CN101494287A - Anode material for lithium ion battery and preparation method thereof - Google Patents
Anode material for lithium ion battery and preparation method thereof Download PDFInfo
- Publication number
- CN101494287A CN101494287A CNA2009100470735A CN200910047073A CN101494287A CN 101494287 A CN101494287 A CN 101494287A CN A2009100470735 A CNA2009100470735 A CN A2009100470735A CN 200910047073 A CN200910047073 A CN 200910047073A CN 101494287 A CN101494287 A CN 101494287A
- Authority
- CN
- China
- Prior art keywords
- silicon dioxide
- lithium
- preparation
- substrate
- ion battery
- 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.)
- Pending
Links
Images
Classifications
-
- 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 electrochemical technique field, in relates particular to a cathode material of a lithium ion battery and a preparation method thereof. The cathode material is a composite nanophase material of a lithium cobalt oxide (Li0.73CoO2) and a silicon dioxide (SiO2), is in a form of a membrane and is prepared through a reactive pulse laser precipitation method. The electrode prepared by the membrane has good charge-discharge cycle reversibility; the reversible specific capacity of the electrode prepared by the composite membrane of the lithium cobalt oxide (Li0.73CoO2) and the silicon dioxide (SiO2) is about 60mAh per gram; after 100 times of cycle, the electrode still has capacity of 50mAh per gram. The composite electrode material of the lithium cobalt oxide (Li0.73CoO2) and the silicon dioxide (SiO2) has the advantages of good chemical stability, high plateau potential and simple preparation method, and is suitable for the lithium ion battery.
Description
Technical field
The invention belongs to technical field of electrochemistry, be specifically related to a kind of positive electrode that is used for lithium ion battery and preparation method thereof.
Background technology
Lithium ion battery is the vital power supply of notebook computer, camera, mobile phone and other Communication Equipment, and might be used for automobile and other vehicles as green energy resource.At present commercially available lithium ion battery is mainly by the carbon back positive electrode, and liquid organic electrolyte is formed with the transition metal oxide cathode material that contains lithium.In order further to improve the performance of lithium ion battery, people study, seek than the better novel positive electrode of carbon back positive electrode performance.In addition, along with the miniaturization of microelectronic component, the lithium ion battery that an urgent demand exploitation is complementary therewith, for example film lithium ion battery etc.
Summary of the invention
The objective of the invention is to propose well behaved anode material for lithium-ion batteries of a class and preparation method thereof.
The anode material for lithium-ion batteries that the present invention proposes is a kind of by the cobalt acid lithium (Li with hexagonal structure
0.73CoO
2) and silicon dioxide (SiO with orthohormbic structure
2) nano composite film formed.Show that after deliberation this type of material has good electrochemical, can be used as the positive electrode of high performance lithium ion battery.So far not about cobalt acid lithium and silicon dioxide composite film material application report as anode material for lithium-ion batteries.
The present invention propose as lithium ion cell anode material lithium cobaltate (Li
0.73CoO
2) and silicon dioxide (SiO
2) thickness of composite film material is 0.2-1 μ m.
The invention allows for the preparation method of aforementioned anode material for lithium-ion batteries, specific as follows:
Cobalt acid lithium (Li as anode material for lithium-ion batteries
0.73CoO
2) and silicon dioxide (SiO
2) laminated film can adopt the preparation of reactive pulsed laser deposition, concrete steps are: with lithium carbonate, cobalt oxalate and silicon dioxide grind, mix, compressing tablet is made the used target of pulsed laser deposition after the high-temperature calcination, wherein the molar ratio of lithium carbonate and cobalt oxalate is at 1.1-1.3, the molar ratio of cobalt oxalate and silicon dioxide is about 1.1-1.5, the 1064nm fundamental frequency that is produced by neodymium-doped yttrium pyralspite laser obtains the 355nm pulse laser behind frequency tripling, laser beam is through inciding after the lens focus on the above-mentioned target, the distance of target and substrate is 20-50mm, deposition obtains cobalt acid lithium and silicon dioxide laminated film on substrate in argon gas atmosphere, substrate can adopt stainless steel substrates, platinized platinum or gold-plated monocrystalline silicon piece, substrate temperature are 400-700 ℃.The depositing of thin film time is required to determine by film thickness, was generally 0.2-1.0 hour.Film thickness can be measured by ESEM, and the weight of film is made difference according to substrate weight before and after the electronic balance weighing experiment and obtained.
Among the present invention, cobalt acid lithium (Li
0.73CoO
2) and silicon dioxide (SiO
2) crystal structure of laminated film determined by x-ray diffractometer (Bruker D8 Advance).X-ray diffracting spectrum shows the cobalt acid lithium (Li that is made by pulse laser reactive deposition method
0.73CoO
2) film is the hexagonal structure structure, silicon dioxide (SiO
2) be orthohormbic structure.Measure by ESEM (PhilipsXL30) and to show, the laminated film smooth surface that makes by pulse laser reactive deposition method and with some tiny slight cracks.
