CN107317050A - A kind of pair of octafluoro amoxy lithium phosphate and non-aqueous electrolyte for lithium ion cell and lithium ion battery comprising it - Google Patents
A kind of pair of octafluoro amoxy lithium phosphate and non-aqueous electrolyte for lithium ion cell and lithium ion battery comprising it Download PDFInfo
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- CN107317050A CN107317050A CN201710405758.7A CN201710405758A CN107317050A CN 107317050 A CN107317050 A CN 107317050A CN 201710405758 A CN201710405758 A CN 201710405758A CN 107317050 A CN107317050 A CN 107317050A
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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
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The present invention provides a kind of double octafluoro amoxy lithium phosphates of electrolysis additive for improving lithium secondary battery high magnification charging performance and electrolyte and battery comprising the additive.Described double octafluoro amoxy phosphoric acid lithium salts, its structure is the phosphate lithium salts containing two 2,2,3,3,4,4,5,5 octafluoro amoxy groups.Include non-aqueous organic solvent and the 1M LiPF being dissolved in non-aqueous organic solvent in electrolyte containing the additive6Lithium salts.Contain the double octafluoro amoxy lithium phosphates for accounting for non-aqueous organic solvent gross mass 0.1% ~ 3% in non-aqueous organic solvent；Lithium secondary battery containing the additive has good cycle life under the conditions of high magnification quick charge.
Description
Technical field：
The present invention relates to a kind of lithium-ion battery electrolytes additive-bis--(2,2,3,3,4,4,5,5- octafluoros amoxy)
Lithium phosphate and its production method, and the lithium ion battery containing double-(2,2,3,3,4,4,5,5- octafluoro amoxy) lithium phosphate
Electrolyte and lithium ion battery.
Background technology：
Lithium ion battery has energy density height, service life length, operating temperature range is wide, security is good, environmentally friendly, put certainly
The electric low advantage of rate, is widely used to the fields such as mobile device, digital product, energy-accumulating power station, electrokinetic cell.With electronic vapour
The development of car and progressively promote, there is battery appearance during charge/discharge rates relatively slow, the high magnification quick charge of lithium ion battery
The problems such as amount and cycle life rapid decay.
Lithium ion battery charging process, is that lithium ion is embedded in graphite cathode in electrolyte, forms lithium carbide-LiC6Mistake
Journey, graphite cathode surface is hydrophobic interface, and surface can be low；And lithium-ion battery electrolytes are due to dissolving substantial amounts of hexafluorophosphoric acid
The electrolytic salts such as lithium, with very high surface energy, cause electrolyte on negative pole the problem of non-wetting.
So during quick charge, because electrolyte can not infiltrate well with negative terminal surface, a large amount of lithium ions exist
Limited contact point enters negative pole so that local lithium concentration is too high, causes lithium ion to be reduced into for lithium metal, and industry claims
For " dead lithium ", the generation of dead lithium can destroy negative pole structure, seriously reduce battery cycle life, or even make lithium metal formation needle-like
Crystal, punctures barrier film, triggers short circuit, occurs the cell safety accidents such as on fire, blast.
Under cryogenic, electrolysis fluid viscosity rise, infiltrates increasingly difficult, battery is had to design temperature protection circuit,
Forbid battery to charge below 0 DEG C, acutely decay to prevent battery cycle life or occur security incident.
Therefore, lithium ion battery is generally advocated and charged at a slow speed, is continued a journey 300 kilometers full of one, and battery capacity is 80 kilowatts
When electric automobile, it is necessary to four more than hour, hinder the popularization of electric automobile and use.
In view of this, it is necessary to which a kind of electrolyte, electrolyte suitable for high magnification quick charge lithium ion battery is provided
Additive and lithium ion battery, by being added with the surfactant of good electrochemical stability in the electrolytic solution, improve electrolysis
The wellability of liquid and negative terminal surface, prevents lithium from separating out, and improves use longevity of the battery at normal temperatures under fast charging and discharging cycling condition
Life.
