CN107740143A - A kind of iron-based inert anode with ferrous acid lithium diaphragm and preparation method thereof, application - Google Patents
A kind of iron-based inert anode with ferrous acid lithium diaphragm and preparation method thereof, application Download PDFInfo
- Publication number
- CN107740143A CN107740143A CN201710904417.4A CN201710904417A CN107740143A CN 107740143 A CN107740143 A CN 107740143A CN 201710904417 A CN201710904417 A CN 201710904417A CN 107740143 A CN107740143 A CN 107740143A
- Authority
- CN
- China
- Prior art keywords
- iron
- inert anode
- anode
- lithium
- based inert
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/02—Electrodes; Connections thereof
- C25C7/025—Electrodes; Connections thereof used in cells for the electrolysis of melts
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/34—Anodisation of metals or alloys not provided for in groups C25D11/04 - C25D11/32
Abstract
The present invention relates to a kind of iron-based inert anode with ferrous acid lithium diaphragm and its preparation method and application; the iron-based inert anode internal layer is pure iron or ferrous alloy outer layer is the lithium nitride layer of ferrous acid, and by pure iron or ferrous alloy, electrochemical anodic oxidation is prepared in fused carbonate containing lithium.Iron-based inert anode provided by the invention has good electron conduction, excellent analysis oxygen catalytic performance, high stability and good thermal shock resistance, and it is cheap easy to process, can be used as using carbonate as the high temperature fused salt electrolysis system of main component in stable analysis oxygen inert anode.
Description
Technical field
The invention belongs to electrochemical technology field, and in particular to a kind of iron-based inert anode with ferrous acid lithium diaphragm and
Its preparation method and application.
Background technology
High temperature fused salt electrolysis matter is obtained with the advantages that its high ion conduction rate, wide electrochemical window in field of metallurgy
Extensive use.Molten-salt electrolysis technology plays a significant role in metal smelting, industrial aluminium, magnesium, rare earth metal, alkali metal and alkali
The smelting of earth metal uses molten-salt electrolysis technology mostly.In recent years, the molten-salt electrolysis skill new for metallurgical, resource and environmental area
Art also continuously emerges, as molten oxide electroreduction prepare liquid alloying technology, molten-salt electrolysis solid-oxide metallurgical technology,
Fuse salt traps CO2And it is electrochemically transformed as carbon or technique of carbon monoxide and oxygen, etc..The molten-salt electrolysis being related to
Plastidome includes fluoride salt, chloride salt, oxide salt, hydroxide salt, carbonate etc..
Traditional molten-salt electrolysis is mostly expendable graphite anode with anode, not only discharges substantial amounts of carbon dioxide, and
The energy consumption of electrolysis system is added, while can also discharge toxic gas, it is impossible to meets wanting for modern industrial system energy-conserving and environment-protective
Ask.Exploitation can stablize the inert anode of analysis oxygen in molten salt system, have great importance to substitute carbon annode.
Studying more inert anode in molten-salt electrolysis system at present has precious metal anode (such as platinum, gold, iridium) and ceramics sun
Pole (such as tin ash, ruthenium-oxide, nickel ferrite based magnetic loaded).Noble metal due in the earth's crust abundance it is relatively low, expensive, be not suitable for being applied to
Industrialized production.Ceramics due to its poorly conductive, thermal shock resistance is poor, be inconvenient to process with being connected the shortcomings of, be also not easy to industry
Metaplasia is produced.Metal material is with its good electron conduction, excellent mechanical performance, good thermal shock resistance, convenient processing and connects
The advantages that connecing, it is considered to be most promising inert anode material.But fuse salt is present that corrosivity is strong, temperature is high, anodic oxygen
The features such as property changed is strong, ordinary metallic material not only cause anode to damage but also polluted cloudy it occur frequently that corrosion or active dissolution
Pole product.The demand developed for specific molten-salt electrolysis system and technology, improve the anode of ordinary metallic material cheap and easy to get
Stability and analysis oxygen catalytic activity, are a not only technical barriers with huge challenge but also with important practical usage.
