CN102779974A - Nanometer cell and manufacturing method for processing of same - Google Patents
Nanometer cell and manufacturing method for processing of same Download PDFInfo
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- CN102779974A CN102779974A CN2011101189356A CN201110118935A CN102779974A CN 102779974 A CN102779974 A CN 102779974A CN 2011101189356 A CN2011101189356 A CN 2011101189356A CN 201110118935 A CN201110118935 A CN 201110118935A CN 102779974 A CN102779974 A CN 102779974A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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 invention relates to a nanometer cell which comprises positive and negative electrodes of the cell, electrolyte and a diaphragm. According to a technical scheme in the invention, a positive electrode material of the cell is obtained after grinding of lithium synthetic powder; a negative electrode material of the cell is obtained after grinding of elemental carbon powder; the electrolyte is prepared from inorganic anion conductive salt and an organic solvent; the polymer diaphragm is a three-layer microporous membrane compounded by polypropylene (PP) and polyethylene (PE) and is processed and manufactured through the two procedures of grinding and ultrasonic treatment and addition of nanometer carbon fibers with good conductivity, which is beneficial for improving tap density of the cell, increasing the capacity of the cell, enhancing charging and discharging performances of the cell and strengthening conduction performance of the cell. Since density and conductivity of the cell are improved, the cell can realize charging and discharging at a high rate, damage caused by charging and discharging to the cell can be reduced, and therefore, the service life of the cell is prolonged. Furthermore, a manufacturing method provided by the invention has the advantages of easy and convenient operation and low cost.
Description
[technical field]
The present invention relates to a kind of battery, specifically is a kind of nano cell that is applied to nanometer technology.
[background technology]
The constantly progressive forward and development along with science and technology, it is increasingly high to the battery performance requirement to be accompanied by various electronic digital products.Most of battery all is to adopt two or more heterogeneity electrochemical activity electrode to combine positive and negative electrode and be soaked in can provide the electrolyte of medium conduction to form.Yet the battery major part all is to adopt lithium battery material to constitute in the prior art.Because lithium battery material is very active, and particle is big, and tap density is low, causes the fail safe of described battery not high, that poor electric conductivity and battery charge and discharge performance is low, and heating easily can not heavy-current discharge, has explosion hazard.
[summary of the invention]
Technical purpose of the present invention is to provide a kind of for the problem that solves above-mentioned prior art existence to improve volumetric properties, battery charging and discharging ability performance, the electric conductivity of battery storage electric energy and can prolong the battery nano cell in useful life.
Technical purpose of the present invention also provides a kind of manufacturing approach with this nano cell of processing simple to operation, that cost is low.
In order to realize above-mentioned technical purpose, a kind of nano cell provided by the present invention, it comprises what battery positive and negative electrode material, electrolyte and membrane for polymer constituted; It is characterized in that: described battery positive electrode material is ground by the lithium compound powder and forms; Described cell negative electrode material is ground by carbon simple substance powder and forms; Described electrolyte adds that by inorganic anion conducting salt electrolyte organic solvent is mixed with; Described membrane for polymer is by polypropylene (PP) and the compound multilayer microporous film of polyethylene (PE) and process film.
The above-mentioned major technique characteristic of foundation, said lithium compound powder packets contain LiMn2O4 powder or iron phosphate powder or cobalt acid lithium powder or nickle cobalt lithium manganate powder.
According to above-mentioned major technique characteristic, said carbon simple substance powder packets contains powdered graphite or carbon dust.
According to above-mentioned major technique characteristic, said electrolyte solution includes lithium hexafluoro phosphate (LiPF6) solution or hexafluoroarsenate lithium (LiAsF6) solution or lithium perchlorate (LiClO4) solution or thionyl chloride (SoCL2) solution.
