CN106450247A - Bismuth metal anode for sodium/potassium ion secondary battery and ether-based electrolyte - Google Patents
Bismuth metal anode for sodium/potassium ion secondary battery and ether-based electrolyte Download PDFInfo
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- CN106450247A CN106450247A CN201610960613.9A CN201610960613A CN106450247A CN 106450247 A CN106450247 A CN 106450247A CN 201610960613 A CN201610960613 A CN 201610960613A CN 106450247 A CN106450247 A CN 106450247A
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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
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0568—Liquid materials characterised by the solutes
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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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0569—Liquid materials characterised by the solvents
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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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0028—Organic electrolyte characterised by the solvent
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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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0028—Organic electrolyte characterised by the solvent
- H01M2300/0037—Mixture of solvents
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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 invention discloses a bismuth metal anode for a sodium/potassium ion secondary battery and ether-based electrolyte. The problems of low capacity, low charge and discharge coulomb efficiency, poor cycling stability of bismuth metal in ester electrolyte and the like of a hard carbon anode of the conventional sodium/potassium ion battery are solved. The adopted ether-based electrolyte comprises an ether organic solvent and an electrolyte salt. With use of an anode material bismuth and ether electrolyte system, the coulomb efficiency and cycling stability of the bismuth metal anode of the sodium/potassium ion secondary battery can be greatly improved. In addition, in the system, the bismuth metal has high specific capacity (-385mAh/g) and high rate performance. Experimental results show that the capacity of a button battery assembled by the bismuth metal anode and ether electrolyte system is hardly attenuated and is still kept about 380mAh/g after 200 charge and discharge cycles under a current density of 400mA/g, and broad application prospect is achieved.
Description
Technical field
The invention belongs to technical field of electrochemistry, and in particular to a kind of sodium ions to potassium ions secondary cell bismuth negative pole and ethers electrolysis
Liquid system.
Background technology
As rich reserves of the sodium in nature (sodium element abundance in the earth's crust is 2.3% 2.8%), sodium and lithium are in week
The factors such as close position in phase table, quick rise with similar physicochemical properties and the lithium prices of raw materials, development
The sodium-ion battery of the cheap and stable cycle performance of development, and the extensive technical field of energy storage of secondary cell is applied to, tool
There are the potentiality of huge commercial value and sustainable use.
The anode material of lithium-ion battery of exploitation mainly has material with carbon element, organic material, non-metal simple-substance, embedded type mistake at present
Cross metal-oxide, alloy etc..But, their generally existing capacity are little, charging/discharging voltage too high (＞ 1V) or close to 0V, follow
Ring stability is poor, the low problem of coulombic efficiency, it is difficult to apply in sodium-ion battery.Conventional alloys are present in charge and discharge process
The big problem of change in volume, causes material electrical contact to be deteriorated serious with capacity attenuation.Therefore, develop a kind of simple, effectively square
Method is had very important significance come the cycle performance and high rate performance for lifting metal material.The present invention uses negative material bismuth,
Ether electrolyte combination with containing sodium salt, obtains the SEI film of good stability, obtains the 385mAh/g, excellent for being close to theory specific volume
The chemical properties such as different cyclical stability, high coulombic efficiency.
Content of the invention：
Present invention aim to address the specific capacity of existing negative material bismuth is little, decay is fast, charge and discharge platform voltage does not conform to
The suitable and low problem of coulombic efficiency, provides a kind of sodium ion secondary battery bismuth negative pole and ethers electrolyte system, and battery capacity is protected
Holdup, coulombic efficiency and high rate performance etc. are obtained for effective lifting.
The technical scheme adopted by solution present invention problem is a kind of sodium-ion battery negative pole bismuth and class ether electricity
Solution liquid, the electrolyte includes ether solvent and sodium salt.
The technical scheme is that：
For the bismuth metal negative pole of sodium ions to potassium ions secondary cell, negative electrode active material is micro-sized metal bismuth granule.With negative
Pole quality of materials fraction 100% is counted, consisting of 80% bismuth meal, 10% conductive black, 10% Kynoar.
