CN107069087A - It is a kind of to be applicable high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof - Google Patents
It is a kind of to be applicable high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof Download PDFInfo
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- CN107069087A CN107069087A CN201611070827.5A CN201611070827A CN107069087A CN 107069087 A CN107069087 A CN 107069087A CN 201611070827 A CN201611070827 A CN 201611070827A CN 107069087 A CN107069087 A CN 107069087A
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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
- H01M10/0567—Liquid materials characterised by the additives
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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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
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention belongs to lithium-ion battery electrolytes field, it is related to and a kind of is applicable high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof.The electrolyte of the present invention is made up of lithium salts, organic solvent and additive.A kind of high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof that is applicable that the present invention is provided solves the problem of lithium iron phosphate dynamic battery high temperature cyclic performance is poor, low temperature discharge capacity is low, meet lithium iron phosphate dynamic battery to the performance requirement under high and low temperature environment.
Description
Technical field
The invention belongs to lithium-ion battery electrolytes field, it is related to a kind of high/low temperature electricity for being applicable lithium iron phosphate dynamic battery
Solve liquid and preparation method thereof.
Background technology
Lithium-ion-power cell has the advantages that voltage is high, specific energy is big, service life length, security are good, environmentally friendly, turns into
The main flow of electrical source of power.Application requirement of the lithium-ion-power cell on electric automobile and space flight energy storage device its have it is good
High temperature performance, i.e. high temperature cyclic performance and low temperature performance.
However, LiFePO4 (the LiFePO commonly used at present4) electrokinetic cell high temperature performance be badly in need of improve.LiFePO4
Electrokinetic cell cryogenic property is poor, is on the one hand because LiFePO4The Pnmb spaces group structure of itself, is on the other hand because low
Reduction, the increase of electrode interface membrane impedance and the increase of charge-transfer resistance of the lower electrolytic conductivity of temperature cause the electric discharge of battery
Capacity is reduced.Therefore, the solvent of low melting point, low viscosity, high-k and electrical conductivity is developed, electrolyte can be improved by searching out
The additive of matching, interface transitivity with lithium ion battery plus-negative plate, which turns into, solves lithium iron phosphate dynamic battery cryogenic property
The method of problem.At high temperature, LiFePO4Positive electrode and LiPF6Electrolyte occurs oxidation reaction and causes the analysis of Fe ions
Go out, the SEI films of negative pole formation are corroded by dissolved destruction and plus plate current-collecting body aluminium foil by the HF that electrolyte and water react generation
Result in LiFePO4Electrokinetic cell influences the cycle performance of battery with the rising of temperature, capacity rapid decay.Therefore, find
To effective high temperature additive, passivating film effectively can be formed as solution in both positive and negative polarity Surface Creation SEI films, on aluminium foil
The method of lithium iron phosphate dynamic battery high temperature performance issues.
In summary, design and be adapted to the high/low temperature electrolyte of lithium iron phosphate dynamic battery and dicyandiamide solution and need to have from optimization
Considered on the additive of effect, so as to ensure lithium iron phosphate dynamic battery high temperature cyclic performance and low temperature performance.
The content of the invention
It is an object of the invention to provide a kind of high/low temperature electrolyte for being applicable lithium iron phosphate dynamic battery and its preparation side
Method.
What the present invention was realized in：
A kind of high/low temperature electrolyte for being applicable lithium iron phosphate dynamic battery, the electrolyte is by lithium salts, organic solvent and addition
Agent is constituted.Wherein, lithium salts is the mixture of lithium hexafluoro phosphate or lithium hexafluoro phosphate and LiBF4, and organic solvent is carbonic acid
Ester, additive is vinylene carbonate, three kinds of compounds of fluorinated ethylene carbonate and di-oxalate lithium borate.In dry inert gas
Under protection, system temperature is controlled at -10~0 DEG C, by the carbonate solvent of appropriate lithium salts dissolving after purification, is configured to
Concentration is 0.8mol/L~1.3mol/L lithium salt solution.Adding for organic solvent quality 0.3~15% is added in lithium salt solution
Plus agent, prepare the high/low temperature electrolyte for being applicable lithium iron phosphate dynamic battery.
