CN108878900A - A kind of preparation method of the modified carbon felt of nitrogen-doped graphene - Google Patents
A kind of preparation method of the modified carbon felt of nitrogen-doped graphene Download PDFInfo
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- CN108878900A CN108878900A CN201810633854.1A CN201810633854A CN108878900A CN 108878900 A CN108878900 A CN 108878900A CN 201810633854 A CN201810633854 A CN 201810633854A CN 108878900 A CN108878900 A CN 108878900A
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- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
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- H—ELECTRICITY
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- H01M4/8867—Vapour deposition
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- H—ELECTRICITY
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Abstract
The present invention relates to vanadium redox battery (VRB) to use electrode Material Field, the preparation method of the modified carbon felt of specifically a kind of high-performance nitrogen-doped graphene suitable for vanadium redox battery solves at this stage the problems such as vanadium cell is poor with commercialization carbon felt electrode conductivity, specific surface area is low, electro-chemical activity is low, vanadium ion is electric low and at high cost to catalytic performance difference and monocell performance.The present invention, using the method for chemical vapor deposition (CVD), prepares the modified carbon felt of nitrogen-doped graphene to be commercialized carbon felt as raw material.Compound carbon felt prepared by the present invention has many advantages, such as good conductivity, high-specific surface area, good electrochemical catalysis performance, superior chemical stability and good VRB battery performance and low cost.Preparation method of the invention have operation is simple, low cost product is easy to industrialization production and advantages of environment protection, can be widely used in vanadium redox battery field.
Description
Technical field：
The present invention relates to vanadium redox battery (VRB) to use electrode Material Field, specifically a kind of to be suitable for entirely
The preparation method of the modified carbon felt of the high-performance nitrogen-doped graphene of vanadium oxide reduction flow battery.
Background technique：
With the rapid growth and rapid development of economy of population in the world, energy crisis is got worse.Tapping a new source of energy is
Solve the effective way of energy crisis.Renewable and clean energy resource is because environmental-friendly and sustainability is current scientific research and work
The hot spot of industry exploitation.The shortcomings that renewable energy power generations process such as wind energy and solar energy shows discontinuity and unstability.
Thus, it would be highly desirable to the extensive energy storage technology of exploitation efficiently, environmentally friendly, inexpensive and safe and reliable.Vanadium redox battery
(VRB) excellent because its power and energy are independent, design simple and flexible, have extended cycle life, can be quickly charged and discharged, operating cost is low etc.
Point, and it is widely used in the extensive energy storage device of wind energy, solar power generation process.Meanwhile VRB is also power station in recent years
The extensive energy storage technology that the fields such as energy storage, peak load regulation network are tried out extensively.However, at present vanadium cell commercialization progress by height at
This restriction.Wherein, electrode material is the key factor for determining pile cost height.A kind of electrode material suitable for vanadium cell
Should have excellent conductivity, high-specific surface area, superior electro-chemical activity and it is low in cost the advantages that.Traditional metal materials electricity
The electrochemical reversibility of pole is poor, and is easily passivated by acidic electrolysis bath；Although and the noble metals such as platinum, iridium have electro-chemical activity it is high,
Catalytic performance is good and good chemical stability, but this kind of material price is expensive, restricts its large-scale application in vanadium cell.
At this stage, the most widely used electrode material used of vanadium cell is Carbon materials, such as：Graphite felt, graphite, carbon cloth and carbon fiber
Deng.However, that there are conductivity in this kind of direct application process of carbon material is low, electro-chemical activity difference and battery performance difference etc. are asked
Topic.In consideration of it, processing must be modified to such carbon-based material, to improve the conductivity and electro-chemical activity of electrode.By
Currently, being still able to solve these critical issues without a kind of appropriate method.
Summary of the invention:
The purpose of the present invention is to overcome the deficiency in the prior art, provides a kind of nitrogen-doped graphene suitable for vanadium cell and changes
Property carbon felt preparation method, solve carbon felt conductivity existing in the prior art is poor, chemical activity is low, specific surface area is low, stablize
Property it is poor, in VRB vanadium ion electricity to catalytic performance difference and the problems such as cause VRB monocell performance low and at high cost.Using this
Method can get the compound carbon felt of low-cost and high-performance, and with conductivity height, specific surface area is high, electro-chemical activity is high, to vanadium
Ionic catalysis performance is good, stability is good and VRB battery applications in performance it is good the advantages that.