The content of the invention：
The problem of existing for prior art, the present invention provides a kind of double-(2,2,3,3,4,4,5,5- octafluoro amoxy)
Phosphoric acid lithium salts and lithium-ion battery electrolytes and lithium ion battery comprising it, double-(oxygen of 2,2,3,3,4,4,5,5- octafluoro penta
Base) phosphoric acid lithium salts add electrolyte in, can significantly reduce lithium-ion battery electrolytes surface can, improve lithium ion battery battery
The wellability of liquid and negative material is solved, what lithium precipitation of the solution lithium ion battery during high magnification quick charge was caused can not
Inverse capacitance loss problem, and then solve the problem of capacity is decayed rapidly when lithium ion battery high power charging-discharging is circulated.
To achieve the above object, technical scheme is as follows：A kind of pair of octafluoro amoxy phosphoric acid lithium salts, its structure is
Phosphate lithium salts containing two 2,2,3,3,4,4,5,5- octafluoro amoxy groups.
Described non-aqueous electrolyte for lithium ion cell includes non-aqueous organic solvent and is dissolved in dense in non-aqueous organic solvent
Spend in the lithium hexafluoro phosphate for 1mol/L, non-aqueous organic solvent and to account for non-aqueous organic solvent gross mass 0.1%~3% containing quality
Double-(2,2,3,3,4,4,5,5- octafluoro amoxy) phosphoric acid lithium salts, double-(2,2,3,3,4,4,5, the 5- octafluoro amoxy)
Phosphoric acid lithium salts structure is as follows：
Double-(2,2,3,3,4,4,5,5- octafluoro amoxy) phosphoric acid lithium salts is added in lithium-ion battery electrolytes, due to
The lithium salts has the typical structure of surfactant, can effectively reduce lithium-ion battery electrolytes surface can, improve lithium from
The wellability of sub- battery electrolyte and negative terminal surface, prevents contact of the lithium-ion battery electrolytes with negative material in charging process
Local lithium ion accumulation causes lithium to separate out caused by bad, effectively solves battery capacity rapid decay in high magnification quick charge
Problem.
It is an advantage of the invention that：There is provided a kind of effective lifting lithium ion battery high magnification quick charge cycle life
Double-(2,2,3,3,4,4,5,5- octafluoro amoxy) phosphoric acid lithium carbonate, and there is provided suitable for high magnification based on this
Lithium-ion battery electrolytes, and the lithium ion battery with the good circulation life-span under the conditions of high magnification fast charging and discharging.
Brief description of the drawings：
Fig. 1 is double-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate of the present invention1H NMR spectras (1H NMR
(CDCl3, 200MHz)。
Embodiment：
The invention will be further elaborated with comparative example with reference to embodiments.
A kind of pair of octafluoro amoxy phosphoric acid lithium salts, its structure is to contain two 2,2,3,3,4,4,5,5- octafluoro amoxy bases
The phosphate lithium salts of group.
Described double-(2,2,3,3,4,4,5,5- octafluoros amoxy) phosphoric acid lithium salts of the present invention is closed by following route
Into：
The raw material used is：Phosphorus pentoxide, octafluoropentanol, lithium hydroxide or lithium carbonate, solvent are acetonitrile；Synthesis step
Suddenly：0.1mol phosphorus pentoxides (14.2g) are added into 200mL flasks, 75mL acetonitriles are added as solvent, it is slow at room temperature to drip
Plus 0.4mol octafluoropentanols (92.8g) are into flask, 2 hours completion of dropping continue to stir 0.5~3.0h after adding；
0.1mol lithium carbonates (7.39g) are then added, continue to react 3 hours, then vacuum distillation removes solvent, knot
Crystalline substance, filtering after drying, obtains product 46.36g, yield 87.5%.
