CN107492631A - A kind of aluminum cell of no collector positive pole - Google Patents
A kind of aluminum cell of no collector positive pole Download PDFInfo
- Publication number
- CN107492631A CN107492631A CN201710684938.3A CN201710684938A CN107492631A CN 107492631 A CN107492631 A CN 107492631A CN 201710684938 A CN201710684938 A CN 201710684938A CN 107492631 A CN107492631 A CN 107492631A
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- China
- Prior art keywords
- collector
- positive pole
- expanded graphite
- cell
- battery
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- 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.)
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Classifications
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
-
- 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 discloses a kind of aluminum cell of no collector positive pole, the anode is self-supporting expandable graphite sheet without collector, being suppressed through 1 30MPa.The use of mixing mol ratio is 1:1.0‑1:1.6 methylimidazolium chloride of 1 ethyl 3 and the mixture of alchlor are electrolyte；According to principle assembling button and soft-package battery without collector.Expanded graphite of the present invention is cheap, facilitates electrode moulding, and the cost of collector, greatly reduction electrokinetic cell in cell assembling processes can be saved by suppressing the positive electrode of film forming.Meanwhile expanded graphite positive electrode, the specific capacity and high rate performance of electrokinetic cell, potential substitution power lithium-ion battery can also be greatly improved.
Description
Technical field
The invention belongs to novel battery field, is related to a kind of aluminum cell of no collector positive pole.
Background technology
With reply Global climate change《Reach an agreement in Paris》Signature, countries in the world are all being directed to energy-saving and emission-reduction.Europe
The fuel-engined vehicle discharge standard and the subsidy policy of new-energy automobile that continent, the U.S. have released one after another strict, Chinese Government also exist
Actively promote the development of new-energy automobile.By policy driving, since 2015, the major automobile making commercial city in the world accelerates to release
The electric automobile of respective brand, wherein tesla Model3 are extensively concerned.
As the power lithium-ion battery of driving electric automobile, mainly by nickel-cobalt-manganese ternary material, LiFePO4 conduct
Positive electrode, carbonic acid alkenes ester is as electrolyte primary solvent.Power lithium-ion battery charging and discharging capabilities typically are up to 1.5A/
More than g, in actual use about 0.5A/g or so, to meet the driving demand of electric automobile.Current driving force lithium ion battery
Energy density between 120-220Wh/kg, battery pack power density about 100Wh/kg.Power lithium-ion battery is primarily present
The problem of be：(1) capacity of positive electrode is always held at 150mAh/g or so, and technology is difficult to have breakthrough at present；(2) positive pole
The price of material remains high always, limits popularizing for electric automobile；(3) during large current density, positive electrode
Stability it is poor, simultaneously because being substantially reduced using carbonic acid alkenes ester as electrolyte primary solvent, the security of battery, at present
Had been reported that during the battery deflagration accident of electric automobile.
Stanford University professor Dai Hongjie have studied one kind using pyrolytic graphite as positive pole, metallic aluminium be negative pole, ionic liquid
For the aluminium ion battery of electrolyte, there are ultrafast charging and discharging capabilities, can the continuous discharge and recharge under 4A/g current density, hold
Amount keeps 60mAh/g or so.By calculating, its energy density reaches 40Wh/kg, suitable with plumbic acid, Ni-MH battery energy density；
Its power density reaches 3kW/kg, close with the power density of ultracapacitor.Further, since aluminium ion battery has used ion
Liquid is greatly improved as electrolyte, the security of battery, and the burning that occurs during lithium ion battery use can be avoided quick-fried
Fried accident.But pyrolytic graphite positive electrode is that chemical gaseous phase depositing process preparation occurs in nickel foam by methane gas
, also need to remove nickel foam with hydrochloric acid after the completion of pyrolytic graphite deposition, whole technological process is complicated, is not easy to industrialize.
In the assembling process of power lithium-ion battery, collector of the aluminium foil as positive electrode is typically used.Wearing
In the aluminium ion battery of professor's Hong Jie research, then the collector using vitreous carbon as pyrolytic graphite positive electrode.Collector
Main function is the internal resistance for reducing battery.
The content of the invention
It is an object of the present invention to provide a kind of aluminum cell of no collector positive pole, solves existing aluminium ion cell positive electrode
The problem of preparation technology complexity, while plus plate current-collecting body is eliminated, improve the specific capacity and high rate performance of aluminium ion battery.
