CN108640118A - A kind of preparation method of high-purity porous silicon - Google Patents
A kind of preparation method of high-purity porous silicon Download PDFInfo
- Publication number
- CN108640118A CN108640118A CN201810378721.4A CN201810378721A CN108640118A CN 108640118 A CN108640118 A CN 108640118A CN 201810378721 A CN201810378721 A CN 201810378721A CN 108640118 A CN108640118 A CN 108640118A
- Authority
- CN
- China
- Prior art keywords
- acid
- silicon
- lithium
- porous silicon
- preparation
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
- C01B33/037—Purification
-
- 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
-
- 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
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/386—Silicon or alloys based on silicon
-
- 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 present invention relates to a kind of preparation methods of high-purity porous silicon, belong to the preparation field of lithium cell cathode material.The method includes silicon alloy to be put into inorganic acid solution, complexing agent is added after bubble-free generation, stirring, washing, filtering, it is dry to get.The complexing agent includes 10 Phens, and EDTA, dimercaprol dimercaptopropanol, Sodium Dimercapto Sulfonate, mercaptoethylmaine, thioacetic acid, thiocarbamide, ammonium fluoride, 8 oxyquinolines, potassium chromate, vulcanized sodium, copper reagent, cyanide, acetylacetone,2,4-pentanedione, sulfosalicylic acid, triethanolamine, EGTA, ethylenediamine tetrapropionic acid, triethylenetetramine are medium.The present invention inhibits the hydrolysis of non-silicon components in silicon alloy using complexing agent, to obtain the porous silicon of high-purity.Compared with prior art, the high-purity porous silicon electric conductivity that prepared by the present invention, cyclical stability is more preferable, effectively improves the safety of battery.
Description
Technical field
The present invention relates to the preparation field of lithium cell cathode material, a kind of preparation method of high-purity porous silicon.
Background technology
Lithium battery is due to its high ratio energy, self discharge is small, environmentally protective, the advantages that having extended cycle life, and has been used as electricity
Electrical automobile and the most promising power supply system of battery product.The common cathode of lithium battery is mainly graphite type material at present, reason
There was only 372mAh/g by capacity, this severely limits the entirety of the performance of lithium battery to improve, so it is high to develop novel ratio energy
Negative material it is particularly important.
Metallic silicon and lithium can form silicon lithium alloy (Li4.4Si), theoretical specific capacity has reached 4212mAh/g, and silicon
Rich reserves, derive from a wealth of sources, be a kind of ideal lithium cell cathode material.But silicon as negative material there are also lack
Point：(1) expensive, it prepares difficult.The silicon of usual nanometer is typically the device therefor made from high-energy ball milling method or CVD method
Costliness, low yield are of high cost.(2) metallic silicon volume expansion during storing up lithium leads to electricity to cause pole piece powder of detached
Pond performance degradation.(3) silicon is a kind of semi-conducting material, and electric conductivity is poor, limits its high rate performance.
The most common method that solves the above problems is that silicon porous is formed porous silicon；But to prepare the more of high-purity
Hole silicon is particularly not easy.The common method chemistry for preparing porous silicon now takes off alloyage, and the one or more of silicon alloy are gone with pickling
Component is to obtain porous silicon, but non-silicon components (such as aluminium, magnesium, calcium, iron) of this method in preparation process are easy water
Solution, therefore what is obtained is not pure silicon.
In conclusion the existing method for preparing porous silicon still has the problems such as product purity is inadequate, therefore, it is necessary to
Studying a kind of can overcome the porous silicon preparation method of the high-purity of the above problem.
Invention content
For the above-mentioned prior art the problem of, the present invention is intended to provide a kind of preparation method of porous silicon, this hair
The bright hydrolysis for inhibiting non-silicon components in silicon alloy using complexing agent, to obtain the porous silicon of high-purity.With prior art phase
Than high-purity porous silicon electric conductivity prepared by the present invention, cyclical stability is more preferable, effectively improves the safety of battery.
An object of the present invention is to provide a kind of preparation method of porous silicon.
The second object of the present invention is to provide a kind of lithium battery.
The third object of the present invention is to provide the preparation method of porous silicon and the application of lithium battery.