Structural formula characterize data：1H NMR (CDCl3,200MHz), δ：6.46(m,1H),4.33(m,2H).
The specific preparation method of high multiplying power lithium ion battery electrolyte of the present invention is：
High multiplying power lithium ion battery electrolyte of the present invention includes non-aqueous organic solvent and is dissolved in non-aqueous organic molten
In electrolyte lithium salt in agent, non-aqueous organic solvent containing quality account for non-aqueous organic solvent gross mass 0.1%~3% it is double-
(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate；Electrolytic salt is LiPF6；The concentration of electrolytic salt is 1mol/L.
By ethylene carbonate, methyl ethyl carbonate, diethyl carbonate, additive vinylene carbonate and double-(2,2,3,3,
4,4,5,5- octafluoro amoxys) phosphoric acid lithium salts, electrolyte non-aqueous organic solvent is mixed to get according to the mass ratio of table 1, in the electricity
1mol/L lithium hexafluoro phosphate is dissolved in solution liquid non-aqueous organic solvent, that is, obtains nonaqueous electrolytic solution.
High multiplying power lithium ion battery preparation method of the present invention is：
Barrier film and electricity between heretofore described lithium ion battery, including anode pole piece, cathode pole piece, both positive and negative polarity pole piece
Solve liquid.
Anode pole piece, cathode pole piece are prepared respectively, and battery core is made in winding between barrier film is interval in into positive/negative plate, uses plastic-aluminum
Film wraps up battery core edge sealing, and foregoing high multiplying power lithium ion battery electrolyte is injected thereto, and high power is made in finally sealing
Rate lithium ion battery.
The preparation method of the anode pole piece is as follows：By ternary material LiNi0.5Co0.2Mn0.3O2, superP conductive agents,
PVDF bonding agents press 96%:2.0%:The 2.0% uniform lithium ion battery anode glue size for being mixed and made into certain viscosity, is coated on collection
On fluid aluminium foil, coating weight is 0.02g/cm2, it is cold-pressed after being dried at 90 DEG C；Then trimming, cut-parts, slitting are carried out；With
Afterwards under vacuum 90 DEG C dry 5 hours, soldering polar ear, be made meet require lithium ion cell positive.
The preparation method of the negative pole is：Graphite and conductive agent superP, thickener CMC, binding agent SBR are pressed into quality
Than 96:1.0:1.0:2.0 are made slurry, are coated on copper foil of affluxion body, and vacuum drying at 90 DEG C, coating weight is 0.01g/cm2；
Then carry out trimming, cut-parts, after slitting, dry 4 hours for 110 DEG C under vacuum, soldering polar ear, be made the lithium of requirement from
Sub- GND.
The barrier film uses Celgard2400.
By positive pole, negative pole, membrane winding, soft-package battery battery core is made in edge sealing；Added into battery core containing it is double-(2,2,3,
3,4,4,5,5- octafluoro amoxys) lithium phosphate electrolyte, pass through sealing, chemical conversion, exhaust, secondary sealing step, be made battery.
Embodiment 1
Synthesis pair-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate：0.1mol five is added into 200mL flasks
Two phosphorus (14.2g) are aoxidized, 75mL acetonitriles are added as solvent, 0.4mol octafluoropentanols (92.8g) are slowly added dropwise at room temperature to burning
Reaction solution temperature is raised in bottle, after adding to acetonitrile reflux temperature, is stirred 0.5 hour；
0.1mol lithium carbonates (7.39g) are subsequently added, continue to react 0.5 hour, subsequent vacuum distillation removes solvent, knot
Crystalline substance, filtering after drying, obtains product 85.0g, yield 79.8%.
Structural formula characterize data：1H NMR (CDCl3,200MHz), δ：6.46(m,1H),4.33(m,2H).