Ether electrolyte, including ether solvent and sodium/potassium salt, wherein the mass fraction of ether solvent is 50% 95%,
The mass fraction of sodium/potassium salt is 5% 50%.
Described ether solvent is tetraethyleneglycol dimethyl ether, TRIGLYME, diethylene glycol dimethyl ether, ethylene glycol bisthioglycolate
Any one in methyl ether or the combination in any between them.
Described sodium/potassium salt be trifluoromethyl sulfonate/potassium, sodium hexafluoro phosphate/potassium, sodium perchlorate/potassium, sodium nitrate/potassium,
Any one in bis-trifluoromethylsulfoandimide sodium/potassium, Sodium fluoroborate/potassium or the combination in any between them.
The substance withdrawl syndrome of described sodium/potassium salt is 0.1mol/L 5mol/L.
As the sodium-ion battery that the present invention is provided employs above-mentioned negative material and electrolyte, ionic conduction is improve
Rate, and stable solid electrolyte membrane (SEI film) is formed, after circulation, the particle size of bismuth diminishes, and combines tight between conductive carbon
Close, the space between granule can provide enough spaces to alleviate the volumetric expansion of embedding/removing sodium process, with stable well
Property, improve high rate performance and the cyclical stability of battery.
Description of the drawings
Fig. 1 is that the sodium-ion battery cyclic voltammetry curve figure that embodiment 1 is obtained (sweeps speed：0.1mV/s electrolyte：1mol/L
Trifluoromethyl sulfonate is dissolved in tetraethyleneglycol dimethyl ether)；
Fig. 2 is sodium-ion battery charging and discharging curve figure (the active substance carrying capacity that embodiment 1 is obtained：～2mg/cm2Electric current is close
Degree：400mA/g；Electrolyte：1mol/L trifluoromethyl sulfonate is dissolved in tetraethyleneglycol dimethyl ether)；
Fig. 3 is sodium-ion battery cycle performance figure (the active substance carrying capacity that embodiment 1 is obtained：～2mg/cm2Electric current is close
Degree：400mA/g；Electrolyte：1mol/L trifluoromethyl sulfonate is dissolved in tetraethyleneglycol dimethyl ether)；
Fig. 4 is sodium-ion battery high rate performance figure (the active substance carrying capacity that embodiment 1 is obtained：～2mg/cm2；Electrolyte：
1mol/L trifluoromethyl sulfonate is dissolved in tetraethyleneglycol dimethyl ether)；
Fig. 5 is the sodium-ion battery charging and discharging curve figure that embodiment 2 is obtained；
Fig. 6 is sodium-ion battery cycle performance figure (the active substance carrying capacity that embodiment 2 is obtained：～2mg/cm2Electric current is close
Degree：400mA/g；Electrolyte：1mol/L trifluoromethyl sulfonate is dissolved in TRIGLYME)；
Fig. 7 is the sodium-ion battery charging and discharging curve figure that embodiment 3 is obtained；
Fig. 8 is sodium-ion battery cycle performance figure (the active substance carrying capacity that embodiment 3 is obtained：～2mg/cm2Electric current is close
Degree：400mA/g；Electrolyte：1mol/L trifluoromethyl sulfonate is dissolved in diethylene glycol dimethyl ether)；
Fig. 9 is sodium-ion battery charging and discharging curve figure (the active substance carrying capacity that embodiment 4 is obtained：～2mg/cm2Electric current is close
Degree：400mA/g；Electrolyte：1mol/L trifluoromethyl sulfonate is dissolved in glycol dimethyl ether)；
Figure 10 is sodium-ion battery cycle performance figure (the active substance carrying capacity that embodiment 4 is obtained：～2mg/cm2Electric current is close
Degree：400mA/g；Electrolyte：1mol/L trifluoromethyl sulfonate is dissolved in glycol dimethyl ether)；
Figure 11 is kalium ion battery charging and discharging curve figure (the active substance carrying capacity that embodiment 5 is obtained：～2mg/cm2Electric current
Density：400mA/g；Electrolyte：1mol/L trifluoromethane sulfonic acid potassium is dissolved in glycol dimethyl ether)；
Specific embodiment
The present invention provides a kind of negative material bismuth and a series of energy ether electrolyte matched very well, the electrolyte
Including sodium salt and organic solvent, described organic solvent is tetraethyleneglycol dimethyl ether, TRIGLYME, diethylene glycol diformazan
Any one or a few in ether, glycol dimethyl ether.
