CN110085821A - A kind of novel SnO2The preparation method of graphene room temperature anode material of lithium-ion battery - Google Patents
A kind of novel SnO2The preparation method of graphene room temperature anode material of lithium-ion battery Download PDFInfo
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- CN110085821A CN110085821A CN201910309000.2A CN201910309000A CN110085821A CN 110085821 A CN110085821 A CN 110085821A CN 201910309000 A CN201910309000 A CN 201910309000A CN 110085821 A CN110085821 A CN 110085821A
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
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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
- Y02E60/10—Energy storage using batteries
Abstract
The present invention discloses a kind of novel SnO2The preparation method of graphene nanocomposite material.Graphene nanocomposite material is constructed using hydro-thermal method, and utilizes the method for anaerobic environment high-temperature heat treatment to SnO2Vacancy defect is introduced in nanocrystal.Thus obtained novel nanocomposite materials are measured with superior charge-discharge velocity and cyclical stability, can be used for room temperature sodium-ion battery cathode.
Description
Technical field
The invention belongs to nm regimes, are applied to nano material energy storage scientific domain, describe novel SnO2Graphene is normal
The preparation method of warm anode material of lithium-ion battery.
Background technique
Since reform and opening-up, China's Battery Market is gradually expanded, and battery industry gradually develops.And conventional batteries are because it is to ring
The serious pollution in border becomes a big pain spot of China's battery industry development.And more advanced battery is just locating the budding period, technology
Or it is tender.In this period, lithium ion battery is because of its energy density with higher, outstanding charge-discharge performance and good
Service life and relatively simple manufacturing technology, develop rapidly in field of batteries, and to civilian mobile phone, automobile market
Even military project market development.And excessive development results in lithium metal supply falls short of demand, new substitute is sought in market in urgent need.This
When a, source it is more extensive and it is cheap with received similar in lithium property metal by it is found that.But because sodium-ion battery
Charge-discharge velocity needed for negative electrode material is high and cycle life requirement is also high, and existing negative electrode material is difficult to meet sodium in market
The high request of ion battery, so sodium-ion battery field also fails to the breakthrough of matter.To improve electrode material stable circulation
Property and charge-discharge velocity, material nanoization and the extremely effective method generally acknowledged by related fields pursuer of building composite material.
Secondly, sight has been shifted to the good, stability with safety by us under the guidance of researcher's numerous studies at home and abroad
High, the advantages that service life is long, specific capacity is high SnO2Novel anode material.And it is compound by material nanoization mentioned above and building
The method of material solves SnO2Charge and discharge volume expansion, the problems such as cyclicity is poor.Facts proved that passing through building composite material
Method significantly improves SnO really2The storage sodium cycle life of electrode material, but even by SnO2Particle has been reduced to nanometer
Rank, the problem that charge-discharge velocity is slow, high rate performance is poor still cannot be solved particularly effectively, hamper the development of such material
With market application extension.
Summary of the invention
Invention describes a kind of novel SnO2The preparation method of graphene nanocomposite material.We utilize hydro-thermal method
Graphene nanocomposite material is constructed, and utilizes the method for anaerobic environment high-temperature heat treatment to SnO2Vacancy is introduced in nanocrystal
Defect.Thus obtained novel nanocomposite materials are measured with superior charge-discharge velocity and cyclical stability, can be used for
Room temperature sodium-ion battery cathode.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals:
The advanced composite material (ACM) is made by following methods step:
Step (1), by 200~300mg SnSO4·5H2O is dissolved into 15ml pure water, is stirred evenly；It is added dropwise 2mg/ml's
Graphene oxide water solution 6-10ml is in tin tetrachloride solution.Acquired solution is put in ultrasonic bath at room temperature and is shaken
20~30min has obtained filemot transparent clear solution.
Wherein, SnSO4Mass ratio with graphene oxide is (74.3-222.9): (10-20).
Acquired solution sealing is placed in 50ml hydrothermal reaction kettle by step (2).20-24h is kept the temperature at 140-150 DEG C.
(6000~6500rpm, 8~10min), taking precipitate and baking oven is centrifuged in acquired solution by step (3)
In, in 70-80 DEG C of vacuum drying 14-15h.
Powder after drying is put in atmosphere protection tube furnace by step (4), is passed through reducibility gas, controls gas stream
Speed has obtained required oxygen-containing vacancy defect SnO in 600-800ml/min, tempering 3~5 hours at 400-600 DEG C2-
Graphene nanocomposite material
Remarks: the reducibility gas being passed through in atmosphere protection tube furnace is to contain 3-8vol.%H2Ar/H2Gaseous mixture.