The technical scheme is that：
A kind of preparation method of the modified carbon felt of nitrogen-doped graphene, includes the following steps and process conditions：
(1) carbon felt of drying process is immersed in acid solution, through soak at room temperature and ultrasonic vibration；Wherein, in acid solution
It is middle impregnate carbon felt time be 18~for 24 hours, the ultrasonic vibration time be 0.5~1.5h；
(2) it by the carbon felt in step (1), is cleaned repeatedly with deionized water；
(3) carbon felt after cleaning is dried；
(4) carbon felt in step (3) is put into tubular type cavity, and tubular type cavity is pushed into heating furnace center heating zone
Domain；
(5) tubular type cavity is sealed, closes air door, later on vacuum pump vacuumizes, until tubular type cavity is true
Reciprocal of duty cycle is down to 30~50Pa；
(6) high pure nitrogen valve is opened, adjustment gas flow is the flushing that 4~8sccm carries out tubular type cavity；
(7) after rinsing, N is closed2Valve vacuumizes, until vacuum degree is down to 1~4mbar；
(8) CH is opened4Valve and NH3Valve, adjustment gas flow are 8~12sccm, heated Tube cavity to first object
Temperature, first object temperature are 700 ± 10 DEG C, and the heating-up time is 40~50min；
(9) after being warming up to first object temperature, 1~3h of soaking time；
(10) after keeping the temperature, temperature is risen into the second target temperature, and after heating starts a period of time, adjust CH4
Flow；Wherein, the second target temperature is 750 ± 10 DEG C, and the heating-up time is 20~30min, the time that adjustment gas flow starts
Point starts 10~15min for heating, adjusts 2~5sccm of gas flow；
(11) after being warming up to the second target temperature, NH is opened3Gas valve, adjustment gas flow are 2~5sccm, are opened
RF switch, and maintaining the reaction time is 1~30min, passes through the modified carbon felt of preparing graphene through chemical vapor deposition；
(12) RF switch is closed, CH is closed4Valve improves NH3Flow to 6~12sccm, maintain the reaction time be 2~
20min continues through the modified carbon felt of preparing graphene through chemical vapor deposition, then furnace cooling；
(13) temperature is cooled to room temperature, and closes NH3Valve closes vacuum pump；
(14) air door is opened, graphene carbon modified felt type product are obtained.
In the step (1), it is 400~500 DEG C that carbon felt, which is dried temperature,.
In the step (1), acid is one of sulfuric acid, nitric acid and hydrochloric acid, and sour concentration of aqueous solution is 1~3mol/L.
In the step (2), wash number is 10~15 times.
In the step (3), carbon felt drying temperature is 80~120 DEG C.
In the step (4), the modes of emplacement of carbon felt is horizontal parallel, in dip-parallel and inclination staggered pattern
It is a kind of.
In step (10)~(11), control gas flow ratio is CH4:NH3=1:1~10:1.
In the step (11), radio frequency power density is 150~300W/m3。
In the step (8), CH is first opened4Valve, adjustment gas flow is 5~7sccm, after gas flow is stablized, then
Open NH3Valve, adjusting to gas flow is 8~12sccm.
In the modified carbon felt of the graphene, N doping amount is 0.3~1wt%.
Design philosophy of the invention is：
The present invention is from technical process, technological parameter and is passed through on the designing points such as gas sequencing and flow, to nitrogen
Doped graphene electrode is improved, so that its charging and discharging curve performance be made to effectively improve, is finally reached energy-saving and emission-reduction
Green energy resource effect.
Existing vanadium cell electrode material specific surface area is low, conductivity is low and urges vanadium ion in order to solve by the present invention
The problem for changing performance difference, prepares nitrogen-doped graphene electrode using vapour deposition process.
Compared with prior art, the present invention has following remarkable advantage and beneficial effect：
1. using business carbon felt as raw material, using the method for chemical vapor deposition, it is modified to prepare nitrogen-doped graphene by the present invention
Carbon felt electrode material, the electrode material have conductivity height, large specific surface area, vanadium ion catalytic performance is good, stability is good, electrochemical
Learn the advantages that catalytic activity is high.
2. the method for preparing the modified carbon felt of nitrogen-doped graphene used in the present invention, raw material is easy to get and low in cost, operation letter
It is single easy, it is suitble to extensive development.
