CN106952747A - A kind of preparation method of high power capacity self-supporting manganese dioxide/carbon combination electrode - Google Patents
A kind of preparation method of high power capacity self-supporting manganese dioxide/carbon combination electrode Download PDFInfo
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- CN106952747A CN106952747A CN201710188883.7A CN201710188883A CN106952747A CN 106952747 A CN106952747 A CN 106952747A CN 201710188883 A CN201710188883 A CN 201710188883A CN 106952747 A CN106952747 A CN 106952747A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G11/24—Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G11/32—Carbon-based
- H01G11/44—Raw materials therefor, e.g. resins or coal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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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- 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
Abstract
The invention belongs to electrochemical technology field, and in particular to a kind of preparation method of high power capacity self-supporting manganese dioxide/carbon combination electrode.The preparation method is：Manganese sulfate and water-soluble structure stabilizer are dissolved in aqueous sulfuric acid formation mixed solution first, the radius of the metal cation of the water-soluble structure stabilizer is 1~1.52 × 10‑10m；Then from the clean carbonaceous material of surface cleaning as anode, using step one gained mixed solution as electrolyte, below 15 DEG C, oxidizing and electrochemical deposition manganese dioxide is carried out in anode, semi-finished product are obtained, when carrying out anodic oxidation electrochemical deposition, control anode potential is more than or equal to 0.14V；Then semi-finished product are placed in the solution containing water-soluble structure stabilizer, carry out hydro-thermal reaction in 120 200 DEG C, obtain the high power capacity self-supporting manganese dioxide/carbon combination electrode.Preparation technology of the present invention is simple, products obtained therefrom function admirable, is easy to industrialization production.
Description
Technical field
The invention belongs to electrochemical technology field, and in particular to a kind of high power capacity self-supporting manganese dioxide/carbon combination electrode
Preparation method.
Technical background
Ultracapacitor is a kind of new ideas energy storage device between battery and conventional electrostatic container, with aluminium electricity
The conventional electrostatic capacitor such as electrolysis condenser is compared, and ultracapacitor has higher specific capacitance, and storable energy density is biography
More than 10 times of system electrostatic condenser；And compared with battery, ultracapacitor has bigger power density, and with discharge and recharge
Efficiency high, the characteristic such as have extended cycle life.Due to many superiority with more than, the exploitation of supercapacitor technologies is constantly subjected to
The most attention of academia, industrial circle and military service, and gradually in electronic instrument back-up source and rocket, guided missile, artificial
It is applied in terms of the point starting ignition power supply of satellite, spaceship space station etc., the super high power electricity of wherein starting ignition
Container can provide MW grades of especially big startup power.
Compared with battery, the subject matter that ultracapacitor is faced is energy density than relatively low.In order to improve super electricity
The performance of container, i.e., keep the advantages such as its big specific power rate, around with electric double layer capacitance and farad while specific energy is improved
The research of the transition metal oxide electrode of fake capacitance behavior receives much concern.RuO2Electrode material for super capacitor is used as Z
High-power discharge and recharge can not only be realized, while specific energy is also higher, but its high cost and be difficult to obtain in civilian industry
Obtain business promotion.In order to seek cheap electrode material for super capacitor, around NiO, Co3O4、V2O5、MnO2Deng oxo transition metal
The preparation of compound material and Electrochemical Properties are deployed in succession.Wherein MnO2Due to high, the aboundresources with theoretical specific capacitance
The advantages of paid attention to.But the reasons such as the electron conduction difference due to material, the MnO of actual synthesis2Specific capacitance is not high.For
This, the material and suitable carbon material are mainly combined by people, and the electronics inside electrode material is provided by carbon skeleton
Passage, so as to improve the electronic conductance performance of whole electrode.But most research be all be prepared into first the carbon of powder morphology/
Manganese dioxide composite material, then apply to invest after these powder body materials are mixed with binding agent electrode is prepared on collector, this just holds
Easily cause loose contact between electrode active material and collector and influence the charge-discharge performance of electrode.In addition, by being electrolysed sulphur
Sour manganese solution prepares manganese dioxide on different carbon skeleton surfaces, so as to prepare the manganese dioxide/carbon without binding agent, self-supporting
Combination electrode is current study hotspot, but from the point of view of the situation of report, the emphasis of these research work be all concentrated mainly on as
What is prepared on different carbon skeletons, and carbon skeleton superficial silicon dioxide manganese itself mechanism is not controlled, mainly using normal
The process of preparing of rule electrolytic manganese dioxide prepares manganese dioxide on carbon skeleton, i.e., mainly by being electrolysed two at normal temperatures
Manganese oxide aqueous solution γ type manganese dioxide.Clearly as the internal tunnel structure of γ type manganese dioxide is 1 × 2 or 1 × 1 type tunnel
Road, this is unfavorable for the transmission of electrode material charged ion balance in charge and discharge process, influences the capacitive property of material.