The content of the invention
It is an object of the invention to overcome deficiencies of the prior art, there is provided a kind of with ferrous acid lithium diaphragm
Iron-based inert anode and preparation method thereof and the application in high temperature fused salt electrolysis system.Compared to conventional anode material, this hair
The inert anode of bright offer have good electron conduction, excellent analysis oxygen catalytic performance, high mechanically and chemically stability,
Good thermal shock resistance, cheap price and it is easy to process the advantages that.To achieve the above object, the technology used in the present invention
Scheme is as follows：
A kind of iron-based inert anode with ferrous acid lithium diaphragm, by iron-based body or ferrous alloy matrix and it is coated on base
The lithium layer composition of ferrous acid in body surface face.
One of preferably, the mass fraction of iron is more than 51% in the ferrous alloy matrix, remaining metal ingredient
Including the one or more in aluminium, titanium, magnesium, chromium, manganese, nickel, tin.
Preferably, the lithium layer of the ferrous acid is by LiFeO2、LiFe5O8At least one of form.
The preparation method of above-mentioned iron-based inert anode comprises the following steps：Using iron-based body or ferrous alloy matrix as sun
Pole, through electrochemical anodic oxidation in fused carbonate containing lithium, obtain the iron-based inert anode with ferrous acid lithium diaphragm.
In such scheme, the fused carbonate containing lithium is specially lithium carbonate, or by lithium carbonate and potassium carbonate, carbonic acid
The mixed salt that one or more in sodium, calcium carbonate are mixed to form.
Preferably, the fused carbonate containing lithium is specially Li2CO3-Na2CO3-K2CO3, the mol ratio of each component is followed successively by
43.5:31.5:25。
In such scheme, anode is in fused carbonate containing lithium using permanent groove piezoelectricity solution or potentiostatic deposition or constant current electricity
The mode of solution carries out electrochemical anodic oxidation, and electrolysis temperature is controlled between 500 DEG C -1000 DEG C, and electrolysis time is controlled at 4 points
Between clock -100 hours.
The above-mentioned iron-based inert anode with ferrous acid lithium diaphragm is in the high temperature fused salt electrolysis using carbonate as main component
Application in system.
In such scheme, in fused salt the mass fraction of carbonate be not less than 60%, remaining composition be silicate, nitrate,
One or more in chloride salt, fluoride salt, oxide salt, hydroxide salt.
Compared with prior art, beneficial effects of the present invention are：(1) compared with other existing inert anodes, the present invention carries
Supply the iron-based inert anode with ferrous acid lithium diaphragm with good electron conduction, excellent analysis oxygen catalytic performance, compared with
High decay resistance, high stability, good thermal shock resistance, cheap price and it is easy to process the advantages that；(2) iron-based
Inert anode preparation method is simple, and cost is relatively low, suitable for industrialized production.
Brief description of the drawings
Fig. 1 iron-based inert anode configuration schematic diagrames provided by the invention with ferrous acid lithium diaphragm；
The iron-based inert anode surface SEM figures that Fig. 2 embodiment of the present invention 1 is prepared；
The iron-based inert anode surface XRD spectrum that Fig. 3 embodiment of the present invention 1 is prepared；
The iron-based inert anode that Fig. 4 embodiment of the present invention 1 is prepared electrolysis time-groove pressure relation in fused carbonate
Curve map.
Embodiment
To make those of ordinary skill in the art fully understand technical scheme and beneficial effect, below in conjunction with specific
Embodiment is further described.