By novel SnO obtained above2Negative electrode is made in graphene room temperature anode material of lithium-ion battery, with sodium gold
Belong to for the obtained sodium-ion battery of anode and carries out relevant electric performance test.
Electrode preparation method provided by the present invention is for example following: using negative electrode material sample obtained above and PVDF and
Super P carbon black is 75:10:15 mixing in mass ratio, is adjusted to thick by mixture with N-Methyl pyrrolidone and is applied to copper
The surface of foil.Mixture is put in drying in vacuum, cutting radius is the copper foil coating disk of 7.5mm as sodium-ion battery
Electrode.Wherein the sodium-ion battery uses NaClO4Concentration is 1mol/L, the electrolyte and metal sodium foil of EC:PC=1:1
Piece is used as to electrode.
Next, using current density be 40mA/g, charge and discharge potential be 0.05-3V constant current, with charge and discharge electrical method into
The burn-in test of row sodium-ion battery, executes circulation 350 times；It is 40mA/g using current density, charge and discharge potential is from 0.05-3V
Constant current, with charge and discharge electrical method test battery capacity, execute circulation 50 times；It is respectively 40,100,240 using current density,
600,1200mA/g, charge and discharge potential executes circulation from the high rate performance of the testing current battery of 0.05-3V, every group of current density
10 times.
The present invention has the characteristics that following:
Invention describes novel SnO2Graphene room temperature anode material of lithium-ion battery and preparation method thereof.We are sharp
Nanocomposite is constructed with hydro-thermal method, and utilizes SnO2Defect vacancy, which is easily introduced, receives the property of ion, in anaerobic environment high temperature
Under heat treatment, to SnO2Vacancy defect is introduced in nanocrystal.Thus obtained novel nanocomposite materials have capacity greatly, again
The features such as rate performance is good, good cycle, long service life, and superior charge-discharge velocity and circulation have been measured in an experiment
Stability solves SnO2The great number of issues of single negative electrode material.
Detailed description of the invention
Fig. 1 is scanning electron microscope (SEM) figure of sample: (a) testing 1SnO2Graphene room temperature anode material of lithium-ion battery,
(b) comparative example.
Fig. 2 is transmission electron microscope (TEM) figure of sample: (a) testing 1SnO2Graphene room temperature anode material of lithium-ion battery,
(b) comparative example；
Fig. 3 is SnO prepared by the present invention2The X-ray diffraction of graphene room temperature anode material of lithium-ion battery and comparative example
(XRD) map；
Fig. 4 is SnO prepared by the present invention2The X-ray photoelectricity of graphene room temperature anode material of lithium-ion battery and comparative example
Sub- power spectrum (XPS) map；
Fig. 5 is SnO prepared by the present invention2Graphene room temperature anode material of lithium-ion battery and comparative example make sodium ion electricity
Specific energy density-cycle-index map when the cathode of pond；
Fig. 6 is SnO prepared by the present invention2Graphene room temperature anode material of lithium-ion battery and comparative example make sodium ion electricity
High rate performance map when the cathode of pond；
Fig. 7 is SnO prepared by the present invention2When graphene room temperature anode material of lithium-ion battery makees sodium-ion battery cathode
Ageing of performance test map.
Specific embodiment
Followed by specific experiment, the present invention will be described in more detail.
Test 1, SnO2The preparation of graphene room temperature anode material of lithium-ion battery.
A.SnO2The synthesis of graphene nanocomposite material: 250mg SnSO will be added in 15ml pure water4·5H2O makes
Dissolution, stirred evenly with glass bar；The 8ml graphene oxide water solution for being 2mg/ml by gained tin tetrachloride solution and concentration
Mixing.And it is allowed to uniformly mixed using ultrasonic bath concussion half an hour at room temperature, obtain the transparent clear solution of yellowish-brown.
Acquired solution sealing is placed in 50ml water heating kettle, keeps the temperature 24 hours at 150 DEG C.After heat preservation, acquired solution is existed
It is centrifuged under 6500rpm ten minutes, obtains sediment and be put in 18h in 60 DEG C of baking ovens and be dried.
B. tempering: the dried powder of acquisition is placed in atmosphere protection tube furnace, is passed through containing 3vol.%H2H2/
Ar restitutive protection's gas controls gas flow rate in 600ml/min.Five hours are handled at 400 DEG C, it is empty convenient for introducing oxygen
Position defect.
