CN107069022A - A kind of chargeable ionic liquid Dual-ion cell and preparation method thereof - Google Patents

A kind of chargeable ionic liquid Dual-ion cell and preparation method thereof Download PDF

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Publication number
CN107069022A
CN107069022A CN201710201730.1A CN201710201730A CN107069022A CN 107069022 A CN107069022 A CN 107069022A CN 201710201730 A CN201710201730 A CN 201710201730A CN 107069022 A CN107069022 A CN 107069022A
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Prior art keywords
ionic liquid
chargeable
graphite
positive
ion cell
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袁文辉
范佳鑫
李莉
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South China University of Technology SCUT
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South China University of Technology SCUT
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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
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite
    • 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
    • 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 present invention discloses a kind of chargeable ionic liquid Dual-ion cell and preparation method thereof.The Dual-ion cell includes positive pole, negative pole, electrolyte and barrier film, and positive and negative pole material is graphite-structure carbon material, and electrolyte is bis-trifluoromethylsulfoandimide ionic liquid.During preparation, both positive and negative polarity graphite-structure carbon material, barrier film are first processed into slabbing, is then assembled in nitrogen glove box and triplex glass fibre diaphragm is put between button cell, both positive and negative polarity.During charging, the cation in battery of the present invention is from electrolyte is embedded into negative pole graphite, and double (trifluoro methylsulfonyl) anions are embedded into positive pole graphite；During electric discharge, two kinds of ions again respectively from graphite deintercalation and enter electrolyte.Battery of the present invention possesses 4.4V discharge voltage plateau, 82mAh/g specific capacity, 258Wh/kg energy density under 30mA/g discharge current；The charging/discharging voltage for possessing extremely wide 1.0-5.0V is interval.