In order to process above-mentioned nano cell, and adopt machining manufacture to be:
Cell positive material nanometer chemical industry preface: earlier described lithium compound powder is poured in the specified containers according to preset proportion, full and uniform stirring makes to form uniform cell positive material; Then, cell positive material is put into ball mill, be ground to micron particles; Again micron particles is dissolved in the organic solvent and forms micron particles solution, utilize ultrasonic wave to this micron particles solution-treated setting-up time again after, the high temperature distillation extraction; Be cooled to subzero 20 degree then; Use high-strength focused ion beam-electron beam two-beam to handle the back and form pure particle, again this pure particle is ground to nano particle, i.e. nanometer electrochemical cell positive electrode; Described lithium compound powder packets contains LiMn2O4 powder or iron phosphate powder or cobalt acid lithium powder or nickle cobalt lithium manganate powder;
Cell negative electrode material nanometer chemical industry preface: earlier said carbon simple substance powder is poured in the specified containers according to the ratio of preestablishing, full and uniform stirring makes to form uniform cell negative electrode material; Utilize ball mill grinding to become micron particles this cell negative electrode material again; Again described micron particles is dissolved in the organic solvent and forms micron particles solution, utilize ultrasonic wave to this micron particles solution-treated setting-up time again after, carry out the high temperature distillation extraction; Cool off subzero 20 degree then down; Use high-strength focused ion beam-electron beam two-beam to handle the back and form pure particle, again this pure particle is ground to nano particle, be the nanometer negative material; Said carbon compound powder packets contains powdered graphite or carbon dust;
Electrolyte nanometer chemical industry preface: earlier with described electrolyte dissolution in organic solvent; Form electrolyte, the carbon nano-fiber that will have conduction again adds in the described electrolyte, stirs; And after using ultrasonic wave that this electrolyte that is added with carbon nano-fiber is handled setting-up time, get final product; Said electrolyte solution includes lithium hexafluoro phosphate (LiPF6) solution or hexafluoroarsenate lithium (LiAsF6) solution or lithium perchlorate (LiClO4) solution or thionyl chloride (SoCL2) solution;
The film-making roll process: the two sides of above-mentioned nanometer electrochemical cell positive electrode evenly being coated aluminium foil also flattens, and the two sides of nanometer electrochemical cell negative material evenly being coated Copper Foil also flattens, and gets final product;
Coiling operation: the aluminium foil and the Copper Foil stack that scribbles nanometer electrochemical cell negative material that will scribble nanometer electrochemical cell positive electrode; Middle be combined into polypropylene (PP) and polyethylene (PE) that micro-pore septum separates; Require to be wound into shape not of the same race according to preestablishing then; Draw the both positive and negative polarity of battery with the nickel sheet, and put into metal-back or soft shape bag;
Inject the electrolyte operation: the electrolyte of nanometerization is injected in the battery, and draw both positive and negative polarity, get final product
Enclosed package: weld two positive and negative electrodes, sealing gets final product
Useful technique effect of the present invention: technical scheme of the present invention adopts said battery positive electrode to be ground by the lithium compound powder and forms; Described GND is ground by carbon simple substance powder and forms; Described electrolyte adds that by the inorganic anion conducting salt organic solvent is mixed with; Described membrane for polymer is by polypropylene (PP) and the compound multilayer microporous film of polyethylene (PE) and process film; Form through grinding with ultrasonic wave two procedures and the good carbon nano-fiber processing and manufacturing of adding conductivity; Help improving cell density; Reach and improve battery capacity performance and battery charging and discharging performance, simultaneously, help improving electric conductivity.Because said cell density has been improved, and makes battery can use higher multiplying power to discharge and recharge, reduces discharging and recharging, thereby reach the useful life that prolongs battery cell damage.Owing to adopt above-mentioned manufacturing processing method, compare each other with processing method of the prior art again, the present invention also has useful technique effect simple to operation and that cost is low.
For the object of the invention, technical characterictic and function thereof are had further understanding, specify as follows now:
[embodiment]
Below in conjunction with a kind of embodiment a kind of nano cell provided by the present invention is described, it comprises what battery positive and negative electrode, electrolyte and membrane for polymer constituted; Described battery positive electrode material is ground by the lithium compound powder and forms; Described cell negative electrode material is ground by carbon simple substance powder and forms; Described electrolyte adds that by electrolyte solution organic solvent is mixed with; Described membrane for polymer is by polypropylene (PP) and the compound multilayer microporous film of polyethylene (PE) and process film.
