CN107658435A - A kind of nickel radical battery positive electrode and preparation method thereof - Google Patents
A kind of nickel radical battery positive electrode and preparation method thereof Download PDFInfo
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- CN107658435A CN107658435A CN201710730359.8A CN201710730359A CN107658435A CN 107658435 A CN107658435 A CN 107658435A CN 201710730359 A CN201710730359 A CN 201710730359A CN 107658435 A CN107658435 A CN 107658435A
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- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
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- H01M4/02—Electrodes composed of, or comprising, active material
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
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Abstract
The present invention provides a kind of nickel radical battery positive electrode, and the positive electrode has a structure of graphene sheet layer cladding nickel hydroxide particle, and the quality accounting of nickel hydroxide is 60~95% in material；The thickness of the graphene sheet layer is 0.5~10nm, and the planar dimension of graphene sheet layer is 500nm~50 μm；Graphene sheet layer tight is connected with each other in nickel hydroxide surface and to form continuous conduction network.The present invention also proposes the preparation method of the positive electrode.Compound positive electrode proposed by the present invention has high electric conductivity, it is not easy to poison, with super excellent high rate capability and good circulation stability, it is ideal nickel radical battery positive electrode, can be widely applied to the fields such as various portable electric appts, electric automobile and Aero-Space；In addition, the composite can be prepared, suitable for industrialized production from low-cost raw material by repeated high, simple, the time-consuming few technique of process.
Description
Technical field
The invention belongs to battery material field, and in particular to a kind of electrode material of nickel radical battery and preparation method thereof.
Background technology
As increasingly sharpening for environmental pollution is increasingly exhausted with fossil energy, sustainable development is to novel renewable energy
Requirement improve constantly.Wherein, chargeable nickel radical battery is with its excellent specific property, and turns into electric automobile, Emergency power source, storage
The first choice of the energy storage devices such as energy power station, and future space technology and the preferable potential power-supply system of high-end energy-storage system.It can fill
Electric nickel radical battery is mainly made up of positive pole, negative pole, barrier film and electrolyte, and with high charge storage density, fast charging and discharging
The system of the chargeable nickel radical battery novel anode material of feature, good efficiency for charge-discharge and high circulation life-span and low cost
Standby is one of current most active branch of this research direction.
Nickel hydroxide often with positive electrode there is raw material easily to obtain as nickel radical battery, cheap, environment-friendly excellent
Point, it is the most commonly used nickel radical battery positive electrode of research.But nickel hydroxide positive plate can be on surface not in charge and discharge process
Disconnected deposition negative material, blocks mass transfer in liquid phase passage so that positive pole poisons, battery failure.So that it is as nickel radical battery positive pole
The shortcomings that specific capacity is low, cyclical stability is poor, utilization rate is low be present in material.Therefore, the research in this current field concentrates on nontoxic
In change, high usage, the research of low cost new positive electrode, exploitation and technology of preparing.
Graphene is a kind of new two-dimensional material, has the advantages that specific surface area is big, good conductivity, Stability Analysis of Structures, closely
By the extensive concern in energy storage field over year.Graphene, which is closely coated on nickel hydroxide surface, can effectively suppress ZnO in hydroxide
Deposited on nickel, and then alleviate positive pole poisoning problem, extend the positive electrode life-span.The graphene being connected with each other simultaneously provides for electrode
Good conducting matrix grain, and then improve the high rate capability and cyclical stability of battery.Therefore as nickel radical battery positive pole
Material will show high specific capacity, high rate capability, long circulation life.But the limited system of current graphene coated nickel hydroxide
The limited preparation method of Preparation Method still limits its practical application.
The content of the invention
Easily poison weak point with poor circulation, mesh of the invention for the nickel radical battery positive electrode of prior art
Be to provide it is a kind of have high power capacity, high rate capability, excellent cycling performance, can be as the graphene of nickel radical battery positive electrode
Coat nickel hydroxide composite.
Second object of the present invention is to propose the preparation method of the positive electrode.
Third object of the present invention is to propose the battery containing the positive electrode.
The technical scheme for realizing the object of the invention is：
A kind of nickel radical battery positive electrode, the positive electrode have the knot of graphene sheet layer cladding nickel hydroxide particle
Structure, the quality accounting of nickel hydroxide is 60~95% in material；The thickness of the graphene sheet layer is 0.5~10nm, graphene
The planar dimension of lamella is 500nm~50 μm；Graphene sheet layer tight is in nickel hydroxide surface, and the company of being formed that is connected with each other
Continuous conductive network.
