CN104201416A - Functional electrolyte of high-voltage lithium ion battery, as well as preparation method and application - Google Patents

Functional electrolyte of high-voltage lithium ion battery, as well as preparation method and application Download PDF

Info

Publication number
CN104201416A
CN104201416A CN201410419347.XA CN201410419347A CN104201416A CN 104201416 A CN104201416 A CN 104201416A CN 201410419347 A CN201410419347 A CN 201410419347A CN 104201416 A CN104201416 A CN 104201416A
Authority
CN
China
Prior art keywords
lithium
ion battery
battery electrolytes
lithium ion
solvent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410419347.XA
Other languages
Chinese (zh)
Other versions
CN104201416B (en
Inventor
李伟善
戎海波
许梦清
邢丽丹
廖友好
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Guanyu Battery Co Ltd
Original Assignee
South China Normal University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by South China Normal University filed Critical South China Normal University
Priority to CN201410419347.XA priority Critical patent/CN104201416B/en
Publication of CN104201416A publication Critical patent/CN104201416A/en
Application granted granted Critical
Publication of CN104201416B publication Critical patent/CN104201416B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • 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
    • 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 belongs to the field of lithium ion batteries, and discloses a functional electrolyte of a high-voltage lithium ion battery, as well as a preparation method and an application. The functional electrolyte of the high-voltage lithium ion battery is obtained by adding a functional additive glutaric anhydride into a traditional lithium ion battery electrolyte, wherein the common electrolyte comprises cyclic carbonate solvent, linear carbonate solvent and conductive lithium salt. The functional additive used in the method forms a layer of thinner and more stable film with a protection function on the surface of an anode in a 3-5.0V charge and discharge system, the oxygenolysis of the electrolyte under high voltage is inhibited on one hand, and the anode material is protected on the other hand, so that the cycle performance and safety performance of the high-voltage lithium ion battery are improved.