Description

A kind of chargeable ionic liquid Dual-ion cell and preparation method thereof
Technical field
The present invention relates to secondary cell field, and in particular to a kind of chargeable ionic liquid Dual-ion cell.
Background technology
Energy issue of world becomes increasingly conspicuous, and green regenerative energy sources enjoy favor, high power capacity, low cost, it is long-life can The research of rechargeable battery has highly important meaning.
Lithium ion battery applications are extensive now, but there are three big subject matters：(1) lithium resource is limited, expensive；(2) Carbonates electrolyte easily burns, and potential safety hazard is high；(3) decomposition due to organic solvent under high potential, with discharge and recharge Number of times increase, capacity is gradually decayed.The demand of the new battery system of design is extremely urgent.
Chinese invention patent application 201010177429X discloses a kind of with high reversible capacity and first charge-discharge efficiency Negative pole system of lithium ion battery；The invention is directed to MCMB, three kinds of lithium ion batteries of Delanium or native graphite Negative material, using by LiPF6Or LiN (CF3SO2)2It is dissolved in the double trifluoro methylsulfonyls of ionic liquid 1- ethyl-3-methylimidazoles Electrolyte solution formed by inferior amine salt or N- methyl, propylpiperdine bis-trifluoromethylsulfoandimide salt.In this electrolyte solution In, reversible capacity and the first charge-discharge efficiency of lithium ion battery negative material are improved significantly.May be used also in electrolyte solution Add the electrochemistry that organic solvent propene carbonate, ethylene carbonate, dimethyl carbonate or methyl ethyl carbonate adjust negative material Performance.However, the battery is using traditional lithium salts as electrolyte, limited lithium resource is difficult in face of the new period to the big of energy storage device Amount demand；The cell discharge voltage platform is relatively low, it is difficult to meet the demand of widely used more than 4.0V electrical equipments now；Together When, the addition of carbonate based organic solvent can influence the long period cycle performance of battery to a certain degree.
The content of the invention
The problem of existing for prior art, it is contemplated that a kind of secondary cell that may replace lithium ion battery is sought, Using the higher element of nature abundance design new battery system there is provided a kind of chargeable ionic liquid Dual-ion cell and its Preparation method, makes it have the advantages that battery capacity height, cyclicity are good, cheap, safe.
Ionic liquid Dual-ion cell of the present invention uses Delanium, native graphite or MCMB graphite type material Simultaneously electrolyte is used as battery plus-negative plate, pure ionic liquid.Electrode and electrolyte substance only contain six kinds of C, H, O, N, F, S Nonmetalloid, it is wide material sources, cheap；Ionic liquid has high conductance, non-combustible, nontoxicity, and security performance is high； The negative ions of ionic liquid can be in the space layer structure of intercalation/deintercalation graphite, during circulating battery, capacity attenuation rate It is extremely low.The battery has a wide range of applications.
The present invention relative to the patent application document in background technology, maximum advantage be exactly in electrolyte without lithium salts, And individually it is used as electrolyte with ionic liquid；Its mechanism is：During charging, cation (such as 1- butyl -1- methyl piperidine ions PP14 +) from electrolyte is embedded into negative pole graphite, double (trifluoro methylsulfonyl) anions (TFSI-) are embedded into positive pole graphite；Electric discharge When, two kinds of ions again respectively from graphite deintercalation and enter electrolyte, so as to reach the storage and transmission of energy.
To reach as above target, the present invention is adopted the following technical scheme that：
A kind of chargeable ionic liquid Dual-ion cell, includes positive pole, negative pole, electrolyte and barrier film, described both positive and negative polarity Material is graphite-structure carbon material, and electrolyte is bis-trifluoromethylsulfoandimide ionic liquid.
The graphite-structure carbon material is Delanium, native graphite, MCMB or graphene.
It is sub- that the bis-trifluoromethylsulfoandimide ionic liquid includes 1- butyl -1- methyl piperidines double (fluoroform sulphonyl) Amine salt (PP14TFSI), double (fluoroform sulphonyl) inferior amine salt (Pyr of 1- butyl -1- crassitudes14TFSI), tributyl-methyl phosphonium Double (fluoroform sulphonyl) inferior amine salt (N of ammonium4441TFSI), double (fluoroform sulphonyl) inferior amine salts of 1- ethyl-3-methylimidazoles (EMImTFSI), double (fluoroform sulphonyl) inferior amine salts (BMImTFSI) of 1- butyl -3- methylimidazoles or 1- propyl group -2,3- diformazans Double (fluoroform sulphonyl) inferior amine salts (PMMImTFSI) of base imidazoles.
The barrier film is glass fiber filter paper.
The preparation method of described chargeable ionic liquid Dual-ion cell, it is characterised in that including following preparation process：
1) both positive and negative polarity graphite-structure carbon material is prepared, and itself and barrier film are processed into slabbing；
2) assembled in nitrogen glove box and layer of glass barrier film is put between button cell, both positive and negative polarity.
The step 1) processing mode is, will graphitic carbon material, conductive agent and binding agent mix after be coated on copper foil or aluminium On paper tinsel, positive and negative pole material is used as.
The step 2) assembled battery, add about 0.3mL bis-trifluoromethylsulfoandimide ionic liquid electrolyte.
Relative to prior art, battery of the present invention shows good chemical property：
(1) volumetric properties：Possess 4.4V discharge voltage plateau, 82mAh/g specific capacity, 258Wh/kg energy density (discharge current 20mA/g, 0.3C, note：1C=100mAh/g)；
