CN101271989A - Lithium ion battery room temperature ionic liquid electrolyte and method for producing the same - Google Patents

Lithium ion battery room temperature ionic liquid electrolyte and method for producing the same Download PDF

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CN101271989A
CN101271989A CNA2008100669477A CN200810066947A CN101271989A CN 101271989 A CN101271989 A CN 101271989A CN A2008100669477 A CNA2008100669477 A CN A2008100669477A CN 200810066947 A CN200810066947 A CN 200810066947A CN 101271989 A CN101271989 A CN 101271989A
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ionic liquid
ion battery
room temperature
electrolyte
lithium
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郑洪河
毛玉华
邓永红
曲群婷
付延鲍
周海文
覃九三
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Shenzhen Capchem Technology Co Ltd
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    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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    • Y02E60/10—Energy storage using batteries

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Abstract

The invention relates to a preparation method for room temperature ionic liquid electrolyte of a lithium-ion battery, which consists of the following steps: (1) quaternary ammonium salt or piperidine ionic liquid with a weight ratio of 60 percent to 90 percent and propylene carbonate with a weight ratio of 10 percent to 40 percent are mixed to prepare a component solvent; (2) a small amount of addictive is added into the component solvent acquired in step (1) and mixed well; (3) the component solvent acquired in step (2) is dissolved in lithium salt electrolyte and mixed well and then placed in inert gases to package for storage. The room temperature ionic liquid electrolyte of the lithium-ion battery is characterized by good thermal stability and better compatibility with cathode material and anode material of the lithium-ion battery. The invention also relates to a lithium-ion battery manufactured by using the electrolyte system. The lithium-ion battery manufactured by the electrolyte has the advantages of good security and stable electrochemical cycle performance.