Description

A kind of high-voltage lithium ion batteries function electrolyte and preparation method and application
Technical field
The invention belongs to lithium ion battery field, be specifically related to a kind of high-voltage lithium ion batteries function electrolyte and preparation method and application.
Background technology
Lithium ion battery has advantages of that energy density is large, operating voltage is high and have extended cycle life etc.Current business has LiMn2O4, cobalt acid lithium, LiFePO4, ternary material with the positive electrode of lithium ion battery, and these are several, charge cutoff voltage is generally all no more than 4.2V, along with scientific and technological progress and the development in market, the energy density that promotes lithium battery seems important and urgent day by day.Except the improvement of current material and battery production technology, high voltage (>4.5V) positive electrode is one of more popular research direction, is mainly by promoting the depth of charge of positive electrode active materials, to realize the high-energy-density of battery.
Yet, when improving positive electrode voltage, the performances such as the charge and discharge cycles of battery are but declining, reason positive electrode is stable not on the one hand, be the matching problem of electrolyte on the other hand, there is oxidation Decomposition in the lower meeting of high voltage (>4.5V) on anodal surface in common electrolyte, the oxidative decomposition of electrolyte also can be impelled the destruction of positive electrode simultaneously.So developing high voltage withstanding electrolyte has important actual application value.
Summary of the invention
In order to overcome the shortcoming and deficiency of prior art, primary and foremost purpose of the present invention is to provide a kind of high-voltage lithium ion batteries function electrolyte;
Another object of the present invention is to provide the preparation method of above-mentioned high-voltage lithium ion batteries function electrolyte;
A further object of the present invention is to provide the application of above-mentioned high-voltage lithium ion batteries function electrolyte.
Object of the present invention is achieved through the following technical solutions:
A high-voltage lithium ion batteries function electrolyte, comprises conventional lithium-ion battery electrolytes, and described conventional lithium-ion battery electrolytes consists of cyclic carbonate ester solvent, linear carbonates solvent and electric conducting lithium salt; Also comprise functional additive, described functional additive is glutaric anhydride.
Described conventional lithium-ion battery electrolytes can prepare according to conventional component and the method for state of the art.
Preferably, the addition of described functional additive is equivalent to described conventional lithium-ion battery electrolytes quality 1%～5%;
Preferably, in described conventional lithium-ion battery electrolytes, the mass ratio of cyclic carbonate ester solvent and linear carbonates solvent is (1:3)～(3:2); The final concentration of electric conducting lithium salt in described conventional lithium-ion battery electrolytes is 0.8～1.2mol/L;
Preferably, described cyclic carbonate ester solvent is ethylene carbonate (EC);
Preferably, described linear carbonates solvent is at least one in dimethyl carbonate (DMC), methyl ethyl carbonate (EMC), diethyl carbonate (DEC) or methyl propyl carbonate (MPC);
Preferably, described electric conducting lithium salt is LiPF 6, LiBOB, LiSO 3cF 3, LiClO 4, LiAsF 6, Li (CF 3sO 2) 2n or LiC (CF 3sO 2) 3in at least one.
The preparation method of above-mentioned high-voltage lithium ion batteries function electrolyte, comprises the steps:
(1) by cyclic carbonate ester solvent and linear carbonates solvent, clarification, dewater, obtain mixed solvent; At ambient temperature, electric conducting lithium salt is added in described mixed solvent, stir, obtain conventional lithium-ion battery electrolytes;
(2) in the conventional lithium-ion battery electrolytes obtaining in step (1), add functional additive, obtain high-voltage lithium ion batteries function electrolyte; Described functional additive is glutaric anhydride.
Preferably, the mass ratio of the cyclic carbonate ester solvent described in step (1) and described linear carbonates solvent is (1:3)～(3:2);
Preferably, the cyclic carbonate ester solvent described in step (1) is ethylene carbonate (EC);
Preferably, the linear carbonates solvent described in step (1) is at least one in dimethyl carbonate (DMC), methyl ethyl carbonate (EMC), diethyl carbonate (DEC) or methyl propyl carbonate (MPC);
Preferably, the final concentration of the electric conducting lithium salt described in step (1) in conventional lithium-ion battery electrolytes is 0.8～1.2mol/L;
Preferably, the electric conducting lithium salt described in step (1) is LiPF 6, LiBOB, LiSO 3cF 3, LiClO 4, LiAsF 6, Li (CF 3sO 2) 2n or LiC (CF 3sO 2) 3in at least one;
Preferably, the clarification described in step (1), dewater and process by any one or at least two kinds in molecular sieve, activated carbon, calcium hydride, lithium hydride, anhydrous calcium oxide, calcium chloride, phosphorus pentoxide, alkali metal or alkaline-earth metal;
Preferably, the molecular sieve described in step (1) adopts or type;
Preferably, described in step (1), the scope of room temperature is 25～40 ℃;
Preferably, shown in step (2), the addition of functional additive is equivalent to 1%～5% of conventional lithium-ion battery electrolytes quality.
Described high-voltage lithium ion batteries function electrolyte is applied to manufacture lithium ion battery.The lithium ion battery of gained has good charge-discharge performance.
The present invention has following advantage and effect with respect to prior art:
Functional additive the discharging and recharging in system at 3～5.0V that the present invention uses; contrast conventional lithium-ion battery electrolytes; can form the thinner more stable film with protective value of one deck on anodal surface; by this tunic; effectively suppressed under high voltage electrolyte solvent component oxidation Decomposition further; and the stripping phenomenon that has reduced to a certain extent positive electrode, to a certain degree positive electrode has been protected in Shangdi, thereby has improved cycle performance and the security performance of high-voltage lithium ion batteries.
Accompanying drawing explanation
The linear scan comparison diagram of the V-type electrolysis tank that Fig. 1 electrolyte that to be the embodiment of the present invention 1 prepare with comparative example is made.
Lithium ion battery circulation 300 circles that Fig. 2 electrolyte that to be the embodiment of the present invention 1 prepare with comparative example is made discharge and recharge comparison diagram.
AC impedance comparison diagram after lithium ion battery circulation 200 circles that Fig. 3 electrolyte that to be the embodiment of the present invention 1 prepare with comparative example is made.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
A high-voltage lithium ion batteries function electrolyte, its preparation method is as follows:
(1) by cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) EC:DMC=1:1 mixing in mass ratio, and adopt molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 25 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF 6be dissolved in described mixed solvent, stir, obtain conventional lithium-ion battery electrolytes; Wherein, electric conducting lithium salt LiPF 6final concentration in conventional lithium-ion battery electrolytes is 1.0mol/L;
(2) in the conventional lithium-ion battery electrolytes of preparing in step (1), add glutaric anhydride, the consumption of glutaric anhydride is 2% of conventional lithium-ion battery electrolytes quality, obtains described high-voltage lithium ion batteries function electrolyte.
Embodiment 2
A high-voltage lithium ion batteries function electrolyte, its preparation method is as follows:
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) are mixed according to mass ratio EC:DMC=1:2, and adopt molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 28 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF 6be dissolved in described mixed solvent, stir, obtain conventional lithium-ion battery electrolytes; Wherein, electric conducting lithium salt LiPF 6final concentration in conventional lithium-ion battery electrolytes is 0.8mol/L;
(2) in the conventional lithium-ion battery electrolytes of preparing in step (1), add glutaric anhydride, the consumption of glutaric anhydride is 1% of conventional lithium-ion battery electrolytes quality, obtains described high-voltage lithium ion batteries function electrolyte.
Embodiment 3
A high-voltage lithium ion batteries function electrolyte, its preparation method is as follows:
(1) by cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) EC:DMC=1:3 mixing in mass ratio, and adopt molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 28 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF 6be dissolved in described mixed solvent, stir, obtain conventional lithium-ion battery electrolytes; Wherein, electric conducting lithium salt LiPF 6final concentration in conventional lithium-ion battery electrolytes is 1.0mol/L;
(2) in the conventional lithium-ion battery electrolytes of preparing in step (1), add glutaric anhydride, the consumption of glutaric anhydride is 1% of conventional lithium-ion battery electrolytes quality, obtains described high-voltage lithium ion batteries function electrolyte.
Embodiment 4
A high-voltage lithium ion batteries function electrolyte, its preparation method is as follows:
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent methyl ethyl carbonate (EMC) are mixed according to mass ratio EC:EMC=1:2, and adopt molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 30 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF 6be dissolved in described mixed solvent, stir, obtain conventional lithium-ion battery electrolytes; Wherein, electric conducting lithium salt LiPF 6final concentration in conventional lithium-ion battery electrolytes is 1.0mol/L;
(2) in the conventional lithium-ion battery electrolytes of preparing in step (1), add glutaric anhydride, the consumption of glutaric anhydride is 1% of conventional lithium-ion battery electrolytes quality, obtains described high-voltage lithium ion batteries function electrolyte.
Embodiment 5
A high-voltage lithium ion batteries function electrolyte, its preparation method is as follows:
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent methyl ethyl carbonate (EMC) are mixed according to mass ratio EC:EMC=1:1, and adopt molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 25 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF 6be dissolved in described mixed solvent, stir, obtain conventional lithium-ion battery electrolytes; Wherein, electric conducting lithium salt LiPF 6final concentration in conventional lithium-ion battery electrolytes is 0.8mol/L;
(2) in the conventional lithium-ion battery electrolytes of preparing in step (1), add glutaric anhydride, the consumption of glutaric anhydride is 2% of conventional lithium-ion battery electrolytes quality, obtains described high-voltage lithium ion batteries function electrolyte.
Embodiment 6
A high-voltage lithium ion batteries function electrolyte, its preparation method is as follows:
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) are mixed according to mass ratio EC:DMC=3:2, and adopt molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 35 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF 6be dissolved in described mixed solvent, stir, obtain conventional lithium-ion battery electrolytes; Wherein, electric conducting lithium salt LiPF 6final concentration in conventional lithium-ion battery electrolytes is 1.0mol/L;
(2) in the conventional lithium-ion battery electrolytes of preparing in step (1), add glutaric anhydride, the consumption of glutaric anhydride is 1% of conventional lithium-ion battery electrolytes quality, obtains described high-voltage lithium ion batteries function electrolyte.
Embodiment 7
A high-voltage lithium ion batteries function electrolyte, its preparation method is as follows:
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent methyl ethyl carbonate (EMC) are mixed according to mass ratio EC:EMC=3:2, and adopt molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 40 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF 6be dissolved in described mixed solvent, stir, obtain conventional lithium-ion battery electrolytes; Wherein, electric conducting lithium salt LiPF 6final concentration in conventional lithium-ion battery electrolytes is 0.8mol/L;
(2) in the conventional lithium-ion battery electrolytes of preparing in step (1), add glutaric anhydride, the consumption of glutaric anhydride is 2% of conventional lithium-ion battery electrolytes quality, obtains described high-voltage lithium ion batteries function electrolyte.
Embodiment 8
A high-voltage lithium ion batteries function electrolyte, its preparation method is as follows:
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) are mixed according to mass ratio EC:DMC=1:2, and adopt molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 25 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF 6be dissolved in described mixed solvent, stir, obtain conventional lithium-ion battery electrolytes; Wherein, electric conducting lithium salt LiPF 6final concentration in conventional lithium-ion battery electrolytes is 1.2mol/L;
(2) in the conventional lithium-ion battery electrolytes of preparing in step (1), add glutaric anhydride, the consumption of glutaric anhydride is 5% of conventional lithium-ion battery electrolytes quality, obtains described high-voltage lithium ion batteries function electrolyte.
Comparative example
A lithium-ion battery electrolytes, its preparation method is as follows:
By cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) EC:DMC=1:1 mixing in mass ratio, and adopt molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 25 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF 6be dissolved in described mixed solvent electric conducting lithium salt LiPF 6final concentration be 1.0mol/L, stir, obtain described lithium-ion battery electrolytes.
Effect comparison:
Lithium-ion battery electrolytes prepared by high-voltage lithium ion batteries function electrolyte prepared by embodiment 1 and comparative example compares:
(1) the linear scan comparison diagram of the V-type electrolysis tank that Fig. 1 electrolyte that to be embodiment 1 prepare with comparative example is made.Method of testing is: with the platinum disk electrode electrode of working, lithium sheet is done electrode, add the high-voltage lithium ion batteries function electrolyte of embodiment 1 preparation or each 2ml of lithium-ion battery electrolytes prepared by comparative example, then at Solartron-1470 (Britain) multi-channel analyzer, carry out linear scan electro-chemical test.Sweep speed with 1mV/s is swept to 6V from Open Circuit Potential.Fig. 1 shows that the high-voltage lithium ion batteries function electrolyte of embodiment 1 preparation has occurred oxidation current in 4.1V left and right; and comparative example's lithium-ion battery electrolytes does not have corresponding oxidation current in 4.1V left and right; and greatly after 4.8V; the oxidation current of the high-voltage lithium ion batteries function electrolyte of embodiment 1 preparation under high potential is significantly less than comparative example; illustrate that glutaric anhydride can be preferentially at anodal surface oxidation; form layer protecting film, thereby suppress the further oxidation Decomposition of carbonate solvent.
(2) Fig. 2 is the comparison diagram that discharges and recharges of lithium ion battery circulation 300 circles made respectively of the high-voltage lithium ion batteries function electrolyte of the embodiment of the present invention 1 and lithium-ion battery electrolytes prepared by comparative example.Method of testing is: with the nickel LiMn2O4 electrode of working, lithium sheet is done electrode, add each 30 μ L of lithium-ion battery electrolytes that high-voltage lithium ion batteries function electrolyte that embodiment 1 prepares or comparative example prepare, in blue electrical testing system (China), carry out charge-discharge test after being then assembled into battery.At 25 ℃ of room temperatures, with 0.5C charge and discharge multiplying power after charge and discharge cycles between 3～5.0V scope 300 circle, measure charge-discharge performance.As shown in Figure 2, after circulation 300 circles, embodiment 1 compares comparative example better cyclical stability.
(3) Fig. 3 is the AC impedance comparison diagram after lithium ion battery circulation 300 circles made respectively of the high-voltage lithium ion batteries function electrolyte of the embodiment of the present invention 1 and lithium-ion battery electrolytes prepared by comparative example.Method of testing is: with the nickel LiMn2O4 electrode of working, lithium sheet is done electrode, add each 30 μ L of lithium-ion battery electrolytes that high-voltage lithium ion batteries function electrolyte that embodiment 1 prepares or comparative example prepare, at Autolab (Holland) electrochemical workstation, carry out ac impedance measurement after being then assembled into battery.At 25 ℃ of room temperatures, with 0.5C charge and discharge multiplying power after charge and discharge cycles between 3～5.0V scope 300 circle, measure the variation of electrode surface impedance.As shown in Figure 3, the impedance of the cathode film that the lithium-ion battery electrolytes that the impedance ratio comparative example of the cathode film that the high-voltage lithium ion batteries function electrolyte that embodiment 1 prepares forms obtains forms is little, further illustrate glutaric anhydride and can form densification, stable cathode film on anodal surface.
Through same contrast, detect, the performance of the high-voltage lithium ion batteries function electrolyte of embodiment 2～8 gained is all better than comparative example's lithium-ion battery electrolytes.
Above-described embodiment is preferably execution mode of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.