Negative electrode active material of the present invention is micro-sized metal bismuth granule.
Sodium salt of the present invention includes trifluoromethyl sulfonate, sodium hexafluoro phosphate, sodium perchlorate, sodium nitrate, double trifluoros
Any one in methylsulfonimide sodium, Sodium fluoroborate or the combination in any between them.
In electrolyte of the present invention, the mass percent concentration of two kinds of components is：The quality of described ether solvent is divided
Number is 50% 95%, and the mass fraction of the sodium salt is 5% 50%.
Sodium salt and organic solvent are proportionally mixed, are stirred by the preparation method of ethers electrolyte of the present invention
After mixing uniformly.The sodium salt is being processed 10 12 hours through 80 120 DEG C of vacuum drying oven using front, to remove in raw material
Moisture.Described organic solvent is used preferably after vacuum distillation and molecular sieve drying eliminating water.Described electrolyte is through molecular sieve
Use after eliminating water further.
With specific embodiment, further detailed description is done to the present invention below by accompanying drawing.
Negative material bismuth used in embodiment is bought in Chemical Reagent Co., Ltd., Sinopharm Group, and purity is not less than
99%, organic solvent, metallic sodium and sodium salt are bought in lark prestige Science and Technology Ltd., and purity is not less than 99%.
Embodiment 1：
The present embodiment provides a kind of sodium-ion battery.
The composition (being counted as 100% with negative material mass fraction) of anode material of lithium-ion battery：80% bismuth meal, 10%
Conductive black, 10% Kynoar.
Sodium-ion battery is metallic sodium to electrode.
The solvent of electrolyte is：Tetraethyleneglycol dimethyl ether.
Electrolytic salt is：Trifluoromethyl sulfonate, its substance withdrawl syndrome in the electrolytic solution is 1mol/L.
The preparation method of battery:
Prepared by negative pole：Each raw material is weighed according to above-mentioned cathode formula, be dispersed in METHYLPYRROLIDONE (NMP)
The mixed slurry of negative pole in solution, is prepared, and slurry is coated on cathodal current copper foil of affluxion body, in vacuum drying oven
110 DEG C of dryings 10 hours, section obtains cathode pole piece.
The preparation of electrolyte：In the glove box full of high-purity argon gas, 1.7206g trifluoromethyl sulphur is weighed with electronic balance
Sour sodium, 10mL tetraethyleneglycol dimethyl ether, 12 hours being stood after stirring, is configured to electrolyte.
By the negative plate of the sodium-ion battery of above-mentioned preparation, electrolyte and sodium piece and other necessary battery components, example
Such as, barrier film (Glass fiber) and shell etc., are assembled into 2032 type button cells.
Charge/discharge capacity test is carried out to battery manufactured in the present embodiment：At normal temperatures, surveyed with Land CT2001A battery
Test system carries out constant current charge-discharge test, and it is 0.1V～2.1V that test voltage is interval.
Fig. 1 is the cyclic voltammetry curve figure for sweeping battery under speed in 0.1mV/s, it can be seen that the second circle and with
In cyclic process afterwards, occur stablizing obvious reduction peak in 0.40V and 0.62V, occur in 0.70V and 0.82V stable obvious
Oxidation peak.
Fig. 2 is the charging and discharging curve figure that the 1st, 2 and 5 are enclosed, and charging and discharging currents density is 400mA/g, first circle specific discharge capacity
For 449.9mAh/g, charge specific capacity is that 382.4mAh/g, first circle coulombic efficiency is up to 85%.
