode for being not added with nanometer carbon material its voltage heap and slowly rise, and nothing
Method maintains current density at the beginning, this also meant that its anodic passivity is serious or coating start stripping cause resistance become larger and
It is unable to maintain that certain current density.
The curve marked by circle symbol in Fig. 3 is to be added with nanometer carbon material using the present invention in the present invention
(CNT) anode of catalyst coating, it can be found that its voltage is more steadily in general described stable region, when being not added with nanometer
There is the anode voltage of addition nanometer carbon material also to maintain not fail centainly when the anode failure of carbon material.
Please coordinate simultaneously with reference to shown in Fig. 4 and Fig. 5, before senile experiment (as shown in Figure 4), is marked by circle symbol
The anode circulation volt-ampere figure of nanometer carbon material (CNT) catalyst coating is added in the present invention using the present invention, it is bigger oval
What pictograph number was marked is not added with the anode circulation volt-ampere figure of nanometer carbon material, it was demonstrated that is added with using the present invention in the present invention
The anode activity of nanometer carbon material (CNT) catalyst coating is more than the anode for being not added with nanometer carbon material.
And after senile experiment (as shown in Figure 5), present invention addition is used in the present invention marked by circle symbol
There is the anode circulation volt-ampere figure of nanometer carbon material (CNT) catalyst coating then also to maintain certain size, as by oval pictograph
Number anode circulation volt-ampere figure for being not added with nanometer carbon material marked has significant difference (its figure obviously becomes smaller), more
It proves that the anode activity for being not added with nanometer carbon material becomes smaller, also illustrates that the anode for being not added with nanometer carbon material is electric in figure 3
The big reason of resistive.
In the embodiment shown in fig. 1, networking plate can be pre-machined in the base material 11 of the anode 10；In different
Using under kenel, the base material 11 of the anode 10 can also be pre-machined into as shown in FIG. 6 rod-shaped, or be pre-machined into
Spike as shown in Figure 7.
In particular, the present invention anode 10 it is upper take off it is various may implement structure kenels under, can as shown in Fig. 2, further
In one top coating 13 of covering surface that the non-of the catalyst coating 12 contacts with the base material 11；When implementing, the described top coating 13
Including selected from least one of the group being made of valve metal oxides, tin-oxide and spinel oxides；Equally
, the described top coating 13 be valve metal oxides coating implementation kenel under, the valve metal oxides be selected from by titanium, tantalum,
At least one of the group that is formed of oxide of niobium, zirconium, molybdenum, aluminium, hafnium and tungsten.
It is compared with traditional located by prior art, the present invention will mainly mix the nanometer carbon material for presetting parts by weight in solvent
Composition can be applied to the catalyst coating of anode；Or by preset weight ratio platinum group metal materials or its oxide,
Valve metal oxides, nanometer carbon material are mixed in the catalyst coating that composition in solvent can be applied to anode；After thermally treated sizing,
Most or whole solvent volatilizations, then can be formed in the surface of the base material of anode can make anode have high electrochemical is active to touch
Matchmaker's coating.Also that is, the catalyst coating of the anode of the present invention includes at least nanometer carbon material；Alternatively, the catalyst of the anode of the present invention
Coating includes at least platinum metal or its oxide, valve metal oxides and nanometer carbon material.In particular, through nanometer carbon material
Good electric conductivity is shown, anode surface resistance is effectively reduced, enables its operating voltage is long-acting to maintain more smoothly
In stable region, extend anode service life with relatively more positive, reliable means.
Claims (23)
1. a kind of catalyst coating, which is characterized in that include at least a solvent, a platinum metal or its oxide, a valve metal oxygen
Compound and a nanometer carbon material.
2. catalyst coating as described in claim 1, which is characterized in that the platinum metal is selected from by ruthenium, platinum, palladium, osmium, iridium and rhodium
At least one of group formed.
3. catalyst coating as described in claim 1, which is characterized in that the valve metal oxides be selected from by titanium, tantalum, niobium, zirconium,
At least one of the group that is formed of oxide of molybdenum, aluminium, hafnium and tungsten.
4. catalyst coating as described in claim 1, which is characterized in that the nanometer carbon material is selected from by nanometer carbon particle, nanometer
At least one of the group that carbon pipe, graphene, carbon 60 and carbon 70 are formed.