The present invention prepares a kind of applicable LiFePO4 power electric by the selection optimization of lithium salts, organic solvent and additive
The high/low temperature electrolyte in pond.
The lithium salts is lithium hexafluoro phosphate (LiPF6) or lithium hexafluoro phosphate and LiBF4 (LiBF4) mixture, two
Person's mass ratio is 10~7:0~3.The present invention fully meets the height of lithium iron phosphate dynamic battery using lithium hexafluoro phosphate as lithium salts
Low temperature property requirements.In view of LiPF6Heat endurance is poor, at relatively high temperatures decomposable asymmetric choice net, and generates hydrofluoric acid with water reaction, from
And corrode plus plate current-collecting body aluminium foil, reduce the high temperature cyclic performance of battery.LiBF4It is with good heat endurance and quick to moisture
The low advantage of sensitivity, adds a small amount of LiBF4Plus plate current-collecting body aluminium foil can be protected, suppresses the corrosion to aluminium foil.Meanwhile, LiBF4
Small with viscosity, charge transfer impedance is low, the electrolyte low temperature performance well of preparation.
The organic solvent is carbonate based organic solvent.Carbonic ester is the mixing of linear carbonate and cyclic carbonate
Thing, wherein linear carbonate content >=50vol%.The linear carbonate is dimethyl carbonate (DMC), diethyl carbonate
(DEC), the mixture of methyl ethyl carbonate (EMC), wherein DMC contents >=50vol%, the mixing of both DEC, EMC arbitrary proportion, always
Content ＜ 50vol%.The cyclic carbonate is ethylene carbonate (EC), the mixture of propene carbonate (PC), and wherein EC contains
Amount >=50vol%.The present invention is using solvent of five kinds of carbonate mixtures as electrolyte.EC has higher dielectric constant,
Lithium salts can be made fully to dissolve or ionize, and can in the excellent SEI films of carbon material surface forming properties, be in electrolyte can not or
Scarce component.But, fusing point and viscosity higher EC limits its application at low temperature.PC is similar to EC structures, same tool
There is higher dielectric constant so that lithium salts fully dissolves or ionized, and has relatively low fusing point.The present invention is using a certain amount of
PC replaces part EC, the fusing point of solvent is reduced, so as to improve the cryogenic property of electrolyte.Comparatively speaking, DMC, DEC and EMC
With relatively low dielectric constant, but it has relatively low viscosity and fusing point, and the viscosity of electrolyte can be reduced and molten as cosolvent
Point.Composition of the invention by optimizing above-mentioned five kinds of carbonic esters, reduces the viscosity of electrolyte, improves lithium ion mobility speed
Between contradiction, making the electrolyte of preparation has good cryogenic property.
The concentration of the lithium salt solution is 0.8~1.3mol/L.
The additive is vinylene carbonate (VC), fluorinated ethylene carbonate (FEC) and di-oxalate lithium borate (LiBOB)
Three kinds of compounds.Addition VC quality is that 0.1%~5%, FEC of organic solvent quality quality is organic solvent quality
0.1%~5%, LiBOB quality are the 0.1%~5% of organic solvent quality.Adding VC can be in graphite cathode Surface Creation
SEI films, reduce the loss of lithium ion, and can suppress LiFePO under high temperature4Middle Fe precipitation, the high temperature for improving battery is followed
Ring performance.Add FEC generations SEI films are more uniform, smooth, densification, reduce the impedance at low temperature of SEI films and graphite cathode
Electrode reaction resistance at low temperature, improves the LiF contents in SEI films, improves the cryogenic property of battery.LiBOB heat is steady
It is qualitative good, in plus plate current-collecting body aluminium foil surface formation passivating film, and it can suppress in positive and negative pole material Surface Creation SEI films
LiFePO4Middle Fe precipitation, improves the high-temperature behavior of electrolyte.In addition, LiBOB is inhibited in the SEI that negative terminal surface is formed
PC and lithium ion altogether molten embedded graphite cathode and peel off the effect of graphite.LiBOB addition can improve the high/low temperature of electrolyte
Performance.The present invention improves the high and low temperature of lithium iron phosphate dynamic battery by adding above-mentioned three kinds of additives, optimization composition content
Energy.