Common metal easily corrodes when being used as anode in high-temperature fusion salt electrolysis system, and ceramic material then can be with
This corrosion is resisted well.The advantages of combining two kinds of materials well of the invention, it is prepared in iron and ferrous alloy surface
One layer of ferrous acid lithium diaphragm.Specifically preparation method is：Selection containing the lithium fused carbonate system weaker to iron rot and compared with
The easily operating temperature of generation oxide-film, anode polarization is carried out as anode using iron and ferrous alloy, one can be generated in electrode surface
The layer lithium film of ferrous acid (Fig. 1), the reaction being related to are as follows：
5Fe+8CO3 2-+Li+-15e-=LiFe5O8+8CO2(g) (1a)
Or Fe+2CO3 2-+Li+-3e-=LiFeO2+2CO2(g) (1b)。
Embodiment 1
The preparation of inert anode：Under the conditions of 650 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25) fused salt is as electrolyte, by pure iron electrode in 100mA/cm2Current density under carry out constant current
Anode pre-oxidizes 10min, and the iron-based inert anode with ferrous acid lithium diaphragm is prepared.
SEM and XRD tests are carried out to obtained iron-based inert anode respectively, as a result respectively as Figure 2-3.SEM schemes
Show that pure iron electrode covers (Fig. 2) by one layer of fine and close octahedral structure oxide crystal, XRD analysis test shows surface oxidation
The composition of film is LiFe5O8(Fig. 3).Thus prove, be prepared has fine and close LiFe under these conditions5O8Diaphragm
Pure iron inert anode.
High temperature fused salt electrolysis is tested：Under the conditions of 450 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25) fused salt does negative electrode with nickel sheet, has fine and close LiFe with what is be prepared as electrolyte5O8Protect
The pure iron electrode of cuticula does inert anode.In 100mA/cm2Anodic current density under carry out constant-current electrolysis, the process of electrolysis
In be uninterruptedly passed through carbon dioxide, obtain carbon material in negative electrode, anode obtains oxygen.It is electrolysed during 100h, its groove electricity
Press smaller and keep constant (Fig. 4), illustrate the inert anode analysed in fused carbonate oxygen ability it is strong and can be long when
Between keep stable.There is fine and close LiFe prepared by the present embodiment5O8The pure iron inert anode of diaphragm is in melting Li2CO3-
Na2CO3-K2CO3Possesses the characteristics of efficient, stable in system.
Embodiment 2
The preparation of inert anode：Under the conditions of 700 DEG C, with Li2CO3-K2CO3(mol ratio Li2CO3:K2CO3=62:38) fused salt
As electrolyte, using nickel sheet as negative electrode, Q235 carbon steel electrodes are carried out to permanent groove pressure anodic oxidation 2h under 2.2V tank voltages, at this
Under the conditions of be prepared there is fine and close LiFeO2The carbon steel inert anode of diaphragm.
High temperature fused salt electrolysis is tested：Under the conditions of 450 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25) fused salt does negative electrode with nickel sheet, has fine and close LiFeO with what is be prepared as electrolyte2Protection
The carbon steel electrode of film does inert anode.In 200mA/cm2Anodic current density under carry out constant-current electrolysis, during electrolysis
Carbon dioxide uninterruptedly is passed through, obtains carbon material in negative electrode, anode obtains oxygen.It is electrolysed during 200h, its tank voltage
It is smaller and keep constant, it is strong and can keep steady for a long time to illustrate that the inert anode analyses oxygen ability in fused carbonate
It is fixed.There is fine and close LiFeO prepared by the present embodiment2The carbon steel inert anode of diaphragm is in melting Li2CO3-Na2CO3-K2CO3
Possesses the characteristics of efficient, stable in system.
Embodiment 3
The preparation of inert anode：Under the conditions of 750 DEG C, with Li2CO3Fused salt exists 310S stainless steel electrodes as electrolyte
0.7V is (relative to Ag/Ag+) current potential under carry out constant potential anode pre-oxidation 20min.It has been prepared under the conditions of being somebody's turn to do with cause
Close LiFeO2The stainless steel inert anode of diaphragm.
