CN109244314A - A kind of sodium-ion battery ceramic diaphragm and sodium ion secondary battery and application - Google Patents
A kind of sodium-ion battery ceramic diaphragm and sodium ion secondary battery and application Download PDFInfo
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- CN109244314A CN109244314A CN201810933542.2A CN201810933542A CN109244314A CN 109244314 A CN109244314 A CN 109244314A CN 201810933542 A CN201810933542 A CN 201810933542A CN 109244314 A CN109244314 A CN 109244314A
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/431—Inorganic material
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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
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
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- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
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Abstract
The invention discloses a kind of sodium-ion battery ceramic diaphragm and sodium ion secondary battery and application, the sodium-ion battery ceramic diaphragm includes: diaphragm matrix and the ceramic powder coating at least on the side surface coated on the diaphragm matrix;The diaphragm matrix with a thickness of 1-100um;It is described ceramics powder coating with a thickness of 0.5-10um;The ceramics powder coating is sodium ion solid electrolyte powder composition, specifically includes Na-Beta-Al2O3And/or sodium superionic conductors NASICON material.By using the ceramic powders coating with sodium ion conductance, the wellability with cyclic carbonate solvents is improved, therefore while the security performance for improving diaphragm, also improve the cycle performance of battery.
Description
Technical field
The present invention relates to lithium battery material technical field more particularly to a kind of sodium-ion battery ceramic diaphragms and sodium ion two
Primary cell and application.
Background technique
Lithium ion battery has obtained large-scale application in the field 3C with high-energy density and power density because of it,
The lithium resource scarcity problem exposed gradually obtains the attention of people.The physicochemical properties of sodium and lithium are close, and the reserves of sodium
It enriches and is evenly distributed, therefore sodium-ion battery is considered as ' candidate ' of next-generation energy-storage battery.
As in lithium ion battery, sodium-ion battery is also broadly divided into three anode, electrolyte, cathode parts, and
Major function is to separate anode and cathode to prevent short circuit to diaphragm wherein.The performance of diaphragm will have a direct impact on the characteristic of battery,
Such as capacity, internal resistance, multiplying power and circulation.
In the electrolyte of common sodium-ion battery, cyclic carbonate is because have high dielectric constant as can not
The selection lacked, but common diaphragm in the market, such as common polyalkene diaphragm and aluminium oxide apply diaphragm, exist pair
The poor disadvantage of the wellability of cyclic carbonate.
In addition, existing frequently-used polyalkene diaphragm can occur to be heat-shrinked to which to directly result in battery short when the temperature rises
Security risk is brought on road.
Therefore, lack at present and urgently propose that one kind can improve to the wellability of cyclic carbonate and highly-safe
Diaphragm.
Summary of the invention
The present invention provides a kind of sodium-ion battery ceramic diaphragm and its secondary cell and applications.Sodium provided by the invention from
Diaphragm safety can be improved in sub- cell ceramic diaphragm, at the same solve that current diaphragm faces with cyclic carbonate is nonwettable asks
Topic.
In a first aspect, the embodiment of the invention provides a kind of sodium-ion battery ceramic diaphragm, the sodium-ion battery ceramics
Diaphragm includes: diaphragm matrix and the ceramic powder coating at least on the side surface coated on the diaphragm matrix;The diaphragm
Matrix with a thickness of 1-100um;It is described ceramics powder coating with a thickness of 0.5-10um;The ceramics powder coating is specially sodium ion
Solid electrolyte powder is constituted, including Na-Beta-Al2O3And/or sodium superionic conductors NASICON material.
Preferably, the diaphragm matrix includes one in polythene PE diaphragm, polypropylene PP diaphragm or PP/PE/PP diaphragm
Kind is several.
Preferably, the Na-Beta-Al2O3General formula is M2O ﹒ yAl2O3, wherein M be Na, or for Na and K, Rb, Ag,
One or more of Li, Mg, Y, Ti, Nb doped chemical, 5≤y≤11, space group are P63/mmc or R3m.