Embodiment 2
Synthesis pair-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate：0.1mol five is added into 200mL flasks
Two phosphorus (14.2g) are aoxidized, 75mL acetonitriles are added as solvent, 0.4mol octafluoropentanols (92.8g) are slowly added dropwise at room temperature to burning
Reaction solution temperature is raised in bottle, after adding to acetonitrile reflux temperature, is stirred 3 hours；
0.2mol lithium hydroxides (4.79g) are subsequently added, continue to react 0.5 hour, subsequent vacuum distillation removes solvent, knot
Crystalline substance, filtering after drying, obtains product 93.2g, yield 87.55%.
Embodiment 3
Synthesis pair-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate：0.1mol five is added into 200mL flasks
Two phosphorus (14.2g) are aoxidized, 75mL acetonitriles are added as solvent, 0.4mol octafluoropentanols (92.8g) are slowly added dropwise at room temperature to burning
Reaction solution temperature is raised in bottle, after adding to acetonitrile reflux temperature, is stirred 3.0 hours；
0.2mol lithium hydroxides (4.79g) are subsequently added, continue to react 3.0 hours, subsequent vacuum distillation removes solvent, knot
Crystalline substance, filtering after drying, obtains product 93.2g, yield 92.34%.
Embodiment 4
Synthesis pair-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate：0.1mol five is added into 200mL flasks
Two phosphorus (14.2g) are aoxidized, 75mL acetonitriles are added as solvent, 0.4mol octafluoropentanols (92.8g) are slowly added dropwise at room temperature to burning
Reaction solution temperature is raised in bottle, after adding to acetonitrile reflux temperature, is stirred 3.0 hours；
0.1mol lithium carbonates (7.39g) are subsequently added, continue to react 5.0 hours, subsequent vacuum distillation removes solvent, knot
Crystalline substance, filtering after drying, obtains product 101.6g, yield 95.44%.
Embodiment 5：
The preparation of lithium ion battery high magnification nonaqueous electrolytic solution：
Lithium ion battery high magnification nonaqueous electrolytic solution includes：Ethylene carbonate (EC), methyl ethyl carbonate (EMC), carbonic acid
Diethylester (DEC), additive vinylene carbonate (VC) and double-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate.
By ethylene carbonate (EC), methyl ethyl carbonate (EMC), diethyl carbonate (DEC), additive vinylene carbonate
(VC) and double-(2,2,3,3,4,4,5,5- octafluoro amoxy) lithium phosphate, it is mixed to get electrolyte according to the mass ratio of table 1 molten
Agent, dissolves in 1mol/L LiPF in the electrolyte solvent6, that is, obtain nonaqueous electrolytic solution.
The preparation of lithium ion battery：
Described lithium ion battery includes anode pole piece, cathode pole piece, the barrier film being interval between both positive and negative polarity pole piece and sheet
The described electrolyte of invention；
The preparation method of the anode pole piece is as follows：By ternary material LiNi0.5Co0.2Mn0.3O2, superP conductive agents,
PVDF bonding agents press 96%:2.0%:The 2.0% uniform lithium ion battery anode glue size for being mixed and made into certain viscosity, is coated on collection
On fluid aluminium foil, coating weight is 0.02g/cm2, it is cold-pressed after being dried at 90 DEG C；Then trimming, cut-parts, slitting are carried out；With
Afterwards under vacuum 90 DEG C dry 5 hours, soldering polar ear, be made meet require lithium ion cell positive.
The preparation method of the negative pole is：Graphite and conductive agent superP, thickener CMC, binding agent SBR are pressed into quality
Than 96:1.0:1.0:2.0 are made slurry, are coated on copper foil of affluxion body, and vacuum drying at 90 DEG C, coating weight is 0.01g/cm2；
Then carry out trimming, cut-parts, after slitting, dry 4 hours for 110 DEG C under vacuum, soldering polar ear, be made the lithium of requirement from
Sub- GND.
The barrier film uses Celgard2400.