High temperature fused salt electrolysis is tested：Under the conditions of 650 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25) fused salt does negative electrode to aoxidize iron plate, has fine and close LiFeO with what is be prepared as electrolyte2
The stainless steel electrode of diaphragm does anode.In 250mA/cm2Anodic current density under carry out constant-current electrolysis, obtained in negative electrode
Fe, anode obtain oxygen.It is electrolysed during 20h, inert anode analysis oxygen ability is strong and can keep stable for a long time.
There is fine and close LiFeO prepared by the present embodiment2The stainless steel inert anode of diaphragm is in melting Li2CO3-Na2CO3-K2CO3Body
Possesses the characteristics of efficient, stable in system.
Embodiment 4
The preparation of inert anode：Under the conditions of 750 DEG C, with Li2CO3Fused salt exists 310S stainless steel electrodes as electrolyte
100mA/cm2Current density under carry out constant current anode pre-oxidation 30min.It has been prepared under the conditions of being somebody's turn to do with densification
LiFeO2The stainless steel inert anode of diaphragm.
High temperature fused salt electrolysis is tested：Under the conditions of 550 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25)+20wt%Na2SO4Fused salt does negative electrode with nickel sheet, had with what is be prepared as electrolyte
Fine and close LiFeO2The stainless steel electrode of diaphragm does anode.In 100mA/cm2Anodic current density under carry out constant-current electrolysis,
Carbon dioxide is uninterruptedly passed through during electrolysis, obtains carbon sulphur composite in negative electrode, anode obtains oxygen.Electrolysis
During 100h, its tank voltage is smaller and keeps constant, illustrate the inert anode analysed in the system oxygen ability it is strong and
It can keep stable for a long time.There is fine and close LiFeO prepared by the present embodiment2The stainless steel inert anode of diaphragm is melting
Li2CO3-Na2CO3-K2CO3+ 20wt%Na2SO4Possesses the characteristics of efficient, stable in system.
Embodiment 5
The preparation of inert anode：Under the conditions of 550 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25) fused salt is as electrolyte, by pure iron electrode in 100mA/cm2Current density under carry out constant current
Anode pre-oxidizes 30min.Being prepared under the conditions of being somebody's turn to do has fine and close LiFe5O8The pure iron inert anode of diaphragm.
High temperature fused salt electrolysis is tested：Under the conditions of 400 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25)+30wt%NaOH fused salts do negative electrode with nickel sheet, have cause with what is be prepared as electrolyte
Close LiFe5O8The pure iron electrode of diaphragm does anode.In 100mA/cm2Anodic current density under carry out constant-current electrolysis, be electrolysed
During be uninterruptedly passed through carbon dioxide and vapor, obtain methane gas in negative electrode, anode obtains oxygen.Electrolysis
During 100h, its tank voltage is smaller and keeps constant, illustrate the inert anode analysed in the system oxygen ability it is strong and
It can keep stable for a long time.There is fine and close LiFeO prepared by the present embodiment2The pure iron inert anode of diaphragm is melting
Li2CO3-Na2CO3-K2CO3Possesses the characteristics of efficient, stable in+30wt%NaOH systems.
Embodiment 6
The preparation of inert anode：Under the conditions of 5550 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25) fused salt is as electrolyte, by Q235 carbon steel electrodes in 100mA/cm2Current density under carry out it is permanent
Galvanic anode pre-oxidizes 30min.Being prepared under the conditions of being somebody's turn to do has fine and close LiFe5O8The carbon steel inert anode of diaphragm.
High temperature fused salt electrolysis is tested：Under the conditions of 450 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25)+30wt%NaCl fused salts do negative electrode with nickel sheet, have cause with what is be prepared as electrolyte
Close LiFe5O8The carbon steel electrode of diaphragm does anode.In 100mA/cm2Anodic current density under carry out constant-current electrolysis, be electrolysed
During be uninterruptedly passed through carbon dioxide, obtain carbon material in negative electrode, anode obtains oxygen.It is electrolysed during 100h,
Its tank voltage is smaller and keeps constant, illustrates that the inert anode is analysed oxygen ability by force in the system and can protected for a long time
It is fixed to keep steady.There is fine and close LiFeO prepared by the present embodiment2The carbon steel inert anode of diaphragm is in melting Li2CO3-Na2CO3-
K2CO3Possesses the characteristics of efficient, stable in+30wt%NaCl systems.