Clad structure proposed by the present invention is 0.5~10nm by thickness, and planar dimension is the graphene film of 500nm~50 μm
Layer cladding nickel hydroxide is formed, and wherein nickel hydroxide size is 20nm~50 μm, and graphene is wrapped in nickel hydroxide surface, and that
This is connected to form continuous conduction network.When the clad structure is used as nickel radical battery positive electrode, specific capacity is in 1C discharge and recharge conditions
Lower reversible capacity is higher than 200mAh/g.
The preparation method of nickel radical battery positive electrode of the present invention, including step：
(1) nickel based compound is dispersed in water and/or organic solvent with graphene oxide or graphene uniform, then normal
Reacted in pressure reactor or water heating kettle, reaction temperature is 25~250 DEG C, the nickel based compound and graphene oxide or stone
The mass ratio that feeds intake of black alkene is 0.8~50：1；
Wherein, the nickel based compound is the presoma of nickel hydroxide or nickel hydroxide, the presoma of the nickel hydroxide
For the one or more in nickel nitrate, nickel sulfate, nickel oxide, nickel chloride, nickel acetate, the organic solvent is ethanol, propyl alcohol, second
One or more combinations in glycol, isopropanol, methyl pyrrolidone；The mode of the reaction is hydro-thermal reaction, solvent heat
One or more in reaction, coprecipitation reaction,
(2) use selected from any of vacuum drying, freeze-drying and supercritical drying seasoning to preceding step
Product system is dried, and obtains solid product.
Wherein, the nickel hydroxide by calcination method, solvent-thermal method, hydro-thermal method, coprecipitation, vapour deposition process preparation side
One kind in method is prepared, and nickel hydroxide size is 20nm~50 μm.
Wherein simplify degree from technique and cost angle considers, preferably calcination method.
Wherein, the mass ratio that feeds intake of described nickel hydroxide and graphene oxide or graphene is 35~45:1.
Preferably, the graphene is the method mechanical stripping graphite flake using emulsification cutting and strong combination of ultrasound to the present invention
Obtain；The graphene oxide is prepared with improved hummers ' methods, is specially：Graphite flake and sodium nitrate are well mixed, added
Enter the concentrated sulfuric acid, KMnO is slowly added under the conditions of less than 4 DEG C4, and the stirring reaction 1h at a temperature of less than 4 DEG C, then heat to
30~40 DEG C of 0.5~1h of reaction, are then slowly added into deionized water, are heated to seething with excitement after deionized water is added completely into, and protect
Hold reaction 30min；Wherein graphite flake, sodium nitrate, the concentrated sulfuric acid, KMnO4, mass ratio be 1：0.1~0.8：20~50：2~4.
Further, additive is also added with the aqueous dispersion of step (1), the additive is the ethoxy of aminopropyl three
One or more in base silane, CTAB, lauryl sodium sulfate (SDS), PVP, F127；The matter of additive and nickel based compound
Amount ratio is 1：0.5~2；The mode of the reaction is coprecipitation reaction.
One of optimal technical scheme of the present invention is that step (1) is：Graphene oxide is scattered in its quality 1000~2000
In water again, separately nickel based compound is dispersed in the water of 5~20 times of its quality, the nickel based compound aqueous solution is slowly added to oxygen
In graphite aqueous solution, being stirred at room temperature makes it be co-precipitated 2~4 hours.
Wherein, the solvent of the dispersion of step (1) does not have reproducibility, then after step (1), before step (2),
Reducing agent is added into the system after step (1), makes generation reduction reaction；The reducing agent is selected from hydrazine hydrate, sodium borohydride, boron
One or more in hydrofining, hydrogen, the temperature for carrying out reduction reaction are 50 DEG C~90 DEG C.
In the organic solvent that the present invention selects, as ethylene glycol has reproducibility.
Alternatively, step (2) dry after, gained solid product is heat-treated, heat treatment temperature be 200 DEG C~
900 DEG C, the time is 0.5~10 hour.
Battery containing described nickel radical battery positive electrode, the battery are nickel-zinc cell, nickel-cadmium cell, ni-mh electricity
One kind in pond.