The anode slice of lithium ion battery, cathode pole piece and barrier film that are prepared according to previous process are passed through into winding process, made
Thickness is made for 4.2mm, width is 34mm, length is 92mm lithium ion battery cell, uses aluminum plastic film edge sealing, true at 75 DEG C
Sky baking 10 hours, injects non-aqueous electrolyte for lithium ion cell of the present invention, sealing, standing after 24 hours, with 0.1C's
Then constant current charge is less than 0.05C to 4.35V with 4.35V constant-voltage charges to electric current, then is discharged to 3.0V with 0.1C, weight
It is multiple to circulate twice, chemical conversion is completed, secondary sealing after pumping, battery makes and finished.
Embodiment 6：
Lithium ion battery is prepared with reference to the method for embodiment 5, simply when preparing lithium-ion battery electrolytes, use quality
Percentage composition is that 0.5% double-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate replaces the quality hundred in embodiment 5
Divide double-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate that content is 0.1%.
Embodiment 7：
Lithium ion battery is prepared with reference to the method for embodiment 5, simply when preparing lithium-ion battery electrolytes, use quality
Percentage composition is that 1% double-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate replaces the quality percentage in embodiment 5
Double-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate that content is 0.1%.
Embodiment 8：
Lithium ion battery is prepared with reference to the method for embodiment 5, simply when preparing lithium-ion battery electrolytes, use quality
Percentage composition is that 2% double-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate replaces the quality percentage in embodiment 5
Double-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate that content is 0.1%.
Embodiment 9：
Lithium ion battery is prepared with reference to the method for embodiment 5, simply when preparing lithium-ion battery electrolytes, use quality
Percentage composition is that 3% double-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate replaces the quality percentage in embodiment 5
Double-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate that content is 0.1%.
Comparative example 1
Lithium ion battery is prepared with reference to the method for embodiment 5, simply when preparing lithium-ion battery electrolytes, additive is only
The vinylene carbonate for being 2% for weight/mass percentage composition, without double-(2,2,3,3,4,4,5,5- octafluoro amoxy) lithium phosphate.
For embodiment 5~9 and the lithium ion battery of comparative example 1, following high rate cyclic attribute testings are carried out.Reflection electricity
The result of the capability retention (%) of pond cycle performance is see table 1.
High-multiplying power discharge specific capacity is tested
For embodiment 5~9 and the lithium ion battery of comparative example 1, at ambient temperature first with 5C constant current to lithium
Ion battery charges to 4.35V, and electric current is further charged under 4.35V constant voltages less than 0.05C, then constant with 5C
Electric current is discharged to 3.0V to lithium ion battery.Current discharge capacity is first time cyclic discharge capacity.Battery is in a manner described
Cycle charge discharge electrical testing is carried out, the 100th discharge capacity is taken.The capability retention (%) of lithium ion battery=[the 100th circulation
Discharge capacity/first time cyclic discharge capacity] * 100%.
Table 1：The mass percent (%) of each component and the capability retention (%) at 100 weeks in non-aqueous organic solvent
The lithium ion battery and the lithium ion battery of comparative example 1 that table 1 show the embodiment of the present invention 5~9 are put in 5C chargings/5C
Cycle performance under the conditions of electricity, 3.0~4.35V.From embodiment 5~9 and comparative example 1 it can be seen that in lithium-ion battery electrolytes
With the addition of the lithium of double-(2,2,3,3,4,4,5,5- octafluoros amoxy) lithium phosphate additive containing molecular structural formula of the present invention from
Sub- battery can effectively improve the high-multiplying power discharge specific capacity of lithium ion battery.