Embodiment 7
The preparation of inert anode：Under the conditions of 750 DEG C, with Li2CO3-Na2CO3(mol ratio Li2CO3:Na2CO3=52:48) melt
Salt is as electrolyte, by 310S stainless steel electrodes in 100mA/cm2Current density under carry out constant current anode pre-oxidation
20min.Being prepared under the conditions of being somebody's turn to do has fine and close LiFeO2The stainless steel inert anode of diaphragm.
High temperature fused salt electrolysis is tested：Under the conditions of 900 DEG C, with Li2CO3+ 30wt%NaF fused salts are done as electrolyte with nickel sheet
Negative electrode, there is fine and close LiFeO with what is be prepared2The stainless steel electrode of diaphragm does anode.Permanent groove pressure is carried out in the pressure of 2V grooves
Electrolysis, is uninterruptedly passed through carbon dioxide, obtains carbon material in negative electrode, anode obtains oxygen during electrolysis.Electrolysis
During 100h, its tank voltage is smaller and keeps constant, illustrate the inert anode analysed in the system oxygen ability it is strong and
It can keep stable for a long time.There is fine and close LiFeO prepared by the present embodiment2The stainless steel inert anode of diaphragm is melting
Li2CO3Possesses the characteristics of efficient, stable in+30wt%NaF systems.
Embodiment 8
The preparation of inert anode：Under the conditions of 750 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25) fused salt is as electrolyte, by 310S stainless steel electrodes in 100mA/cm2Current density under carry out
Constant current anode pre-oxidizes 40min.Being prepared under the conditions of being somebody's turn to do has fine and close LiFeO2The stainless steel inert anode of diaphragm.
High temperature fused salt electrolysis is tested：Under the conditions of 900 DEG C, with Li2CO3+ 39wt%K2SiO3Fused salt is as electrolyte, with nickel
Piece does negative electrode, has fine and close LiFeO with what is be prepared2The stainless steel electrode of diaphragm does anode.In 200mA/cm2Anode
Constant-current electrolysis is carried out under current density, carbon dioxide is uninterruptedly passed through during electrolysis and periodically adds titanium dioxide
Silicon, carbon-silicon composite material is obtained in negative electrode, anode obtains oxygen.It is electrolysed during 100h, its tank voltage is smaller and keeps
It is constant, illustrate that the inert anode analyses oxygen ability by force in the system and can keep stable for a long time.Prepared by the present embodiment
There is fine and close LiFeO2The stainless steel inert anode of diaphragm is in melting Li2CO3+ 39wt%K2SiO3Possess in system efficiently,
The characteristics of stable.
Embodiment 9
The preparation of inert anode：Under the conditions of 750 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25) fused salt is as electrolyte, by pure iron electrode in 100mA/cm2Current density under carry out constant current
Anode pre-oxidizes 10min.Being prepared under the conditions of being somebody's turn to do has fine and close LiFeO2The pure iron inert anode of diaphragm.
High temperature fused salt electrolysis is tested：Under the conditions of 550 DEG C, with Li2CO3+ 10wt%LiNO3Fused salt is as electrolyte, with nickel sheet
Negative electrode is done, there is fine and close LiFeO with what is be prepared2The pure iron electrode of diaphragm does anode.In 100mA/cm2Anode current
Constant-current electrolysis is carried out under density, carbon dioxide and oxides of nitrogen gas are uninterruptedly passed through during electrolysis, in negative electrode
The carbon material of N doping is obtained, anode obtains oxygen.It is electrolysed during 100h, its tank voltage is smaller and keeps constant, says
The bright inert anode analyses oxygen ability by force in the system and can keep stable for a long time.Having prepared by the present embodiment causes
Close LiFeO2The pure iron inert anode of diaphragm is in melting Li2CO3+ 10wt%LiNO3Possesses the characteristics of efficient, stable in system.