The present invention has the following advantages that compared with prior art：
(1) present invention uses low-cost nickel hydroxide or its precursor salt and graphene oxide (or graphene) as original
Material；(2) nickel with graphene coated nickel hydroxide structure is prepared using simple hydro-thermal method, solvent-thermal method or coprecipitation
Base battery positive electrode.(3) nickel radical battery for making positive pole assembling using graphene coated nickel hydroxide composite has 1.2
~1.8V output voltages；(4) graphene coated nickel hydroxide composite obtained by is used as specific volume during nickel radical battery positive electrode
Amount is big (in 1C discharge and recharges, specific capacity reaches 200mAh/g)；(5) gained graphene coated nickel hydroxide composite is used as zinc
There is super good cycle performance (to remain to keep after 100 repeated charges under the conditions of 1C discharge and recharges during nickel-based battery positive electrode
150-200mAh/g)。
To sum up, composite of the invention has high electric conductivity, is not easy to poison, have super excellent high rate capability with
And good circulation stability, be ideal nickel radical battery positive electrode, can be widely applied to various portable electric appts,
The field such as electric automobile and Aero-Space；In addition, the composite can from low-cost raw material, by it is repeated it is high,
Process is simple, takes few technique prepares, suitable for industrialized production.
Brief description of the drawings
Fig. 1 is ESEM (SEM) characterization result of the positive electrode of embodiment 2.
Fig. 2 is the charging and discharging curve for the full battery that the positive electrode of embodiment 2 forms.
Embodiment
Detailed description below is used to illustrate the present invention, but should not be construed as limiting the invention.
In embodiment, in embodiment, graphene and graphene oxide are that homemade method obtains.The preparation side of graphene
Method is to be obtained using the method mechanical stripping graphite flake of emulsification cutting and strong combination of ultrasound, and emulsification cutting and strong ultrasound are alternately entered
OK, alternating 5 times.It is 2h wherein to emulsify clipping time, and the rotating speed for emulsifying cutting equipment is 10000rpm, strong ultrasonic 30min, power
For 500W.Then centrifuged by 2000rpm, take upper strata suspension, concentrated, freeze-drying obtains graphene (referring to special
Profit application 201710045865.3, publication number 106672954A).
The preparation method of graphene oxide is improved hummers ' methods.10g graphite flakes and 5g sodium nitrate are well mixed,
The 220mL concentrated sulfuric acids are added, less than 4 DEG C, 30g KMnO are slowly added under conditions of stirring, within 30min4, then less than 4
Stirring reaction 1h at DEG C, 35 DEG C of reaction 30min are then warming up to, 450mL deionized waters is then slowly added into, treats that water is complete
After addition, it is heated to seething with excitement, and keeps reacting 30min, then through supercooling, wash, dialysis, concentration and freeze-drying obtains oxygen
Graphite alkene.
Using the above-mentioned preparation method in this laboratory, the thickness of obtained graphene and graphene oxide layer for 0.5~
10nm, the planar dimension of graphene sheet layer is 500nm~50 μm.
In embodiment, unless otherwise instructed, technological means used is this area conventional technology.
Embodiment 1：
A kind of graphene coated nickel hydroxide composite, it is made by the steps to obtain：
(1) by nickel hydroxide (purchased in market) 80g and graphene oxide 20g, (the two mass ratio is 4:1) mix, be distributed to
In 5000g water, then it is sealed in water heating kettle, at 150 ± 5 DEG C, reacts 12 hours or so；
(2) 5000g hydrazine hydrates are added into the system by step (1), reduction reaction, reaction 2 are carried out at 60 ± 2 DEG C
Hour or so；
Solid product, as graphene coated nickel hydroxide compound are freeze-dried to obtain at a temperature of (3) -50 DEG C.
Graphene coated nickel hydroxide obtained by the present embodiment has three-dimensional net structure, and three dimensional gel is formed by graphene
Network, size are that to be coated on thickness be 0.5~10nm to the nickel hydroxide particle of 20nm~50 μm, and planar dimension is the μ of 500nm~50
Inside m graphene sheet layer.
Embodiment 2
A kind of graphene coated nickel hydroxide composite, it is made by the steps to obtain：
(1), 0.5g graphene oxides are dispersed in 1000g water, separately 20g nickel hydroxides are dispersed in 200g water, will
The nickel hydroxide aqueous solution is slowly added in graphene oxide water solution, and being stirred at room temperature makes it be co-precipitated 3 hours；
(2) 500g hydrazine hydrates are added into the system by step (1), reduction reaction, reaction 2 are carried out at 60 ± 2 DEG C
Hour or so；
Solid product, as graphene coated nickel hydroxide compound are freeze-dried to obtain at a temperature of (3) -50 DEG C.
