CN107128977A - A kind of preparation method of capacitor electrode material non-stoichiometry lanthanum manganate - Google Patents
A kind of preparation method of capacitor electrode material non-stoichiometry lanthanum manganate Download PDFInfo
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- CN107128977A CN107128977A CN201710285880.5A CN201710285880A CN107128977A CN 107128977 A CN107128977 A CN 107128977A CN 201710285880 A CN201710285880 A CN 201710285880A CN 107128977 A CN107128977 A CN 107128977A
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- 239000007772 electrode material Substances 0.000 title claims abstract description 25
- 239000003990 capacitor Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- HBAGRTDVSXKKDO-UHFFFAOYSA-N dioxido(dioxo)manganese lanthanum(3+) Chemical compound [La+3].[La+3].[O-][Mn]([O-])(=O)=O.[O-][Mn]([O-])(=O)=O.[O-][Mn]([O-])(=O)=O HBAGRTDVSXKKDO-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 239000011572 manganese Substances 0.000 claims abstract description 13
- 238000001354 calcination Methods 0.000 claims abstract description 12
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 8
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 8
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 30
- 238000001291 vacuum drying Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000004087 circulation Effects 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 13
- 229910002328 LaMnO3 Inorganic materials 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- GJKFIJKSBFYMQK-UHFFFAOYSA-N lanthanum(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O GJKFIJKSBFYMQK-UHFFFAOYSA-N 0.000 description 6
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000013019 agitation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000003980 solgel method Methods 0.000 description 3
- 235000005979 Citrus limon Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 244000248349 Citrus limon Species 0.000 description 1
- 244000131522 Citrus pyriformis Species 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/12—Manganates manganites or permanganates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/46—Metal oxides
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
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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
- Y02E60/13—Energy storage using capacitors
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Power Engineering (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a kind of high performance capacitors electrode material non-stoichiometry lanthanum manganate (LaMnx±1O3) preparation method.The nitrate of manganese and lanthanum is mixed by a certain percentage first, stirring obtains colloidal sol, and re-dry obtains xerogel, finally carry out calcination processing and obtain non-stoichiometric LaMnx±1O3.Product of the present invention is loose structure, with big specific surface area, improves energy density；LaMnx±1O3With higher oxygen vacancy concentration, improve the transmission speed of ion and electronics to enhance power density.With the lanthanum manganate (LaMnO of stoichiometry3) compare, LaMnx±1O3During as electrode material for super capacitor, with higher capacity and cyclical stability.When sweep speed is 0.5A/g, LaMn1.1O3Specific capacitance be 508F/g.When current density is 3A/g, by 1000 circulations, capacity is maintained at 75%, final stable in 250F/g or so.
Description
Technical field
The present invention relates to a kind of high performance capacitors electrode material non-stoichiometry LaMnx±1O3Preparation method, belong to super
Level capacitor electrode material preparation field.
Background technology
Ultracapacitor is widely used in number because having significant power density, cycle life and charge/discharge rate
The moments such as video camera, solar alarming lamp and electric automobile require the device of high current.However, compared with lithium ion battery, surpassing
The problem of there are low energy densities in level capacitor.Therefore, current in distress to be solved the problem of is that the energy of raising ultracapacitor is close
Degree and power density.
At present, the research of electrode material for super capacitor is concentrated mainly on carbon material, metal oxide nanoparticles and led
On electric polymer.Due to fake capacitance effect, metal oxide has attracted increasing concern in recent years.In metal oxide
In, the oxide LaMnO of perovskite structure3, because turning into preferable electrode material with performances such as high specific capacitances.However,
LaMnO3The problems such as there is low conductivity, low circulation stability in actual application.
2016《Alloy and compound magazine》Upper report utilizes Sr doping LaMnO3Increase LaMnO3It is used as ultracapacitor
The capacity and stability of electrode material.Stevenson et al. in 2014《Nature-material》Report and point out, by preparing
Oxygen nonstochiometry compound L aMnO2.91LaMnO can be improved3Electric conductivity.But above-mentioned increase LaMnO3The side of electric conductivity
Not only preparation method is complicated and costly and time-consuming for method.King shows prestige et al. in 2015 in patent《A kind of ultracapacitor
Material LaMnO3Preparation method》Middle utilization sol-gel process is prepared for LaMnO3, technical process is simplified, cost is controlled.