Description

Lithium ion battery room temperature ionic liquid electrolyte and preparation method thereof
Technical field
The present invention relates to a kind of lithium ion battery room temperature ionic liquid electrolyte and preparation method thereof, relate in particular to a kind of lithium ion battery room temperature ionic liquid-propene carbonate (Propylene carbonate:PC) composite electrolyte and preparation method thereof.
Background technology
Ionic liquid at room temperature is novel " soft " functional material or the medium that are in a liquid state under room temperature or nearly room temperature condition that is made of certain cationic and anion, the advantage of have that conductance height, steam force down that (or zero vapour pressure), liquid journey are wide, chemistry and electrochemical stability is good, pollution-free and easy recovery etc. being given prominence to is described as green solvent in recent years.Not only can widen the operating temperature range of battery as lithium ion battery electrolyte, and can improve the fail safe of battery under high power density, thoroughly eliminate the potential safety hazard of battery, thereby make the application of lithium ion battery in large-sized power systems such as electric automobile become possibility.
Yet the outstanding problem that the ionic liquid at room temperature electrolyte is used for lithium ion battery is bad with the compatibility of electrode material, and is just poor with the compatibility of battery positive and negative electrode material, and electrode material is difficult to show desirable doff lithium performance and cycle performance therein.Particularly the ion liquid electrochemical window of quaternary ammonium salt and piperidines is apparently higher than traditional liquid organic electrolyte, have very high thermal stability and chemical stability, but can not produce the solid electrolyte phase boundary facial mask (Solid Electrolyte Interface: be abbreviated as the SEI film) that the decomposition owing to electrolyte components forms in the carbon negative pole material initial charge process therein, the carbon negative terminal surface can not be by effective passivation, organic cation then embeds graphite layers prior to lithium ion, the large volume cation that embeds hinders the generation of lithium ion inlay reaction, and the carbon negative pole is difficult to carry out effective doff lithium circulation therein.For this reason, many researchers attempt by selecting effective film for additive, make it before the organic cation inlay, decomposition reaction take place, the passivation graphite electrode surface, stop the reaction of organic cations inlay, make graphite electrode can carry out effective doff lithium reaction, though this method is effective, but the defective and the deficiency that have several respects, mainly show as: the poor stability of (1) many organic liquid additives itself, flash point is low, as vinylene carbonate (VC), methyl ethyl carbonate alkene ester (EMC) etc., a large amount of these organic flammable solvents (about 20%) of interpolation have destroyed the thermal stability of electrolyte itself undoubtedly in the ion liquid system, can't fundamentally solve the safety issue of battery.(2) some additives are bad at the SEI membrane stability that the carbon negative terminal surface forms, and the SEI film is through constantly destroying and reforming in battery charge and discharge process, and it is thick and fine and close to become gradually, and film resistance raises, thereby causes the inducing capacity fading of battery.(3) some additives such as ethylene sulfite (ES) though, HF etc. can improve the character of carbon negative pole, and positive electrode is had destruction, is difficult to obtain actual commercial Application.
Summary of the invention
The object of the present invention is to provide a kind of ionic liquid at room temperature-propene carbonate composite electrolyte and preparation method thereof, purpose of the present invention reaches by following measure:
A kind of preparation method of lithium ion battery room temperature ionic liquid electrolyte, the preparation method of described lithium ion battery room temperature ionic liquid electrolyte comprises the steps:
(1) be that 60%～90% quaternary ammonium salt or piperidines ionic liquid are that 10%～40% propene carbonate mixes the mixed solvent that forms with weight ratio with weight ratio;
(2) in the described mixed solvent that step (1) obtains, mix after the interpolation minor amounts of additives;
(3) dissolve in lithium salts electrolyte and stirring again, put under the inert gas atmosphere encapsulation then and preserve.
The addition of described additive be account for described mixed solvent total weight 0.01%～5%.
Described additive is di-oxalate lithium borate (LiBOB), ethenylidene carbonic ester (VC) or ethylene carbonate (EC).
Described lithium salts electrolyte addition is 0.5mol/L～1.5mol/L.
Described lithium salts electrolyte is lithium hexafluoro phosphate (LiPF6), two (trifluoromethyl) sulfimide lithium (LiTFSI) or LiBF4 (LiBF6).
Another object of the present invention is to provide a kind of lithium ion battery that adopts the lithium ion battery room temperature ionic liquid electrolyte preparation.