Said lithium compound powder packets contains LiMn2O4 powder or iron phosphate powder or cobalt acid lithium powder or nickle cobalt lithium manganate powder.Said carbon compound powder end includes powdered graphite or carbon dust.Said electrolyte solution includes lithium hexafluoro phosphate (LiPF6) solution or hexafluoroarsenate lithium (LiAsF6) solution or lithium perchlorate (LiClO4) solution or thionyl chloride (SoCL2) solution.
In the present embodiment; Described lithium compound powder is that lithium manganate material constitutes, and described carbon compound is that graphite powder material constitutes, and described electrolyte solution constitutes for lithium hexafluoro phosphate solution; Explain described in the present embodiment the machining manufacture of nano cell
Cell positive material nanometer chemical industry preface: earlier described LiMn2O4 is poured in the specified containers according to preset proportion, full and uniform stirring makes to form uniform cell positive material; Then, cell positive material is put into ball mill, be ground to micron particles; Again micron particles is dissolved in the organic solvent and forms micron particles solution, utilize ultrasonic wave to this micron particles solution-treated setting-up time again after, the high temperature distillation extraction; Be cooled to subzero 20 degree then; Use high-strength focused ion beam-electron beam two-beam to handle the back and form pure particle, again this pure particle is ground to nano particle, i.e. nanometer electrochemical cell positive electrode.Described lithium compound powder also includes iron phosphate powder or cobalt acid lithium powder or nickle cobalt lithium manganate powder;
Cell negative electrode material nanometer chemical industry preface: earlier said powdered graphite is poured in the specified containers according to the ratio of preestablishing, full and uniform stirring makes to form uniform cell negative electrode material; Utilize ball mill grinding to become micron particles this cell negative electrode material again; Again described micron particles is dissolved in the organic solvent and forms micron particles solution, utilize ultrasonic wave to this micron particles solution-treated setting-up time again after, carry out the high temperature distillation extraction; Cool off subzero 20 degree then down; Use high-strength focused ion beam-electron beam two-beam to handle the back and form pure particle, again this pure particle is ground to nano particle, be the nanometer negative material; Said carbon simple substance powder also includes carbon dust.
Electrolyte nanometer chemical industry preface: earlier described lithium hexafluoro phosphate (LiPF6) is dissolved in the organic solvent; Form electrolyte; The carbon nano-fiber that will have conduction again adds in the described electrolyte; Stir, and after using ultrasonic wave that this electrolyte that is added with carbon nano-fiber is handled setting-up time, get final product; Said electrolyte solution also includes hexafluoroarsenate lithium (LiAsF6) solution or lithium perchlorate (LiClO4) solution or thionyl chloride (SoCL2) solution;
The film-making roll process: the two sides of above-mentioned nanometer electrochemical cell positive electrode evenly being coated aluminium foil also flattens, and the two sides of nanometer electrochemical cell negative material evenly being coated Copper Foil also flattens, and gets final product.
Coiling operation: the aluminium foil and the Copper Foil stack that scribbles nanometer electrochemical cell negative material that will scribble nanometer electrochemical cell positive electrode; Middle be combined into polypropylene (PP) and polyethylene (PE) that micro-pore septum separates; Require to be wound into shape not of the same race according to preestablishing then; Draw the both positive and negative polarity of battery with the nickel sheet, and put into metal-back or soft shape bag.
Inject the electrolyte operation: the electrolyte of nanometerization is injected in the battery, and draw both positive and negative polarity, get final product.
Enclosed package: weld two positive and negative electrodes, sealing can manufacture the product nano cell.The use universal meter is measured, and the voltage of described nano cell is 3V, and the internal resistance of cell is 70M Ω, under 20 degree ambient temperatures; Discharge and recharge with 0.5C, its initial capacity reaches 600MAH, discharges and recharges with 1C; Its initial capacity reaches 580MAH, after 100 circulations, and capacity attenuation 0.8%.Infer the cycle life (80% capacity) about 2500 times of battery thus.