The content of the invention
The invention aims to provide a kind of preparation method of high power capacity self-supporting manganese dioxide/carbon combination electrode.
A kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode of the present invention, comprises the steps：
Step one
Manganese sulfate and water-soluble structure stabilizer are dissolved in aqueous sulfuric acid formation mixed solution；The water-soluble structure
Stabilizer is the sulfate with metal cation；The radius of the metal cation is 1~1.52 × 10-10m；
Step 2
From the clean carbonaceous material of surface cleaning as anode, electrolyte is used as using step one gained mixed solution；
Less than 15 DEG C, oxidizing and electrochemical deposition manganese dioxide is carried out in anode, semi-finished product are obtained；Carry out anodic oxidation electrochemical deposition
When, control anode potential is more than or equal to 0.14V, and the anode potential is the potential relative to Mercurous sulfate electrode；
Step 3
Semi-finished product obtained by step 2 are placed in the solution containing water-soluble structure stabilizer, water-filling is entered in 120-200 DEG C
Thermal response；Obtain the high power capacity self-supporting manganese dioxide/carbon combination electrode.
Preferably, a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode of the present invention, step
First, the institute of water-soluble structure stabilizer described in step 3 band metal cation is selected from Ce3+、La3+、K+、Rb+It is at least one.
Preferably, a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode of the present invention, step
In one, the concentration of sulfuric acid is 0.5~3mol/L in the mixed solution, the concentration of the water-soluble structure stabilizer for 0.01~
0.1mol/L, the manganese sulfate concentration is 0.1~1mol/L.
A kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode of the present invention, by surface cleaning processing,
Obtain the clean carbonaceous material of surface cleaning.
Preferably, a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode of the present invention, step
In two, when anode carries out oxidizing and electrochemical deposition manganese dioxide, the temperature for controlling electrolyte is 5~15 DEG C.
A kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode of the present invention, carries out anodic oxidation electrification
When learning deposition, it can be carried out using a variety of electrochemical deposition methods；Preferably pulse, constant pressure or constant current co-electrodeposition method.
Preferably, a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode of the present invention, step
In three, the time of hydro-thermal reaction is preferably 8-24 hours.
Preferably, a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode of the present invention, step
In three, the solution containing water-soluble structure stabilizer is the solution that solute is water-soluble structure stabilizer；The solute is water-soluble
Property structural stabilizing agent solution in, the concentration of water-soluble structure stabilizer is 0.02~0.2mol/L.
Preferably, a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode of the present invention, step
Mn in gained high power capacity self-supporting manganese dioxide/carbon combination electrode in three4+/Mn3+Ratio be 1-5:1, more preferably
2.5~5:1.
Preferably, a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode of the present invention, gained
In high power capacity self-supporting manganese dioxide/carbon combination electrode, manganese dioxide is the α type manganese dioxide with 2 × 2 tunnel structures.
Principle and advantage
The present invention in the direct electro-deposition manganese dioxide in carbon skeleton surface by preparing self-supporting manganese dioxide/carbon compound electric
Pole, by added into electrodeposit liquid manganese dioxide structure stabiliser salt and at low temperature progress anodic oxidation electro-deposition to control
The structure of manganese dioxide, obtains the α type manganese dioxide with 2 × 2 tunnel structures, improves charged ion balance in manganese dioxide material
Diffusion in material.The stability for improving material crystal structure is handled by follow-up hydrothermal simultaneously, and Mn in material can be adjusted4 +/Mn3+Ratio, and then optimize charge and discharge process in electrode reaction resistance, so as to improve its capacitive property.
The present invention is electrolysed the manganese sulfate solution containing high sulfuric acid concentration at low temperature, coordinates stabilizer, hydro-thermal process, obtains
Unexpected effect.It is in particular in：Using carbon paper as carbon source, manganese dioxide obtained by under the synergy of other conditions/
Carbon composite electrode its capability retention when sweep speed brings up to 200mV is also greater than 60%.