Embodiment 10
The preparation of inert anode：Under the conditions of 750 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25) fused salt is carried out 310S stainless steel electrodes as electrolyte under 100mA/cm2 current density
Constant current anode pre-oxidizes 20min.Being prepared under the conditions of being somebody's turn to do has fine and close LiFeO2The stainless steel inert anode of diaphragm.
High temperature fused salt electrolysis is tested：Under the conditions of 900 DEG C, with Li2CO3+ 10wt%Fe3O4Fused salt is as electrolyte, with nickel sheet
Negative electrode is done, there is fine and close LiFeO with what is be prepared2The stainless steel electrode of diaphragm does anode.In 100mA/cm2Anode electricity
Constant-current electrolysis is carried out under current density, obtains elemental metals iron in negative electrode, anode obtains oxygen.It is electrolysed during 100h, its groove
Voltage is smaller and keeps constant, illustrates that the inert anode analyses oxygen ability by force in the system and can keep steady for a long time
It is fixed.There is fine and close LiFeO prepared by the present embodiment2The stainless steel inert anode of diaphragm is in melting Li2CO3+ 10wt%Fe3O4
Possesses the characteristics of efficient, stable in system.
Embodiment 11
The preparation of inert anode：Under the conditions of 650 DEG C, with Li2CO3-Na2CO3-K2CO3(mol ratio Li2CO3:Na2CO3:
K2CO3=43.5:31.5:25) fused salt is as electrolyte, by carbon steel electrode in 100mA/cm2Current density under carry out constant current
Anode pre-oxidizes 10min, and being prepared under the conditions of being somebody's turn to do has fine and close LiFe5O8The carbon steel inert anode of diaphragm.
High temperature fused salt electrolysis is tested：Under the conditions of 750 DEG C, with Na2CO3-K2CO3(mol ratio Na2CO3:K2CO3=59:41) melt
Salt is cooked negative electrode, to be prepared with fine and close LiFe as electrolyte to aoxidize nickel sheet5O8The carbon steel of diaphragm does sun
Pole.In 200mA/cm2Anodic current density under carry out constant-current electrolysis, obtain elemental metals nickel in negative electrode, anode obtains oxygen
Gas.It is electrolysed during 40h, its tank voltage is smaller and keeps constant, illustrates that the inert anode analyses oxygen ability in the system
It can keep by force and for a long time stable.There is fine and close LiFeO prepared by the present embodiment2The carbon steel inert anode of diaphragm exists
Na2CO3-K2CO3Possesses the characteristics of efficient, stable in system.
Claims (9)
1. a kind of iron-based inert anode with ferrous acid lithium diaphragm, it is characterised in that the iron-based inert anode is by iron-based body
Or ferrous alloy matrix and the lithium layer composition of ferrous acid for being coated on matrix surface.
A kind of 2. iron-based inert anode with ferrous acid lithium diaphragm according to claim 1, it is characterised in that：The iron
The mass fraction of iron is more than 51% in based alloy matrix, and remaining metal ingredient includes one kind in aluminium, titanium, magnesium, chromium, manganese, nickel, tin
It is or a variety of.
A kind of 3. iron-based inert anode with ferrous acid lithium diaphragm according to claim 1, it is characterised in that：The iron
The lithium layer of acid is by LiFeO2、LiFe5O8At least one of form.
4. the preparation method of iron-based inert anode described in claim 1, it is characterised in that comprise the following steps：With iron-based body or
Person's ferrous alloy matrix is anode, through electrochemical anodic oxidation in fused carbonate containing lithium, is obtained with ferrous acid lithium diaphragm
Iron-based inert anode.
5. the preparation method of iron-based inert anode according to claim 4, it is characterised in that：The fused carbonate containing lithium
Specially lithium carbonate, or the mixed salt being mixed to form by the one or more in lithium carbonate and potassium carbonate, sodium carbonate, calcium carbonate.