Fig. 3 is the cycle performance figure under electric current density is for 400mA/g, and after 200 circle of circulation, charge specific capacity is
378.3mA/g, capability retention can have 98.9%, and coulombic efficiency reaches more than 99%, it is shown that excellent cycle performance, electrochemistry
Stable performance.
Fig. 4 is the high rate performance figure under different electric current densities, it can be seen that from 5 circulations different multiplying
Capacity is not decayed substantially, circulates 5 times under the electric current density of 2000mA/g, and specific capacity can also reach 225mAh/g, it is seen then that electricity
Pond has extraordinary circulation performance.
Embodiment 2：
The present embodiment provides a kind of sodium-ion battery.
The composition (being counted as 100% with negative material mass fraction) of anode material of lithium-ion battery：80% bismuth meal, 10%
Conductive black, 10% Kynoar.
Sodium-ion battery is metallic sodium to electrode.
The solvent of electrolyte is：TRIGLYME
Electrolytic salt is：Trifluoromethyl sulfonate, its substance withdrawl syndrome in the electrolytic solution is 1mol/L.
The preparation method of battery:
Prepared by negative pole：Each raw material is weighed according to above-mentioned cathode formula, be dispersed in METHYLPYRROLIDONE (NMP)
In solution, the mixed slurry of negative pole is prepared into, and slurry is coated on cathodal current copper foil of affluxion body, in vacuum drying oven
110 DEG C of dryings 10 hours, section obtains cathode pole piece.
The preparation of electrolyte：In the glove box full of high-purity argon gas, 1.7206g trifluoromethyl sulphur is weighed with electronic balance
Sour sodium, 10mL diethylene glycol dimethyl ether, 12 hours being stood after stirring, is configured to electrolyte.
The preparation method of battery：Identical with the preparation method of battery in embodiment 1.
Charge/discharge capacity test is carried out to battery manufactured in the present embodiment：At normal temperatures, surveyed with Land CT2001A battery
Test system carries out constant current charge-discharge test, and it is 0.1V～2.1V that test voltage is interval.
Fig. 5 is the charging and discharging curve figure that the 1st, 2 and 5 are enclosed, and charging and discharging currents density is 400mA/g, first circle specific discharge capacity
For 431.5mAh/g, charge specific capacity is that 363.5mAh/g, first circle coulombic efficiency is up to 84.2%.
Fig. 6 is the cycle performance figure under electric current density is for 400mA/g, and after 100 circle of circulation, charge specific capacity is
368.6mAh/g, coulombic efficiency reaches more than 99%, it is shown that excellent cycle performance, stable electrochemical property.
Embodiment 3：
The present embodiment provides a kind of sodium-ion battery.
The composition (being counted as 100% with negative material mass fraction) of anode material of lithium-ion battery：80% bismuth, 10%
Conductive black, 10% Kynoar.
Sodium-ion battery is metallic sodium to electrode.
The solvent of electrolyte is：Diethylene glycol dimethyl ether
Electrolytic salt is：Trifluoromethyl sulfonate, its substance withdrawl syndrome in the electrolytic solution is 1mol/L.
The preparation method of battery:
Prepared by negative pole：Each raw material is weighed according to above-mentioned cathode formula, be dispersed in METHYLPYRROLIDONE (NMP)
In solution, the mixed slurry of negative pole is prepared into, and slurry is coated on cathodal current copper foil of affluxion body, in vacuum drying oven
110 DEG C of dryings 10 hours, section obtains cathode pole piece.
The preparation of electrolyte：In the glove box full of high-purity argon gas, 1.6795g hexafluorophosphoric acid is weighed with electronic balance
Sodium, 10mL triethylene glycol dimethyl ether., 12 hours being stood after stirring, is configured to electrolyte.
The preparation method of battery：Identical with the preparation method of battery in embodiment 1.