Preferably, the NASICON material general formula is Na1+xZr2Si2-xPxO12, 0≤x≤3, space group R-3c.
It is further preferred that the Na1+xZr2Si2-xPxO12In the position Zr there is cationic substitution element, including Al, As,
One of Cd, Co, Cr, Fe, Ga, Ge, Hf, In, La, Lu, Mg, Mn, Mo, Nb, Ni, Sb, Sc, Si, Sn, Ta, Ti, V, Y, Zn
Or it is a variety of;Si/P have substitution element As and/or Ge.
Preferably, the partial size of the sodium ion solid electrolyte powder is 1nm-5um.
It is further preferred that the partial size of the sodium ion solid electrolyte powder is 0.01-1um.
Second aspect, the embodiment of the invention provides it is a kind of comprising sodium-ion battery ceramics described in above-mentioned first aspect every
The sodium ion secondary battery of film.
The third aspect, the embodiment of the invention provides a kind of use of sodium ion secondary battery as described in above-mentioned second aspect
On the way, the sodium ion secondary battery is used for electric tool, electric vehicle and solar power generation, wind-power electricity generation, smart grid tune
Peak, the energy storage device for being distributed power station, backup power supply or communication base station.
The sodium-ion battery ceramic diaphragm of the embodiment of the present invention is applied by using the ceramic powders with sodium ion conductance
It covers, while the security performance for improving diaphragm, also improves the cycle performance of battery.The sodium-ion battery ceramic diaphragm mentions
The wellability with cyclic carbonate solvents is risen.The power supply that can be not only used for electric tool and electric car, can be also used for
Solar power generation, wind-power electricity generation, smart grid peak regulation, the extensive energy storage device for being distributed power station, backup power supply or communication base station.
Detailed description of the invention
Below by drawings and examples, the technical solution of the embodiment of the present invention is described in further detail.
Fig. 1 is 1 scanning electron microscope diagram of sodium-ion battery ceramic diaphragm that the embodiment of the present invention 2 provides;
Fig. 2 is that the sodium-ion battery ceramic diaphragm 1 that the embodiment of the present invention 2 provides and cyclic carbonate solvents infiltrate result
Figure;
Fig. 3 is the internal resistance figure that the sodium-ion battery ceramic diaphragm 1 that the embodiment of the present invention 2 provides assembles battery;
Fig. 4 is 2 scanning electron microscope diagram of sodium-ion battery ceramic diaphragm that the embodiment of the present invention 3 provides;
Fig. 5 is that the sodium-ion battery ceramic diaphragm 2 that the embodiment of the present invention 3 provides and cyclic carbonate solvents infiltrate result
Figure;
Fig. 6 is the internal resistance figure that the sodium-ion battery ceramic diaphragm 2 that the embodiment of the present invention 3 provides assembles battery;
Fig. 7 infiltrates result figure without coating diaphragm and cyclic carbonate solvents for what comparative example 1 of the present invention provided;
Fig. 8 is the internal resistance figure without coating diaphragm that comparative example 1 of the present invention provides;
Fig. 9 is that the common aluminium oxide that comparative example 2 of the present invention provides applies diaphragm and cyclic carbonate solvents infiltrate result figure;
Figure 10 is the internal resistance figure without coating diaphragm that comparative example 2 of the present invention provides.
Specific embodiment
Below with reference to embodiment, the present invention is further described in detail, but is not intended to limit guarantor of the invention
Protect range.
The embodiment of the invention provides a kind of sodium-ion battery ceramic diaphragms, comprising: diaphragm matrix and at least coated on every
Ceramic powder coating on one side surface of film matrix;
Diaphragm matrix with a thickness of 1-100um;Ceramic powder coating with a thickness of 0.5-10um;Ceramic powder coating is specially sodium
Ion solid electrolyte powder is constituted, including Na-Beta-Al2O3 and/or sodium superionic conductors (NASICON) material.