Among the present invention, cobalt acid lithium (Li
0.73CoO
2) and silicon dioxide (SiO
2) laminated film can directly make the lithium ion cell film electrode.
Among the present invention, cobalt acid lithium (Li
0.73CoO
2) and silicon dioxide (SiO
2) electrochemical property test of composite film electrode adopts the battery system of being made up of three electrodes, wherein, the sour lithium (Li of cobalt
0.73CoO
2) and silicon dioxide (SiO
2) laminated film is as work electrode, the high purity lithium sheet is used separately as to electrode and reference electrode.Electrolyte is 1M LiPF
6+ EC+DMC (V/V=1/1).Battery is assemblied in the drying box of applying argon gas and carries out.The experiment that discharges and recharges of battery is carried out on blue electricity (Land) battery test system.
Among the present invention, the cobalt acid lithium (Li that on substrates such as stainless steel substrates, makes by the pulse laser reactive deposition processes
0.73CoO
2) and silicon dioxide (SiO
2) composite film electrode all has charge-discharge performance, the discharge platform of exoelectrical reaction for the first time appears at 3.9V (with respect to Li
+/ Li), for the second time discharge process with the first time discharge process compare, irreversible discharge capacity loss is about 8.4%, at voltage range 3.0-4.3V and current density 5 μ A/cm
2The time, the specific capacity of cobalt acid lithium and silicon dioxide composite film electrode remains on 50-62mAh/g in preceding 100 circulations.
Above-mentioned performance shows, cobalt acid lithium (Li
0.73CoO
2) and silicon dioxide (SiO
2) laminated film is the novel positive electrode of a class, can be applicable to lithium ion battery.
Description of drawings
Fig. 1 is the XRD spectra of cobalt acid lithium and silicon dioxide laminated film.Wherein the diffraction maximum of stainless steel substrate represented in asterisk among the figure, the plus sige mark be the crystal face diffraction of cobalt acid lithium, the pound sign mark be the crystal face diffraction of silicon dioxide.
Embodiment
Embodiment:
Adopt the cobalt acid lithium (Li of reactive pulsed laser deposition preparation
0.73CoO
2) and silicon dioxide (SiO
2) the laminated film color is grey.During preparation, with lithium carbonate, cobalt oxalate and silicon dioxide grind, and mix, compressing tablet is made the used target of pulsed laser deposition after the high-temperature calcination, wherein the molar ratio of lithium carbonate and cobalt oxalate is at 1.1-1.3, and the molar ratio of cobalt oxalate and silicon dioxide is about 1.1-1.5, adopts stainless steel substrates as substrate, the distance of substrate and target is 40mm, substrate temperature is 450 ℃, and the fundamental frequency that is produced by the Nd:YAG laser produces the 355nm pulse laser through frequency tripling, and laser beam is through inciding on the hybrid target after the lens focus.Energy density is 2Jcm
-2, sedimentation time is 2 hours.
X-ray diffraction mensuration shows that the film of deposition is by the cobalt acid lithium (Li with hexagonal structure
0.73CoO
2) and the silicon dioxide (SiO of orthohormbic structure
2) formation (accompanying drawing 1).Measure by stereoscan photograph and to show the cobalt acid lithium that makes by the pulse laser reactive deposition and silicon dioxide laminated film smooth surface and with some tiny slight cracks.
To the acid of the cobalt on stainless steel substrate lithium (Li
0.73CoO
2) and silicon dioxide (SiO
2) the electrochemical property test result of composite film electrode is as follows:
Cobalt acid lithium (Li
0.73CoO
2) and silicon dioxide (SiO
2) composite film electrode can be at 5 μ A/cm
2Carry out charge and discharge cycles under the charge-discharge velocity.In voltage range 3.0-4.3V, for the first time discharge capacity can reach 62mAh/g, and reversible capacity is 60mAh/g, circulates that capacity tends towards stability after 40 times, and 100 capacity that circulate remain on 50mAh/g.
Therefore, the cobalt acid lithium (Li that on stainless steel substrates, deposits
0.73CoO
2) and silicon dioxide (SiO
2) laminated film can be used as the positive electrode of lithium ion battery.
Claims (2)
1. an anode material for lithium-ion batteries is characterized in that this positive electrode is by the Li with hexagonal structure
0.73CoO
2With SiO with orthohormbic structure
2The nano compound film that constitutes, the thickness of film is 0.2-1 μ m.