For achieving the above object, the invention discloses following technical proposals：
First, the invention discloses a kind of preparation methods of porous silicon, including：Silicon alloy is put into inorganic acid solution,
Complexing agent, stirring, washing, filtering, drying, you can obtain high-purity porous silicon are added after bubble-free generation.
In the above method, the reaction temperature is 0-100 DEG C, reaction time 1-48h.
In the above method, the silicon alloy includes silico-calcium, sial, ferrosilicon, silicon magnesium, silicon lithium, aluminium zinc silicon, al-mg-si, sial
The mixture of one or more of iron.
In the above method, the inorganic acid include hydrochloric acid, sulfuric acid, acetic acid, oxalic acid, phosphoric acid, nitric acid, citric acid, tartaric acid,
The mixture of one or more of boric acid or carbonic acid.
Preferably, the concentration of the inorganic acid is 1-10mol/L.
Preferably, the addition of the complexing agent is the 1-50% of silicon alloy quality.
In the above method, the complexing agent includes 10- Phens, EDTA, dimercaprol dimercaptopropanol, dimercaptopropane
Sodium, mercaptoethylmaine, thioacetic acid, thiocarbamide, ammonium fluoride, 8-hydroxyquinoline, potassium chromate, vulcanized sodium, copper reagent, cyanide, acetyl
The mixing of one or more of acetone, sulfosalicylic acid, triethanolamine, EGTA, ethylenediamine tetrapropionic acid, triethylenetetramine
Object.
In the above method, the drying is vacuum drying, and drying temperature is 60-150 DEG C.
Secondly, the invention discloses a kind of lithium batteries, including electrolyte, anode, cathode, are characterized in that：The lithium battery
Cathode be the high-purity porous silicon for preparing of the present invention.
Preferably, the electrolyte includes：Ethylene carbonate, dimethyl carbonate, ethylene carbonate, diethyl carbonate, connection
Benzene (BP), vinylene carbonate (VC), vinylethylene carbonate (VEC), fluorinated ethylene carbonate (FEC), 1, in 3-N-morpholinopropanesulfonic acid
Ester (PS), 1,4- butyl sultones (BS), 1,3- (1- propylene) sultone (PST), ethylene sulfite (ESI), sulfuric acid ethylene
In ester (ESA), cyclohexyl benzene (CHB), tert-butyl benzene (TBB), tert-amyl benzene (TPB) and fourth dicyan (SN) it is arbitrary one or several
With the mixed liquor of lithium salts composition.
Preferably, the lithium salts includes：LiBF4 (LiBF4), lithium hexafluoro phosphate (LiPF6), double trifluoro sulfonamide lithiums
(LiN(SO2CF3)2), double fluorine sulfonamide lithiums (LiFSI), biethyl diacid lithium borate (LiBOB), trifluoromethanesulfonic acid lithium
(LiSO3CF3)。
Preferably, the anode includes cobalt acid lithium, LiMn2O4, LiFePO4, lithium-nickel-cobalt-oxygen, lithium nickel cobalt manganese oxygen etc..
Finally, the invention discloses the preparation methods of porous silicon and lithium battery in electric vehicle, electric vehicle, energy storage material
Application.
Compared with prior art, the preparation method of porous silicon provided by the invention achieves following advantageous effect：
(1) present invention inhibits the hydrolysis of non-silicon components in silicon alloy using complexing agent, to obtain the porous of high-purity
Silicon, the porous silicon for making the present invention prepare, cyclical stability is more preferable, effectively improves the safety of battery.
(2) preparation process of the present invention is simple, at low cost, greatly improves production efficiency height, can preferably meet industry
The needs of metaplasia production, realize large-scale production, great application prospect.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is the XRD diagram of 1 silico-aluminum of the embodiment of the present invention.
Fig. 2 is the XRD diagram of high-purity porous silicon prepared by the embodiment of the present invention 1.
Fig. 3 is the SEM figures (2000 times) of high-purity porous silicon prepared by the embodiment of the present invention 1.
Fig. 4 is the SEM figures (11000 times) of high-purity porous silicon prepared by the embodiment of the present invention 1.