Described nano cell is made up of battery positive and negative electrode, electrolyte, membrane for polymer; Cell negative electrode material is that the native graphite by nanometerization constitutes; Cell positive material is the synthesizing lithium ion material by nanometerization; The electrolyte of nano cell is to add that by lithium hexafluoro phosphate (LiPF6) organic solvent is made into, and adopts by the compound multilayer microporous film of polyethylene (PP) and polypropylene (PE) as barrier film, and in electrolyte, adds the carbon nano-fiber that conducts electricity.Again through coating, film-making, roll-in is reeled, cuts, the dress shell, fluid injection, encapsulation detects, and operations such as Bao Biao are processed the finished product battery. and adopt takeup type, process type batteries such as 14500,18650,26650, make the battery of flexible package with superposed type.
Adopt the positive electrode of lithium Li material as battery, be connected with anode by aluminium foil, the centre is the barrier film of polymer; It separates with negative pole anodal; But lithium ion Li+ can through and electronics e-can not pass through, the GND by nano-graphite is formed is connected with the negative pole of battery by Copper Foil.Be the electrolyte of battery between the upper and lower side of battery, battery is by box hat or polybag enclosed package.Collect anodal electric current and draw with aluminium foil, collect cathodal current and draw with Copper Foil.
Nano cell is when charging, and the lithium ion Li+ in the positive pole moves to negative pole through membrane for polymer; In discharge process, the lithium ion Li+ in the negative pole moves to positive pole through barrier film.Utilize the embedding of lithium ion/take off the embedding process, realize the repeated charge of battery.
In sum, technical scheme of the present invention adopts said battery positive electrode material to be formed by the grinding of lithium compound powder; Described GND is ground by carbon compound powder end and forms; Described electrolyte adds that by the inorganic conductive salt electrolyte organic solvent is mixed with; Described membrane for polymer is by polypropylene (PP) and the compound multilayer microporous film of polyethylene (PE) and process film; Form through grinding with ultrasonic wave two procedures and the good carbon nano-fiber processing and manufacturing of adding conductivity; Help improving cell density; Reach and improve battery capacity performance and electric current and charge and discharge the electric energy performance, simultaneously, help improving electric conductivity.Because said cell density has been improved, and makes battery can use higher multiplying power to discharge and recharge, reduces discharging and recharging, thereby reach the useful life that prolongs battery cell damage.Owing to adopt above-mentioned manufacturing processing method, compare each other with processing method of the prior art again, the present invention also has useful technique effect simple to operation and that cost is low.
Claims (5)
1. nano cell, it comprises what battery positive and negative electrode material, electrolyte and membrane for polymer constituted; It is characterized in that: described battery positive electrode material is ground by the lithium compound powder and forms; Described cell negative electrode material is ground by carbon simple substance powder and forms; Described electrolyte adds that by inorganic anion conducting salt electrolyte organic solvent is mixed with; Described membrane for polymer is by polypropylene (PP) and the compound multilayer microporous film of polyethylene (PE) and process film.
2. nano cell according to claim 1 is characterized in that: said lithium compound powder packets contains LiMn2O4 powder or iron phosphate powder or cobalt acid lithium powder or nickle cobalt lithium manganate powder.
3. nano cell according to claim 1 is characterized in that: said carbon simple substance powder packets contains powdered graphite or carbon dust.
4. nano cell according to claim 1 is characterized in that: said electrolyte solution includes lithium hexafluoro phosphate (LiPF6) solution or hexafluoroarsenate lithium (LiAsF6) solution or lithium perchlorate (LiClO4) solution or thionyl chloride (SoCL2) solution.