Therefore, on the basis of forefathers, we utilize sol-gel process, by adjusting the molar ratio of lanthanum and manganese, to adjust
Save Mn3+/Mn4+Ratio, so as to be prepared for cation non-stoichiometric compound LaMnx±1O3, when it is used as ultracapacitor
Electrode material when not only increase specific capacitance and also improve cyclical stability.
The content of the invention
Technical problem：It is an object of the invention to provide a kind of system of electrode material for super capacitor non-stoichiometry lanthanum manganate
Preparation Method, by preparing the non-stoichiometric compound LaMn with porous patternx±1O3(0.1) x=0.0 0.05 and improves
The specific surface area and oxygen vacancy concentration of product are so as to improve LaMnO3Electric conductivity, make its be applied to electrode of super capacitor material
During material, the capacity and cyclical stability of ultracapacitor can be improved.
Technical scheme：A kind of preparation method of electrode material for super capacitor non-stoichiometry lanthanum manganate of the present invention includes
Following steps：
Step 1: the nitrate and citric acid of manganese and lanthanum is soluble in water, stirring, is mixed into colloidal sol, wherein lemon
Lemon acid mole is the half of nitrate ion mole；
3~6 hours are heated to gel state Step 2: the colloidal sol in step one is placed in 60 DEG C~80 DEG C of water-bath,
It is subsequently placed in 120 DEG C~160 DEG C of vacuum drying chamber and dries 6-8 hours, obtains brown xerogel；
Step 3: will the product that obtained in step 2 grind after calcination processing is carried out in tube furnace, prior to 300 DEG C~
400 DEG C are heated 5~20 minutes, and grinding, then at 600 DEG C~800 DEG C calcinations 3~6 hours, obtains the super electricity of Ca-Ti ore type mangaic acid lanthanum
Container electrode material.
Wherein, the manganese in step one and lanthanum molar ratio are respectively 0.80~1.30:1, obtain non-stoichiometry lanthanum manganate
LaMnx±1O3。
Beneficial effect：
1st, the present invention uses sol-gel process, and technique is simple and easy to control, and cost is low, and the material property of preparation is good.
2nd, product of the invention has loose structure, makes it have lower density, high porosity and great ratio
Surface area, adds the contact area of active material and electrolyte, improves electrode reaction dynamic performance.
3rd, the present invention is by controlling the content of manganese to control Mn4+/Mn3+Ratio and oxygen vacancy concentration make product have a little
Defect, obtained LaMnx±1O3With higher specific capacity and cyclical stability.
Brief description of the drawings
Fig. 1 is non-stoichiometric compound LaMn produced by the present inventionx±1O3(x=0.0,0.05 and 0.1) ultracapacitor
The ICP collection of illustrative plates of electrode material.
Fig. 2 is non-stoichiometric compound LaMn produced by the present invention1.1O3The transmission electron microscope of electrode material for super capacitor
Figure.
Fig. 3 is electrode material for super capacitor non-stoichiometric compound LaMn produced by the present invention0.9O3, LaMnO3,
LaMn1.1O3Specific capacitance with sweep speed variation diagram.
Fig. 4 is the electrode material for super capacitor non-stoichiometric compound LaMn that the embodiment of the present invention 1 is obtained1.1O3's
Cycle performance figure.
Embodiment
The non-stoichiometric compound LaMn of the present inventionx±1O3(x=0.0,0.05 and preparation method 0.1) it is as follows：
Step 1: lanthanum nitrate hexahydrate, manganese nitrate and Citric Acid Mono are added dropwise in the beaker for filling water successively, then will
The mol ratio of above-mentioned mixed solution stirring, citric acid and nitric acid is 1:2.Change Mn/La molar ratios, be respectively：0.9:1、
0.95:1、1:1、1.05:1、1.1:1；
Heated Step 2: the beaker that colloidal sol is filled in step one is placed in 80 DEG C of water-bath, persistently stir 4h, obtain
Gel.Product is put in the dry 8h of 140 DEG C of vacuum drying chamber after end, xerogel is obtained；
Calcination processing is carried out Step 3: the brown xerogel obtained in step 2 is placed in tube furnace, first at 350 DEG C
Preheating 10min makes its spontaneous combustion, and the calcination 4h in 700 DEG C obtains electrode material for super capacitor non-stoichiometry chemical combination
Thing LaMnx±1O3(x=0.0,0.05 and 0.1).