With respect to prior art, can obtain boiling point more than 250 ℃ according to preparation method of the present invention, almost non-flammable lithium ion battery room temperature ionic liquid electrolyte, this electrolyte not only keeps and has developed the conventional liquid electrolyte and is used for capacity of lithium ion battery height, long advantage of life-span, can also eliminate the potential safety hazard of liquid lithium ionic cell to a great extent, realize the fail safe of lithium ion battery under extreme conditions such as high temperature, fast charging and discharging, acupuncture, distortion.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is the graphite-like carbon negative pole constant current charge-discharge curve in PC and quaternary ammonium salt ionic liquid at room temperature electrolyte respectively.
Fig. 2 is the first charge-discharge curve of native graphite in the ionic liquid-PC electrolyte of different proportionings.
Fig. 3 is the charging and discharging curve of native graphite in containing the ionic liquid of 0.01M LiBOB-PC electrolyte.
Fig. 4 is spinelle LiMn 2O 4Charging and discharging curve in ionic liquid-PC electrolyte.
Embodiment
The present invention is further elaborated below in conjunction with embodiment:
Embodiment 1
Quaternary ammonium salt ionic liquid at room temperature-PC combined electrolysis plastidome: get quaternary ammonium salt ionic liquid at room temperature (TMHA-TFSI) 50g that trifluoromethanesulp-onyl-onyl imide and trimethyl hexyl amine are formed, add PC 10g, after mixing, dissolve in 1g LiBOB as electrolytical additive, dissolve in 7g LiPF6 at last again as supporting electrolyte, after stirring, encapsulation is preserved under the argon gas atmosphere.
Embodiment 2
Quaternary ammonium salt ionic liquid at room temperature-PC combined electrolysis plastidome: get quaternary ammonium salt ionic liquid at room temperature (TMHA-TFSI) 50g that trifluoromethanesulp-onyl-onyl imide and trimethyl hexyl amine are formed, add PC 10g, after mixing, dissolve in 1g LiBOB as electrolytical additive, dissolve in 13g LiTFSI at last again as supporting electrolyte, after stirring, encapsulation is preserved under the argon gas atmosphere.
Embodiment 3
Quaternary ammonium salt ionic liquid at room temperature-PC combined electrolysis plastidome: get quaternary ammonium salt ionic liquid at room temperature (TMHA-TFSI) 50g that trifluoromethanesulp-onyl-onyl imide and trimethyl hexyl amine are formed, add PC 10g, after mixing, dissolve in 2ml ethylene carbonate (EC) as electrolytical additive, dissolve in 7g LiPF6 at last again as supporting electrolyte, after stirring, encapsulation is preserved under the argon gas atmosphere.
Embodiment 4
Quaternary ammonium salt ionic liquid at room temperature-PC combined electrolysis plastidome: get quaternary ammonium salt ionic liquid at room temperature (TMHA-TFSI) 50g that trifluoromethanesulp-onyl-onyl imide and trimethyl hexyl amine are formed, add PC 10g, after mixing, dissolve in 2ml ethylene carbonate (EC) as electrolytical additive, dissolve in 13g LiTFSI at last again as supporting electrolyte, after stirring, encapsulation is preserved under the argon gas atmosphere.
Embodiment 5
Quaternary ammonium salt ionic liquid at room temperature-PC combined electrolysis plastidome: get quaternary ammonium salt ionic liquid at room temperature (TMHA-TFSI) 50g that trifluoromethanesulp-onyl-onyl imide and trimethyl hexyl amine are formed, add PC 10g, after mixing, dissolve in 2ml ethenylidene carbonic ester (VC) as electrolytical additive, dissolve in 13g LiTFSI at last again as supporting electrolyte, after stirring, encapsulation is preserved under the argon gas atmosphere.
Embodiment 6
Piperidines ionic liquid at room temperature-PC combined electrolysis plastidome: get piperidines ionic liquid at room temperature such as N-methyl-N-propyl group piperidines-two (trifluoromethyl sulphonyl) inferior amine salt ionic liquid (PP 13-TFSI) 50g, add PC 15g, after mixing, dissolve in 0.5g LiBOB as electrolytical additive, dissolve in 13g at last again
LiTFSI is as supporting electrolyte, and after stirring, encapsulation is preserved under the argon gas atmosphere.
Embodiment 7
Piperidines ionic liquid at room temperature-PC combined electrolysis plastidome: get piperidines ionic liquid at room temperature such as N-methyl-N-propyl group piperidines-two (trifluoromethyl sulphonyl) inferior amine salt ionic liquid (PP13-TFSI) 50g, add PC 15g, after mixing, dissolve in 2ml ethylene carbonate (EC) as electrolytical additive, dissolve in 7g LiTFSI at last again as supporting electrolyte, after stirring, encapsulation is preserved under the argon gas atmosphere.
Embodiment 8
Piperidines ionic liquid at room temperature-PC combined electrolysis plastidome: get piperidines ionic liquid at room temperature such as N-methyl-N-propyl group piperidines-two (trifluoromethyl sulphonyl) inferior amine salt ionic liquid (PP13-TFSI) 50g, add PC 15g, after mixing, dissolve in 2ml ethenylidene carbonic ester (VC) as electrolytical additive, dissolve in 13g LiTFSI at last again as supporting electrolyte, after stirring, encapsulation is preserved under the argon gas atmosphere.
Embodiment 9