Claims (8)
1. a kind of pair of octafluoro amoxy phosphoric acid lithium salts, it is characterised in that：Its structure is to contain two 2,2,3,3,4,4,5,5- eight
The phosphate lithium salts of fluorine amoxy group, its structural formula is：
。
2. according to claim 1 pair of octafluoro amoxy phosphoric acid lithium salts, it is characterised in that：Its synthetic method is：
By phosphorus pentoxide and octafluoropentanol, back flow reaction 0.5 ~ 3.0 hour in acetonitrile solution, obtained pair-（2,2,3,3,4,
4,5,5- octafluoro amoxys）The acetonitrile solution of phosphoric acid, then by lithium carbonate or lithium hydroxide be added to it is double-（2,2,3,3,4,4,
5,5- octafluoro amoxys）In the acetonitrile solution of phosphoric acid, flow back 0.5 ~ 5 hour, then, by vacuum distillation remove solvent-crystallization-
Filtering-drying and other steps, is made double octafluoro amoxy lithium phosphates.
3. according to claim 2 pair of octafluoro amoxy phosphoric acid lithium salts, it is characterized in that：In described synthetic method, five oxygen
It is 1 to change two phosphorus with octafluoropentanol mol ratio:4；The mol ratio of phosphorus pentoxide and lithium hydroxide is 1:2；Phosphorus pentoxide and carbon
The mol ratio of sour lithium is 1:1.
4. a kind of high multiplying power lithium ion battery electrolyte, it is characterised in that：It includes non-aqueous organic solvent and is dissolved in non-aqueous to have
Electrolyte lithium salt in machine solvent；In non-aqueous organic solvent double the eight of non-aqueous organic solvent gross mass 0.1% ~ 3% are accounted for containing quality
Fluorine amoxy lithium phosphate additive.
5. high multiplying power lithium ion battery electrolyte according to claim 4, it is characterised in that：Described non-aqueous organic solvent
Also include：Methyl ethyl carbonate, diethyl carbonate, ethylene carbonate, vinylene carbonate are with the mixed solvent of arbitrary proportion.
6. high multiplying power lithium ion battery electrolyte according to claim 4, it is characterised in that：Described electrolyte lithium salt is
LiPF6。
7. high multiplying power lithium ion battery electrolyte according to claim 4, it is characterised in that：Described electrolyte lithium salt
Concentration is 1mol/L.
8. a kind of high multiplying power lithium ion battery, it is characterised in that：It includes positive plate, negative plate, is interval in adjacent positive/negative plate
Between barrier film and electrolyte, described electrolyte is the high multiplying power lithium ion battery electrolyte described in claim 4.
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| CN201710405758.7A CN107317050B (en) | 2017-06-02 | 2017-06-02 | A kind of double octafluoro amoxy lithium phosphates and non-aqueous electrolyte for lithium ion cell and lithium ion battery comprising it |
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|---|---|---|---|---|
| GB689400A (en) * | 1949-07-27 | 1953-03-25 | Du Pont | Aqueous colloidal dispersions of polymers |
| CN102473964A (en) * | 2009-08-04 | 2012-05-23 | 东曹氟技术株式会社 | Asymmetric and/or low-symmetry fluorine-containing phosphate ester for use in a nonaqueous electrolyte solution |
| CN103931040A (en) * | 2011-11-10 | 2014-07-16 | 日本电气株式会社 | Lithium ion secondary battery |
-
2017
- 2017-06-02 CN CN201710405758.7A patent/CN107317050B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB689400A (en) * | 1949-07-27 | 1953-03-25 | Du Pont | Aqueous colloidal dispersions of polymers |
| CN102473964A (en) * | 2009-08-04 | 2012-05-23 | 东曹氟技术株式会社 | Asymmetric and/or low-symmetry fluorine-containing phosphate ester for use in a nonaqueous electrolyte solution |
| CN103931040A (en) * | 2011-11-10 | 2014-07-16 | 日本电气株式会社 | Lithium ion secondary battery |
Non-Patent Citations (1)
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| 邱露等: "八氟戊醇磷酸酯的合成及性能研究", 《成都大学学报（自然科学版）》 * |
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