Further illustrate the present invention referring to the drawings and with reference to following embodiments.It should be understood that drawings and Examples are all only examples
Property, not for the limitation present invention.
Embodiment 1
(1) 26.846g lanthanum nitrate hexahydrates are weighed, are added under magnetic agitation effect in 20mL water.Then, weigh
12.2044g manganese nitrate (Mn/La molar ratio=1.1) is added in above-mentioned solution, stirs 2h, equal to ensure to obtain mixing
Even nitrate mixture.Then 10.4mL citric acid (15.5mol/L) is added dropwise.
(2) above-mentioned mixed solution is placed in 80 DEG C of water-bath, is stirred vigorously 4h, evaporate unnecessary moisture, until
To brown gel.Obtained colloidal sol-gel is transferred in vacuum drying chamber, in 140 DEG C of dry 8h.
(3) xerogel that above-mentioned steps are obtained is put into agate mortar and ground, be then transferred in tube furnace, be preheated to
10 minutes are incubated in 350 DEG C.By after the powder mull of burning in tube furnace under air atmosphere 750 DEG C calcining 4h.Obtain
LaMn1.1O3。
Embodiment 2
(1) 26.846g lanthanum nitrate hexahydrates are weighed, are added under magnetic agitation effect in 20mL water.Then, weigh
11.6496g manganese nitrate (Mn/La molar ratio=1.05) is added in above-mentioned solution, stirs 2h, equal to ensure to obtain mixing
Even nitrate mixture.Then 10.2mL citric acid (15.5mol/L) is added dropwise.
(2) above-mentioned mixed solution is placed in 80 DEG C of water-bath, is stirred vigorously 4h, evaporate unnecessary moisture, until
To brown gel.Obtained colloidal sol-gel is transferred in vacuum drying chamber, in 140 DEG C of dry 8h.
(3) xerogel that above-mentioned steps are obtained is put into agate mortar and ground, be then transferred in tube furnace, be preheated to
10 minutes are incubated in 350 DEG C.By after the powder mull of burning in tube furnace under air atmosphere 750 DEG C calcining 4h.Obtain
LaMn1.05O3。
Embodiment 3
(1) 26.846g lanthanum nitrate hexahydrates are weighed, are added under magnetic agitation effect in 20mL water.Then, weigh
11.0949g manganese nitrate (Mn/La molar ratio=1.00) is added in above-mentioned solution, stirs 2h, equal to ensure to obtain mixing
Even nitrate mixture.Then 10.0mL citric acid (15.5mol/L) is added dropwise.
(2) above-mentioned mixed solution is placed in 80 DEG C of water-bath, is stirred vigorously 4h, evaporate unnecessary moisture, until
To brown gel.Obtained colloidal sol-gel is transferred in vacuum drying chamber, in 140 DEG C of dry 8h.
(3) xerogel that above-mentioned steps are obtained is put into agate mortar and ground, be then transferred in tube furnace, be preheated to
10 minutes are incubated in 350 DEG C.By after the powder mull of burning in tube furnace under air atmosphere 750 DEG C calcining 4h.Obtain
LaMnO3。
Embodiment 4
(1) 26.846g lanthanum nitrate hexahydrates are weighed, are added under magnetic agitation effect in 20mL water.Then, weigh
10.5402g manganese nitrate (Mn/La molar ratio=0.95) is added in above-mentioned solution, stirs 2h, equal to ensure to obtain mixing
Even nitrate mixture.Then 9.8mL citric acid (15.5mol/L) is added dropwise.
(2) above-mentioned mixed solution is placed in 80 DEG C of water-bath, is stirred vigorously 4h, evaporate unnecessary moisture, until
To brown gel.Obtained colloidal sol-gel is transferred in vacuum drying chamber, in 140 DEG C of dry 8h.
(3) xerogel that above-mentioned steps are obtained is put into agate mortar and ground, be then transferred in tube furnace, be preheated to
10 minutes are incubated in 350 DEG C.By after the powder mull of burning in tube furnace under air atmosphere 750 DEG C calcining 4h.Obtain
LaMn0.95O3。
Embodiment 5
(1) 26.846g lanthanum nitrate hexahydrates are weighed, are added under magnetic agitation effect in 20mL water.Then, weigh
9.9854g manganese nitrate (Mn/La molar ratio=0.90) is added in above-mentioned solution, stirs 2h, equal to ensure to obtain mixing
Even nitrate mixture.Then 9.6mL citric acid (15.5mol/L) is added dropwise.