Experiment 2 is not introduced into Lacking oxygen defect SnO2The preparation of graphene nanocomposite material.
A.SnO2The synthesis of graphene nanocomposite material: by 200mg SnSO4·5H2O is dissolved into 15ml pure water, is stirred
It mixes uniformly；Taking 8ml concentration is the graphene oxide water solution of 2mg/ml, is slowly dropped to SnSO4In solution, at room temperature at 25 DEG C
It is placed in ultrasonic bath and shakes 30min, obtain filemot transparent clear solution.It is anti-that the solution of acquisition is packaged in 50ml hydro-thermal
It answers in kettle, is heated to 150 DEG C, heat preservation is for 24 hours.(6500rpm, 10min) is centrifuged in solution after hydro-thermal process, is inclined
Gained sediment is placed in baking oven after supernatant liquor body, 60 DEG C of vacuum drying 18h.
B. tempering: the dried powder of acquisition is placed in atmosphere protection tube furnace, is carried out at tempering at 400 DEG C
Reason, while it being passed through high-purity argon gas, in 600ml/min, handling the time is 3 hours for gas flow rate control.
It is observed that the novel SnO of preparation2Graphene room temperature anode material of lithium-ion battery has typical graphite
The microscopic appearance structure (Fig. 1 (a)) of alkenes nanocomposite, lamellar structure is graphite olefinic constituent, and nanoparticles are
SnO2Particle.Compared with comparative example (Fig. 1 (b)), oxygen-containing vacancy defect SnO made from experiment 12Graphene nanocomposite material
Show more folds and hole on microscopic appearance, reason may be under weak reducing atmosphere graphene oxide by more
Adequately reduction causes more oxygen-containing class group valence links to be broken.It can see by the TEM picture (Fig. 2) of sample, I
The novel SnO for preparing2The SnO of graphene room temperature anode material of lithium-ion battery2Crystal grain shows more fuzzy boundary, leads to
Further looking at for high resolution TEM (HRTEM) is crossed, in SnO2(110) crystal face on there is many cavities, card
Bright Lacking oxygen defect is introduced into；And the SnO of comparative example2Crystal grain then shows more apparent boundary, the Atomic Arrangement on crystal face
More neat, defect is less.X-ray diffraction (XRD) map (Fig. 3) after sample tempering proves to introduce Lacking oxygen defect
SnO2Still typical metasimpsonite structure SnO is showed2.；For SnO2Nanocrystalline component introduces after defect in 473cm-1Position
There is a wave crest, is SnO2EgRaman-active vibrational mode, it was demonstrated that the presence of Lacking oxygen defect.Sample passes through X-ray light
Electron spectrum (XPS) analyzes the bonding state (Fig. 4) of its contained compound, and experimental result further proves that the Sn in sample exists
Valence state (Fig. 4 (b)) other than 4 valences, graphene oxide is in H2More thorough (Fig. 4 (c)) being reduced in/Ar mixed atmosphere, with
And the presence (Fig. 4 (d)) of Lacking oxygen defect.Above experiment conclusion is mutually consistent, sufficiently proves oxygen-containing vacancy defect SnO2-
Graphene nanocomposite material is successfully prepared.
Application experiment 1, novel SnO2The storage sodium performance test of graphene room temperature anode material of lithium-ion battery.
Novel SnO made from 1 being tested2Graphene nanocomposite material and reference examples respectively with PVDF and Super P charcoal
It is black to be mixed in mass ratio for 75:10:15, mixture is adjusted to surface that is thick and being applied to copper foil with N-Methyl pyrrolidone.
Mixture is put in vacuum dry, cuts the electrode of copper foil coating disk that radius is 7.5mm as sodium-ion battery.Wherein
The sodium-ion battery uses NaClO4Concentration is 1mol/L, and the electrolyte and metallic sodium paillon of EC:PC=1:1 is used as to electricity
Pole is assembled into RC2030 type button cell in glove box, carries out constant current charge-discharge in Neware BTS battery test system
Test.The volume test of sodium-ion battery is tested using constant current charge-discharge method, and the current density that when test selects is
40mA/g, charge and discharge potential execute circulation 50 times from 0.05-3V.High rate performance test executes after 50 circulations, the electricity of selection
Current density is respectively 40,100,240,600,1200mA/g, and charge and discharge potential executes circulation from 0.05-3V, every group of current density
10 times.The burn-in test of sodium-ion battery is tested using constant current charge-discharge method, and the current density that when test selects is
40mA/g, charge and discharge potential execute circulation 350 times from 0.05-3V.In conjunction with Fig. 5, Fig. 6 and Fig. 7, it can be seen that, which is used as sodium
When ion battery cathode, shown compared with the not comparative example of oxygen-containing vacancy defect good storage sodium capacity (530mAh/g,
Current density 40mA/g), and high rate performance (391mAh/g, current density 1200mA/g) and cycle life (>=500mAh/g, 300
Circulation).