6. the preparation method of iron-based inert anode according to claim 5, it is characterised in that：The fused carbonate containing lithium
Specially Li2CO3-Na2CO3-K2CO3, the mol ratio of each component is followed successively by 43.5:31.5:25.
7. the preparation method of iron-based inert anode according to claim 4, it is characterised in that：Anode is melting carbonic acid containing lithium
Electrochemical anodic oxidation, electrolysis temperature control are carried out in salt by the way of permanent groove piezoelectricity solution or potentiostatic deposition or constant-current electrolysis
Between 500 DEG C -1000 DEG C, electrolysis time controls between -100 hours 4 minutes system.
8. the iron-based inert anode with ferrous acid lithium diaphragm is in the high temperature melting using carbonate as main component described in claim 1
Application in salt electrolysis system.
9. application according to claim 8, it is characterised in that：The mass fraction of carbonate is not less than 60% in fused salt, its
Remaining composition is the one or more in silicate, nitrate, chloride salt, fluoride salt, oxide salt, hydroxide salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710904417.4A CN107740143B (en) | 2017-09-29 | 2017-09-29 | Iron-based inert anode with lithium ferrite protective film and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710904417.4A CN107740143B (en) | 2017-09-29 | 2017-09-29 | Iron-based inert anode with lithium ferrite protective film and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107740143A true CN107740143A (en) | 2018-02-27 |
| CN107740143B CN107740143B (en) | 2019-12-24 |
Family
ID=61236323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710904417.4A Active CN107740143B (en) | 2017-09-29 | 2017-09-29 | Iron-based inert anode with lithium ferrite protective film and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107740143B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811368A (en) * | 2019-03-20 | 2019-05-28 | 武汉大学 | Lithium ion enhanced type inert anode and preparation method thereof for molten-salt electrolysis system |
| CN109855206A (en) * | 2019-02-22 | 2019-06-07 | 武汉大学 | A kind of intelligent air purifying oxygen replenishing method and device |
| CN109988989A (en) * | 2019-03-20 | 2019-07-09 | 武汉大学 | A kind of iron oxide basic corrosion-inhibiting coating and preparation method thereof |
| CN114709391A (en) * | 2022-04-01 | 2022-07-05 | 湖北亿纬动力有限公司 | Positive electrode lithium supplement material, preparation method thereof and lithium ion battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04147570A (en) * | 1990-10-11 | 1992-05-21 | Sumitomo Metal Mining Co Ltd | Material of air electrode for molten carbonate fuel cell |
| JP2003027211A (en) * | 2001-07-10 | 2003-01-29 | Parker Netsu Shori Kogyo Kk | Iron based parts |
| CN101527353A (en) * | 2009-03-10 | 2009-09-09 | 重庆大学 | Lithium ion battery anode composite material and manufacturing method thereof |
| CN104011904A (en) * | 2011-11-02 | 2014-08-27 | I-Ten公司 | Method for the production of thin-film lithium-ion microbatteries and resulting microbatteries |
-
2017
- 2017-09-29 CN CN201710904417.4A patent/CN107740143B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04147570A (en) * | 1990-10-11 | 1992-05-21 | Sumitomo Metal Mining Co Ltd | Material of air electrode for molten carbonate fuel cell |
| JP2003027211A (en) * | 2001-07-10 | 2003-01-29 | Parker Netsu Shori Kogyo Kk | Iron based parts |
| CN101527353A (en) * | 2009-03-10 | 2009-09-09 | 重庆大学 | Lithium ion battery anode composite material and manufacturing method thereof |
| CN104011904A (en) * | 2011-11-02 | 2014-08-27 | I-Ten公司 | Method for the production of thin-film lithium-ion microbatteries and resulting microbatteries |
Non-Patent Citations (1)
| Title |
|---|