Fig. 5 is the SEM figures (50000 times) of high-purity porous silicon prepared by the embodiment of the present invention 1.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, the existing method for preparing porous silicon still has product purity and not enough etc. asks
Topic；To solve the above-mentioned problems, the present invention provides a kind of preparation methods of porous silicon, implement below in conjunction with the accompanying drawings and specifically
The present invention is described further for example.
Embodiment 1
It weighs 5g silico-aluminums to be added in 100mL1mol/L hydrochloric acid solutions, at 25 DEG C, for 24 hours, bubble-free to be reacted is given birth to for reaction
At then addition 1g EDTA, stir 2h, washing, filtering, 80 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
Fig. 1 is the XRD diagram of 1 silico-aluminum of the embodiment of the present invention；Fig. 2 is the XRD diagram of porous silicon manufactured in the present embodiment, from
As can be seen that 2 θ are the characteristic diffraction peak of crystalline silicon occur at 28.5,47.4,56.2,69.3,76.5 and 88.2 in Fig. 2, and
The appearance of other impurities crystal diffraction peak is had no, illustrates that porous silicon powder obtained has good crystal structure.Fig. 3,4,5 are not
SEM with high-purity porous silicon under amplification factor schemes, it can be seen from the figure that high-purity porous silicon pore-size distribution prepared by the present invention
Uniformly.
Embodiment 2
It weighs 5g silico-aluminums to be added in 100mL10mol/L hydrochloric acid solutions, 1h, bubble-free life to be reacted is reacted at 100 DEG C
At then addition 0.2g EDTA, stir 1h, washing, filtering, 80 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
Embodiment 3
It weighs 5g Si-Mg alloys to be added in 100mL1mol/L sulfuric acid solutions, 48h, bubble-free life to be reacted is reacted at 0 DEG C
At then addition 0.2g EGTA, stir 2h, washing, filtering, 60 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
Embodiment 4
It weighs 5g Antacirons to be added in 100mL5mol/L salpeter solutions, 20h, bubble-free life to be reacted is reacted at 10 DEG C
At then addition 1g 10- Phens, stir 1h, washing, filtering, 100 DEG C of vacuum dryings, you can it is porous to obtain high-purity
Silicon.
Embodiment 5
It weighs 5g calcium-silicon to be added in 100mL 1mol/L oxalic acid solutions, 40h, bubble-free life to be reacted is reacted at 50 DEG C
At then addition 0.2g mercaptoethylmaines, stir 2h, washing, filtering, 80 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
Embodiment 6
It weighs 5g Alsimins to be added in 100mL 8mol/L citric acid solutions, 1h is reacted at 80 DEG C, wait for reaction without gas
Bubble generates, and 0.2g thiocarbamides are then added, and stirs 1h, washing, filtering, 150 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
Embodiment 7
It weighs 5g silicon lithium alloys to be added in 100mL 6mol/L boric acid solutions, 10h, bubble-free life to be reacted is reacted at 90 DEG C
At then addition 0.2g dimercaprol dimercaptopropanol, stirs 1h, washing, filtering, 120 DEG C of vacuum dryings, you can it is porous to obtain high-purity
Silicon.
Embodiment 8
It weighs 5g silico-aluminums to be added in 100mL 2mol/L acetums, 10h, bubble-free life to be reacted is reacted at 60 DEG C
At then addition 2g ammonium fluorides, stir 1h, washing, filtering, 80 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
Embodiment 9
It weighs 5g aluminium zinc silicon alloys to be added in 100mL 4mol/L phosphoric acid solutions, 10h, bubble-free to be reacted is reacted at 80 DEG C
It generates, 0.5g potassium chromates is then added, stir 1h, washing, filtering, 110 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
Embodiment 10
It weighs 5g aldrays to be added in 100mL 4mol/L tartaric acid solutions, 10h is reacted at 80 DEG C, wait for reaction without gas
Bubble generates, and 1.5g potassium chromates are then added, and stirs 1h, washing, filtering, 110 DEG C of vacuum dryings, you can it is porous to obtain high-purity
Silicon.