(2) cycle performance：Cycle charge-discharge 600 times is without the decay of capacity, and coulombic efficiency is higher than 95% (electric discharge electricity Stream：300mA/g, 3C).Discharge and recharge is interval wide, can not have obvious capacity attenuation by cycle charge-discharge between 1.0-5.0V.
(3) security performance：Battery comprises only room temperature fused salt ionic liquid, non-combustible without any organic component, safety Property is high；
(4) cost-performance：In the positive and negative pole material and electrolyte of battery be free of metallic element, only containing C, H, O, N, F, Six kinds of S has a high natural abundance nonmetalloid, wide material sources, cheap.
Battery of the present invention, which may replace lithium ion battery, turns into the direction of following battery development.
Brief description of the drawings
Fig. 1 is chargeable ionic liquid Dual-ion cell charge-discharge performance test curve prepared by embodiment 1.
Fig. 2 is chargeable ionic liquid Dual-ion cell cycle performance test curve prepared by embodiment 1.
Embodiment
To more fully understand the present invention, the present invention is further illustrated with reference to the accompanying drawings and examples, but implements Example does not constitute the limitation to the claims in the present invention protection domain.
Embodiment 1
Graphite material (95.7% native graphite, 2.8% carboxylic styrene butadiene latex SBR and 1.5% sodium carboxymethylcellulose CMC) Simultaneously as battery plus-negative plate material, negative current collector is copper foil, and plus plate current-collecting body is aluminium foil.By electrode material section machine-cut Into the disk of 14mm diameters, graphite active material content is 9mg.Glass fiber filter paper is cut into the disk of 19mm diameters, makees electricity Pond barrier film.
CR2025 button cells (20 are assembled in nitrogen glove box：Diameter 20mm；25：Height 2.5mm).By above-mentioned battery Positive electrode is assembled in the following order：Anode cover, positive plate (0.05mm is thick), triplex glass fibre diaphragm (about 0.9mm It is thick), negative plate (0.05mm is thick), stainless steel gasket (1.3mm is thick), plus during barrier film, 0.3mL 1- butyl -1- methyl piperazines are added dropwise Pyridine bis-trifluoromethylsulfoandimide salt (PP14TFSI) electrolyte.Battery is taken out from glove box, is suppressed on buckle battery mouth sealer Go out qualified battery.After battery is installed, charge-discharge test is carried out.
As shown in figure 1, in 1.0-5.0V voltage ranges, carrying out discharge and recharge to battery in 0.3C-4C current strength respectively. Under 0.3C current strength, battery shows 4.4V discharge platform, 82mAh/g specific capacity, and 258Wh/kg energy Density.0.9C, 2C, 4C cycle performance are also tested simultaneously.The discharge voltage of the present embodiment design battery is better than background technology Described in patent battery system.
As shown in Fig. 2 under 1.0-5.0V voltage ranges, 300mA/g (3C) charging and discharging currents, testing the cyclicity of battery Energy.The battery is after 600 times circulate, capacity retention about 100%, and coulombic efficiency is higher than 95%.
Embodiment 2
Graphite material (80% MCMB, 10% polyvinylidene fluoride PVDF and 10% conductive agent acetylene black) is simultaneously As battery plus-negative plate material, negative current collector is copper foil, and plus plate current-collecting body is aluminium foil.Electrode material is cut into slicer The disk of 14mm diameters, graphite active material content is 2.3mg.Glass fiber filter paper is cut into the disk of 19mm diameters, makees electricity Pond barrier film.
CR2025 button cells (20 are assembled in nitrogen glove box：Diameter 20mm；25：Height 2.5mm).By above-mentioned battery Positive electrode is installed following order and assembled：Anode cover, positive plate (0.05mm is thick), triplex glass fibre diaphragm (about 0.9mm It is thick), negative plate (0.05mm is thick), stainless steel gasket (1.3mm is thick), plus during barrier film, 0.3mL 1- butyl -1- methyl pyrroles are added dropwise Cough up alkane bis-trifluoromethylsulfoandimide salt (Pyr14TFSI) electrolyte.Battery is taken out from glove box, on buckle battery mouth sealer Suppress qualified battery.After battery is installed, charge-discharge test is carried out in 0.1-5.0V voltage ranges, battery shows 4.4V's Discharge platform, first discharge capacity 65mAh/g.Circulation survey is carried out with the electric current of 111mA/g multiplying powers in 0.1-5.0V voltage ranges 20 circulation volume retention 81.7% before examination, battery.
Embodiment 3
Graphite material (80% Delanium, 10% polyvinylidene fluoride PVDF and 10% conductive agent acetylene black) is while conduct Battery plus-negative plate material, negative current collector is copper foil, and plus plate current-collecting body is aluminium foil.Electrode material with slicer is cut into 14mm straight The disk in footpath, graphite active material content is 2.3mg.Glass fiber filter paper is cut into the disk of 19mm diameters, makees battery diaphragm.
CR2025 button cells (20 are assembled in nitrogen glove box：Diameter 20mm；25：Height 2.5mm).By above-mentioned battery Positive electrode is installed following order and assembled：Anode cover, positive plate (0.05mm is thick), triplex glass fibre diaphragm (about 0.9mm It is thick), negative plate (0.05mm is thick), stainless steel gasket (1.3mm is thick), plus during barrier film, 0.3mL 1- ethyl -3- methyl miaows are added dropwise Double (fluoroform sulphonyl) inferior amine salt (EMImTFSI) electrolyte of azoles.Battery is taken out from glove box, in buckle battery mouth sealer On suppress qualified battery.After battery is installed, charge-discharge test is carried out in 0.1-4.30V voltage ranges, battery possesses 4.0V Voltage platform.Loop test is carried out with the electric current of 500mA/g multiplying powers in 0.1-4.30V voltage ranges, 50mAh/g electric discharge is held Amount, circulates 350 times without capacity attenuation, coulombic efficiency is higher than 93%.