Test 2, novel SnO2The preparation of graphene room temperature anode material of lithium-ion battery.
A.SnO2The synthesis of graphene nanocomposite material: by 100mg SnSO4·5H2O is dissolved into 15ml pure water, is stirred
It mixes uniformly；Taking 6ml concentration is the graphene oxide water solution of 2mg/ml, is slowly dropped to SnSO4In solution, at room temperature at 25 DEG C
It is placed in ultrasonic bath and shakes 20min, obtain filemot transparent clear solution.It is anti-that the solution of acquisition is packaged in 50ml hydro-thermal
It answers in kettle, is heated to 140 DEG C, heat preservation is for 24 hours.(6000rpm, 10min) is centrifuged in solution after hydro-thermal process, is inclined
Gained sediment is placed in baking oven after supernatant liquor body, 80 DEG C of vacuum drying 12h.
B. tempering: the dried powder of acquisition is placed in atmosphere protection tube furnace, is carried out at tempering at 400 DEG C
Reason, while being passed through containing 8vol.%H2H2/ Ar mixed gas, in 800ml/min, handling the time is 3 small for gas flow rate control
When, to introduce Lacking oxygen defect.
The novel SnO of preparation2Graphene nanocomposite material is similar to experiment 1, has typical graphite alkenes nanometer multiple
The microscopic appearance structure of condensation material, lamellar structure is graphite olefinic constituent, and nanoparticles are SnO2Particle.In microscopic appearance
On show more fold and hole, in SnO2Crystal face on there is many cavities, it was demonstrated that Lacking oxygen defect is introduced into.
When the material is used as sodium-ion battery cathode, shown compared with the not comparative example of oxygen-containing vacancy defect good
Storage sodium capacity (480mAh/g, current density 40mA/g), high rate performance (324mAh/g, current density 1200mA/g) and circulation
Service life (>=430mAh/g, 300 circulations).
Test 3, novel SnO2The preparation of graphene room temperature anode material of lithium-ion battery.
A.SnO2The synthesis of graphene nanocomposite material: by 300mg SnSO4·5H2O is dissolved into 15ml pure water, is stirred
It mixes uniformly；Taking 8ml concentration is the graphene oxide water solution of 2mg/ml, is slowly dropped to SnSO4In solution, at room temperature at 25 DEG C
It is placed in ultrasonic bath and shakes 25min, obtain filemot transparent clear solution.It is anti-that the solution of acquisition is packaged in 50ml hydro-thermal
It answers in kettle, is heated to 150 DEG C, keep the temperature 16h.(6200rpm, 8min) is centrifuged in solution after hydro-thermal process, is inclined
Gained sediment is placed in baking oven after supernatant liquor body, 50 DEG C of vacuum drying 18h.
B. tempering: the dried powder of acquisition is placed in atmosphere protection tube furnace, is carried out at tempering at 500 DEG C
Reason, while being passed through containing 5vol.%H2H2/ Ar mixed gas, in 50ml/min, handling the time is 5 small for gas flow rate control
When, to introduce Lacking oxygen defect.
The oxygen-containing vacancy defect SnO of preparation2Graphene nanocomposite material is similar to experiment 1, has typical graphene
The microscopic appearance structure of class nanocomposite, lamellar structure is graphite olefinic constituent, and nanoparticles are SnO2Particle.?
More fold and hole are showed on microscopic appearance, in SnO2Crystal face on there is many cavities, it was demonstrated that Lacking oxygen lack
It falls into and is introduced into.
Multiple material obtained is when being used as sodium-ion battery cathode, the table compared with the not comparative example of oxygen-containing vacancy defect
Good storage sodium capacity (473mAh/g, current density 40mA/g), high rate performance (311mAh/g, current density are revealed
1200mA/g) and cycle life (>=427mAh/g, 300 circulation).
The novel sodium-ion battery of gained of the invention is being demonstrated by extremely superior application.
Claims (4)
1. a kind of novel SnO2The preparation method of graphene room temperature anode material of lithium-ion battery, it is characterised in that including following step
It is rapid:
Step (1), by 200~300mg SnSO4·5H2O is dissolved into 15ml pure water, is stirred evenly；The oxidation of 2mg/ml is added dropwise
Graphene aqueous solution 6-10ml is in tin tetrachloride solution；Acquired solution is put at room temperature in ultrasonic bath concussion 20~
30min has obtained filemot transparent clear solution；
Acquired solution sealing is placed in 50ml hydrothermal reaction kettle by step (2)；20-24h is kept the temperature at 140-150 DEG C；
Acquired solution is centrifuged step (3), in taking precipitate and baking oven, in 70-80 DEG C of vacuum drying 14-15h；
Powder after drying is put in atmosphere protection tube furnace by step (4), is passed through reducibility gas, and control gas flow rate exists
600-800ml/min, tempering 3~5 hours at 400-600 DEG C have obtained required oxygen-containing vacancy defect SnO2Graphite
Alkene nanocomposite.
2. a kind of novel SnO as described in claim 12The preparation method of graphene room temperature anode material of lithium-ion battery,
It is characterized in that step (1) SnSO4Mass ratio with graphene oxide is (74.3-222.9): (10-20).
3. a kind of novel SnO as described in claim 12The preparation method of graphene room temperature anode material of lithium-ion battery,
It is characterized in that step (3) centrifuge separation parameter is 6000~6500rpm, 8~10min.
4. a kind of novel SnO as described in claim 12The preparation method of graphene room temperature anode material of lithium-ion battery,
It is characterized in that the reducibility gas being passed through in step (4) atmosphere protection tube furnace is to contain 3-8vol.%H2Ar/H2Gaseous mixture.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193006A (en) * | 2020-01-08 | 2020-05-22 | 四川大学 | Nickel-tin alloy-based three-dimensional tin oxide nanoparticle-micron porous nickel-tin compound lithium ion battery cathode and preparation method thereof |
| CN112758976A (en) * | 2020-12-23 | 2021-05-07 | 陕西科技大学 | SnO (stannic oxide)2rGO composite material, preparation method thereof and ethanol sensor based on composite material |
| CN112875745A (en) * | 2021-03-26 | 2021-06-01 | 南京大学 | Monoatomic Ni-coupled SnO with rich oxygen vacancies2Preparation method and application of nanorod |
| CN113851638A (en) * | 2021-08-27 | 2021-12-28 | 华东理工大学 | SnO (stannic oxide)2-xPreparation method and application thereof, and composite electrode |
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| CN106219537A (en) * | 2016-08-30 | 2016-12-14 | 安徽师范大学 | The preparation method of a kind of tin ash/graphene composite material, resistor-type gas sensor |
| CN108630911A (en) * | 2018-03-02 | 2018-10-09 | 杭州电子科技大学 | A kind of SnO of oxygen-containing vacancy defect2Graphene nanocomposite material and application in room temperature sodium-ion battery cathode |
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| CN101638247A (en) * | 2009-08-26 | 2010-02-03 | 福州大学 | Method for preparing tin dioxide nano hollow sphere comprising nano rods and application in lithium battery |
| WO2014068135A1 (en) * | 2012-11-05 | 2014-05-08 | Basf Se | A tin-containing zeolitic material having an mww-type framework structure |
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| CN108630911A (en) * | 2018-03-02 | 2018-10-09 | 杭州电子科技大学 | A kind of SnO of oxygen-containing vacancy defect2Graphene nanocomposite material and application in room temperature sodium-ion battery cathode |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111193006A (en) * | 2020-01-08 | 2020-05-22 | 四川大学 | Nickel-tin alloy-based three-dimensional tin oxide nanoparticle-micron porous nickel-tin compound lithium ion battery cathode and preparation method thereof |
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| CN112758976A (en) * | 2020-12-23 | 2021-05-07 | 陕西科技大学 | SnO (stannic oxide)2rGO composite material, preparation method thereof and ethanol sensor based on composite material |
| CN112875745A (en) * | 2021-03-26 | 2021-06-01 | 南京大学 | Monoatomic Ni-coupled SnO with rich oxygen vacancies2Preparation method and application of nanorod |
| CN113851638A (en) * | 2021-08-27 | 2021-12-28 | 华东理工大学 | SnO (stannic oxide)2-xPreparation method and application thereof, and composite electrode |
| CN113851638B (en) * | 2021-08-27 | 2023-02-10 | 华东理工大学 | SnO (stannic oxide) 2-x Preparation method and application thereof, and composite electrode |
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Application publication date: 20190802 |