Embodiment 11
It weighs 5g aldrays to be added in 100mL 2mol/L salpeter solutions, 10h, bubble-free to be reacted is reacted at 80 DEG C
It generates, 0.5g vulcanized sodium is then added, stir 1h, washing, filtering, 140 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
Embodiment 12
It weighs 5g aldrays to be added in 100mL 8mol/L carbon acid solutions, 10h, bubble-free to be reacted is reacted at 80 DEG C
It generates, 0.8g triethylenetetramines is then added, stir 1h, washing, filtering, 140 DEG C of vacuum dryings, you can it is porous to obtain high-purity
Silicon.
Embodiment 13
It weighs 5g aldrays to be added in 100mL 8mol/L carbon acid solutions, 10h, bubble-free to be reacted is reacted at 80 DEG C
It generates, 1.0g copper reagent is then added, stir 1h, washing, filtering, 140 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
Embodiment 14
It weighs 5g Alsimins to be added in 100mL 8mol/L citric acid solutions, 1h is reacted at 80 DEG C, wait for reaction without gas
Bubble generates, and 0.2g sulfosalicylic acids are then added, and stirs 1h, washing, filtering, 150 DEG C of vacuum dryings, you can it is more to obtain high-purity
Hole silicon.
Embodiment 15
It weighs 5g silico-aluminums to be added in 100mL 1mol/L hydrochloric acid solutions, at 25 DEG C, for 24 hours, bubble-free to be reacted is given birth to for reaction
At then addition 1g ethylenediamine tetrapropionic acids, stir 2h, washing, filtering, 80 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
Embodiment 16
It weighs 5g aluminium zinc silicon alloys to be added in 100mL 4mol/L phosphoric acid solutions, 10h, bubble-free to be reacted is reacted at 80 DEG C
It generates, 0.5g acetylacetone,2,4-pentanediones is then added, stir 1h, washing, filtering, 110 DEG C of vacuum dryings, you can it is porous to obtain high-purity
Silicon.
Embodiment 17
It weighs 5g Si-Mg alloys to be added in 100mL 1mol/L sulfuric acid solutions, 48h, bubble-free life to be reacted is reacted at 0 DEG C
At then addition 0.2g 8-hydroxyquinolines, stir 2h, washing, filtering, 60 DEG C of vacuum dryings, you can it is porous to obtain high-purity
Silicon.
Embodiment 18
It weighs 5g Antacirons to be added in 100mL 5mol/L salpeter solutions, 20h, bubble-free life to be reacted is reacted at 10 DEG C
At then addition 1g triethanolamines, stir 1h, washing, filtering, 100 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
Embodiment 19
It weighs 5g calcium-silicon to be added in 100mL 1mol/L oxalic acid solutions, 40h, bubble-free life to be reacted is reacted at 50 DEG C
At then addition 0.2g Sodium Dimercapto Sulfonates, stir 2h, washing, filtering, 80 DEG C of vacuum dryings, you can obtain high-purity
Porous silicon.
Embodiment 20
It weighs 5g silicon lithium alloys to be added in 100mL 6mol/L boric acid solutions, 10h, bubble-free life to be reacted is reacted at 90 DEG C
At then addition 0.2g thioacetic acid, stirs 1h, washing, filtering, 120 DEG C of vacuum dryings, you can obtain high-purity porous silicon.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for those skilled in the art
For member, the application can have various modifications and variations.Any modification made by within the spirit and principles of this application,
Equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of preparation method of porous silicon, it is characterised in that：The method includes：Silicon alloy is put into inorganic acid solution,
Complexing agent, stirring, washing, filtering, drying, you can obtain porous silicon are added after bubble-free generation；
The complexing agent includes 10- Phens, EDTA, dimercaprol dimercaptopropanol, Sodium Dimercapto Sulfonate, mercaptoethylmaine, sulfydryl
Acetic acid, thiocarbamide, ammonium fluoride, 8-hydroxyquinoline, potassium chromate, vulcanized sodium, copper reagent, cyanide, acetylacetone,2,4-pentanedione, sulfosalicylic acid,
The mixture of one or more of triethanolamine, EGTA, ethylenediamine tetrapropionic acid, triethylenetetramine.
2. preparation method as described in claim 1, it is characterised in that：The silicon alloy include silico-calcium, sial, ferrosilicon, silicon magnesium,
The mixture of one or more of silicon lithium, aluminium zinc silicon, al-mg-si, ferro-silico aluminium.