Claims (7)

1. a kind of chargeable ionic liquid Dual-ion cell, includes positive pole, negative pole, electrolyte and barrier film, it is characterised in that
Described positive and negative pole material is graphite-structure carbon material, and the electrolyte is bis-trifluoromethylsulfoandimide salt ion liquid Body.
2. chargeable ionic liquid Dual-ion cell as claimed in claim 1, it is characterised in that the graphite-structure carbon material For Delanium, native graphite, MCMB or graphene.
3. chargeable ionic liquid Dual-ion cell as claimed in claim 1, it is characterised in that described pair of trifluoro methylsulfonyl is sub- Amine salt ionic liquid is double (fluoroform sulphonyl) inferior amine salts of 1- butyl -1- methyl piperidines, 1- butyl -1- crassitudes pair Double (fluoroform sulphonyl) inferior amine salts of (fluoroform sulphonyl) inferior amine salt, tributyl-methyl phosphonium ammonium, 1- ethyl-3-methylimidazoles are double Double (fluoroform sulphonyl) inferior amine salts of (fluoroform sulphonyl) inferior amine salt, 1- butyl -3- methylimidazoles or 1- propyl group -2,3- diformazans Double (fluoroform sulphonyl) inferior amine salts of base imidazoles.
4. chargeable ionic liquid Dual-ion cell as claimed in claim 1, it is characterised in that the barrier film is glass fibre Filter paper.
5. the preparation method of the chargeable ionic liquid Dual-ion cell described in claim any one of 1-4, it is characterised in that bag Include following preparation process：
1) positive and negative pole material is prepared, and itself and barrier film are processed into slabbing；
2) assembled in nitrogen glove box and triplex glass fibre diaphragm is put between button cell, both positive and negative polarity.
6. the preparation method of chargeable ionic liquid Dual-ion cell as claimed in claim 5, it is characterised in that the step 1) processing mode is to be coated on after mixing graphitic carbon material, conductive agent and binding agent on copper foil or aluminium foil, be used as both positive and negative polarity material Material.
7. the preparation method of chargeable ionic liquid Dual-ion cell as claimed in claim 5, it is characterised in that the step 2) assembled battery, adds about 0.3mL bis-trifluoromethylsulfoandimide ionic liquid electrolyte.
CN201710201730.1A 2017-03-30 2017-03-30 A kind of chargeable ionic liquid Dual-ion cell and preparation method thereof Pending CN107069022A (en)

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN108321394A (en) * 2018-01-15 2018-07-24 山东科技大学 A kind of Dual-ion cell and preparation method thereof
CN108400332A (en) * 2018-03-09 2018-08-14 中国科学院青岛生物能源与过程研究所 A kind of organic double ion embedded type flow battery
CN108511790A (en) * 2018-03-21 2018-09-07 北京科技大学 One kind being based on PP14NTF2The preparation of electrolyte Dual-ion cell and test method
CN108615932A (en) * 2018-03-30 2018-10-02 南京大学 Negative and positive double ion rocking chair type secondary cell and preparation method thereof
CN108711636A (en) * 2018-06-01 2018-10-26 南京大学 A kind of combination electrolyte double ion rocking chair type secondary cell and preparation method thereof
CN109560339A (en) * 2018-11-27 2019-04-02 中国科学院青岛生物能源与过程研究所 A kind of pre- embedding anion method and full battery
CN110828881A (en) * 2019-08-28 2020-02-21 深圳先进技术研究院 Dual-ion battery and preparation method thereof
CN116259923A (en) * 2023-01-31 2023-06-13 刘勇 Preparation method and device of lithium battery diaphragm

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108321394A (en) * 2018-01-15 2018-07-24 山东科技大学 A kind of Dual-ion cell and preparation method thereof
CN108400332A (en) * 2018-03-09 2018-08-14 中国科学院青岛生物能源与过程研究所 A kind of organic double ion embedded type flow battery
CN108400332B (en) * 2018-03-09 2021-03-05 中国科学院青岛生物能源与过程研究所 Organic double-ion embedded flow battery
CN108511790A (en) * 2018-03-21 2018-09-07 北京科技大学 One kind being based on PP14NTF2The preparation of electrolyte Dual-ion cell and test method
CN108615932A (en) * 2018-03-30 2018-10-02 南京大学 Negative and positive double ion rocking chair type secondary cell and preparation method thereof
CN108711636A (en) * 2018-06-01 2018-10-26 南京大学 A kind of combination electrolyte double ion rocking chair type secondary cell and preparation method thereof
CN109560339A (en) * 2018-11-27 2019-04-02 中国科学院青岛生物能源与过程研究所 A kind of pre- embedding anion method and full battery
CN109560339B (en) * 2018-11-27 2021-12-03 中国科学院青岛生物能源与过程研究所 Method for pre-embedding anions and full battery
CN110828881A (en) * 2019-08-28 2020-02-21 深圳先进技术研究院 Dual-ion battery and preparation method thereof
CN116259923A (en) * 2023-01-31 2023-06-13 刘勇 Preparation method and device of lithium battery diaphragm
CN116259923B (en) * 2023-01-31 2024-01-05 南京贝迪新材料科技股份有限公司 Preparation method of lithium battery diaphragm

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Application publication date: 20170818