CN107195881A - A kind of method that lithium ion battery negative material is prepared by raw material of rock - Google Patents
A kind of method that lithium ion battery negative material is prepared by raw material of rock Download PDFInfo
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- CN107195881A CN107195881A CN201710372678.6A CN201710372678A CN107195881A CN 107195881 A CN107195881 A CN 107195881A CN 201710372678 A CN201710372678 A CN 201710372678A CN 107195881 A CN107195881 A CN 107195881A
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
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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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- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
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Abstract
The invention discloses a kind of method that lithium ion battery negative material is prepared by raw material of rock.Preparation process includes：One kind in sedimentary rock, igneous rock, metamorphic rock, decomposed rock is chosen, grind into powder is standby；Above-mentioned appropriate powder is weighed, 1~3h is calcined at 600~1000 DEG C in Muffle furnace, is cooled to after room temperature, it is ground to obtain lithium ion battery negative material.Cost of material of the present invention is low, abundance, and preparation technology is simple.The present invention has prepared a kind of brand-new negative material entirely different with lithium cell cathode material that is having now been found that composition using the method simply calcined.It is demonstrated experimentally that the material has certain capacity under certain charging and discharging currents density, and with preferable cyclical stability, it is expected to turn into a kind of brand-new cathode of lithium battery new material.
Description
Technical field
The present invention relates to a kind of method for preparing lithium ion battery material, particularly one kind prepared by raw material of rock lithium from
The method of sub- cell negative electrode material, belongs to technical field of energy material.
Background technology
Lithium ion battery, abbreviation lithium battery, with having extended cycle life, specific energy and energy density per unit volume it is high and without dirt
The advantages of dye, universal application is obtained in portable electric appts and electric automobile.The positive electrode of lithium battery is general
It is the metal oxide containing lithium, such as cobalt acid lithium, LiMn2O4, lithium nickelate, and its negative material is mainly carbon material graphite.Newly
Near research shows, the current potential of graphite and the current potential of lithium metal are very close to when over-charging of battery, list is just had on the surface of graphite
Matter lithium is separated out, and forms Li dendrite.Li dendrite can puncture barrier film under given conditions, cause both positive and negative polarity short circuit and cause peace
Full problem.Therefore developing new lithium cell cathode material just becomes one of hot issue of lithium battery research field.At present,
Commercialized novel lithium battery cathode material is mainly lithium titanate.But research finds that lithium titanate has that discharge platform is higher, power
It is clearly disadvantageous that density and energy density are relatively low, production cost is higher etc..At the same time, people are also by metal oxide such as oxidation
Iron, metal simple-substance such as metallic tin etc. is used as lithium cell cathode material, but studies have shown that their high preparation costs, difference
The defects such as cyclical stability seriously limit their further commercial applications.Therefore, exploitation novel lithium battery cathode is explored
Material is still the study hotspot of field of lithium.
The content of the invention
It is an object of the invention to provide a kind of method that lithium cell cathode material is prepared by raw material of rock.
The object of the present invention is achieved like this.A kind of method that lithium cell cathode material is prepared by raw material of rock, it is main
Comprise the following steps：
（1）The preparation of material
One kind in sedimentary rock, igneous rock, metamorphic rock, decomposed rock is chosen, dried material is weighed, ground in agate mortar
30~50 minutes, grind into powder was standby；
（2）The preparation of active material
Above-mentioned powder is weighed, by its tabletting, 1~3h is then calcined into obtained tabletting at 600~1000 DEG C in Muffle furnace,
It is cooled to after room temperature, it is ground to obtain lithium cell cathode material.
What the present invention was obtained has the beneficial effect that：Cost of material of the present invention is low, abundance, and preparation technology is simple.Using
The method simply calcined has prepared a kind of brand-new negative pole entirely different with lithium cell cathode material that is having now been found that composition
Material.It is demonstrated experimentally that the material has certain capacity under certain charging and discharging currents density, and it is steady with preferably circulation
It is qualitative, it is expected to turn into a kind of brand-new lithium cell cathode material.
Brief description of the drawings
Fig. 1 is the half-cell being assembled into using the material of the invention prepared with elemental lithium in 100mAg-1Under current density
First charge-discharge figure.
Fig. 2 is the half-cell being assembled into using the material of the invention prepared with elemental lithium in 100mAg-1Under current density
Specific discharge capacity circulation figure.
Fig. 3 is that the SEM for preparing material using the present invention schemes.
Fig. 4 is that the EDS for preparing material using the present invention schemes.
Embodiment
Following examples are used to illustrate the present invention.
Embodiment 1
Dried sedimentary rock 15g is chosen, is ground 35 minutes in agate mortar, above-mentioned powder 8g is then weighed, tabletting,
1.5h is calcined in Muffle furnace at 900 DEG C, is cooled to after room temperature, it is ground to obtain lithium cell cathode material.
Active material powder, acetylene black, Kynoar are weighed respectively（m（Active material powder）：m（Acetylene black）：m（Kynoar）=8:1:1）
Three kinds of materials are placed in agate mortar, and grinding makes three kinds of material mixings uniform, afterwards, and appropriate 1-METHYLPYRROLIDONE is added dropwise and adjusts
Cream is made, is equably pressed and is put on copper foil with sheet glass, is dried in vacuo 6h at 120 DEG C, is used as anode.With lithium piece
For negative pole, polypropylene 2400 is barrier film, containing 1 mol/L LiPF6Organic electrolyte be electrolyte, assemble half-cell.Note,
Half-cell is completed in the glove box full of high pure nitrogen.