Claims (10)

1. a high-voltage lithium ion batteries function electrolyte, comprises conventional lithium-ion battery electrolytes, and described conventional lithium-ion battery electrolytes consists of cyclic carbonate ester solvent, linear carbonates solvent and electric conducting lithium salt; It is characterized in that: also comprise functional additive, described functional additive is glutaric anhydride.
2. a kind of high-voltage lithium ion batteries function electrolyte according to claim 1, is characterized in that: the addition of described functional additive is equivalent to described conventional lithium-ion battery electrolytes quality 1%～5%.
3. a kind of high-voltage lithium ion batteries function electrolyte according to claim 1, is characterized in that: in described conventional lithium-ion battery electrolytes, the mass ratio of cyclic carbonate ester solvent and linear carbonates solvent is (1:3)～(3:2); The final concentration of electric conducting lithium salt in described conventional lithium-ion battery electrolytes is 0.8～1.2mol/L.
4. a kind of high-voltage lithium ion batteries function electrolyte according to claim 1, is characterized in that: described cyclic carbonate ester solvent is ethylene carbonate; Described linear carbonates solvent is at least one in dimethyl carbonate, methyl ethyl carbonate, diethyl carbonate or methyl propyl carbonate; Described electric conducting lithium salt is LiPF 6, LiBOB, LiSO 3cF 3, LiClO 4, LiAsF 6, Li (CF 3sO 2) 2n or LiC (CF 3sO 2) 3in at least one.
5. according to the preparation method of the high-voltage lithium ion batteries function electrolyte described in claim 1～4 any one, it is characterized in that comprising the steps:
(1) by cyclic carbonate ester solvent and linear carbonates solvent, clarification, dewater, obtain mixed solvent; At ambient temperature, electric conducting lithium salt is added in described mixed solvent, stir, obtain conventional lithium-ion battery electrolytes;
(2) in the conventional lithium-ion battery electrolytes obtaining in step (1), add functional additive, obtain high-voltage lithium ion batteries function electrolyte; Described functional additive is glutaric anhydride.
6. preparation method according to claim 5, is characterized in that: in step (1), the mass ratio of cyclic carbonate ester solvent and linear carbonates solvent is (1:3)～(3:2); The final concentration of described electric conducting lithium salt in described conventional lithium-ion battery electrolytes is 0.8～1.2mol/L.
7. according to the preparation method described in claim 5 or 6, it is characterized in that: the cyclic carbonate ester solvent described in step (1) is ethylene carbonate; Linear carbonates solvent described in step (1) is at least one in dimethyl carbonate, methyl ethyl carbonate, diethyl carbonate or methyl propyl carbonate; Electric conducting lithium salt described in step (1) is LiPF 6, LiBOB, LiSO 3cF 3, LiClO 4, LiAsF 6, Li (CF 3sO 2) 2n or LiC (CF 3sO 2) 3in at least one.
8. preparation method according to claim 5, is characterized in that: the clarification described in step (1), dewater and process by any one or at least two kinds in molecular sieve, activated carbon, calcium hydride, lithium hydride, anhydrous calcium oxide, calcium chloride, phosphorus pentoxide, alkali metal or alkaline-earth metal; Described molecular sieve adopts or type;
Described in step (1), the scope of room temperature is 25～40 ℃.
9. preparation method according to claim 5, is characterized in that: described in step (2), the addition of functional additive is equivalent to 1%～5% of conventional lithium-ion battery electrolytes quality.
10. the application in manufacturing lithium ion battery according to the high-voltage lithium ion batteries function electrolyte described in claim 1～4 any one.
CN201410419347.XA 2014-08-22 2014-08-22 A kind of high voltage lithium ion battery functional electrolyte and preparation method and application Active CN104201416B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410419347.XA CN104201416B (en) 2014-08-22 2014-08-22 A kind of high voltage lithium ion battery functional electrolyte and preparation method and application

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410419347.XA CN104201416B (en) 2014-08-22 2014-08-22 A kind of high voltage lithium ion battery functional electrolyte and preparation method and application

Publications (2)