(2) above-mentioned mixed solution is placed in 80 DEG C of water-bath, is stirred vigorously 4h, evaporate unnecessary moisture, until
To brown gel.Obtained colloidal sol-gel is transferred in vacuum drying chamber, in 140 DEG C of dry 8h.
(3) xerogel that above-mentioned steps are obtained is put into agate mortar and ground, be then transferred in tube furnace, be preheated to
10 minutes are incubated in 350 DEG C.By after the powder mull of burning in tube furnace under air atmosphere 750 DEG C calcining 4h.Obtain
LaMn0.9O3。
Fig. 1 is non-stoichiometric compound LaMn produced by the present inventionx±1O3(x=0.0,0.05 and 0.1) ultracapacitor
The ICP collection of illustrative plates of electrode material.As can be seen from the figure Mn/La measured value is close with theoretical value, it may be determined that product LaMnx± 1O3Middle Mn/La ratio is 0.90,0.95,1.00,1.05,1.10.
Fig. 2 is non-stoichiometric compound LaMn produced by the present invention1.1O3The transmission electron microscope of electrode material for super capacitor
Figure.Known by Fig. 2, products therefrom is loose structure, nanoparticle size is 20-70nm.
Fig. 3 is electrode material for super capacitor non-stoichiometric compound LaMn produced by the present invention0.9O3, LaMnO3,
LaMn1.1O3Specific capacitance with sweep speed variation diagram, LaMn under same scan speed1.1O3Specific capacitance highest, in sweep speed
During for 0.5A/g, LaMn1.1O3Specific capacitance be 508F/g.
Fig. 4 is the electrode material for super capacitor non-stoichiometric compound LaMn that the embodiment of the present invention 1 is obtained1.1O3's
Cycle performance figure, current density is 3A/g.By 1000 circulations, capacity is maintained at 75%, final stable in 250F/g or so.
Claims (2)
1. a kind of preparation method of electrode material for super capacitor non-stoichiometry lanthanum manganate, it is characterised in that this method include with
Lower step：
Step 1: the nitrate and citric acid of manganese and lanthanum is soluble in water, stirring, is mixed into colloidal sol, wherein citric acid
Mole is the half of nitrate ion mole；
3~6 hours are heated to gel state Step 2: the colloidal sol in step one is placed in 60 DEG C~80 DEG C of water-bath, then
It is placed in 120 DEG C~160 DEG C of vacuum drying chamber and dries 6-8 hours, obtains brown xerogel；
Step 3: calcination processing is carried out in tube furnace after the product obtained in step 2 is ground, prior to 300 DEG C~400 DEG C
Heating 5~20 minutes, grinding, then at 600 DEG C~800 DEG C calcinations 3~6 hours, obtains Ca-Ti ore type mangaic acid lanthanum ultracapacitor
Electrode material.
2. the preparation method of electrode material for super capacitor according to claim 1, it is characterised in that the manganese in step one
It is respectively 0.80~1.30 with lanthanum molar ratio:1, obtain non-stoichiometry lanthanum manganate LaMnx±1O3。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987125A (en) * | 2018-08-13 | 2018-12-11 | 云南大学 | Ca-Ti ore type stannate electrode material for super capacitor with high-specific capacitance super and preparation method thereof |
| CN109850987A (en) * | 2019-01-29 | 2019-06-07 | 闽江学院 | Utilize the method for lanthanum manganate catalysis II waste water of ultrasonic degradation organic dyestuff gold orange |
| CN110033958A (en) * | 2019-03-13 | 2019-07-19 | 浙江理工大学 | LaMnO3Base composite and flexible electrode material, preparation method and application |
| CN113808856A (en) * | 2021-08-13 | 2021-12-17 | 常州大学 | Honeycomb-shaped LaMnO3Preparation method of super capacitor |
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| CN104876276A (en) * | 2015-04-20 | 2015-09-02 | 河南师范大学 | Preparation method of supercapacitor electrode material LaMnO3 |
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