5. catalyst coating as claimed in claim 4, which is characterized in that the size range of the nanometer carbon material is 10nm to 10 μ
m。
6. catalyst coating as described in claim 1, which is characterized in that the solvent is alcohol.
7. catalyst coating as described in claim 1, which is characterized in that the platinum metal or its oxide are yttrium oxide, the valve
Metal oxide is tantalum pentoxide, which is carbon nanotube.
8. catalyst coating as claimed in claim 7, which is characterized in that the yttrium oxide, the tantalum pentoxide and the carbon nanotube
Weight ratio be sequentially 50.73: 46.47 : 2.8.
9. catalyst coating as claimed in claim 7, which is characterized in that the yttrium oxide, the tantalum pentoxide and the carbon nanotube
Weight ratio be sequentially 51.5：31.5：17.
10. a kind of anode, which is characterized in that include at least a base material and a catalyst coating, the wherein catalyst coating is coated in this
One surface of base material, and the catalyst coating includes at least a nanometer carbon material.
11. anode as claimed in claim 10, which is characterized in that the nanometer carbon material is selected from by nanometer carbon particle, nanometer carbon
At least one of the group that pipe, graphene, carbon 60 and carbon 70 are formed.
12. anode as claimed in claim 10, which is characterized in that size range 10nm to 10 μm of the nanometer carbon material.
13. anode as claimed in claim 10, which is characterized in that the catalyst coating includes a platinum metal or its oxide,
And valve metal oxides.
14. anode as claimed in claim 13, which is characterized in that the platinum metal is selected from by ruthenium, platinum, palladium, osmium, iridium and rhodium institute
At least one of group of composition.
15. anode as claimed in claim 13, which is characterized in that the valve metal oxides be selected from by titanium, tantalum, niobium, zirconium, molybdenum,
At least one of the group that the oxide of aluminium, hafnium and tungsten is formed.
16. anode as claimed in claim 10, which is characterized in that be coated in the catalyst comprising a top coating and the top coating and apply
The non-surface contacted with the base material of layer.
17. anode as claimed in claim 16, which is characterized in that the top coating includes selected from by valve metal oxides, tin oxygen
At least one of the group that compound and spinel oxides are formed.
18. anode as claimed in claim 10, which is characterized in that the base material of the anode is valve metal substrates.
19. anode as claimed in claim 10, which is characterized in that the base material of the anode is titanium-based material.
20. anode as claimed in claim 10, which is characterized in that the base material of the anode is titanium alloy base material.
21. anode as claimed in claim 10, which is characterized in that networking plate is pre-machined in the base material of the anode.
22. anode as claimed in claim 10, which is characterized in that the base material of the anode is pre-machined into rod-shaped.
23. anode as claimed in claim 10, which is characterized in that spike is pre-machined into the base material of the anode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610725409.9A CN108299868A (en) | 2016-08-25 | 2016-08-25 | Catalyst coating and use its anode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610725409.9A CN108299868A (en) | 2016-08-25 | 2016-08-25 | Catalyst coating and use its anode |
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| Publication Number | Publication Date |
|---|---|
| CN108299868A true CN108299868A (en) | 2018-07-20 |
Family
ID=62871354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610725409.9A Pending CN108299868A (en) | 2016-08-25 | 2016-08-25 | Catalyst coating and use its anode |
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| CN101988206A (en) * | 2009-07-31 | 2011-03-23 | 拜尔材料科学股份公司 | Electrode and electrode coating |
| CN102443818A (en) * | 2010-10-08 | 2012-05-09 | 水之星公司 | Multi-layer mixed metal oxide electrode and method for making same |
| CN103981536A (en) * | 2013-02-08 | 2014-08-13 | 拜耳材料科技股份有限公司 | Catalyst coating and process for production thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1541285A (en) * | 2001-02-06 | 2004-10-27 | 美国过滤公司 | Electrode coating and its use in prodn. of chlorate |
| CN1849414A (en) * | 2003-10-08 | 2006-10-18 | 阿克佐诺贝尔公司 | Electrode |
| CN1957112A (en) * | 2004-05-20 | 2007-05-02 | 德·诺拉电极股份公司 | Anode for oxygen evolution |
| CN101111631A (en) * | 2005-01-27 | 2008-01-23 | 德诺拉工业有限公司 | High efficiency hypochlorite anodic coating |
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Application publication date: 20180720 |