Piperidines ionic liquid at room temperature-PC combined electrolysis plastidome: get piperidines ionic liquid at room temperature such as N-methyl-N-propyl group piperidines-two (trifluoromethyl sulphonyl) inferior amine salt ionic liquid (PP13-TFSI) 50g, add PC 15g, after mixing, dissolve in 0.5g LiBOB as electrolytical additive, dissolve in 7gLiPF6 at last again as supporting electrolyte, after stirring, encapsulation is preserved under the argon gas atmosphere.
Embodiment 10
Piperidines ionic liquid at room temperature-PC combined electrolysis plastidome: get piperidines ionic liquid at room temperature such as N-methyl-N-propyl group piperidines-two (trifluoromethyl sulphonyl) inferior amine salt ionic liquid (PP13-TFSI) 50g, add PC 10g, after mixing, dissolve in 2ml ethylene carbonate (EC) as electrolytical additive, dissolve in 7g LiPF6 at last again as supporting electrolyte, after stirring, encapsulation is preserved under the argon gas atmosphere.
Quaternary ammonium salt or piperidines ionic liquid at room temperature are mixed with propene carbonate, on this basis, prepared lithium ion battery room temperature ionic liquid electrolyte, this electrolytical concrete forming process is: 0.5～1.5mol/L lithium salts (as lithium hexafluoro phosphate LiPF6, di-trifluoromethyl sulfimide lithium LiTFSI etc.) is dissolved in the mixed solvent of 60%～90% quaternary ammonium salt or piperidines ionic liquid and 10%～40% propene carbonate composition, add again a small amount of electrolyte additive (as di-oxalate lithium borate, account for the electrolyte total weight 0.01%～5%).When this ionic liquid at room temperature electrolyte has been avoided the lower boiling liquid additive of a large amount of uses tradition, destroy the electrolytical incombustibility of ionic liquid at room temperature, can not fundamentally eliminate the problem of cell safety hidden danger.Because boiling point and the flash point of PC itself are all very high, a little P C (volume ratio is 10%～40%) adds the stability that can not destroy electrolyte itself in the ionic liquid electrolyte.After tested, the boiling point of this combined electrolysis plastidome can reach more than 250 ℃, exceeds about 150 ℃ than traditional ethylene carbonate (EC)+diethyl carbonate (DEC) electrolyte system, thereby has improved the security performance of battery greatly.Propene carbonate (PC) itself and many anode material for lithium-ion batteries such as LiCoO in addition 2, LiMn 2O 4, LiFePO 4Deng compatibility good, this ionic liquid at room temperature electrolyte not only can improve the compatibility of electrolyte and carbon negative pole material, also can improve simultaneously the compatibility of itself and positive electrode commonly used, this raising to the overall chemical performance of battery is useful.In addition, the toxicity of ionic liquid electrolyte itself is little, easily reclaims, and can recycle, and therefore, this combined electrolysis plastidome is novel, safety and green system.
Below the preparation technology that the lithium ion battery room temperature ionic liquid electrolyte of the inventive method preparation is produced lithium ion battery is adopted in explanation.
(1) LiMn 2O 4The manufacturing of pole piece
Get 5g PVDF binding agent and 4g acetylene black conductive agent is sneaked among the 91g NMP, after mixing with 4000 rev/mins speed, with 100g LiMn 2O 4The cathode material mixed pulp, stirred 2 hours with 4000 rev/mins speed again, guarantee that slurry fully mixes, the thickness of aluminum foil current collector is 28 μ m, wide 320mm, on the coating machine slurry is being applied on the aluminum foil current collector, the dry thickness of electrode coating is 70 μ m, and is standby after 2 atmospheric pressures (atm) compacting.
(2) manufacturing of native graphite pole piece
Get 5g PVDF binding agent and 2g acetylene black conductive agent is sneaked among the 93g NMP, after mixing with 4000 rev/mins speed, with 100g native graphite anode material mixed pulp, stirred 2 hours with 4000 rev/mins speed, guarantee that slurry fully mixes, the thickness of Copper Foil collector is 18 μ m, wide 320mm, on the coating machine slurry is being applied on the Copper Foil collector, the dry thickness of electrode coating is about 50 μ m, and is standby after 2 atmospheric pressures (atm) compacting.
(3) manufacturing of button cell
Use above-mentioned LiMn respectively 2O 4Pole piece and the native graphite pole piece electrode that makes a search, metal lithium sheet is done electrode, Celgard 2400 barrier films, the lithium ion battery room temperature ionic liquid electrolyte of embodiment (2) preparation is assembled button cell as the electrolyte of battery in glove box.According to the conventional process that button cell is made, after cutting, baking sheet, assembling, fluid injection and compacting were sealed, the battery of gained changed into.
(4) battery changing into and testing
The system of changing into of battery is: use 0.1mA/cm 2Current density constant current charge and discharge cycle 3 times, LiMn 2O 4The charging of pole piece is 4.3V by voltage, and discharge is 3.0V by voltage, and the charging of native graphite pole piece is 0V by voltage, and discharge is 2.0V by voltage, finish change into after, use 0.2mA/cm 2Current density battery is carried out cycle performance test.