Organic solvent (i.e. carbonic ester) purifying refers to solvent removal of impurities and water removal.Solvent removal of impurities and the preferential use of water removalMolecular sieve orMolecular sieve or the two any molecular sieve than mixing.
The dry inert atmosphere water content is less than 10ppm, the system temperature during appropriate lithium salts is slowly added to
Control should be at -10 DEG C~0 DEG C.
The beneficial effects of the invention are as follows：
LiPF6The high/low temperature demand of lithium iron phosphate dynamic battery is fully met as lithium salts, a small amount of LiBF is added4Can be with
Plus plate current-collecting body aluminium foil is protected, suppresses the corrosion to aluminium foil, the high temperature cyclic performance of battery is improved.Meanwhile, a small amount of LiBF4Can
To reduce the viscosity of electrolyte, charge transfer impedance is reduced, the cryogenic property of electrolyte is improved.Optimize EC, PC, DMC, DEC and
The composition of five kinds of carbonic esters of EMC, solves the electrolyte concentration of lithium ion and system viscosity, lithium ion mobility speed at low temperature
Between contradiction, making the electrolyte of preparation has good cryogenic property.Adding VC, FEC and LiBOB can be in LiFePO4, stone
Black negative terminal surface generates uniform, smooth, fine and close SEI films, in plus plate current-collecting body aluminium foil surface formation passivating film, suppresses under high temperature
LiFePO4Middle Fe precipitation, reduces the electrification of impedance and graphite cathode at low temperature of graphite cathode surface SEI films at low temperature
Reaction impedance is learned, the loss of lithium ion is reduced, the high temperature cyclic performance of battery is improved.In addition, the addition of additive can be improved
LiF contents in SEI films, and suppress PC and lithium ion altogether molten embedded graphite cathode and peel off the effect of graphite, improve battery
Cryogenic property.
A kind of high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof that is applicable that the present invention is provided is solved
The problem of lithium iron phosphate dynamic battery high temperature cyclic performance is poor, low temperature discharge capacity is low, meets pair of lithium iron phosphate dynamic battery
Performance requirement under high and low temperature environment.
Brief description of the drawings
Nothing
Embodiment
With reference to embodiment, the present invention is described further.
Embodiment 1
EC, PC, EMC, DMC, DEC are usedMolecular sieve removes water 24h, is then 1 according to volume ratio:1:2:1:1 be made have
Machine solvent；In the glove box full of argon gas, at -3 DEG C, by LiPF6It is slowly dissolved in organic solvent, compound concentration is 1M's
Lithium salt solution.VC, 3% FEC and 5% LiBOB of organic solvent quality 1% are added in the lithium salt solution prepared, is prepared
Obtain electrolyte.
With LiFePO4For positive electrode, Delanium is negative material, using the commercial barrier films of Celgard, adds what is prepared
High/low temperature electrolyte, prepares 18Ah LiFePO4The full battery of/graphite.
Under -20 DEG C of low temperature, the discharge capacities of battery 1C multiplying powers is 63% of room temperature discharge capacity under same multiplying power.At 60 DEG C
Under high temperature, after battery 3C rate charge-discharges are circulated through 200 times, battery capacity conservation rate 92%.After 55 DEG C of high-temperature storage 7 days,
The internal resistance of cell, which becomes, turns to 11%, and thickness change is 0.22%, and capability retention is 98%, and capacity restoration rate is 97%.