Charge/discharge capacity test is carried out to battery manufactured in the present embodiment：At normal temperatures, surveyed with Land CT2001A battery
Test system carries out constant current charge-discharge test, and it is 0.1V～2.1V that test voltage is interval.
Fig. 7 is the charging and discharging curve figure that the 1st, 2 and 5 are enclosed, and charging and discharging currents density is 400mA/g, first circle specific discharge capacity
For 436.8mAh/g, charge specific capacity is that 373.5mAh/g, first circle coulombic efficiency is up to 85.5%.
Fig. 8 is the cycle performance figure under electric current density is for 400mA/g, and after 200 circle of circulation, charge specific capacity is
368.3mAh/g, coulombic efficiency reaches more than 99%, it is shown that excellent cycle performance, stable electrochemical property.
Embodiment 4：
The present embodiment provides a kind of sodium-ion battery.
The composition (being counted as 100% with negative material mass fraction) of anode material of lithium-ion battery：80% bismuth, 10%
Conductive black, 10% Kynoar.
Sodium-ion battery is metallic sodium to electrode.
The solvent of electrolyte is：Glycol dimethyl ether
Electrolytic salt is：Trifluoromethyl sulfonate, its substance withdrawl syndrome in the electrolytic solution is 1mol/L.
The preparation method of battery:
Prepared by negative pole：Each raw material is weighed according to above-mentioned cathode formula, be dispersed in METHYLPYRROLIDONE (NMP)
In solution, the mixed slurry of negative pole is prepared into, and slurry is coated on cathodal current copper foil of affluxion body, in vacuum drying oven
110 DEG C of dryings 10 hours, section obtains cathode pole piece.
The preparation of electrolyte：In the glove box full of high-purity argon gas, 1.7206g trifluoromethyl sulphur is weighed with electronic balance
Sour sodium, 10mL glycol dimethyl ether, 12 hours being stood after stirring, is configured to electrolyte.
The preparation method of battery：Identical with the preparation method of battery in embodiment 1.
Charge/discharge capacity test is carried out to battery manufactured in the present embodiment：At normal temperatures, surveyed with Land CT2001A battery
Test system carries out constant current charge-discharge test, and it is 0.1V～2.1V that test voltage is interval.
Fig. 9 is the charging and discharging curve figure that the 1st, 2 and 5 are enclosed, and charging and discharging currents density is 400mA/g, first circle specific discharge capacity
For 438.4mAh/g, charge specific capacity is that 380.0mAh/g, first circle coulombic efficiency is up to 86.7%.
Figure 10 is the cycle performance figure under electric current density is for 400mA/g, and after 100 circle of circulation, charge specific capacity is
303.3mAh/g, coulombic efficiency reaches more than 99%, it is shown that excellent cycle performance, stable electrochemical property.
Embodiment 5：
The present embodiment provides a kind of kalium ion battery.
The composition (being counted as 100% with negative material mass fraction) of kalium ion battery negative material：80% bismuth, 10%
Conductive black, 10% Kynoar.
Kalium ion battery is metallic potassium to electrode.
The solvent of electrolyte is：Glycol dimethyl ether
Electrolytic salt is：Trifluoromethane sulfonic acid potassium, its substance withdrawl syndrome in the electrolytic solution is 0.5mol/L.
The preparation method of battery:
Prepared by negative pole：Each raw material is weighed according to above-mentioned cathode formula, be dispersed in METHYLPYRROLIDONE (NMP)
In solution, the mixed slurry of negative pole is prepared into, and slurry is coated on cathodal current copper foil of affluxion body, in vacuum drying oven
110 DEG C of dryings 10 hours, section obtains cathode pole piece.
The preparation of electrolyte：In the glove box full of high-purity argon gas, 0.9409g trifluoromethyl sulphur is weighed with electronic balance
Sour potassium, 10mL glycol dimethyl ether, 12 hours being stood after stirring, is configured to electrolyte.
The preparation method of battery：Identical with the preparation method of battery in embodiment 1.