In recent years, at lithium ion battery industry propene carbonate (PC) destructiveness of high-graphitized material with carbon element being almost people generally acknowledges, the graphite-like material with carbon element almost can't carry out reversible doff lithium circulation therein, therefore, its filming performance never attracts much attention, unique advantage of this solvent that people approved is exactly that cryogenic property is good, therefore, propene carbonate (PC) has become the important component of low-temperature electrolytes in recent years, but its consumption is limited in 20%, and the high temperature properties of its higher boiling point, high flash point is ignored by people always.The green solvent system of electrochemistry inertia such as quaternary ammonium salt or piperidines ionic liquid at room temperature are because electrochemical window is wide, good stability, can reduction decomposition in the initial charge process and produce the SEI film, the carbon negative terminal surface can not be by effective passivation, organic cation embeds graphite layers prior to lithium ion, and the carbon negative pole is difficult to carry out effective doff lithium circulation therein.As can be seen from Figure 1, the graphite-like carbon negative pole material can't arrive embedding lithium current potential (about 0.1V) at all in propene carbonate (PC) base electrolyte, and in quaternary ammonium salt or piperidines ionic liquid, have only organic cations embedding delamination reaction, can't carry out the embedding delamination reaction of lithium ion.
After propene carbonate (PC) and the room-temperature ion liquid bluk recombination, situation is then completely different, the graphite-like carbon negative pole material can carry out the doff lithium circulation therein, charge/discharge capacity relevant with efficient (as Fig. 2) with the proportioning of two kinds of solvents, in Fig. 2, curve 1 expression propene carbonate (PC) is the first charge-discharge curve of 1: 1 o'clock native graphite in composite electrolyte with ion liquid volume ratio; Curve 2 expression propene carbonates (PC) are the first charge-discharge curves of 2: 3 o'clock native graphites in composite electrolyte with ion liquid volume ratio; Curve 3 expression propene carbonates (PC) are the first charge-discharge curves of 3: 7 o'clock native graphites in composite electrolyte with ion liquid volume ratio; Curve 4 expression propene carbonates (PC) are the first charge-discharge curve of 1: 3 o'clock native graphite in composite electrolyte with ion liquid volume ratio; Curve 5 expression propene carbonates (PC) are the first charge-discharge curve of 1: 9 o'clock native graphite in composite electrolyte with ion liquid volume ratio.When propene carbonate (PC) and ion liquid volume ratio were 1: 3, native graphite reversible capacity therein can reach 320mAh/g, but coulombic efficiency is not high enough first, reaches 79.7%, does not have compound tense to compare with the two, and this raising is very significant.But, still have distance apart from commercial Application.
In order to continue to improve the electrochemical properties of this electrolyte system, make it to reach the standard of commercial Application, and guarantee electrolytical thermal stability, the LiBOB of 0.01mol/L has been added in continuation in this composite electrolyte (volume ratio is 1: 3 a composite electrolyte), (also can use a small amount of other organic liquid film for additive such as 5%VC etc.), at this moment, the reversible discharge capacity of native graphite can reach 360mAh/g, coulombic efficiency can reach the requirement that industry is used near 90% (as Fig. 3) first.If use spherical graphite to replace common crystalline flake graphite, effect is more obvious, and particularly coulombic efficiency can reach more than 92% first.
This novel electrolytes system not only has good compatibility to carbon negative pole material, and positive electrode commonly used also can carry out the doff lithium circulation therein, and shows good electrochemical properties, as spinelle LiMn 2O 4Reversible capacity therein is suitable with its capacity in traditional liquid organic electrolyte, and has good cycle performance (as Fig. 4).
Above result as seen, combined electrolysis plastidome of the present invention has the compatibility to lithium ion battery positive and negative electrode material, and has novel, safe, green character, is expected to be applied in the lithium ion battery of new generation of long-life and high security.The traditional view of the propene carbonate that people generally believe (PC) not as ethylene carbonate (EC) and ethylene sulfite (ES) overthrown in this discovery, showed the advantage of propene carbonate (PC) in ionic liquid electrolyte, further discover, this electrolyte system not only has good compatibility to the spherical graphite that generally adopts in the industry, and can use common natural flake graphite, further reduce the cost of negative material.In this sense, this electrolyte system has not only been realized the fail safe of battery itself, and makes that common natural scale is not modified and also may be used for lithium ion battery.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.