| KAIFA DU等: "Unusual temperature effect on the stability of nickel anodes in molten carbonates", 《ELECTROCHIMICA ACTA》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855206A (en) * | 2019-02-22 | 2019-06-07 | 武汉大学 | A kind of intelligent air purifying oxygen replenishing method and device |
| CN109811368A (en) * | 2019-03-20 | 2019-05-28 | 武汉大学 | Lithium ion enhanced type inert anode and preparation method thereof for molten-salt electrolysis system |
| CN109988989A (en) * | 2019-03-20 | 2019-07-09 | 武汉大学 | A kind of iron oxide basic corrosion-inhibiting coating and preparation method thereof |
| CN109811368B (en) * | 2019-03-20 | 2021-03-16 | 武汉大学 | Lithium ion reinforced inert anode for molten salt electrolysis system and preparation method thereof |
| CN114709391A (en) * | 2022-04-01 | 2022-07-05 | 湖北亿纬动力有限公司 | Positive electrode lithium supplement material, preparation method thereof and lithium ion battery |
| CN114709391B (en) * | 2022-04-01 | 2023-08-01 | 湖北亿纬动力有限公司 | Positive electrode lithium supplementing material, preparation method thereof and lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107740143B (en) | 2019-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ijije et al. | Carbon electrodeposition in molten salts: electrode reactions and applications | |
| CA2928790C (en) | Anode for alkaline water electrolysis | |
| CN107740143A (en) | A kind of iron-based inert anode with ferrous acid lithium diaphragm and preparation method thereof, application | |
| TWI353394B (en) | Hydrogen evolving cathode | |
| CN110923776A (en) | Mixing CO2Conversion to metal carbide coating and O2Molten salt electrochemical process of | |
| Izumiya et al. | Effects of additional elements on electrocatalytic properties of thermally decomposed manganese oxide electrodes for oxygen evolution from seawater | |
| El-Meligi et al. | Hydrogen evolution reaction of low carbon steel electrode in hydrochloric acid as a source for hydrogen production | |
| Vossen et al. | Corrosion behavior of chromium in molten carbonate | |
| CN109985629B (en) | Vermicular Ni/NixFe1-xOyHydrogen evolution catalyst and preparation method thereof | |
| Xin et al. | Effect of SnO2 intermediate layer on performance of Ti/SnO2/MnO2 electrode during electrolytic-manganese process | |
| Wang et al. | Inert anode development for high-temperature molten salts | |
| Lantelme et al. | Mechanism for elemental carbon formation in molecular ionic liquids | |
| CN110257848B (en) | Molten salt electrochemical method for oxidizing methane to hydrogen and carbon monoxide at medium and low temperature | |
| CN109811368B (en) | Lithium ion reinforced inert anode for molten salt electrolysis system and preparation method thereof | |
| Wang et al. | Cathodic behavior of molten CaCl 2-CaO and CaCl 2-NaCl-CaO | |
| CN103397345B (en) | A kind of multi-layer film structure high temperature fused salt electrolysis inert anode and preparation and application thereof | |
| CN100459236C (en) | Anode material for lithium water cell and sodium water cell | |
| Dou et al. | Electrochemical preparation of the Fe-Ni36 Invar alloy from a mixed oxides precursor in molten carbonates | |
| CN110010885A (en) | Aluminium-air cell anode material and preparation method thereof | |
| Han et al. | Electrochemical evolution of hydrogen on composite La–Ni–Al/Ni–S alloy film in water electrolysis | |
| Yin et al. | Electrochemical valorization of carbon dioxide in molten salts | |
| CN102899689A (en) | Environment protection type metal refining method | |
| Fang et al. | Performance of a novel Ni/Nb cathode material for molten carbonate fuel cells (MCFC) | |
| CN110380045A (en) | A kind of magnesium-alloy anode material and its preparation method and application, magnesium air battery | |
| Yao et al. | A Liquid Alloy Anode for the Electrolytic Reduction of Uranium Oxide in Molten Lithium Chloride |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |