CN110350198A - A kind of preparation method of sodium phosphate surface modification sodium-ion battery positive material - Google Patents

A kind of preparation method of sodium phosphate surface modification sodium-ion battery positive material Download PDF

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CN110350198A
CN110350198A CN201910666226.8A CN201910666226A CN110350198A CN 110350198 A CN110350198 A CN 110350198A CN 201910666226 A CN201910666226 A CN 201910666226A CN 110350198 A CN110350198 A CN 110350198A
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sodium
ion battery
surface modification
battery positive
positive material
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CN110350198B (en
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徐凯琪
钟国彬
王超
伍世嘉
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Guangdong Power Grid Co Ltd
Electric Power Research Institute of Guangdong Power Grid Co Ltd
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Electric Power Research Institute of Guangdong Power Grid Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/054Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/58Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/5825Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624Electric conductive fillers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/628Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M2004/026Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/028Positive electrodes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

The present invention relates to sodium-ion battery field of material technology more particularly to a kind of preparation methods of sodium phosphate surface modification sodium-ion battery positive material.The present invention provides a kind of preparation methods of sodium phosphate surface modification sodium-ion battery positive material, including step 1: reducing agent is added in sodium source, vanadium source and phosphorus source and dispersant ball milling obtains mix powder;Step 2: the mix powder being pre-sintered to obtain vanadium phosphate sodium presoma;Step 3: dispersing progress ultrasound in deionized water solution for the vanadium phosphate sodium presoma and obtain suspension, phosphorus source solution is added to the suspension;Step 4: product, sodium source and dispersing agent progress ball milling mixing are sintered to obtain sodium phosphate surface modification sodium-ion battery positive material.The present invention provides a kind of preparation methods of sodium phosphate surface modification sodium-ion battery positive material, can effectively solve the less technical problem of the surface modification method type of existing sodium-ion battery positive material.

Description

A kind of preparation method of sodium phosphate surface modification sodium-ion battery positive material
Technical field
The present invention relates to sodium-ion battery field of material technology more particularly to a kind of sodium phosphate surface modification sodium-ion batteries The preparation method of positive electrode.
Background technique
In recent years, since sodium element has many advantages, such as resourceful, widely distributed, at low cost, increasingly mature sodium ion Battery is increasingly becoming the research hotspot of energy storage field.Sodium-ion battery positive material is the important component of sodium-ion battery, Wherein polyanionic compound vanadium phosphate sodium Na3V2(PO4)3As sodium-ion battery positive material, there is ideal specific volume Amount, voltage platform and cyclical stability, to have received widespread attention.Na3V2(PO4)3Belong to sodium superionic conductors material, Its structural framework forms stable storage sodium vacancy, and open three-dimensional ionic transport passages are conducive to improve the expansion of sodium ion It dissipates.
Na3V2(PO4)3In spite of the above plurality of advantages, but its electronic conductivity is lower, has seriously affected electrochemistry Energy.In order to solve Na3V2(PO4)3The problem of intrinsic poorly conductive, effective method are that synthesis has nanostructure Na3V2(PO4)3, much research is improved by nano materials such as synthesis nano particle, 1-dimention nano fiber, three-dimensional porous structures Material electronics electric conductivity not only can be improved in material property, this material with special nanostructure, also shortens ion biography Defeated path is conducive to the insertion and abjection of sodium ion.In addition to this, there is good electron conduction at one layer of its surface modification Material, such as carbon coating can improve Na3V2(PO4)3Electric conductivity, while can be reduced material again and being contacted with the direct of electrolyte, Inhibit the volume change in electrode material charge and discharge process, improves material high rate performance and cyclical stability.Sodium phosphate is a kind of Good sodium ion conductor material is conducive to the deintercalation of sodium ion, but utilizes sodium phosphate to sodium-ion battery positive material phosphorus There is not been reported for the surface modified research of sour vanadium sodium.
Summary of the invention
In view of this, the present invention provides a kind of preparation method of sodium phosphate surface modification sodium-ion battery positive material, It can effectively solve the less technical problem of the surface modification method type of existing sodium-ion battery positive material.
The present invention provides a kind of preparation methods of sodium phosphate surface modification sodium-ion battery positive material, including following step It is rapid:
Step 1: reducing agent and dispersant 5~15h of ball milling being added in sodium source, vanadium source and phosphorus source, is ground after dry Obtain mix powder;
Step 2: the mix powder being pre-sintered under atmosphere of inert gases, vanadium phosphate sodium is obtained after being cooled to room temperature Presoma;
Step 3: dispersing progress ultrasound in deionized water solution for the vanadium phosphate sodium presoma and obtain suspension, by phosphorus Source solution is added in the suspension, after being evaporated deionized water at 80-100 DEG C, and dry 8~20 at 100-120 DEG C Hour obtains product;
Step 4: the product, the sodium source and dispersing agent being subjected to ball milling mixing, carried out under the atmosphere of inert gas It is sintered and cooled to room temperature up to sodium phosphate surface modification sodium-ion battery positive material.
Preferably, the sodium source is one or more of sodium acetate, sodium carbonate, sodium nitrate, sodium hydroxide.
Preferably, the vanadium source in step 1 be vanadic anhydride, ammonium metavanadate, vanadic sulfate, vanadyl acetylacetonate and One or more of vanadyl oxalate.
Preferably, phosphorus source described in step 1 and step 3 be ammonium dihydrogen phosphate, it is diammonium hydrogen phosphate, ammonium phosphate, phosphoric acid, secondary One or more of phosphoric acid, and the concentration range of phosphorus source solution described in step 3 is 0.0002-0.1mol/L.
Preferably, the reducing agent in step 1 is one of oxalic acid, citric acid, tartaric acid, ascorbic acid or several Kind;
The molar ratio of the vanadium phosphate sodium and the reducing agent is 1:(1-5).
Preferably, the dispersing agent is one of water, ethyl alcohol, acetone;
The molar ratio of the vanadium phosphate sodium and the dispersing agent is 1:(0.1-5).
Preferably, the temperature of the pre-sintering is 300~600 DEG C;
The time of the pre-sintering is 3-8h.
Preferably, the temperature of the sintering is 400~900 DEG C;
The time of the sintering is 5~15h.
Preferably, the molar ratio of sodium source described in step 4 and phosphorus source is (3~3.15): 1.
Preferably, inert gas described in step 2 and step 4 is in nitrogen, argon gas, nitrogen and hydrogen mixture or argon hydrogen gaseous mixture One kind.
Compared with prior art, the invention has the advantages that and technical effect:
The present invention is reacted by simple solid-phase ball milling, surface modification and high temperature solid-phase sintering, prepares sodium phosphate surface The sodium-ion battery positive material of modification, sodium phosphate have good sodium ion conductive capability, are more conducive to after surface modification The deintercalation of sodium ion.Compared with traditional carbon coating layer, sodium phosphate finishing coat can not only reduce the electrification of material interface Impedance is learned, sacrifice agent is also used as, with HF and H micro in electrolyte2O reacts, and reduces HF and H in electrolyte2O Content, therefore reduce electrode material and electrolyte and side reaction occur, keep stable structure, thus improve its cycle performance and High rate performance.In addition, the raw material of preparation method of the present invention are easy to get, easy to operate, at low cost, favorable reproducibility, be able to satisfy sodium from The various needs of sub- battery practical application, can be realized industrialization large-scale production.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described.
Fig. 1 is the X-ray diffraction of sodium phosphate surface modification sodium-ion battery positive material made from the embodiment of the present invention 1 Figure;
Fig. 2 is the SEM figure of sodium phosphate surface modification sodium-ion battery positive material made from the embodiment of the present invention 1;
Fig. 3 is sodium phosphate surface modification sodium-ion battery positive material made from the embodiment of the present invention and comparative example at 1C times First charge-discharge under rate recycles correlation curve;
Fig. 4 is sodium phosphate surface modification sodium-ion battery positive material made from the embodiment of the present invention and comparative example at 1C times Multiple charge and discharge cycles curve under rate;
Fig. 5 is sodium phosphate surface modification sodium-ion battery positive material made from the embodiment of the present invention 1 and comparative example not Charging and discharging curve under same multiplying;
Fig. 6 is the SEM figure of sodium phosphate surface modification sodium-ion battery positive material made from comparative example 1.
Specific embodiment
The embodiment of the invention provides a kind of preparation methods of sodium phosphate surface modification sodium-ion battery positive material, can have The less technical problem of the surface modification method type of the existing sodium-ion battery positive material of effect solution.
The technical scheme in the embodiments of the invention will be clearly and completely described below.
Embodiment 1
(1) according to synthesis 0.1mol Na3V2(PO4)3Elemental mole ratios, weigh the inclined vanadium of 15.90g sodium carbonate, 23.40g 19.21g citric acid is added in sour ammonium, 34.51g ammonium dihydrogen phosphate, is scattered in 50mL dehydrated alcohol, and ball milling 10h is obtained after dry Mix powder.
(2) mix powder is put into tube furnace, under nitrogen and hydrogen mixture atmosphere, 350 DEG C of pre-sintering 4h are cooled to room Grinding obtains vanadium phosphate sodium presoma after temperature.
(3) it disperses vanadium phosphate sodium presoma in 100mL deionized water solution, ultrasound 1 hour obtains suspension, claims It takes the ammonium dihydrogen phosphate of 0.1g that the phosphorus source solution for being made into 0.05mol/L is added in deionized water, configured phosphorus source solution is dripped It is added in suspension, it is 8 hours dry at 100 DEG C after being evaporated deionized water at 80 DEG C.
(4) product and 0.14g sodium carbonate obtained step (3) carries out ball milling mixing, then adds the mixing of 50mL ethyl alcohol Ball milling 8 hours, mixture is put into tube furnace after dry, under nitrogen and hydrogen mixture atmosphere, 12h is sintered at 700 DEG C, is cooled to Room temperature is up to sodium phosphate surface modification sodium-ion battery positive material Na3V2(PO4)3/Na3PO4
Fig. 1 is the X-ray diffraction of sodium phosphate surface modification sodium-ion battery positive material made from the embodiment of the present invention 1 Figure, as shown in Figure 1, the present embodiment products therefrom maintain vanadium phosphate sodium structure, and crystallinity is high, no miscellaneous phase.
Fig. 2 is the SEM figure of sodium phosphate surface modification sodium-ion battery positive material made from the embodiment of the present invention 1, by Fig. 2 It is found that particle size distribution is uniform, rough surface illustrates successfully in surface modification sodium phosphate.
Fig. 3 is sodium phosphate surface modification sodium-ion battery positive material made from the embodiment of the present invention 1 under 1C multiplying power First charge-discharge cyclic curve, as shown in figure 3, carrying out charge and discharge in 2.0-4.0V voltage range at 25 DEG C with 1C multiplying power When circulation, discharge capacity is 106.4mAh/g to the sodium-ion battery positive material vanadium phosphate sodium of sodium phosphate surface modification for the first time.
Fig. 4 is sodium phosphate surface modification sodium-ion battery positive material made from the embodiment of the present invention 1 under 1C multiplying power Multiple charge and discharge cycles curve, as shown in figure 4, discharge capacity is 101.2mAh/g after 500 circle of circulation, capacity retention ratio is 95.1%, it is shown that excellent cyclical stability.
Fig. 5 is sodium phosphate surface modification sodium-ion battery positive material made from the embodiment of the present invention 1 under different multiplying Charging and discharging curve, as shown in figure 5, the charge and discharge under 0.5C, 1C, 2C, 5C, 10C, 15C multiplying power, sodium phosphate surface modification sodium from The specific discharge capacity of sub- battery positive pole material phosphoric acid vanadium sodium is respectively 122.6,106.3,94.6,80.7,62.8,45.0mAh/g, Present good high rate performance.
Embodiment 2
(1) according to synthesis 0.05mol Na3V2(PO4)3Elemental mole ratios, weigh 20.41g sodium acetate trihydrate, 9.1g five 9.00g oxalic acid is added in V 2 O, 19.81g diammonium hydrogen phosphate, is scattered in 25mL acetone, and ball milling 5h is mixed after dry Object powder.
(2) mix powder is put into tube furnace, under nitrogen atmosphere, 400 DEG C of pre-sintering 5h are ground after being cooled to room temperature Mill obtains vanadium phosphate sodium presoma.
(3) it disperses vanadium phosphate sodium presoma in 80mL deionized water solution, ultrasound 0.5 hour obtains suspension, claims It takes the diammonium hydrogen phosphate of 0.2g that the phosphorus source solution for being made into 0.01mol/L is added in deionized water, configured phosphorus source solution is dripped It is added in suspension, it is 8 hours dry at 110 DEG C after being evaporated deionized water at 90 DEG C;
(4) by step (3) obtain product and 0.62g sodium acetate trihydrate carry out ball milling mixing, then add 100mL go from Mixture is put into tube furnace after dry, under inertia or reproducibility atmosphere, is sintered at 750 DEG C by sub- water mixing and ball milling 6 hours 15h is cooled to room temperature up to sodium phosphate surface modification sodium-ion battery positive material vanadium phosphate sodium.
At 25 DEG C, when charge and discharge cycles are carried out in 2.0-4.0V voltage range with 1C multiplying power, sodium phosphate surface modification Discharge capacity is 105.9mAh/g to sodium-ion battery positive material vanadium phosphate sodium for the first time, and discharge capacity is after 500 circle of circulation 103.5mAh/g, capacity retention ratio 97.7%, it is shown that excellent cyclical stability.In 0.5C, 1C, 2C, 5C, 10C, 15C Charge and discharge under multiplying power, the specific discharge capacity of sodium phosphate surface modification sodium-ion battery positive material vanadium phosphate sodium is respectively 120.5, 105.3,97.6,89.7,75.8,60.5mAh/g, present good high rate performance.
Embodiment 3
(1) according to synthesis 0.2mol Na3V2(PO4)3Elemental mole ratios, weigh 24.00g sodium hydroxide, 106.06g second 35.22g ascorbic acid is added in acyl acetone vanadyl, 89.45g ammonium phosphate, is scattered in 100mL deionized water, ball milling 15h, after dry Obtain mix powder.
(2) mix powder is put into tube furnace, under argon atmosphere, 500 DEG C of pre-sintering 8h are ground after being cooled to room temperature Mill obtains vanadium phosphate sodium presoma.
(3) it disperses vanadium phosphate sodium presoma in 150mL deionized water, ultrasound 2 hours obtains suspension, weighs 1g Ammonium phosphate be added in deionized water and be made into the phosphorus source solution of 0.1mol/L, configured phosphorus source solution is added drop-wise to suspension In, it is 8 hours dry at 120 DEG C after being evaporated deionized water at 100 DEG C;
(4) product and 0.80g sodium hydroxide obtained step (3) carries out ball milling mixing, then adds the anhydrous second of 150mL Alcohol mixing and ball milling 20 hours, mixture is put into tube furnace after dry, under argon atmosphere, 10h is sintered at 800 DEG C, it is cooling To room temperature up to sodium phosphate surface modification sodium-ion battery positive material.
At 25 DEG C, when charge and discharge cycles are carried out in 2.0-4.0V voltage range with 1C multiplying power, sodium phosphate surface modification Discharge capacity is 110.5mAh/g to sodium-ion battery positive material for the first time, and discharge capacity is 106.7mAh/g after 500 circle of circulation, is held Measuring conservation rate is 96.5%, it is shown that excellent cyclical stability.The charge and discharge under 0.5C, 1C, 2C, 5C, 10C, 15C multiplying power, The specific discharge capacity of sodium phosphate surface modification sodium-ion battery positive material is respectively 125.7,110.8,100.5,91.2, 75.6,66.1mAh/g has good high rate performance.
Comparative example 1
(1) according to synthesis 0.1mol Na3V2(PO4)3Elemental mole ratios, weigh the inclined vanadium of 15.90g sodium carbonate, 23.40g 19.21g citric acid is added in sour ammonium, 34.51g ammonium dihydrogen phosphate, is scattered in 50mL ethyl alcohol, and ball milling 10h is mixed after dry Object powder.
(2) mix powder is put into tube furnace, under nitrogen and hydrogen mixture atmosphere, 350 DEG C of pre-sintering 4h, at 700 DEG C It is sintered 12h, is cooled to room temperature up to sodium-ion battery positive material Na3V2(PO4)3
Fig. 6 is the SEM figure of sodium phosphate surface modification sodium-ion battery positive material made from comparative example 1, can from Fig. 6 Particle size distribution is uniform out.
At 25 DEG C, when charge and discharge cycles are carried out in 2.0-4.0V voltage range with 1C multiplying power, sodium-ion battery anode Discharge capacity is 95.5mAh/g (as shown in Figure 3) to material phosphoric acid vanadium sodium for the first time, and discharge capacity is only after 500 circle of circulation 76.7mAh/g, capacity retention ratio are 80.3% (as shown in Figure 4).The charge and discharge under 0.5C, 1C, 2C, 5C, 10C, 15C multiplying power, The specific discharge capacity of sodium-ion battery positive material vanadium phosphate sodium is respectively 109.7,92.5,80.2,62.7,38.7,7.7mAh/ G (as shown in Figure 5).
Obviously, as described above, described embodiments are only a part of the embodiments of the present invention, rather than whole implementation Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts Every other embodiment, shall fall within the protection scope of the present invention.

Claims (10)

1. a kind of preparation method of sodium phosphate surface modification sodium-ion battery positive material, which comprises the following steps:
Step 1: reducing agent and dispersant 5~15h of ball milling being added in sodium source, vanadium source and phosphorus source, grinds and obtains after dry Mix powder;
Step 2: the mix powder being pre-sintered under atmosphere of inert gases, vanadium phosphate sodium forerunner is obtained after being cooled to room temperature Body;
Step 3: progress ultrasound in deionized water solution, which is dispersed, by the vanadium phosphate sodium presoma obtains suspension, phosphorus source is molten Liquid is added in the suspension, after being evaporated deionized water at 80-100 DEG C, and it is 8~20 hours dry at 100-120 DEG C Obtain product;
Step 4: the product, the sodium source and dispersing agent are subjected to ball milling mixing, are sintered under the atmosphere of inert gas, It is cooled to room temperature up to sodium phosphate surface modification sodium-ion battery positive material.
2. the preparation method of sodium phosphate surface modification sodium-ion battery positive material according to claim 1, feature exist In the sodium source is one or more of sodium acetate, sodium carbonate, sodium nitrate, sodium hydroxide.
3. the preparation method of sodium phosphate surface modification sodium-ion battery positive material according to claim 1, feature exist In the vanadium source in step 1 is in vanadic anhydride, ammonium metavanadate, vanadic sulfate, vanadyl acetylacetonate and vanadyl oxalate It is one or more of.
4. the preparation method of sodium phosphate surface modification sodium-ion battery positive material according to claim 1, feature exist In, phosphorus source described in step 1 and step 3 be one of ammonium dihydrogen phosphate, diammonium hydrogen phosphate, ammonium phosphate, phosphoric acid, hypophosphorous acid or It is several, and the concentration of phosphorus source solution described in step 3 is 0.0002-0.1mol/L.
5. the preparation method of sodium phosphate surface modification sodium-ion battery positive material according to claim 1, feature exist In reducing agent described in step 1 is one or more of oxalic acid, citric acid, tartaric acid, ascorbic acid;
The molar ratio of the vanadium phosphate sodium and the reducing agent is 1:(1-5).
6. the preparation method of sodium phosphate surface modification sodium-ion battery positive material according to claim 1, feature exist In the dispersing agent is one of water, ethyl alcohol, acetone;
The molar ratio of the vanadium phosphate sodium and the dispersing agent is 1:(0.1-5).
7. the preparation method of sodium phosphate surface modification sodium-ion battery positive material according to claim 1, feature exist In the temperature of the pre-sintering is 300~600 DEG C;
The time of the pre-sintering is 3-8h.
8. the preparation method of sodium phosphate surface modification sodium-ion battery positive material according to claim 1, feature exist In the temperature of the sintering is 400~900 DEG C;
The time of the sintering is 5-15h.
9. the preparation method of sodium phosphate surface modification sodium-ion battery positive material according to claim 1, feature exist In the molar ratio of sodium source described in step 4 and phosphorus source is (3~3.15): 1.
10. the preparation method of sodium phosphate surface modification sodium-ion battery positive material according to claim 1, feature exist In inert gas described in step 2 and step 4 clock is one of nitrogen, argon gas, nitrogen and hydrogen mixture or argon hydrogen gaseous mixture.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111009661A (en) * 2019-12-24 2020-04-14 攀枝花学院 Flexible self-supporting Na3(VO)2(PO4)2F material and preparation method and application thereof
CN111082058A (en) * 2019-12-20 2020-04-28 华南理工大学 Nasicon structure sodium titanium phosphate surface modified P2 type manganese-based sodium ion battery positive electrode material and preparation method thereof
CN111439737A (en) * 2020-03-10 2020-07-24 西安交通大学 Vanadium-based sodium oxyfluorophosphate type sodium battery positive electrode material and modified preparation method thereof
CN114335529A (en) * 2021-11-05 2022-04-12 四川龙蟒磷化工有限公司 Preparation method of vanadium sodium phosphate type sodium battery positive electrode material
CN116081594A (en) * 2023-02-23 2023-05-09 武汉工程大学 Preparation method of sodium ion battery anode material
CN116262635A (en) * 2021-12-15 2023-06-16 浙江钠创新能源有限公司 Modified sodium nickel manganese oxide electrode material, sodium ion battery, preparation method and application
WO2024197434A1 (en) * 2023-03-24 2024-10-03 广东邦普循环科技有限公司 Modified sodium ion positive electrode material, preparation method therefor, and use thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2472655A1 (en) * 2006-12-15 2012-07-04 Tokyo Ohka Kogyo Co., Ltd. Negative electrode base member
CN103000884A (en) * 2011-09-16 2013-03-27 中国科学院物理研究所 Vanadium sodium phosphate composite material as well as preparation method and application thereof
CN103151493A (en) * 2013-03-12 2013-06-12 北京理工大学 Lithium phosphate coated lithium iron phosphate electrode and preparation method thereof
CN105140468A (en) * 2015-06-26 2015-12-09 武汉大学 Preparation method for cathode material Na3V2(PO4)3/C of sodium ion battery
CN107039653A (en) * 2015-11-04 2017-08-11 丰田自动车株式会社 Nonaqueous Electrolytic Solution Secondary Battery
CN107611367A (en) * 2017-08-04 2018-01-19 中南大学 A kind of porous spherical carbon coating vanadium phosphate sodium composite positive pole and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2472655A1 (en) * 2006-12-15 2012-07-04 Tokyo Ohka Kogyo Co., Ltd. Negative electrode base member
CN103000884A (en) * 2011-09-16 2013-03-27 中国科学院物理研究所 Vanadium sodium phosphate composite material as well as preparation method and application thereof
CN103151493A (en) * 2013-03-12 2013-06-12 北京理工大学 Lithium phosphate coated lithium iron phosphate electrode and preparation method thereof
CN105140468A (en) * 2015-06-26 2015-12-09 武汉大学 Preparation method for cathode material Na3V2(PO4)3/C of sodium ion battery
CN107039653A (en) * 2015-11-04 2017-08-11 丰田自动车株式会社 Nonaqueous Electrolytic Solution Secondary Battery
CN107611367A (en) * 2017-08-04 2018-01-19 中南大学 A kind of porous spherical carbon coating vanadium phosphate sodium composite positive pole and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
秦来芬 等: "《新一代动力锂离子电池磷酸锰锂正极材料的研究现状与展望》", 《电化学》 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111082058A (en) * 2019-12-20 2020-04-28 华南理工大学 Nasicon structure sodium titanium phosphate surface modified P2 type manganese-based sodium ion battery positive electrode material and preparation method thereof
CN111082058B (en) * 2019-12-20 2023-03-21 华南理工大学 Nasicon structure sodium titanium phosphate surface modified P2 type manganese-based sodium ion battery positive electrode material and preparation method thereof
CN111009661A (en) * 2019-12-24 2020-04-14 攀枝花学院 Flexible self-supporting Na3(VO)2(PO4)2F material and preparation method and application thereof
CN111009661B (en) * 2019-12-24 2022-02-08 攀枝花学院 Flexible self-supporting Na3(VO)2(PO4)2F material and preparation method and application thereof
CN111439737A (en) * 2020-03-10 2020-07-24 西安交通大学 Vanadium-based sodium oxyfluorophosphate type sodium battery positive electrode material and modified preparation method thereof
CN111439737B (en) * 2020-03-10 2021-11-30 西安交通大学 Vanadium-based sodium oxyfluorophosphate type sodium battery positive electrode material and preparation method thereof
CN114335529A (en) * 2021-11-05 2022-04-12 四川龙蟒磷化工有限公司 Preparation method of vanadium sodium phosphate type sodium battery positive electrode material
CN114335529B (en) * 2021-11-05 2024-01-26 四川龙蟒磷化工有限公司 Preparation method of vanadium sodium phosphate type sodium battery positive electrode material
CN116262635A (en) * 2021-12-15 2023-06-16 浙江钠创新能源有限公司 Modified sodium nickel manganese oxide electrode material, sodium ion battery, preparation method and application
CN116081594A (en) * 2023-02-23 2023-05-09 武汉工程大学 Preparation method of sodium ion battery anode material
WO2024197434A1 (en) * 2023-03-24 2024-10-03 广东邦普循环科技有限公司 Modified sodium ion positive electrode material, preparation method therefor, and use thereof

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