3. preparation method as described in claim 1, it is characterised in that：The inorganic acid include hydrochloric acid, sulfuric acid, acetic acid, oxalic acid,
The mixture of one or more of phosphoric acid, nitric acid, citric acid, tartaric acid, boric acid or carbonic acid；Preferably, described inorganic
The concentration of acid is 1-10mol/L.
4. preparation method as described in claim 1, it is characterised in that：The addition of the complexing agent is the 1- of silicon alloy quality
50%.
5. preparation method as described in claim 1, it is characterised in that：The reaction temperature is 0-100 DEG C, reaction time 1-
48h；Preferably, the drying is vacuum drying, and drying temperature is 60-150 DEG C.
6. a kind of lithium battery, including electrolyte, anode, are characterized in that：The lithium battery further includes as claim 1-6 is any
Porous silicon prepared by the method described in.
7. the lithium battery as described in right 6, is characterized in that：The electrolyte includes：Ethylene carbonate, dimethyl carbonate, carbonic acid
Vinyl acetate, diethyl carbonate, biphenyl, vinylene carbonate, vinylethylene carbonate, fluorinated ethylene carbonate 1, in 3-N-morpholinopropanesulfonic acid
Ester, 1,4- butyl sultones, 1,3- (1- propylene) sultone (PST), ethylene sulfite, sulfuric acid vinyl ester, cyclohexyl benzene, uncle
The mixed liquor of arbitrary one or several and lithium salts composition in butyl benzene, tert-amyl benzene and fourth dicyan.
8. the lithium battery as described in right 6, is characterized in that：The lithium salts includes：LiBF4, lithium hexafluoro phosphate, double trifluoros
Sulfonamide lithium, double fluorine sulfonamide lithiums, biethyl diacid lithium borate, trifluoromethanesulfonic acid lithium.
9. the lithium battery as described in right 6, is characterized in that：The anode includes cobalt acid lithium, LiMn2O4, LiFePO4, lithium nickel cobalt
Oxygen, lithium nickel cobalt manganese oxygen.
10. the preparation method of porous silicon as described in any one in claim 1-5 and/or as described in claim any one of 6-9
Application of the lithium battery in electric vehicle, electric vehicle, energy storage material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810378721.4A CN108640118A (en) | 2018-04-25 | 2018-04-25 | A kind of preparation method of high-purity porous silicon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810378721.4A CN108640118A (en) | 2018-04-25 | 2018-04-25 | A kind of preparation method of high-purity porous silicon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108640118A true CN108640118A (en) | 2018-10-12 |
Family
ID=63747552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810378721.4A Pending CN108640118A (en) | 2018-04-25 | 2018-04-25 | A kind of preparation method of high-purity porous silicon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108640118A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111204767A (en) * | 2020-03-13 | 2020-05-29 | 山东大学 | Preparation method and application of two-dimensional silicon |
| WO2021012954A1 (en) * | 2019-07-23 | 2021-01-28 | 山东大学 | Method for preparing silicon or germanium nanomaterials by decomposing ternary alloy, silicon or germanium nanomaterials and application |
| CN113293365A (en) * | 2021-03-31 | 2021-08-24 | 无锡伊佩克科技有限公司 | Chromium-free passivator with high corrosion resistance for batch hot galvanizing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165874A (en) * | 2013-04-10 | 2013-06-19 | 上海空间电源研究所 | Porous silicon negative material of lithium ion battery and preparation method and application of material |
| CN104617276A (en) * | 2015-02-10 | 2015-05-13 | 南开大学 | Lithium ion secondary battery porous silicon/carbon composite negative electrode material and preparation method thereof |
| CN104638240A (en) * | 2015-02-06 | 2015-05-20 | 湖州创亚动力电池材料有限公司 | Method for preparing lithium ion battery silicon carbon composite anode material and product prepared by method |
| CN105024055A (en) * | 2014-04-15 | 2015-11-04 | 中国科学院宁波材料技术与工程研究所 | Lithium-ion battery porous nanometer silicon-carbon composite negative electrode material and preparation method thereof |
| CN107742715A (en) * | 2017-10-25 | 2018-02-27 | 山东大学 | A kind of preparation method of lithium cell cathode material nano-structure porous silicon |