Wherein, Na-Beta-Al2O3General formula is M2O ﹒ yAl2O3, wherein M be Na, or for Na and K, Rb, Ag, Li, Mg,
Y, one or more of Ti, Nb doped chemical, 5≤y≤11, space group are P63/mmc or R3m.
NASICON material general formula is Na1+xZr2Si2-xPxO12, 0≤x≤3, space group R-3c;Wherein, Na1+xZr2Si2- xPxO12In the position Zr can be carried out with other cation elements part replace replacement, including Al, As, Cd, Co, Cr, Fe, Ga,
One of Ge, Hf, In, La, Lu, Mg, Mn, Mo, Nb, Ni, Sb, Sc, Si, Sn, Ta, Ti, V, Y, Zn or a variety of;Si/P can
Part is carried out by As and/or Ge and replaces replacement.
The partial size of sodium ion solid electrolyte powder is 1nm-5um, preferably 0.01-1um.
Diaphragm matrix includes: one of polyethylene (PE) diaphragm, polypropylene (PP) diaphragm or PP/PE/PP diaphragm or several
Kind.
Sodium-ion battery ceramic diaphragm of the invention is applied in sodium ion secondary battery, by using with sodium ion electricity
The ceramic powders coating led, while the security performance for improving diaphragm, also improves the cycle performance of battery.The sodium ion
Cell ceramic diaphragm improves the wellability with cyclic carbonate solvents.It can be not only used for the electricity of electric tool and electric car
Source can be also used for the big of solar power generation, wind-power electricity generation, smart grid peak regulation, distribution power station, backup power supply or communication base station
Scale energy storage device.
Below with some specific embodiments, sodium-ion battery ceramic diaphragm of the invention and its application and performance are carried out
Explanation.
Embodiment 1
The sodium ion soft-package battery that the present embodiment is used to illustrate to use sodium-ion battery ceramic diaphragm provided by the invention
Preparation method.
The preparation of anode: the solvent N-methyl pyrilidone (NMP) of 100 parts by weight being added into blender, and 3 parts by weight are viscous
Agent Kynoar (PVDF) powder is tied, is stirred 2 hours with 30 revs/min of revolution, 3000 revs/min of rotation;Add 4 weight
The regulator ethanedioic acid of part conductive agent acetylene black and 0.2 parts by weight, is stirred 1 hour;Then 100 parts by weight positive electrode active materials are added
Matter O3-Na0.9[Cu0.22Fe0.30Mn0.48]O2Stirring 2 hours crosses 200 meshes, required sodium-ion battery is being made just by deaeration
Pole slurry.
The anode sizing agent of above-mentioned obtained sodium-ion battery is coated uniformly on 20 microns thick aluminium by the way of slurry
On foil, drying, is cut into anode pole piece at tabletting.
The preparation of cathode: by 100 parts by weight negative electrode active material soft carbons, 3 parts by weight of binder butadiene-styrene rubber (SBR), 3 weights
Amount part carboxymethyl cellulose (CMC) is added in the water of 50 parts by weight, and then stirring formation is stablized, uniformly in de-airing mixer
Negative electrode slurry.The negative electrode slurry is uniformly coated on copper foil, through 120 DEG C of drying, rollings, is cut into cathode pole piece.
The preparation of battery: by above-mentioned anode pole piece, selected diaphragm (it is different in specific example, respectively referring to following implementation
Example 2,3 and comparative example 1,2), cathode pole piece stacks gradually into the electrode group that capacity is 1Ah, is fitted into battery case.Electrolyte component
For the carbonic allyl ester solution of 1 mole of every liter of sodium hexafluoro phosphate, electrolyte is injected in battery case with the amount of 7g/Ah, makes electrode
Piece complete wetting, is assembled into experiment soft-package battery, and flexible package sodium-ion battery is made in sealing.
Testing impedance: it stands after battery liquid-filling and is tested afterwards using impedance instrument for 24 hours.
Embodiment 2
The present embodiment is used to illustrate the sodium ion Soft Roll electricity that the preparation method provided using the embodiment of the present invention 1 is prepared
The performance in pond.