Referring to Fig. 1, the half-cell that prepared material is assembled with lithium piece is in 100mAg-1First charge-discharge under current density
Curve.As seen from Figure 1, the half-cell of material assembling is in 100mAg-1First discharge specific capacity under current density reaches
100mAhg-1。
Referring to Fig. 2, the half-cell that prepared material is assembled with lithium piece is in 100mAg-1Specific discharge capacity under current density
Circulation figure.From Figure 2 it can be seen that after the circle of discharge and recharge 20, battery capacity still maintains 63mAhg-1。
Referring to Fig. 3, the SEM photograph of prepared material.From figure 3, it can be seen that the material is irregular blocky-shaped particle, grain
Footpath is at 10 μm or so.
Referring to Fig. 4, the EDS spectrograms of prepared material.Can be seen that from Fig. 4 EDS spectrograms, the material mainly contain O, Si, C,
The elements such as Fe, Ca, and Si, O, C content（The content of atom number）It is about 21%, 60%, 15% respectively.This illustrates the material
It is entirely different with the lithium cell cathode material such as the carbon material reported at present, metal oxide, elemental silicon and simple substance tin, it is a kind of complete
New material.
Embodiment 2
Dried igneous rock 15g is chosen, is ground 35 minutes in agate mortar, above-mentioned powder 10g is then weighed, tabletting,
1h is calcined in Muffle furnace at 800 DEG C, is cooled to after room temperature, it is ground to obtain lithium cell cathode material.
Embodiment 3
Dried metamorphic rock 12g is chosen, is ground 40 minutes in agate mortar, above-mentioned powder 8g is then weighed, tabletting,
1.5h is calcined in Muffle furnace at 700 DEG C, is cooled to after room temperature, it is ground to obtain lithium cell cathode material.
Embodiment 4
Dried decomposed rock 16g is chosen, is ground 45 minutes in agate mortar, above-mentioned powder 10g is then weighed, tabletting,
2h is calcined in Muffle furnace at 600 DEG C, is cooled to after room temperature, it is ground to obtain lithium cell cathode material.
Embodiment 5
Dried sedimentary rock 18g is chosen, is ground 50 minutes in agate mortar, above-mentioned powder 8g is then weighed, tabletting,
2.5h is calcined in Muffle furnace at 750 DEG C, is cooled to after room temperature, it is ground to obtain lithium cell cathode material.
Embodiment 6
Dried metamorphic rock 15g is chosen, is ground 50 minutes in agate mortar, above-mentioned powder 8g is then weighed, tabletting,
1h is calcined in Muffle furnace at 850 DEG C, is cooled to after room temperature, it is ground to obtain lithium cell cathode material.
Claims (1)
1. a kind of method that lithium ion battery negative material is prepared by raw material of rock, it is characterised in that comprise the following steps：
（1）The preparation of material
One kind in sedimentary rock, igneous rock, metamorphic rock, decomposed rock is chosen, dried material is weighed, ground in agate mortar
30~50 minutes, grind into powder was standby；
（2）The preparation of active material
Above-mentioned powder is weighed, by its tabletting, 1~3h is then calcined into obtained tabletting at 600~1000 DEG C in Muffle furnace,
It is cooled to after room temperature, it is ground to obtain lithium ion battery negative material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710372678.6A CN107195881A (en) | 2017-05-24 | 2017-05-24 | A kind of method that lithium ion battery negative material is prepared by raw material of rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710372678.6A CN107195881A (en) | 2017-05-24 | 2017-05-24 | A kind of method that lithium ion battery negative material is prepared by raw material of rock |
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| CN107195881A true CN107195881A (en) | 2017-09-22 |
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| CN201710372678.6A Pending CN107195881A (en) | 2017-05-24 | 2017-05-24 | A kind of method that lithium ion battery negative material is prepared by raw material of rock |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109860525A (en) * | 2018-11-09 | 2019-06-07 | 章茨伍 | A kind of method for manufacturing battery cathode |
| CN109888231A (en) * | 2019-03-04 | 2019-06-14 | 河北师范大学 | A method of lithium cell cathode material is prepared using waste and old cement as raw material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885596A (en) * | 2006-05-24 | 2006-12-27 | 天津大学 | Lithium ion battery negative electrode material |
| US20130045424A1 (en) * | 2008-12-24 | 2013-02-21 | Ngk Insulators, Ltd. | Plate-like particle for cathode active material for lithium secondary battery, cathode active material film for lithium secondary battery, methods for manufacturing the particle and film, method for manufacturing cathode active material for lithium secondary battery, and lithium secondary battery |
| CN106058179A (en) * | 2016-07-06 | 2016-10-26 | 湖南大学 | Preparation method of carbon nanotube/silica/carbon composite cathode material |
-
2017
- 2017-05-24 CN CN201710372678.6A patent/CN107195881A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885596A (en) * | 2006-05-24 | 2006-12-27 | 天津大学 | Lithium ion battery negative electrode material |
| US20130045424A1 (en) * | 2008-12-24 | 2013-02-21 | Ngk Insulators, Ltd. | Plate-like particle for cathode active material for lithium secondary battery, cathode active material film for lithium secondary battery, methods for manufacturing the particle and film, method for manufacturing cathode active material for lithium secondary battery, and lithium secondary battery |
| CN106058179A (en) * | 2016-07-06 | 2016-10-26 | 湖南大学 | Preparation method of carbon nanotube/silica/carbon composite cathode material |
Non-Patent Citations (1)
| Title |
|---|
| 子安腾: "《建筑吸声材料》", 31 August 1975, 中国建筑工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109860525A (en) * | 2018-11-09 | 2019-06-07 | 章茨伍 | A kind of method for manufacturing battery cathode |
| CN109888231A (en) * | 2019-03-04 | 2019-06-14 | 河北师范大学 | A method of lithium cell cathode material is prepared using waste and old cement as raw material |
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Application publication date: 20170922 |
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