3. having in whole preparation process of the present invention, equipment price is cheap, low raw-material cost is easy to get, operating process is simple
The convenient practical feature of equal industry, facilitates the large-scale production of the commercialization electrode material of VRB.
In short, the present invention, using vapour deposition process, prepares the modified carbon felt of nitrogen-doped graphene to be commercialized carbon felt as raw material
Combination electrode improves conductivity, specific surface area, electro-chemical activity, stability and the electrochemical catalysis performance of carbon felt.With it is unmodified
It is commercialized carbon felt comparison, the modified carbon felt of nitrogen-doped graphene is to four pentavalent ion of vanadium catalytic activity with higher and high electricity
Conductance (see Fig. 1).Compared with unmodified carbon felt, the vanadium cell equipped with the modified carbon felt of nitrogen-doped graphene have lower polarization,
Higher voltage and efficiency (see Fig. 2).High-specific surface area and the graphene uniform of high conductivity are deposited using vapour deposition process
To commercialization Carbon felt surface, the modified carbon felt combination electrode of high performance graphene is prepared.Such methods low cost of raw materials
It is easy to get, it is simple and convenient, and it is suitble to extensive industrialized development, the vanadium cell for being expected to prepare a kind of low-cost and high-performance is used
It is commercialized electrode material.
Detailed description of the invention：
Fig. 1 is using business carbon felt and the modified carbon felt cyclic voltammogram in V electrolyte of graphene.
Fig. 2 is using business carbon felt and the modified carbon felt vanadium cell of graphene in 100mA cm-2Charge and discharge are bent under constant current conditions
Line comparison；Wherein, black thin is the charging and discharging curve of business carbon felt vanadium cell；Black square graphene is modified carbon felt vanadium cell
Charging and discharging curve.
Fig. 3 is the preparation facilities schematic diagram of the modified carbon felt of graphene of the present invention.In figure, 1 control panel；2 heating furnaces；3 valves
Door；4 carbon felt samples；5 pressure gauges；6 tubular type cavitys.
Specific embodiment：
In the specific implementation process, the present invention is to be commercialized carbon felt as raw material, using the side of chemical vapor deposition (CVD)
Method prepares the modified carbon felt electrode of nitrogen-doped graphene.The electrode material has conductivity height, large specific surface area, vanadium ion catalysis
The advantages that performance is good, stability is good, electrochemical catalysis is active high.
As shown in figure 3, the preparation facilities of the modified carbon felt of nitrogen-doped graphene of the present invention mainly includes：Control panel 1, heating
Furnace 2 is (such as：Tube furnace or batch-type furnace etc.), valve 3 (such as：Air door, nitrogen valve, CH4Valve and NH3Valve etc.), carbon felt sample
Product 4, pressure gauge 5 are (such as：Vacuum meter), tubular type cavity 6 (such as：Quartz ampoule) etc., specific structure is as follows：
Tubular type cavity 6 is worn in heating furnace 2, places carbon felt sample 4 in tubular type cavity 6, the both ends of tubular type cavity 6 connect respectively
Tracheae and exhaust tube are tapped into, valve 3 is set in air inlet pipe, pressure gauge 5 is set on exhaust tube, exhaust tube is connected to vacuum pump, is added
Control panel 1 is set in hot stove 2.
The present invention is described further below with reference to embodiment.
Embodiment 1
In the present embodiment, the preparation method of the modified carbon felt of nitrogen-doped graphene includes the following steps：
1. the method for carbon felt processing, includes the following steps：
(1) carbon felt that area is 5cm × 6cm is dried 20~30min under the conditions of 400~500 DEG C.
(2) dry carbon felt is put into the aqueous sulfuric acid of 2mol/L and impregnates 20h, subsequent ultrasonic vibration 0.5h.
(3) carbon felt after immersion is cleaned 12 times repeatedly with deionized water.
(4) by the carbon felt after cleaning in 100 DEG C of dry 12h.
2. graphene carbon modified felt Preparation Method, steps are as follows：
(1) will treated that carbon felt is put into quartz ampoule, the modes of emplacement of carbon felt is that horizontal parallel is placed, and by quartz ampoule
It is pushed into heating furnace center heating region.