The sodium ion soft-package battery that 1Ah is prepared according to the method in embodiment 1, the sodium-ion battery ceramics used every
Film is the polypropylene diaphragm of NASICON coating, and used electrolyte is Na3.4Zr1.8Mg0.2Si2PO12, particle size is
200nm, applied thickness 2um.
Electron-microscopic analysis is scanned to sodium-ion battery ceramic diaphragm first, it is evident that particle point from Fig. 1
Cloth is uniform.
Secondly, carrying out analyzing with the wellability of cyclic carbonate to it.Draw a small amount of propene carbonate (PC) drop in every
On film, as shown in Figure 2, it can be clearly seen that wellability is very good, and diaphragm becomes transparent.
And the diaphragm without coating does not then infiltrate PC substantially in following comparative examples 1, shows droplet-like.Even comparative example
The diaphragm of aluminium oxide coating in 2, shows droplet-like after PC is added dropwise, wellability is poor.
Internal resistance analysis before finally carrying out soft-package battery charge and discharge, by Fig. 3 it can be seen that, compared to comparative example 1 and right
Ratio 2, the internal resistance of the present embodiment battery have obtained very big optimization, this has benefited from diaphragm to the good wetting property of PC.
Embodiment 3
The present embodiment is used to illustrate the sodium ion Soft Roll electricity that the preparation method provided using the embodiment of the present invention 1 is prepared
The performance in pond.
The sodium ion soft-package battery of 1Ah is prepared according to the method in embodiment 1, the diaphragm used is β-Al2O3Coating
Polypropylene diaphragm, used electrolyte be Na1.67Al10.67Li0.33O17, particle size 300nm, applied thickness is
2um。
Electron-microscopic analysis is scanned to it first, it is evident that even particle distribution from Fig. 4.
Secondly, carrying out analyzing with the wellability of cyclic carbonate to it.Draw a small amount of propene carbonate (PC) drop in every
On film, by Fig. 5 this it appears that wellability is very good, diaphragm becomes transparent.
And the diaphragm in comparative example 1 without coating does not then infiltrate PC substantially, shows droplet-like.Oxidation in comparative example 2
The diaphragm of aluminium coating, shows droplet-like after PC is added dropwise, wellability is poor.
Internal resistance analysis before finally carrying out soft-package battery charge and discharge, by Fig. 6, it can be seen that, internal resistance is about 0.3 Europe, is compared
In ohms up to a hundred of comparative example 1 and comparative example 2, internal resistance has obtained very big optimization, this has benefited from good infiltration of the diaphragm to PC
Performance.
Comparative example 1
The sodium ion soft-package battery of 1Ah is prepared according to the method in embodiment 1, the diaphragm used is plain polypropylene
Diaphragm, without coating.
As shown in fig. 7, polypropylene diaphragm does not infiltrate substantially with PC, prepared soft-package battery in terms of the wellability with PC
With the internal resistance for being greater than 150 Europe, as shown in figure 8, therefore battery can not work.
Comparative example 2
The sodium ion soft-package battery of 1Ah is prepared according to the method in embodiment 1, the diaphragm used is common aluminium oxide
The polypropylene diaphragm of coating, particle size 200nm, applied thickness 2um.
From the point of view of the wellability with PC, the diaphragm of common aluminium oxide ceramics coating is difficult to infiltrate with PC, shows obvious liquid
Drop-wise, as shown in Figure 9.But compared to without coating diaphragm, hence it is evident that have some improvement.In terms of soft-package battery internal resistance, such as Figure 10
It is shown, although resistance value still has up to more than 120 Europe, battery can not work compared to commonly decreasing without coating diaphragm.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (9)
1. a kind of sodium-ion battery ceramic diaphragm, which is characterized in that the sodium-ion battery ceramic diaphragm include: diaphragm matrix and
Ceramic powder coating at least on the side surface coated on the diaphragm matrix;The diaphragm matrix with a thickness of 1-100um;
It is described ceramics powder coating with a thickness of 0.5-10um;The ceramics powder coating is specially that sodium ion solid electrolyte powder is constituted,
Including Na-Beta-Al2O3And/or sodium superionic conductors NASICON material.