Embodiment 2
EC, PC, DMC, DEC and EMC are usedMolecular sieve removes water 24h, is then 2 according to volume ratio:2:2:1:1 is made
Organic solvent；At 0 DEG C, by LiPF6It is slowly dissolved in organic solvent, compound concentration is 1.2M lithium salt solution.What is prepared
VC, 3% FEC and 5% LiBOB of organic solvent quality 1% are added in lithium salt solution, electrolyte is prepared.
Embodiment 3
EC, PC, DMC, DEC and EMC are usedMolecular sieve removal of impurities is removed water, and is then 2 according to volume ratio:1:2:1:1 is made
Organic solvent.At -5 DEG C, by LiPF6It is slowly dissolved in organic solvent, compound concentration is 1.3M lithium salt solution.What is prepared
VC, 0.1% FEC and 3% LiBOB of organic solvent quality 0.1% are added in lithium salt solution, electrolyte is prepared.
Embodiment 4
EC, PC, DMC, DEC and EMC are usedMolecular sieve removal of impurities is removed water, and is then 1 according to volume ratio:1:2:1:1 is made
Organic solvent.At -5 DEG C, by LiPF6It is slowly dissolved in organic solvent, compound concentration is 1.3M lithium salt solution.What is prepared
VC, 1% FEC and 2% LiBOB of organic solvent quality 0.1% are added in lithium salt solution, electrolyte is prepared.
Embodiment 5
EC, PC, DMC, DEC and EMC are usedMolecular sieve removal of impurities is removed water, and is then 2 according to volume ratio:1:2:1:1 is made
Organic solvent.At -5 DEG C, by LiPF6It is slowly dissolved in organic solvent, compound concentration is 1.3M lithium salt solution.What is prepared
VC, 1% FEC and 1%LiBOB of organic solvent quality 1% are added in lithium salt solution, electrolyte is prepared.
Embodiment 6
EC, PC, EMC, DMC, DEC are usedMolecular sieve removes water 24h, is then 3 according to volume ratio:1:2:1:1 be made have
Machine solvent；In the glove box full of argon gas, at -3 DEG C, by LiPF6It is slowly dissolved in organic solvent, compound concentration is 1.3M
Lithium salt solution.VC, 0.1% FEC and 0.2% of organic solvent quality 0.1% are added in the lithium salt solution prepared
LiBOB, prepares electrolyte.
Embodiment 7
EC, PC, EMC, DMC, DEC are usedMolecular sieve removes water 24h, is then 2 according to volume ratio:1:3:1:1 be made have
Machine solvent；In the glove box full of argon gas, at -3 DEG C, by LiPF6It is slowly dissolved in organic solvent, compound concentration is 1M's
Lithium salt solution.VC, 4% FEC and 5%LiBOB of organic solvent quality 4% are added in the lithium salt solution prepared, is prepared into
To electrolyte.
Embodiment 8
EC, PC, EMC, DMC, DEC are usedMolecular sieve removes water 24h, is then 1 according to volume ratio:1:2:1:1 be made have
Machine solvent；In the glove box full of argon gas, at -3 DEG C, by LiPF6It is slowly dissolved in organic solvent, compound concentration is 1M's
Lithium salt solution.VC, 2% FEC and 2%LiBOB of organic solvent quality 2% are added in the lithium salt solution prepared, is prepared into
To electrolyte.
Claims (7)
1. a kind of be applicable high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof, it is characterised in that：The electrolyte
Include lithium salts, organic solvent and additive；In certain temperature range, under dry inert gas protection, organic solvent is purified
Afterwards, it is slowly added to appropriate lithium salts；In obtained lithium salt solution, add appropriate additive and prepare a kind of applicable ferric phosphate
The high/low temperature electrolyte of lithium dynamical battery.
2. according to claim 1 be applicable high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof, it is special
Levy and be：The lithium salts is the mixture of lithium hexafluoro phosphate or lithium hexafluoro phosphate and LiBF4, both mass ratioes are 10~
7:0~3.