Claims (8)

1. the preparation method of a lithium ion battery room temperature ionic liquid electrolyte, it is characterized in that: the preparation method of described lithium ion battery room temperature ionic liquid electrolyte comprises the steps:
(1) be that 60%～90% quaternary ammonium salt or piperidines ionic liquid are that 10%～40% propene carbonate mixes the mixed solvent that forms with weight ratio with weight ratio;
(2) in the described mixed solvent that step (1) obtains, mix after the interpolation minor amounts of additives;
(3) dissolve in lithium salts electrolyte and stirring again, put under the inert gas atmosphere encapsulation then and preserve.
2. the preparation method of lithium ion battery room temperature ionic liquid electrolyte as claimed in claim 1 is characterized in that: the addition of described additive be account for described mixed solvent total weight 0.01%～5%.
3. the preparation method of lithium ion battery room temperature ionic liquid electrolyte as claimed in claim 2, it is characterized in that: described additive is di-oxalate lithium borate (LiBOB), ethenylidene carbonic ester (VC) or ethylene carbonate (EC).
4. the preparation method of lithium ion battery room temperature ionic liquid electrolyte as claimed in claim 1, it is characterized in that: described lithium salts electrolyte addition is 0.5mol/L～1.5mol/L.
5. the preparation method of lithium ion battery room temperature ionic liquid electrolyte as claimed in claim 4, it is characterized in that: described lithium salts electrolyte is lithium hexafluoro phosphate (LiPF 6), two (trifluoromethyl) sulfimide lithium (LiTFSI) or LiBF4 (LiBF 6).
6. the preparation method of lithium ion battery room temperature ionic liquid electrolyte as claimed in claim 1, it is characterized in that: described inert gas is an argon gas.
7. lithium ion battery room temperature ionic liquid electrolyte that requires 1 to 6 the described method preparation of any one claim according to aforesaid right.
8. lithium ion battery with the described lithium ion battery room temperature ionic liquid electrolyte of claim 7.
CNA2008100669477A 2008-04-30 2008-04-30 Lithium ion battery room temperature ionic liquid electrolyte and method for producing the same Pending CN101271989A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101847751A (en) * 2010-05-20 2010-09-29 中南大学 Negative pole system of lithium ion battery with high reversible capacity and first charge-discharge efficiency
CN102903954A (en) * 2011-07-25 2013-01-30 微宏新材料(湖州)有限公司 Lithium ion secondary battery containing ion liquid electrolyte
CN102956363A (en) * 2011-08-17 2013-03-06 海洋王照明科技股份有限公司 Electrolyte and double-electric-layer capacitor
CN103688326A (en) * 2011-08-30 2014-03-26 海洋王照明科技股份有限公司 Double-center quaternary ammonium salt ion liquid, preparation method therefor and use thereof
CN103833558A (en) * 2012-11-26 2014-06-04 海洋王照明科技股份有限公司 Quaternary ammonium salt ionic liquid, and preparation method and application thereof
CN104701032A (en) * 2015-01-07 2015-06-10 南昌大学 Preparation method of boron ionic liquid containing super capacitor
CN107799826A (en) * 2017-11-01 2018-03-13 上海应用技术大学 Improve electrolyte of graphite electrode surface solid electrolyte film properties and preparation method thereof
CN107910587A (en) * 2017-12-08 2018-04-13 广州天赐高新材料股份有限公司 Lithium secondary cell electrolyte and lithium secondary battery
CN109980286A (en) * 2019-04-28 2019-07-05 上海应用技术大学 A kind of effective lithium-ion battery electrolytes for inhibiting organic solvent reduction decomposition