-
2018
- 2018-04-25 CN CN201810378721.4A patent/CN108640118A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165874A (en) * | 2013-04-10 | 2013-06-19 | 上海空间电源研究所 | Porous silicon negative material of lithium ion battery and preparation method and application of material |
| CN105024055A (en) * | 2014-04-15 | 2015-11-04 | 中国科学院宁波材料技术与工程研究所 | Lithium-ion battery porous nanometer silicon-carbon composite negative electrode material and preparation method thereof |
| CN104638240A (en) * | 2015-02-06 | 2015-05-20 | 湖州创亚动力电池材料有限公司 | Method for preparing lithium ion battery silicon carbon composite anode material and product prepared by method |
| CN104617276A (en) * | 2015-02-10 | 2015-05-13 | 南开大学 | Lithium ion secondary battery porous silicon/carbon composite negative electrode material and preparation method thereof |
| CN107742715A (en) * | 2017-10-25 | 2018-02-27 | 山东大学 | A kind of preparation method of lithium cell cathode material nano-structure porous silicon |
Non-Patent Citations (1)
| Title |
|---|
| 姜晓霞等: "《合金相电化学》", 30 November 1984, 上海科学技术出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021012954A1 (en) * | 2019-07-23 | 2021-01-28 | 山东大学 | Method for preparing silicon or germanium nanomaterials by decomposing ternary alloy, silicon or germanium nanomaterials and application |
| CN111204767A (en) * | 2020-03-13 | 2020-05-29 | 山东大学 | Preparation method and application of two-dimensional silicon |
| CN113293365A (en) * | 2021-03-31 | 2021-08-24 | 无锡伊佩克科技有限公司 | Chromium-free passivator with high corrosion resistance for batch hot galvanizing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106848404B (en) | A kind of lithium-ion battery electrolytes functional additive, lithium-ion battery electrolytes and lithium ion battery | |
| CN109119685A (en) | Electrolyte and lithium ion battery | |
| CN108767310A (en) | A kind of lithium-ion battery electrolytes, lithium ion battery | |
| CN108682812A (en) | A kind of combination electrode material and preparation method thereof of MXene coated Sis | |
| CN107623121B (en) | Metal-coated porous silicon composite electrode material and preparation method thereof | |
| CN110336078A (en) | A kind of silicon-based anode electrolyte and lithium-ion-power cell | |
| CN108183212B (en) | Mxene-coated porous silicon composite electrode material and preparation method thereof | |
| CN109873206A (en) | Lithium-ion battery electrolytes and lithium ion battery | |
| CN108598461B (en) | Electrolyte and lithium ion battery | |
| CN108640118A (en) | A kind of preparation method of high-purity porous silicon | |
| CN108493417A (en) | A kind of composite material and preparation method of gradient nano porous silicon metal | |
| CN108110240A (en) | A kind of nano-structure porous silicon base complex electrode material and preparation method thereof | |
| CN109786681B (en) | Lithium ion battery anode material with conductive composite coating layer and preparation method thereof | |
| CN113506914A (en) | Ternary lithium ion battery electrolyte and lithium ion battery containing same | |
| CN110112387B (en) | Titanium suboxide coated and modified cathode material and preparation method thereof | |
| CN108767315A (en) | A kind of electrolysis additive, lithium battery electrolytes and lithium ion battery | |
| CN109148954A (en) | A kind of electrolysis additive of high-pressure solid ferric phosphate lithium cell and electrolyte containing the additive | |
| CN113054256A (en) | Electrolyte additive, electrolyte and sodium ion battery | |
| CN116826169A (en) | Sodium ion battery electrolyte additive, electrolyte and battery | |
| CN103633318A (en) | Preparation method for cobaltosic oxide-graphene composite material and preparation method for lithium ion battery | |
| CN103515648B (en) | A kind of lithium manganate battery electrolyte | |
| CN116130798A (en) | Water-based zinc-based battery functional electrolyte and battery | |
| Huakun et al. | Review of SEI film forming additives for electrolyte of lithium ion battery | |
| CN103178298A (en) | Electrolyte for improving high-voltage properties of lithium ion batteries | |
| CN109786809A (en) | A kind of electrolyte and secondary cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181012 |
|
| RJ01 | Rejection of invention patent application after publication |