3. according to claim 1 be applicable high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof, it is special
Levy and be：The organic solvent is carbonate based organic solvent；Carbonic ester is the mixture of linear carbonate and cyclic carbonate,
Wherein linear carbonate content >=50vol%；The linear carbonate is dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate
Mixture, wherein DMC addition >=50vol%, the mixing of both diethyl carbonate, methyl ethyl carbonate arbitrary proportion, always
Content ＜ 50vol%；The cyclic carbonate is ethylene carbonate, the mixture of propene carbonate, and wherein ethylene carbonate contains
Amount >=50vol%.
4. according to claim 1 be applicable high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof, it is special
Levy and be：The concentration of the lithium salt solution is 0.8~1.3mol/L.
5. according to claim 1 be applicable high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof, it is special
Levy and be：The quality of the additive is organic solvent quality 0.3~15%；The additive is vinylene carbonate, fluoro
Three kinds of compounds of ethylene carbonate and di-oxalate lithium borate；The quality for adding vinylene carbonate is organic solvent quality
0.1%~5%, the quality of fluorinated ethylene carbonate is the 0.1%~5% of organic solvent quality, the quality of di-oxalate lithium borate
It is the 0.1%~5% of organic solvent quality.
6. according to claim 1 be applicable high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof, it is special
Levy and be：The organic solvent purifying refers to solvent removal of impurities and water removal；Solvent removal of impurities and the preferential use of water removalMolecular sieve orMolecular sieve or the two any molecular sieve than mixing.
7. according to claim 1 be applicable high/low temperature electrolyte of lithium iron phosphate dynamic battery and preparation method thereof, it is special
Levy and be：The dry inert atmosphere water content is less than 10ppm, the system temperature control during appropriate lithium salts is slowly added to
System should be at -10 DEG C~0 DEG C.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107959054A (en) * | 2017-12-25 | 2018-04-24 | 湖北环天高科新能源有限公司 | A kind of power battery electrolyte |
| CN108336406A (en) * | 2018-01-16 | 2018-07-27 | 河南师范大学 | A kind of lithium ion battery Low ESR high voltage additive and nonaqueous electrolytic solution |
| CN108767318A (en) * | 2018-05-24 | 2018-11-06 | 国联汽车动力电池研究院有限责任公司 | A kind of lithium salt electrolyte containing additive |
| CN111048832A (en) * | 2019-10-21 | 2020-04-21 | 江西赣锋电池科技有限公司 | Lithium iron phosphate long-life battery electrolyte for energy storage |
| CN113471525A (en) * | 2021-06-23 | 2021-10-01 | 绍兴铋华科技有限公司 | Wide-temperature range type electrolyte for lithium iron phosphate battery |
| CN114695879A (en) * | 2022-03-14 | 2022-07-01 | 广西燚能新能源有限公司 | System formula and experimental method for lithium iron phosphate power battery pole piece difficult-to-seep liquid |
| CN114976239A (en) * | 2022-05-31 | 2022-08-30 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | High-safety lithium ion battery electrolyte suitable for full sea depth |
| CN115000521A (en) * | 2022-06-01 | 2022-09-02 | 哈尔滨工业大学 | Electrolyte for wide temperature window operation of lithium battery, preparation method of electrolyte and lithium iron phosphate lithium metal battery |
| WO2022219300A1 (en) * | 2021-04-15 | 2022-10-20 | Dyson Technology Limited | Electrolyte compositions |
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| CN107959054A (en) * | 2017-12-25 | 2018-04-24 | 湖北环天高科新能源有限公司 | A kind of power battery electrolyte |
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| CN114976239A (en) * | 2022-05-31 | 2022-08-30 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | High-safety lithium ion battery electrolyte suitable for full sea depth |
| CN115000521A (en) * | 2022-06-01 | 2022-09-02 | 哈尔滨工业大学 | Electrolyte for wide temperature window operation of lithium battery, preparation method of electrolyte and lithium iron phosphate lithium metal battery |
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Application publication date: 20170818 |