The embodiment is different from embodiment 1, prepares graphene coated nickel hydroxide using the precipitation method, is shown using scanning electron
Micro mirror characterizes its pattern as shown in figure 1, resulting graphene coated nickel hydroxide composite is by thin pliable graphene
Lamella is completely coated on the nickel hydroxide particle surface that size is 10nm~50 μm and formed, and Zinc oxide particles are evenly distributed.Its
Reversible charging and discharging curve is as shown in Figure 2.
Embodiment 3
A kind of graphene coated nickel hydroxide composite, it is made by the steps to obtain：
(1) by 0.5g graphene dispersions in 1000g water, separately 20g nickel hydroxides are dispersed in 200g water, by hydroxide
The nickel aqueous solution is slowly added in graphene oxide water solution, and being stirred at room temperature makes it be co-precipitated 3 hours；
Solid product, as graphene coated nickel hydroxide compound are freeze-dried to obtain at a temperature of (2) -50 DEG C.
The embodiment is different from embodiment 2, and using graphene as raw material, the precipitation method prepare graphene coated hydroxide
Nickel, it is not necessary to which the step of electronation graphene oxide, resulting graphene coated nickel hydroxide composite is by Bao Errou
Soft graphene sheet layer is completely coated on the nickel hydroxide particle surface that size is 20nm~50 μm and formed, and nickel hydroxide particle
It is evenly distributed.
Embodiment 4
A kind of graphene coated nickel hydroxide composite, it is made by the steps to obtain：
(1), 20g nickel hydroxides are dispersed in 200g water, 20g aminopropyl trimethoxysilanes is added, is stirred at room temperature 24
Hour；
(2) 0.5g graphene oxides are dispersed in 1000g water, the system Jing Guo step (1) is slowly added to aoxidize stone
In black aqueous solution, being stirred at room temperature makes it be co-precipitated 3 hours；
(3) 500g hydrazine hydrates are added into the system by step (1), reduction reaction, reaction 2 are carried out at 60 ± 2 DEG C
Hour or so；
Solid product, as graphene coated nickel hydroxide compound are freeze-dried to obtain at a temperature of (4) -50 DEG C.
Graphene coated nickel hydroxide composite obtained by the embodiment has graphene coated nickel hydroxide structure,
Thin pliable graphene sheet layer is completely coated on size
The nickel hydroxide particle surface of 20nm~50 μm, and nickel hydroxide particle is evenly distributed.
Embodiment 5
A kind of graphene coated nickel hydroxide composite, it is made by the steps to obtain：
(1) nickel hydroxide obtained by 20g coprecipitations is dispersed in 200g water, adds 20g SDS, it is small to be stirred at room temperature 24
When；
(2) 0.5g graphene oxides are dispersed in 1000g water, the system Jing Guo step (1) is slowly added to aoxidize stone
In black aqueous solution, being stirred at room temperature makes it be co-precipitated 3 hours；
(3) 500g hydrazine hydrates are added into the system by step (1), reduction reaction, reaction 2 are carried out at 60 ± 2 DEG C
Hour or so；
Solid product, as graphene coated nickel hydroxide compound are freeze-dried to obtain at a temperature of (4) -50 DEG C.
Graphene coated nickel hydroxide composite obtained by the embodiment has graphene coated nickel hydroxide structure,
Thin pliable graphene sheet layer is completely coated on size
The nickel hydroxide particle surface of 20nm~50 μm, and nickel hydroxide particle is evenly distributed.
Embodiment 6
A kind of graphene coated nickel hydroxide composite, it is made by the steps to obtain：
(1) 0.5g graphene oxides are dispersed in 1000g water, separately 40g nickel nitrates is dispersed in 200g water, by nitric acid
The nickel aqueous solution is slowly added in graphene oxide water solution, and being stirred at room temperature makes it be co-precipitated 3 hours；
(2) 500g hydrazine hydrates are added into the system by step (1), reduction reaction, reaction 2 are carried out at 60 ± 2 DEG C
Hour or so；
Solid product is freeze-dried to obtain at a temperature of (3) -50 DEG C；
(4) by the solid product Jing Guo step (3) in the tube furnace that nitrogen makees protective atmosphere at 600 DEG C calcining is 2 small
When, obtain graphene coated nickel hydroxide composite.