(2) by the quartzy seal of tube, air door is closed, later on vacuum pump is evacuated to 50Pa.Open high pure nitrogen
(bulk purity 99.999%) valve, adjustment gas flow be 8sccm (corresponding partial pressure partial pressure is 8~
10mbar) carry out the flushing of quartz ampoule；After flushing, N is closed2Valve vacuumizes, until vacuum degree is down to 2mbar；
(3) CH is opened4Valve, adjustment gas flow be 6sccm (corresponding partial pressure partial pressure is 4~
6mbar)。
(4) after gas flow is stablized, NH is opened3Valve, adjustment gas flow are 10sccm (corresponding partial pressure
Partial pressure is 5~20mbar).
(5) heated quarty tube vacuum chamber is to 700 DEG C, heating-up time 50min.
(6) at 700 DEG C, 1h is kept the temperature；
(7) after keeping the temperature, temperature is risen to 750 DEG C, heating-up time 20min.
(8) after heating starts 10min, CH is adjusted4Flow is that (corresponding partial pressure partial pressure is 1 to 4sccm
~10mbar).
(9) after temperature rises to 750 DEG C, NH is opened3Valve opens RF switch, radio frequency power density 250W/m3, radio frequency
Effect be：It opens plasma (plasma), enhances the decomposition of gas precursor, reduce reaction temperature, gas flow CH4:
NH3=6:4, reaction time 10min pass through the modified carbon felt of preparing graphene through chemical vapor deposition.
(10) RF switch is closed, CH is closed4Valve improves NH3Flow is 10sccm, and the maintenance reaction time is 10min
Afterwards, furnace cooling.
(11) temperature is cooled to room temperature, and closes NH3Valve closes vacuum pump.
(12) air door is opened, graphene carbon modified felt type product are obtained.In the modified carbon felt of the graphene, N doping amount
For 0.7wt%.
In the present embodiment, graphene is evenly distributed in the modification carbon felt of acquisition, does not occur clustering phenomena.
The correlated performance data of the present embodiment is as follows：
Measuring business carbon felt conductivity at room temperature is 1.96Scm-1, the modified carbon felt of the nitrogen-doped graphene of this ratio preparation
Conductivity is 4.5Scm-1, it is business carbon felt more than 2 times.As shown in Figure 1, the compound carbon felt is to four pentavalent ionic catalysis performance of vanadium
It is much better than to be commercialized carbon felt, respective battery performance can improve.Battery polarization is much smaller than commercialization carbon felt, the battery in VRB simultaneously
Voltage efficiency is higher than business carbon felt, and the application requirement for adapting to VRB can promote the industrialization of vanadium redox battery to send out
Exhibition, is shown in Fig. 2.
Embodiment 2
Difference from Example 1 is：
1, (9) step preparing graphene through chemical vapor deposition modified carbon felt time is 5min in step 2.
2, using embodiment 1, remaining same step prepares the modified carbon felt of graphene.In the modified carbon felt of the graphene, nitrogen is mixed
Miscellaneous amount is 0.35wt%.
The modified carbon felt conductivity of nitrogen-doped graphene for measuring the preparation of this ratio at room temperature is 4.0Scm-1, it is business carbon
Felt is more slightly lower than carbon felt conductivity modified in embodiment 1 more than 2 times, and the cell voltage efficiency in VRB is also corresponding lower, this ratio
Example deposition nitrogen-doped graphene amount is very few, and long-time cyclical stability needs further increase.
Embodiment 3
Difference from Example 1 is：
1, (9) step preparing graphene through chemical vapor deposition modified carbon felt time is 20min in step 2.
2, using embodiment 1, remaining same step prepares the modified carbon felt of graphene.In the modified carbon felt of the graphene, nitrogen is mixed
Miscellaneous amount is 0.9wt%.
Since graphene sedimentation time increases, under the same conditions, graphene-supported amount increases on modified electrode, therefore should
Combination electrode conductivity improves, and is 5.0Scm-1Higher than Examples 1 and 2.Cell voltage efficiency in VRB is higher than former carbon felt, but
It is that the compound carbon felt sedimentation time is long, corresponding cost can be higher than embodiment 1, can be good at adapting to vanadium cell system, cheap
Cost, good battery performance can promote the large-scale commercial production of vanadium cell.