Compared with existing preparation technology, technical thought and technological principle of the invention has outstanding feature and technology excellent
Gesture：
(1) present invention proposes heavy by anodic oxidation electricity from sulfur acid manganese, sulfuric acid and structural stability mixed salt solution
Product α type manganese dioxide；
(2) by carrying out hydro-thermal process in the aqueous solution of the salt containing structural stability, the knot in material tunnel is on the one hand improved
Structure stability, while adjusting the composition of different valence state manganese, optimizes the electrode reaction resistance of material；
(3) combined by anodic electrodeposition with hydro-thermal method, the self-supporting manganese dioxide/carbon combination electrode of preparation has suitably
2 × 2 tunnel structures and the manganese composition spread in charged ion balance, with high specific capacitance feature.
(4) manganese dioxide/carbon combination electrode of the present invention using carbon paper as carbon source when sweep speed brings up to 200mV its
Capability retention is also greater than 60%；Its performance is (compound using carbon paper as the manganese dioxide/carbon of carbon source far beyond like product
Electrode).After carbon source is changed, its performance is also superior to like product.
Brief description of the drawings
Accompanying drawing 1 is the circulation volt under 2mV/s using the manganese dioxide/carbon combination electrode prepared by the embodiment of the present invention 1
Pacify curve map；
Accompanying drawing 2 is the circulation under 200mV/s using the manganese dioxide/carbon combination electrode prepared by the embodiment of the present invention 1
Volt-ampere curve figure；
1 curve can calculate specific capacitance and high rate performance of the electrode material under 2mV/s with reference to the accompanying drawings.
2 curve can calculate specific capacitance and high rate performance of the electrode material under 200mV/s with reference to the accompanying drawings.With reference to Fig. 1's
Capability retention can be drawn by calculating data.
Specific embodiment
Unless otherwise defined, the implication that all technical terms used hereinafter are generally understood that with those skilled in the art
It is identical.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to the limitation present invention
Protection domain.
Except there is a special instruction, the various reagents used in the present invention, raw material be can be commercially commodity or
Person can pass through product made from known method.
The embodiment of the present invention is as follows：
Embodiment 1
Prepare and contain MnSO4And CeSO4With the mixed aqueous solution of sulfuric acid, the concentration of manganese sulfate is 0.5mol/L in mixed solution,
Sulfuric acid cerium concentration is 0.01mol/L, and sulfuric acid concentration is 0.5mol/L.Carbon paper is cut into area for 4 × 1cm2Carbon paper band conduct
Collector, carries out ultrasonic washing to the collector with 10% aqueous sulfuric acid and acetone successively, and final rinse water is simultaneously dried.
It is 4 × 4cm with area2Titanium net electrode be to electrode, above-mentioned mixed solution be electrodeposit liquid, the collector after surface clean
For anode, (work area is 1 × 1cm2), constant current anode oxidation electro-deposition is carried out, electrodeposit liquid temperature is 5 DEG C, current density
4mA/cm2, electrodeposition time is 2 minutes.Gained manganese dioxide/carbon combination electrode is cleaned after the completion of electro-deposition, is put into
Equipped with 0.02mol/L CeSO48 hours are incubated in the autoclave of the aqueous solution and at 200 DEG C, is taken out after autoclave drops to room temperature
Combination electrode, required combination electrode is obtained after most rinsing and dry through water afterwards.Mn in combination electrode4+/Mn3+Ratio be 4.9:
1；
It is electrolyte with 0.5mol/L aqueous sodium persulfate solution, the manganese oxide composite electrodes of above-mentioned preparation are working electrode,
Area is 4 × 4cm2Platinum electrode for auxiliary electrode assembling three-electrode system, be circulated volt-ampere test, test potential scope
For -0.4~0.4V (relative to Mercurous sulfate electrode), sweep speed is 2mV/s and 200mV/s.According to cyclic voltammetry curve meter
It is 359.5F/g to calculate specific capacitance of the electrode active material under 2mV/s, and cyclic voltammetry curve is still when sweep speed brings up to 200mV
So keep approximate rectangular, capability retention is 60.8%.
Comparative example 1
Other conditions are consistent with embodiment 1, and simply electrolyte is the mixed solution of common manganese sulfate and sodium sulphate, sulfuric acid
The concentration of manganese and sodium sulphate is 0.5mol/L, and the temperature of electrodeposit liquid is room temperature (25 DEG C), by manganese dioxide obtained by electro-deposition
Electrode is directly circulated volt-ampere test, specific capacitance of the electrode active material under 2mV/s in its gained manganese oxide composite electrodes
Only 262F/g, cyclic voltammetry curve is shaped as spindle when sweep speed brings up to 200mV, and capability retention is 25.8%..