Gained composite has graphene coated nickel hydroxide structure, and thin pliable graphene sheet layer is completely coated on
Size is the nickel hydroxide particle surface of 50nm~5 μm, and nickel hydroxide particle is evenly distributed.
Battery performance test
Value material made from embodiment 1-6 is made into full battery to be tested, takes following steps to prepare Ni-based electricity
Pond positive pole working electrode：
(1) graphene coated nickel hydroxide composite, binder PTFE, acetylene black are pressed 8：1：1 ratio mixing is equal
It is even, uniformly it is applied to after being modulated into paste with deionized water in nickel foam；
(2) dried 12 hours at 80 DEG C in vacuum drying oven；
(3) nickel foam for scribbling graphene coated nickel hydroxide composite is cut into disk and working electrode is made.
It is as follows to the method for testing of the chemical property of electrode material：
(1) simulated battery is commercial ZnO powder using button CR2032 type systems, wherein negative pole.
(2) reversible capacity of electrode material, coulombic efficiency, cycle performance, experiment carry out test point using constant current charge-discharge
Analysis.Discharge and recharge system is：Voltage range：1.0-1.9V；Cycle-index is generally 1-3000 times.
It the results are shown in Table 1.
Table 1：Embodiment 1-6 forms the cycle performance of battery
| Embodiment | Reversible capacity (mAh/g) | Capability retention (%) after 50 circulations |
| Embodiment 1 | 192 | 75 |
| Embodiment 2 | 226 | 82 |
| Embodiment 3 | 213 | 79 |
| Embodiment 4 | 237 | 91 |
| Embodiment 5 | 219 | 87 |
| Embodiment 6 | 207 | 90 |
It is existing poisoning problem, poorly conductive and circulation that the present invention is used as nickel radical battery positive electrode for nickel hydroxide
Deficiency present in poor performance, it is final to obtain with ultra-high capacity, ultra-high magnifications by the control of preparation method and preparation condition
The chargeable nickel radical battery positive electrode of performance and super good cycle performance.This to promote high-performance nickel radical battery development and
Solve energy shortage etc. to have very important significance.
Example above is only that the embodiment of the present invention is described, and not the scope of the present invention is carried out
Limit, those skilled in the art can also do numerous modifications and variations, not depart from design of the present invention on the basis of existing technology
On the premise of spirit, all variations and modifications that this area ordinary skill technical staff makes to technical scheme,
It should fall into the protection domain of claims of the present invention determination.
Claims (10)
1. a kind of nickel radical battery positive electrode, it is characterised in that there is the positive electrode graphene sheet layer to coat hydroxide
The structure of nickel particle, the quality accounting of nickel hydroxide is 60~95% in material；The thickness of the graphene sheet layer be 0.5~
10nm, the planar dimension of graphene sheet layer is 500nm~50 μm；Graphene sheet layer tight in nickel hydroxide surface, and that
This is connected to form continuous conduction network.
2. the preparation method of nickel radical battery positive electrode described in claim 1, it is characterised in that including step：
(1) nickel based compound is dispersed in water and/or organic solvent with graphene oxide or graphene uniform, then in atmospheric reverse
Answer and reacted in device or water heating kettle, reaction temperature is 25~250 DEG C, the nickel based compound and graphene oxide or graphene
The mass ratio that feeds intake for 0.8~50：1；
Wherein, the nickel based compound is the presoma of nickel hydroxide or nickel hydroxide, and the presoma of the nickel hydroxide is nitre
One or more in sour nickel, nickel sulfate, nickel oxide, nickel chloride, nickel acetate, the organic solvent are ethanol, propyl alcohol, second two
One or more combinations in alcohol, isopropanol, methyl pyrrolidone；The mode of the reaction is hydro-thermal reaction, solvent heat is anti-
Answer, the one or more in coprecipitation reaction,
(2) using the product selected from any of vacuum drying, freeze-drying and supercritical drying seasoning to preceding step
System is dried, and obtains solid product.
3. preparation method according to claim 2, it is characterised in that the nickel hydroxide is by calcination method, solvent-thermal method, water
One kind in hot method, coprecipitation, the preparation method of vapour deposition process is prepared, and nickel hydroxide size is 20nm~50 μm.