2. the preparation method of an anode material for lithium-ion batteries as claimed in claim 1, it is characterized in that adopting reactive pulsed laser deposition preparation, concrete steps are: with lithium carbonate, cobalt oxalate and silicon dioxide grind, mix, compressing tablet is made the used target of pulsed laser deposition after the high-temperature calcination, wherein the molar ratio of lithium carbonate and cobalt oxalate is at 1.1-1.3, the molar ratio of cobalt oxalate and silicon dioxide is about 1.1-1.5, the 1064nm fundamental frequency that is produced by neodymium-doped yttrium pyralspite laser obtains the 355nm pulse laser behind frequency tripling, laser beam is through inciding after the lens focus on the above-mentioned target, the distance of target and substrate is 20-50mm, deposition obtains cobalt acid lithium and silicon dioxide laminated film on substrate in argon gas atmosphere, and control laminated film thickness is 0.2-1 μ m; Substrate adopts stainless steel substrates, platinized platinum or gold-plated monocrystalline silicon piece, and substrate temperature is 400-700 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100470735A CN101494287A (en) | 2009-03-05 | 2009-03-05 | Anode material for lithium ion battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100470735A CN101494287A (en) | 2009-03-05 | 2009-03-05 | Anode material for lithium ion battery and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101494287A true CN101494287A (en) | 2009-07-29 |
Family
ID=40924768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100470735A Pending CN101494287A (en) | 2009-03-05 | 2009-03-05 | Anode material for lithium ion battery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101494287A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185134A (en) * | 2011-04-15 | 2011-09-14 | 福建师范大学 | Method for preparing lithium cobalt oxide anode of silicon-based film lithium ion battery by using high temperature immobile phase-surface deposition method |
| CN102646518A (en) * | 2012-05-08 | 2012-08-22 | 同济大学 | Method for fabricating graphene electrode materials through pulsed laser deposition and application thereof |
-
2009
- 2009-03-05 CN CNA2009100470735A patent/CN101494287A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185134A (en) * | 2011-04-15 | 2011-09-14 | 福建师范大学 | Method for preparing lithium cobalt oxide anode of silicon-based film lithium ion battery by using high temperature immobile phase-surface deposition method |
| CN102646518A (en) * | 2012-05-08 | 2012-08-22 | 同济大学 | Method for fabricating graphene electrode materials through pulsed laser deposition and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100428536C (en) | Sb2Se3 anode film material for lithium ion cell and its preparing method | |
| CN109473657A (en) | A kind of nickel cobalt aluminium manganese quaternary lithium-ion battery positive electrode material being mixed with, Preparation method and use | |
| CN106532041B (en) | A kind of manganese fluosilicate sodium positive electrode and preparation method thereof for sodium-ion battery | |
| CN101540400A (en) | Lithic natrium doping type lithium iron phosphate cathode material for lithium-ion battery and preparation method thereof | |
| CN102931404B (en) | Phosphate potential boron doping phosphoric acid manganese lithium/carbon composite material and preparation method thereof | |
| CN101794877A (en) | Copper fluoride-selenium nanometer composite cathode material for lithium ion battery and preparation method thereof | |
| CN100395908C (en) | Negative pole material for lithium battery and producing method thereof | |
| CN101237040B (en) | A Se indium copper anode material for lithium ion battery and its making method | |
| CN101499529B (en) | Indium phosphide cathode material for lithium ion battery and method for producing the same | |
| CN101252186B (en) | Chromium phosphide cathode material for lithium ion battery and manufacturing method thereof | |
| CN101834290A (en) | Tungsten trioxide cathode material for lithium ion battery and preparation method thereof | |
| CN1189962C (en) | Nano anode material for Li-ion battery and its preparing process | |
| CN100423330C (en) | Ferrous selenide cathode material for lithium cell and preparing process thereof | |
| KR20170092264A (en) | All solid lithium secondary batteries including conducting polymer and manufacturing method for the same | |
| CN100391035C (en) | Thin film lithium battery using diselenid nickel thin film as cathode material and its preparation method | |
| CN101882677B (en) | Lithium selenide-antimony selenide cathode material for lithium ion battery and preparation method | |
| CN100505389C (en) | Cobalt-lithium silicate positive electrode material for lithium ion cell and its preparing method | |
| CN101494287A (en) | Anode material for lithium ion battery and preparation method thereof | |
| CN101289176B (en) | Sn4P3 cathode material for lithium ion battery and method for preparing same | |
| CN101882678B (en) | Lithium selenide-copper selenide cathode material for lithium ion battery and preparation method | |
| CN102136565A (en) | Iron oxide-selenium nano composite cathode material for lithium ion battery and preparation method thereof | |
| CN100367562C (en) | Thin film lithium ion cell using silver selenide film as anode material and its preparing method | |
| CN100384000C (en) | Film lithium ion cell with zinc selenide film as anode and method for preparing same | |
| CN101304089B (en) | Phosphorizing nickel cathode material for lithium ion battery and preparation method thereof | |
| CN101800314A (en) | InSe nanometer composite anode material for lithium ion battery and preparation method 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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090729 |