Embodiment the result shows that, the present invention is to be commercialized carbon felt as raw material, using the method for chemical vapor deposition (CVD),
Prepare the modified carbon felt of nitrogen-doped graphene.Compound carbon felt prepared by the present invention has good conductivity, high-specific surface area, good
Electrochemical catalysis performance, superior chemical stability and good VRB battery performance and low cost the advantages that.System of the invention
Preparation Method have operation is simple, low cost product is easy to industrialization production and advantages of environment protection, can widely answer
For vanadium redox battery field.
Claims (10)
1. a kind of preparation method of the modified carbon felt of nitrogen-doped graphene, characterized in that include the following steps and process conditions：
(1) carbon felt of drying process is immersed in acid solution, through soak at room temperature and ultrasonic vibration；Wherein, it is soaked in acid solution
Steep carbon felt time be 18~for 24 hours, the ultrasonic vibration time be 0.5~1.5h；
(2) it by the carbon felt in step (1), is cleaned repeatedly with deionized water；
(3) carbon felt after cleaning is dried；
(4) carbon felt in step (3) is put into tubular type cavity, and tubular type cavity is pushed into heating furnace center heating region；
(5) tubular type cavity is sealed, closes air door, later on vacuum pump vacuumizes, until the vacuum degree of tubular type cavity
Down to 30~50Pa；
(6) high pure nitrogen valve is opened, adjustment gas flow is the flushing that 4~8sccm carries out tubular type cavity；
(7) after rinsing, N is closed2Valve vacuumizes, until vacuum degree is down to 1~4mbar；
(8) CH is opened4Valve and NH3Valve, adjustment gas flow are 8~12sccm, heated Tube cavity to first object temperature
Degree, first object temperature are 700 ± 10 DEG C, and the heating-up time is 40~50min；
(9) after being warming up to first object temperature, 1~3h of soaking time；
(10) after keeping the temperature, temperature is risen into the second target temperature, and after heating starts a period of time, adjust CH4Flow；
Wherein, the second target temperature is 750 ± 10 DEG C, and the heating-up time is 20~30min, and the time point that adjustment gas flow starts is liter
Temperature starts 10~15min, adjusts 2~5sccm of gas flow；
(11) after being warming up to the second target temperature, NH is opened3Gas valve, adjustment gas flow are 2~5sccm, open radio frequency and open
It closes, and maintaining the reaction time is 1~30min, passes through the modified carbon felt of preparing graphene through chemical vapor deposition；
(12) RF switch is closed, CH is closed4Valve improves NH3Flow to 6~12sccm, maintain the reaction time be 2~
20min continues through the modified carbon felt of preparing graphene through chemical vapor deposition, then furnace cooling；
(13) temperature is cooled to room temperature, and closes NH3Valve closes vacuum pump；
(14) air door is opened, graphene carbon modified felt type product are obtained.
2. the preparation method of the modified carbon felt of nitrogen-doped graphene according to claim 1, characterized in that the step (1)
In, it is 400~500 DEG C that carbon felt, which is dried temperature,.
3. the preparation method of the modified carbon felt of nitrogen-doped graphene according to claim 1, characterized in that the step (1)
In, acid is one of sulfuric acid, nitric acid and hydrochloric acid, and sour concentration of aqueous solution is 1~3mol/L.
4. the preparation method of the modified carbon felt of nitrogen-doped graphene according to claim 1, characterized in that the step (2)
In, wash number is 10~15 times.
5. the preparation method of the modified carbon felt of nitrogen-doped graphene according to claim 1, characterized in that the step (3)
In, carbon felt drying temperature is 80~120 DEG C.
6. the preparation method of the modified carbon felt of nitrogen-doped graphene according to claim 1, characterized in that the step (4)
In, the modes of emplacement of carbon felt is horizontal parallel, one of dip-parallel and inclination staggered pattern.
7. the preparation method of the modified carbon felt of nitrogen-doped graphene according to claim 1, characterized in that the step (10)
In~(11), control gas flow ratio is CH4:NH3=1:1~10:1.
8. the preparation method of the modified carbon felt of nitrogen-doped graphene according to claim 1, characterized in that the step (11)
In, radio frequency power density is 150~300W/m3。
9. the preparation method of the modified carbon felt of nitrogen-doped graphene according to claim 1, characterized in that the step (8)
In, first open CH4Valve, adjustment gas flow are that 5~7sccm is then turned on NH after gas flow is stablized3Valve is adjusted to gas
Body flow is 8~12sccm.