Comparative example 2
Other conditions are consistent with embodiment 1, and simply electrolyte is the mixed solution of common manganese sulfate and sodium sulphate, sulfuric acid
The concentration of manganese and sodium sulphate is 0.5mol/L, and the temperature of electrodeposit liquid is room temperature (25 DEG C), by manganese dioxide obtained by electro-deposition
Electrode carries out hydro-thermal process in 0.02mol/L metabisulfite solutions, and electrode active material exists in its gained manganese oxide composite electrodes
Specific capacitance under 2mV/s is only 249F/g, and cyclic voltammetry curve shape is maintained as approximate square when sweep speed brings up to 200mV
Shape, capability retention is 42.8%.
Embodiment 2
Operating process be the same as Example 1, the lanthanum sulfate simply used replaces the concentration of lanthanum sulfate in cerous sulfate, mixed solution to be
0.05mol/L, sulfuric acid concentration is 1mol/L.The concentration of lanthanum sulfate is 0.1mol/L, hydro-thermal process temperature in hydro-thermal process solution
For 180 DEG C, hydrothermal conditions obtained Mn in combination electrode, combination electrode for 12 hours4+/Mn3+Ratio be 3.7:1；
Specific capacitance of the electrode obtained active material under 2mV/s is 330.2F/g, and sweep speed is circulated when bringing up to 200mV
Volt-ampere curve remains in that approximate rectangular, and capability retention is 64.1%.
, embodiment 3
Operating process be the same as Example 1, the potassium sulfate simply used replaces the concentration of potassium sulfate in cerous sulfate, mixed solution to be
0.1mol/L, sulfuric acid concentration is 3mol/L.The concentration of potassium sulfate is 0.2mol/L in hydro-thermal process solution, and hydro-thermal process temperature is
120 DEG C, hydrothermal conditions are 24 hours, obtain Mn in combination electrode, combination electrode4+/Mn3+Ratio be 4.8:1；
Specific capacitance of the electrode obtained active material under 2mV/s is 351.2F/g, and sweep speed is circulated when bringing up to 200mV
Volt-ampere curve remains in that approximate rectangular, and capability retention is 60.2%.
Comparative example 3
Other uniform embodiments 3 of condition are completely the same, and difference is that the concentration of lanthanum sulfate in hydro-thermal process solution is
Specific capacitance of the electrode active material under 2mV/s is only 235F/g in 0.3mol/L, its gained manganese oxide composite electrodes, scanning speed
Cyclic voltammetry curve remains in that approximate rectangular when rate brings up to 200mV, and capability retention is 62.1%.
Embodiment 4
Operating process be the same as Example 1, the rubidium sulfate simply used replaces the concentration of rubidium sulfate in cerous sulfate, mixed solution to be
0.08mol/L, sulfuric acid concentration is 2mol/L.The concentration of rubidium sulfate is 0.05mol/L, hydro-thermal process temperature in hydro-thermal process solution
For 150 DEG C, hydrothermal conditions obtained Mn in combination electrode, combination electrode for 20 hours4+/Mn3+Ratio be 2.6:1；
Specific capacitance of the electrode obtained active material under 2mV/s is 305.2F/g, and sweep speed is circulated when bringing up to 200mV
Volt-ampere curve remains in that approximate rectangular, and capability retention is 65.3%.
Except above-described embodiment and contrast make an exception, the present invention have also been attempted during technical research and use MnCl2And Mn
(NO3)2；But use MnCl2When, manganese ion chlorion in anodic oxidation same can influence electrode material in anodic oxidation
Performance, and release chlorine simultaneously；Use Mn (NO3)2Then nitrate anion in cathodic reduction and can make to generate manganous hydroxide in solution, together
When can also discharge nitrogen oxides toxic gas.The performance of its products obtained therefrom is well below embodiment of the present invention products obtained therefrom.