The technical solution adopted in the present invention is：A kind of aluminum cell of no collector positive pole, it is just extremely without collector, from
The expandable graphite sheet of support, electrolyte are 1- ethyl-3-methylimidazoles chloride and alchlor according to mol ratio 1:1.0~1:
The mixture of 1.6 compositions；No collector, the self-supporting expandable graphite sheet is by pressure pressure of the expanded graphite through 1-30MPa
Film is made, directly contacts with anode cover in button cell, is joined directly together in soft-package battery by conducting resinl and lug.
Further, there is barrier film, the barrier film is made up of the glass fibre of 1-5 layers between the positive pole and negative pole.
Further, the negative pole is aluminium foil, aluminium flake etc..
The beneficial effects of the present invention are：Expanded graphite is cheap, facilitates electrode moulding, suppresses the positive electrode of film forming also
The collector in cell assembling processes can be saved, greatly reduces the cost of electrokinetic cell.Meanwhile expanded graphite positive pole material
Material, the specific capacity and high rate performance of electrokinetic cell, potential substitution power lithium-ion battery can also be greatly improved.
Brief description of the drawings
Fig. 1 be embodiment 1 prepare, the cycle performance figure of button cell without collector expanded graphite positive pole.
Fig. 2 be embodiment 2 prepare, the cycle performance figure of button cell without collector expanded graphite positive pole.
Fig. 3 be embodiment 3 prepare, the cycle performance figure of soft-package battery without collector expanded graphite positive pole.
Embodiment
With reference to embodiment, the present invention is further elaborated.
It should be noted that embodiments herein is merely to illustrate the present invention, rather than limitation the scope of the present invention.
It shall yet further be noted that after present disclosure is read, various changes that those skilled in the art are done to the present invention and
Modification, these equivalent form of values also belong to the restriction scope of claims of the present invention.
Embodiment 1：
(1) business expanded graphite is suppressed into film forming using 1MPa pressure, as positive pole；
(2) 5 layers of glass fibre (Whatman) are used as the barrier film between positive pole and negative pole aluminium foil；
(3) the use of the mixture of alchlor and 1- ethyl-3-methylimidazole chlorides is electrolyte, 1- ethyl -3- first
Base imidazolium chloride mixes mol ratio with alchlor as 1:1.0；
(4) button cell is assembled in the following order：The expansion prepared in above-mentioned (1) is put into anode cover (CR2025)
Graphite cathode film, both directly contact；Then on expanded graphite cathode film, 5 layers of fibreglass diaphragm (Whatman) is put,
Appropriate mixed proportion 1 is added dropwise:1.0 electrolyte；Then negative pole aluminium foil is put on fibreglass diaphragm (Whatman), is alignd
Compacting, is covered negative electrode casing, is finally encapsulated using button cell sealing machine.
Using blue electrical measurement test system, 5A/g constant current charge-discharge experiments are carried out to the button cell of above-mentioned assembling, found this
The capacity of button cell without collector expanded graphite positive pole may remain in 70mAh/g.As shown in Figure 1.
Embodiment 2：
(1) business expanded graphite is suppressed into film forming using 20MPa pressure, as positive pole；
(2) 3 layers of glass fibre (Whatman) are used as the barrier film between positive pole and negative pole aluminium flake；
(3) the use of the mixture of alchlor and 1- ethyl-3-methylimidazole chlorides is electrolyte, 1- ethyl -3- first
Base imidazolium chloride mixes mol ratio with alchlor as 1:1.4；
(4) button cell is assembled in the following order：The expansion prepared in above-mentioned (1) is put into anode cover (CR2025)
Graphite cathode film, both directly contact；Then on expanded graphite cathode film, 3 layers of fibreglass diaphragm (Whatman) is put,
Appropriate mixed proportion 1 is added dropwise:1.4 electrolyte；Then negative pole aluminium flake is put on fibreglass diaphragm (Whatman), is alignd
Compacting, is covered negative electrode casing, is finally encapsulated using button cell sealing machine.
Using blue electrical measurement test system, 5A/g constant current charge-discharge experiments are carried out to the button cell of above-mentioned assembling, found this
The capacity of button cell without collector expanded graphite positive pole may remain in 80mAh/g.As shown in Figure 2.
Embodiment 3：
(1) business expanded graphite is suppressed into film forming using 30MPa pressure, as positive pole；
(2) 1 layer of glass fibre (Whatman) is used as the barrier film between positive pole and negative pole aluminium foil；
(3) the use of the mixture of alchlor and 1- ethyl-3-methylimidazole chlorides is electrolyte, 1- ethyl -3- first
Base imidazolium chloride mixes mol ratio with alchlor as 1:1.6；
(4) soft-package battery is assembled in the following order：The expanded graphite cathode film that will be prepared using conducting resinl in above-mentioned (1)
It is joined directly together with nickel lug, the positive pole as soft-package battery；Negative pole with aluminium foil directly as soft-package battery；In expanded graphite just
Between pole film and aluminium foil negative pole, 1 layer of fibreglass diaphragm (Whatman) is placed, alignment is fixed, is put into soft-package battery bag,
Add appropriate mixed proportion 1:1.6 electrolyte, finally encapsulated using soft-package battery packaging machine.