10. the preparation method of the modified carbon felt of nitrogen-doped graphene according to claim 1, characterized in that the graphene
In modified carbon felt, N doping amount is 0.3~1wt%.
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| CN110534757A (en) * | 2019-09-11 | 2019-12-03 | 上海交通大学 | High performance carbon electrode and preparation method thereof |
| CN110639882A (en) * | 2019-09-19 | 2020-01-03 | 大同新成新材料股份有限公司 | Preparation method of nitrogen-doped graphene modified carbon felt |
| CN111509235A (en) * | 2020-04-29 | 2020-08-07 | 沈阳建筑大学 | Sulfur-nitrogen co-doped graphene modified graphite felt composite electrode and preparation method thereof |
| CN111509238A (en) * | 2020-03-20 | 2020-08-07 | 长沙理工大学 | Preparation method of macroscopic quantity graphene modified electrode material |
| CN112723334A (en) * | 2019-10-28 | 2021-04-30 | 中国科学院上海硅酸盐研究所 | Method for preparing nitrogen-doped carbon material by using fluorine-containing polymer |
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| CN115275226A (en) * | 2022-09-02 | 2022-11-01 | 寰泰储能科技股份有限公司 | Electrode preparation method, electrode and flow battery |
| CN116031424A (en) * | 2023-03-24 | 2023-04-28 | 南方科技大学 | Flow battery composite electrode, preparation method thereof and flow battery |
| CN118398752A (en) * | 2024-06-25 | 2024-07-26 | 烟台奥森制动材料有限公司 | Modified carbon felt electrode material and preparation method and application thereof |
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| CN110444798A (en) * | 2019-08-21 | 2019-11-12 | 大同新成新材料股份有限公司 | A kind of Preparation equipment and its method of the modified carbon felt of graphene |
| CN110534757A (en) * | 2019-09-11 | 2019-12-03 | 上海交通大学 | High performance carbon electrode and preparation method thereof |
| CN110639882A (en) * | 2019-09-19 | 2020-01-03 | 大同新成新材料股份有限公司 | Preparation method of nitrogen-doped graphene modified carbon felt |
| CN112723334A (en) * | 2019-10-28 | 2021-04-30 | 中国科学院上海硅酸盐研究所 | Method for preparing nitrogen-doped carbon material by using fluorine-containing polymer |
| CN111509238A (en) * | 2020-03-20 | 2020-08-07 | 长沙理工大学 | Preparation method of macroscopic quantity graphene modified electrode material |
| CN111509238B (en) * | 2020-03-20 | 2021-09-24 | 山东奥德储能科技有限公司 | Preparation method of macroscopic quantity graphene modified electrode material |
| CN111509235B (en) * | 2020-04-29 | 2021-11-12 | 沈阳建筑大学 | Sulfur-nitrogen co-doped graphene modified graphite felt composite electrode and preparation method thereof |
| CN111509235A (en) * | 2020-04-29 | 2020-08-07 | 沈阳建筑大学 | Sulfur-nitrogen co-doped graphene modified graphite felt composite electrode and preparation method thereof |
| CN113047035A (en) * | 2021-04-16 | 2021-06-29 | 重庆信合启越科技有限公司 | High-temperature preparation method of graphene composite carbon felt |
| CN113550142A (en) * | 2021-07-20 | 2021-10-26 | 重庆信合启越科技有限公司 | Method for industrial mass production of vertical graphene composite carbon felt |
| CN113550142B (en) * | 2021-07-20 | 2022-04-26 | 重庆信合启越科技有限公司 | Method for industrial mass production of vertical graphene composite carbon felt |
| CN115275226A (en) * | 2022-09-02 | 2022-11-01 | 寰泰储能科技股份有限公司 | Electrode preparation method, electrode and flow battery |
| CN115275226B (en) * | 2022-09-02 | 2023-04-11 | 寰泰储能科技股份有限公司 | Electrode preparation method, electrode and flow battery |
| CN116031424A (en) * | 2023-03-24 | 2023-04-28 | 南方科技大学 | Flow battery composite electrode, preparation method thereof and flow battery |
| CN116031424B (en) * | 2023-03-24 | 2023-06-23 | 南方科技大学 | Flow battery composite electrode, preparation method thereof and flow battery |
| CN118398752A (en) * | 2024-06-25 | 2024-07-26 | 烟台奥森制动材料有限公司 | Modified carbon felt electrode material and preparation method and application thereof |
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