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101847751A (en) * 2010-05-20 2010-09-29 中南大学 Negative pole system of lithium ion battery with high reversible capacity and first charge-discharge efficiency
CN102903954A (en) * 2011-07-25 2013-01-30 微宏新材料(湖州)有限公司 Lithium ion secondary battery containing ion liquid electrolyte
CN102956363A (en) * 2011-08-17 2013-03-06 海洋王照明科技股份有限公司 Electrolyte and double-electric-layer capacitor
CN103688326A (en) * 2011-08-30 2014-03-26 海洋王照明科技股份有限公司 Double-center quaternary ammonium salt ion liquid, preparation method therefor and use thereof
CN103833558A (en) * 2012-11-26 2014-06-04 海洋王照明科技股份有限公司 Quaternary ammonium salt ionic liquid, and preparation method and application thereof
CN104701032A (en) * 2015-01-07 2015-06-10 南昌大学 Preparation method of boron ionic liquid containing super capacitor
CN104701032B (en) * 2015-01-07 2018-08-17 南昌大学 A kind of preparation method of boracic ionic liquid super capacitor
CN107799826A (en) * 2017-11-01 2018-03-13 上海应用技术大学 Improve electrolyte of graphite electrode surface solid electrolyte film properties and preparation method thereof
CN107910587A (en) * 2017-12-08 2018-04-13 广州天赐高新材料股份有限公司 Lithium secondary cell electrolyte and lithium secondary battery
CN107910587B (en) * 2017-12-08 2020-08-04 广州天赐高新材料股份有限公司 Lithium secondary battery electrolyte and lithium secondary battery
CN109980286A (en) * 2019-04-28 2019-07-05 上海应用技术大学 A kind of effective lithium-ion battery electrolytes for inhibiting organic solvent reduction decomposition

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Inventor after: Zheng Honghe

Inventor after: Mao Yuhua

Inventor after: Deng Yonghong

Inventor after: Qu Qunting

Inventor after: Fu Yanbao

Inventor after: Zhou Dawen

Inventor after: Qin Jiusan

Inventor before: Zheng Honghe

Inventor before: Mao Yuhua

Inventor before: Deng Yonghong

Inventor before: Qu Qunting

Inventor before: Fu Yanbao

Inventor before: Zhou Haiwen

Inventor before: Qin Jiusan

COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: ZHENG HONGHE MAO YUHUA DENG YONGHONG QU QUNTING FU YANBAO ZHOU HAIWEN TAN JIUSAN TO: ZHENG HONGHE MAO YUHUA DENG YONGHONG QU QUNTING FU YANBAO ZHOU DAWEN TAN JIUSAN

C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Open date: 20080924