Using blue electrical measurement test system, 5A/g constant current charge-discharge experiments are carried out to the soft-package battery of above-mentioned assembling, found this
The capacity of soft-package battery without collector expanded graphite positive pole may remain in 85mAh/g.As shown in Figure 3.
Claims (3)
- A kind of 1. aluminum cell of no collector positive pole, it is characterised in that just extremely without collector, self-supporting expanded graphite Film, electrolyte are 1- ethyl-3-methylimidazoles chloride and alchlor according to mol ratio 1:1.0~1:The mixing of 1.6 compositions Thing；No collector, the self-supporting expandable graphite sheet suppresses film forming by pressure of the expanded graphite through 1-30MPa, in button Directly contact with anode cover in battery, be joined directly together in soft-package battery by conducting resinl and lug.
- 2. aluminum cell according to claim 1, it is characterised in that there is barrier film between the positive pole and negative pole, it is described every Film is made up of the glass fibre of 1-5 layers.
- 3. aluminum cell according to claim 1, it is characterised in that the negative pole is aluminium foil, aluminium flake etc..
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710684938.3A CN107492631A (en) | 2017-08-11 | 2017-08-11 | A kind of aluminum cell of no collector positive pole |
| PCT/CN2018/084350 WO2019029192A1 (en) | 2017-08-11 | 2018-04-25 | Aluminum battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710684938.3A CN107492631A (en) | 2017-08-11 | 2017-08-11 | A kind of aluminum cell of no collector positive pole |
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| Publication Number | Publication Date |
|---|---|
| CN107492631A true CN107492631A (en) | 2017-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710684938.3A Pending CN107492631A (en) | 2017-08-11 | 2017-08-11 | A kind of aluminum cell of no collector positive pole |
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| CN (1) | CN107492631A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019029192A1 (en) * | 2017-08-11 | 2019-02-14 | 杭州高烯科技有限公司 | Aluminum battery |
| CN111525114A (en) * | 2020-05-09 | 2020-08-11 | 四川聚创石墨烯科技有限公司 | Method for continuously preparing current collector-free silicon-carbon negative electrode paper |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764258A (en) * | 2009-11-20 | 2010-06-30 | 无锡欧力达新能源电力科技有限公司 | Secondary aluminium cell and preparation method thereof |
| JP2014222609A (en) * | 2013-05-13 | 2014-11-27 | 学校法人 関西大学 | Aluminum secondary battery |
| CN104810544A (en) * | 2015-04-20 | 2015-07-29 | 北京科技大学 | Rechargeable aluminum ion battery and preparation method thereof |
| CN105406112A (en) * | 2015-12-09 | 2016-03-16 | 江苏科技大学 | Aluminium battery and preparation method |
| CN106654300A (en) * | 2016-12-19 | 2017-05-10 | 中国科学院山西煤炭化学研究所 | Method for preparing monodisperse metal atom/graphene composite material employing electrochemical dissolved graphite |
-
2017
- 2017-08-11 CN CN201710684938.3A patent/CN107492631A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764258A (en) * | 2009-11-20 | 2010-06-30 | 无锡欧力达新能源电力科技有限公司 | Secondary aluminium cell and preparation method thereof |
| JP2014222609A (en) * | 2013-05-13 | 2014-11-27 | 学校法人 関西大学 | Aluminum secondary battery |
| CN104810544A (en) * | 2015-04-20 | 2015-07-29 | 北京科技大学 | Rechargeable aluminum ion battery and preparation method thereof |
| CN105406112A (en) * | 2015-12-09 | 2016-03-16 | 江苏科技大学 | Aluminium battery and preparation method |
| CN106654300A (en) * | 2016-12-19 | 2017-05-10 | 中国科学院山西煤炭化学研究所 | Method for preparing monodisperse metal atom/graphene composite material employing electrochemical dissolved graphite |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019029192A1 (en) * | 2017-08-11 | 2019-02-14 | 杭州高烯科技有限公司 | Aluminum battery |
| CN111525114A (en) * | 2020-05-09 | 2020-08-11 | 四川聚创石墨烯科技有限公司 | Method for continuously preparing current collector-free silicon-carbon negative electrode paper |
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Application publication date: 20171219 |
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