Charge/discharge capacity test is carried out to battery manufactured in the present embodiment：At normal temperatures, surveyed with Land CT2001A battery
Test system carries out constant current charge-discharge test, and it is 0.1V～2.1V that test voltage is interval.
Figure 11 is the charging and discharging curve figure that the 1st, 2 and 5 are enclosed, and charging and discharging currents density is 400mA/g, first circle specific discharge capacity
For 369.8mAh/g, charge specific capacity is that 364.1mAh/g, first circle coulombic efficiency is up to 98.5%.
It will be clear that the invention is not restricted to embodiment here, those skilled in the art according to the announcement of the present invention,
The conspicuously improved and modification that is made by present inventive concept all should be within protection scope of the present invention.
Claims (6)
1. the bismuth metal negative pole of sodium ions to potassium ions secondary cell is used for, it is characterised in that：Negative electrode active material is micro-sized metal bismuth
Granule.
2. the bismuth metal negative pole for sodium ions to potassium ions secondary cell according to claim 1, it is characterised in that：With negative pole
Quality of materials fraction 100% is counted, consisting of 80% bismuth meal, 10% conductive black, 10% Kynoar.
3. ether electrolyte, it is characterised in that：Including ether solvent and sodium/potassium salt, the mass fraction of wherein ether solvent is
50% 95%, the mass fraction of sodium/potassium salt is 5% 50%.
4. ether electrolyte according to claim 3, it is characterised in that：Described ether solvent is TEG diformazan
Any one in ether, TRIGLYME, diethylene glycol dimethyl ether, glycol dimethyl ether or any group between them
Close.
5. ether electrolyte according to claim 3, it is characterised in that：Described sodium/potassium salt be trifluoromethyl sulfonate/
Potassium, sodium hexafluoro phosphate/potassium, sodium perchlorate/potassium, sodium nitrate/potassium, bis-trifluoromethylsulfoandimide sodium/potassium, in Sodium fluoroborate/potassium
Any one or the combination in any between them.
6. the ether electrolyte according to claim 3 or 5, it is characterised in that：The substance withdrawl syndrome of described sodium/potassium salt
For 0.1mol/L 5mol/L.
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Cited By (10)
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| CN108232161A (en) * | 2018-01-12 | 2018-06-29 | 南开大学 | A kind of full battery of sodium ion |
| WO2018152755A1 (en) * | 2017-02-23 | 2018-08-30 | 深圳先进技术研究院 | Secondary battery and preparation method therefor |
| CN109860578A (en) * | 2019-03-20 | 2019-06-07 | 暨南大学 | Application of the artificial gold-grapheme material collaboration ethers electrolyte in kalium ion battery |
| CN110556581A (en) * | 2018-05-31 | 2019-12-10 | 中国科学院福建物质结构研究所 | Concentrated electrolyte system suitable for potassium ion battery |
| CN110783586A (en) * | 2019-11-21 | 2020-02-11 | 华南师范大学 | High-power-density primary battery electrolyte and preparation method and application thereof |
| CN111933918A (en) * | 2020-06-28 | 2020-11-13 | 武汉理工大学 | Preparation method of two-dimensional metal bismuth and application of two-dimensional metal bismuth in sodium/potassium ion secondary battery |
| CN112599361A (en) * | 2020-12-14 | 2021-04-02 | 湖南大学 | Wide-temperature-range high-performance electrochemical energy storage device based on bismuth-based electrode |
| CN113140723A (en) * | 2021-03-02 | 2021-07-20 | 复旦大学 | Wide-temperature-range sodium ion battery based on metal bismuth cathode |
| CN116072973A (en) * | 2023-03-06 | 2023-05-05 | 河北工业大学 | High-voltage potassium ion battery ether electrolyte and application thereof |
| WO2024007143A1 (en) * | 2022-07-05 | 2024-01-11 | 宁德时代新能源科技股份有限公司 | Secondary battery, battery module, battery pack, and electrical device |
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