4. preparation method according to claim 2, it is characterised in that described nickel hydroxide and graphene oxide or graphite
The mass ratio that feeds intake of alkene is 35~45:1.
5. preparation method according to claim 2, it is characterised in that the graphene is using emulsification cutting and strong ultrasound
With reference to method mechanical stripping graphite flake obtain；The graphene oxide is prepared with improved hummers ' methods, is specially：By stone
Ink sheet and sodium nitrate are well mixed, and add the concentrated sulfuric acid, KMnO is slowly added under the conditions of less than 4 DEG C4, and in less than 4 DEG C temperature
Lower stirring reaction 1h, 30~40 DEG C of 0.5~1h of reaction are then heated to, deionized water is then slowly added into, treats that deionized water is complete
It is heated to seething with excitement after full addition, and keeps reacting 30min；Wherein graphite flake, sodium nitrate, the concentrated sulfuric acid, KMnO4, mass ratio be
1：0.1~0.8：20~50：2~4.
6. preparation method according to claim 2, it is characterised in that also add in the aqueous dispersion of step (1)
Add agent, the additive is aminopropyl triethoxysilane, CTAB, lauryl sodium sulfate, one kind in PVP, F127 or more
Kind；The mass ratio of additive and nickel based compound is 1：0.5~2；The mode of the reaction is coprecipitation reaction.
7. according to the preparation method described in any one of claim 2~6, it is characterised in that step (1) is：By graphene oxide
It is scattered in the water of 1000~2000 times of its quality, is separately dispersed in nickel based compound in the water of 5~20 times of its quality, will be Ni-based
Compound water solution is slowly added in graphene oxide water solution, and being stirred at room temperature makes it be co-precipitated 2~4 hours.
8. according to the preparation method described in any one of claim 2~6, it is characterised in that after step (1), step (2) it
Before, reducing agent is added into the system after step (1), makes generation reduction reaction；The reducing agent is selected from hydrazine hydrate, hydroboration
One or more in sodium, potassium borohydride, hydrogen, the temperature for carrying out reduction reaction are 50 DEG C~90 DEG C.
9. according to the preparation method described in any one of claim 2~6, it is characterised in that after step (2) is dried, to gained
Solid product is heat-treated, and heat treatment temperature is 200 DEG C~900 DEG C, and the time is 0.5~10 hour.
10. the battery containing the nickel radical battery positive electrode described in claim 1, it is characterised in that the battery is nickel zinc
One kind in battery, nickel-cadmium cell, Ni-MH battery.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950500A (en) * | 2019-03-29 | 2019-06-28 | 北京航空航天大学 | A kind of manganese dioxide positive pole material for Zinc ion battery can be filled and preparation method thereof and battery |
| CN110085440A (en) * | 2019-04-23 | 2019-08-02 | 中国计量大学 | A kind of nickel hydroxide/redox graphene electrode material preparation method |
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| CN115084517A (en) * | 2021-08-16 | 2022-09-20 | 广州倬粤新材料科技研究有限公司 | Electrode plate material of graphene nickel-zinc battery and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950500A (en) * | 2019-03-29 | 2019-06-28 | 北京航空航天大学 | A kind of manganese dioxide positive pole material for Zinc ion battery can be filled and preparation method thereof and battery |
| CN110085440A (en) * | 2019-04-23 | 2019-08-02 | 中国计量大学 | A kind of nickel hydroxide/redox graphene electrode material preparation method |
| CN110943221A (en) * | 2019-12-16 | 2020-03-31 | 四川大学 | Preparation method and application of nickel hydroxide cathode material |
| CN110943221B (en) * | 2019-12-16 | 2020-12-15 | 四川大学 | Preparation method and application of nickel hydroxide cathode material |
| CN112531171A (en) * | 2020-12-02 | 2021-03-19 | 萝北瑞喆烯碳新材料有限公司 | Graphene-coated silicon carbide negative electrode material and preparation method thereof |
| CN113430408A (en) * | 2021-06-24 | 2021-09-24 | 山东科技大学 | High-conductivity nickel-modified graphene/copper composite material and preparation method thereof |
| CN115084517A (en) * | 2021-08-16 | 2022-09-20 | 广州倬粤新材料科技研究有限公司 | Electrode plate material of graphene nickel-zinc battery and preparation method thereof |
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