Claims (9)
1. a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode, it is characterised in that comprise the steps：
Step one
Manganese sulfate and water-soluble structure stabilizer are dissolved in aqueous sulfuric acid formation mixed solution；The water-soluble structure is stable
Agent is the sulfate with metal cation；The radius of the metal cation is 1~1.52 × 10-10m；
Step 2
From the clean carbonaceous material of surface cleaning as anode, electrolyte is used as using step one gained mixed solution；At 15 DEG C
Hereinafter, oxidizing and electrochemical deposition manganese dioxide is carried out in anode, obtains semi-finished product；When carrying out anodic oxidation electrochemical deposition, control
Anode potential processed is more than or equal to 0.14V, and the anode potential is the potential relative to Mercurous sulfate electrode；
Step 3
Semi-finished product obtained by step 2 are placed in the solution containing water-soluble structure stabilizer, it is anti-to carry out hydro-thermal in 120-200 DEG C
Should；Obtain the high power capacity self-supporting manganese dioxide/carbon combination electrode.
2. a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode according to claim 1；Its feature
It is：Step 1: the institute of water-soluble structure stabilizer described in step 3 band metal cation is selected from Ce3+、La3+、K+、Rb+At least
It is a kind of.
3. a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode according to claim 1；Its feature
It is：In step one, in the mixed solution concentration of sulfuric acid be 0.5~3mol/L, the water-soluble structure stabilizer it is dense
Spend for 0.01~0.1mol/L, the manganese sulfate concentration is 0.1~1mol/L.
4. a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode according to claim 1；Its feature
It is：In step 2, when anode carries out oxidizing and electrochemical deposition manganese dioxide, the temperature for controlling electrolyte is 5~15 DEG C.
5. a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode according to claim 1；Its feature
It is：In step 3, the time of hydro-thermal reaction is preferably 8-24 hours.
6. a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode according to claim 1；Its feature
It is：In step 3, the solution containing water-soluble structure stabilizer is the solution that solute is water-soluble structure stabilizer；It is described molten
Matter is in the solution of water-soluble structure stabilizer, the concentration of water-soluble structure stabilizer is 0.02~0.2mol/L.
7. a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode according to claim 1；Its feature
It is：Mn in gained high power capacity self-supporting manganese dioxide/carbon combination electrode in step 34+/Mn3+Ratio be 1-5:1.
8. a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode according to claim 1；Its feature
It is：In gained high power capacity self-supporting manganese dioxide/carbon combination electrode, manganese dioxide is the α types two with 2 × 2 tunnel structures
Manganese oxide.
9. a kind of method for preparing high power capacity self-supporting manganese dioxide/carbon combination electrode according to claim 1；Its feature
It is：When carbonaceous material used is carbon paper in step 2, its gained high power capacity self-supporting manganese dioxide/carbon combination electrode is being swept
Its capability retention is also greater than 60% when retouching speed for 200mV.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630449A (en) * | 2018-05-18 | 2018-10-09 | 同济大学 | Flexible asymmetric super-capacitor and preparation method thereof with ultra high energy density |
| CN109887761A (en) * | 2019-01-30 | 2019-06-14 | 绍兴文理学院 | A kind of preparation of Al doping Mn-O compoiste material and the test method of chemical property |
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| US20080193847A1 (en) * | 2007-02-14 | 2008-08-14 | Tosoh Corporation | Electrolytic manganese dioxide, and method for its production and its application |
| CN102938331A (en) * | 2012-10-11 | 2013-02-20 | 吉林大学 | Foam nickel-base MnO2/C composite electrode material and preparation method thereof |
| CN106098395A (en) * | 2016-06-02 | 2016-11-09 | 中南大学 | A kind of manganese dioxide fiber electrode and its preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080193847A1 (en) * | 2007-02-14 | 2008-08-14 | Tosoh Corporation | Electrolytic manganese dioxide, and method for its production and its application |
| CN102938331A (en) * | 2012-10-11 | 2013-02-20 | 吉林大学 | Foam nickel-base MnO2/C composite electrode material and preparation method thereof |
| CN106098395A (en) * | 2016-06-02 | 2016-11-09 | 中南大学 | A kind of manganese dioxide fiber electrode and its preparation method and application |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630449A (en) * | 2018-05-18 | 2018-10-09 | 同济大学 | Flexible asymmetric super-capacitor and preparation method thereof with ultra high energy density |
| CN108630449B (en) * | 2018-05-18 | 2019-12-27 | 同济大学 | Flexible asymmetric super capacitor with ultrahigh energy density and preparation method thereof |
| CN109887761A (en) * | 2019-01-30 | 2019-06-14 | 绍兴文理学院 | A kind of preparation of Al doping Mn-O compoiste material and the test method of chemical property |
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