Publication Number Publication Date
CN104201416A true CN104201416A (en) 2014-12-10
CN104201416B CN104201416B (en) 2016-10-19

Family

ID=52086676

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410419347.XA Active CN104201416B (en) 2014-08-22 2014-08-22 A kind of high voltage lithium ion battery functional electrolyte and preparation method and application

Country Status (1)

Country Link
CN (1) CN104201416B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106099186A (en) * 2016-07-12 2016-11-09 华南师范大学 A kind of high pressure corrosion resistant erosion electrolyte and preparation method and application

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1595711A (en) * 2003-09-09 2005-03-16 三洋电机株式会社 Non-aqueous solvent secondary battery
CN101783526A (en) * 2010-01-31 2010-07-21 黄宇嵩 Electronic switching unit without energy consumption for standby power supply of model airplane receiver
CN103928707A (en) * 2014-05-07 2014-07-16 华南师范大学 High voltage lithium ion battery functional electrolyte and preparation method and application

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1595711A (en) * 2003-09-09 2005-03-16 三洋电机株式会社 Non-aqueous solvent secondary battery
CN101783526A (en) * 2010-01-31 2010-07-21 黄宇嵩 Electronic switching unit without energy consumption for standby power supply of model airplane receiver
CN103928707A (en) * 2014-05-07 2014-07-16 华南师范大学 High voltage lithium ion battery functional electrolyte and preparation method and application

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106099186A (en) * 2016-07-12 2016-11-09 华南师范大学 A kind of high pressure corrosion resistant erosion electrolyte and preparation method and application

Also Published As

Publication number Publication date
CN104201416B (en) 2016-10-19

Similar Documents

Publication Publication Date Title
CN105304936B (en) A kind of lithium rechargeable battery
CN103943883A (en) Application of borate compound serving as additive for high-voltage lithium-ion battery electrolyte
CN103855431B (en) A kind of chemical synthesizing method improving cycle performance of lithium ion battery
CN103730688B (en) Lithium ion battery and electrolyte thereof
CN105070940B (en) A kind of electrolyte containing imine lithium and the battery using the electrolyte
CN105406124B (en) A kind of electrolyte improving high-temperature lithium ion battery and high voltage capability and its application in lithium ion battery
CN103682420A (en) High voltage lithium ion battery functional electrolyte and preparation method and application
CN103700820A (en) Lithium ion selenium battery with long service life
CN102340029A (en) Functional additive applied to non-aqueou electrolyte of lithium ion battery
CN105870501A (en) High-voltage functional electrolyte and preparation method and application therefor
CN105742703A (en) High-voltage functional electrolyte containing LiDFOB additive and preparation and application thereof
CN103579677A (en) Electrolyte and secondary lithium battery and capacitor containing electrolyte
CN103515651A (en) High voltage carbonic ester base electrolyte of lithium ion battery as well as preparation method and application thereof
US10446826B2 (en) Method for making lithium ionic energy storage element
CN102231441A (en) Sulfur-containing electrolyte with film forming function for lithium ion battery as well as preparation method and application thereof
CN103928707A (en) High voltage lithium ion battery functional electrolyte and preparation method and application
CN102760906A (en) Electrolyte additive, electrolyte comprising additive and lithium ion battery
CN105047993A (en) Electrolyte for promoting film formation of graphite cathode and battery using electrolyte
CN105609876B (en) A kind of thiophene ester type compound electrolysis additive and the high-voltage electrolyte containing the electrolysis additive
CN104577044A (en) Lithium titanate battery and preparation method thereof
CN108550902A (en) A kind of all-solid lithium-ion battery and its in-situ preparation method
CN105633464A (en) Trimethyl borate additive contained high-voltage functional electrolyte and preparation method and application therefor
CN109950623A (en) Nickel ion doped anode high-voltage lithium-ion battery electrolyte
CN105390747A (en) Trimethyl borate additive-containing electrolyte solution, preparation method therefor and application thereof
CN103107366A (en) Power lithium ion battery and electrolyte thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20191213

Address after: 400802 Yutianbao group, Pingshan Industrial Park, Wansheng Economic Development Zone, Chongqing

Patentee after: Chongqing Guanyu Battery Co., Ltd

Address before: 510006 , Guangzhou, Panyu District, Guangzhou University, 378 West Ring Road, South China Normal University

Patentee before: South China Normal University

TR01 Transfer of patent right