5. in order to process above-mentioned nano cell, and adopt machining manufacture to be:
Cell positive material nanometer chemical industry preface: earlier described lithium compound powder is poured in the specified containers according to preset proportion, full and uniform stirring makes to form uniform cell positive material; Then, cell positive material is put into ball mill, be ground to micron particles; Again micron particles is dissolved in the organic solvent and forms micron particles solution, utilize ultrasonic wave to this micron particles solution-treated setting-up time again after, the high temperature distillation extraction; Be cooled to subzero 20 degree then; Use high-strength focused ion beam-electron beam two-beam to handle the back and form pure particle, again this pure particle is ground to nano particle, i.e. nanometer electrochemical cell positive electrode; Described lithium compound powder packets contains LiMn2O4 powder or iron phosphate powder or cobalt acid lithium powder or nickle cobalt lithium manganate powder;
Cell negative electrode material nanometer chemical industry preface: earlier said carbon simple substance powder is poured in the specified containers according to the ratio of preestablishing, full and uniform stirring makes to form uniform cell negative electrode material; Utilize ball mill grinding to become micron particles this cell negative electrode material again; Again described micron particles is dissolved in the organic solvent and forms micron particles solution, utilize ultrasonic wave to this micron particles solution-treated setting-up time again after, carry out the high temperature distillation extraction; Cool off subzero 20 degree then down; Use high-strength focused ion beam-electron beam two-beam to handle the back and form pure particle, again this pure particle is ground to nano particle, be the nanometer negative material; Said carbon compound powder packets contains powdered graphite or carbon dust;
Electrolyte nanometer chemical industry preface: earlier with described electrolyte dissolution in organic solvent; Form electrolyte, the carbon nano-fiber that will have conduction again adds in the described electrolyte, stirs; And after using ultrasonic wave that this electrolyte that is added with carbon nano-fiber is handled setting-up time, get final product; Said electrolyte solution includes lithium hexafluoro phosphate (LiPF6) solution or hexafluoroarsenate lithium (LiAsF6) solution or lithium perchlorate (LiClO4) solution or thionyl chloride (SoCL2) solution;
The film-making roll process: the two sides of above-mentioned nanometer electrochemical cell positive electrode evenly being coated aluminium foil also flattens, and the two sides of nanometer electrochemical cell negative material evenly being coated Copper Foil also flattens, and gets final product;
Coiling operation: the aluminium foil and the Copper Foil stack that scribbles nanometer electrochemical cell negative material that will scribble nanometer electrochemical cell positive electrode; Middle be combined into polypropylene (PP) and polyethylene (PE) that micro-pore septum separates; Require to be wound into shape not of the same race according to preestablishing then; Draw the both positive and negative polarity of battery with the nickel sheet, and put into metal-back or soft shape bag;
Inject the electrolyte operation: the electrolyte of nanometerization is injected in the battery, and draw both positive and negative polarity, get final product
Enclosed package: weld two positive and negative electrodes, sealing gets final product.
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| CN201110118935.6A CN102779974B (en) | 2011-05-09 | 2011-05-09 | Nano cell and process this nano cell manufacture method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022483A (en) * | 2012-12-07 | 2013-04-03 | 南京工业大学 | Preparation method for positive electrode material of power lithium ion battery |
| CN110707964A (en) * | 2019-10-10 | 2020-01-17 | 内蒙古工业大学 | Electric furnace steelmaking noise power generation device adopting piezoelectric method |
| CN111668480A (en) * | 2020-06-22 | 2020-09-15 | 贝特瑞新材料集团股份有限公司 | Graphite negative electrode material, preparation method thereof and lithium ion battery |
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| CN101229917A (en) * | 2007-11-16 | 2008-07-30 | 中南民族大学 | Method for synthesizing lithium ion-cell anode material LiFePO4 |
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2011
- 2011-05-09 CN CN201110118935.6A patent/CN102779974B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1339835A (en) * | 2000-08-22 | 2002-03-13 | 潘树明 | Synthesis process of positive electrode for high performance lithium iron secondary cell |
| CN1357933A (en) * | 2000-12-08 | 2002-07-10 | 兰州大学化学化工学院 | Prepn of LiCoC2 as nanometer positive electrode material for lithium ion cell |
| CN1747218A (en) * | 2004-09-03 | 2006-03-15 | 香港科技大学 | The lithium ion battery of incorporating carbon nanostructure materials |
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| CN103022483A (en) * | 2012-12-07 | 2013-04-03 | 南京工业大学 | Preparation method for positive electrode material of power lithium ion battery |
| CN110707964A (en) * | 2019-10-10 | 2020-01-17 | 内蒙古工业大学 | Electric furnace steelmaking noise power generation device adopting piezoelectric method |
| CN111668480A (en) * | 2020-06-22 | 2020-09-15 | 贝特瑞新材料集团股份有限公司 | Graphite negative electrode material, preparation method thereof and lithium ion battery |
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