2. sodium-ion battery ceramic diaphragm according to claim 1, which is characterized in that the diaphragm matrix includes polyethylene
One or more of PE diaphragm, polypropylene PP diaphragm or PP/PE/PP diaphragm.
3. sodium-ion battery ceramic diaphragm according to claim 1, which is characterized in that the Na-Beta-Al2O3General formula is
M2O ﹒ yAl2O3, wherein M be Na, or be one or more of Na and K, Rb, Ag, Li, Mg, Y, Ti, Nb doped chemical, 5
≤ y≤11, space group are P63/mmc or R3m.
4. sodium-ion battery ceramic diaphragm according to claim 1, which is characterized in that the NASICON material general formula is
Na1+xZr2Si2-xPxO12, 0≤x≤3, space group R-3c.
5. sodium-ion battery ceramic diaphragm according to claim 4, which is characterized in that the Na1+xZr2Si2-xPxO12In
Zr have a cationic substitution element, including Al, As, Cd, Co, Cr, Fe, Ga, Ge, Hf, In, La, Lu, Mg, Mn, Mo, Nb,
One of Ni, Sb, Sc, Si, Sn, Ta, Ti, V, Y, Zn or a variety of;Si/P have substitution element As and/or Ge.
6. sodium-ion battery ceramic diaphragm according to claim 1, which is characterized in that the sodium ion solid electrolyte powder
The partial size at end is 1nm-5um.
7. sodium-ion battery ceramic diaphragm according to claim 6, which is characterized in that the sodium ion solid electrolyte powder
The partial size at end is 0.01-1um.
8. a kind of sodium ion secondary battery comprising any sodium-ion battery ceramic diaphragm of the claims 1-7.
9. a kind of purposes of such as above-mentioned sodium ion secondary battery according to any one of claims 8, which is characterized in that the sodium ion is secondary
Battery is for electric tool, electric vehicle and solar power generation, wind-power electricity generation, smart grid peak regulation, distribution power station, standby electricity
The energy storage device of source or communication base station.
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Cited By (4)
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CN110970589A (en) * | 2019-11-28 | 2020-04-07 | 中国电力科学研究院有限公司 | Sodium ion battery diaphragm, preparation method and sodium ion battery |
CN110970588A (en) * | 2019-12-18 | 2020-04-07 | 江苏厚生新能源科技有限公司 | Coating diaphragm for sodium ion battery, preparation method of coating diaphragm and sodium ion battery |
CN113113730A (en) * | 2021-04-01 | 2021-07-13 | 溧阳中科海钠科技有限责任公司 | Sodium ion battery ceramic diaphragm and preparation method thereof, and sodium ion battery and preparation method thereof |
CN113675533A (en) * | 2021-06-29 | 2021-11-19 | 东莞凯德新能源有限公司 | Composite coating sodium ion battery diaphragm and preparation method thereof |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110970589A (en) * | 2019-11-28 | 2020-04-07 | 中国电力科学研究院有限公司 | Sodium ion battery diaphragm, preparation method and sodium ion battery |
CN110970588A (en) * | 2019-12-18 | 2020-04-07 | 江苏厚生新能源科技有限公司 | Coating diaphragm for sodium ion battery, preparation method of coating diaphragm and sodium ion battery |
CN113113730A (en) * | 2021-04-01 | 2021-07-13 | 溧阳中科海钠科技有限责任公司 | Sodium ion battery ceramic diaphragm and preparation method thereof, and sodium ion battery and preparation method thereof |
CN113675533A (en) * | 2021-06-29 | 2021-11-19 | 东莞凯德新能源有限公司 | Composite coating sodium ion battery diaphragm and preparation method thereof |
CN113675533B (en) * | 2021-06-29 | 2023-12-01 | 东莞凯德新能源有限公司 | Composite coating sodium ion battery diaphragm and preparation method thereof |
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