CN105399148B - Preparation method of large-particle-size and high-density spherical cobalt oxide - Google Patents
Preparation method of large-particle-size and high-density spherical cobalt oxide Download PDFInfo
- Publication number
- CN105399148B CN105399148B CN201510881580.4A CN201510881580A CN105399148B CN 105399148 B CN105399148 B CN 105399148B CN 201510881580 A CN201510881580 A CN 201510881580A CN 105399148 B CN105399148 B CN 105399148B
- Authority
- CN
- China
- Prior art keywords
- particle diameter
- reactor
- density
- preparation
- cobalt
- 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.)
- Active
Links
Landscapes
- Battery Electrode And Active Subsutance (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a preparation method of large-particle-size and high-density spherical cobalt oxide. The preparation method aims at achieving the purposes that the median particle size D50 of the cobalt oxide is larger than or equal to 15 microns, particle size distribution is uniform, compacting density (TD) is larger than or equal to 2.2 g/cm<3>, and the large-particle-size and high-density spherical cobalt oxide can meet the development requirement of high-voltage lithium cobaltate. The preparation method of the cobalt oxide includes the cobalt carbonate synthesis stage and the spherical cobalt carbonate thermal decomposition stage. In the cobalt carbonate synthesis stage, a cobalt carbonate precursor prepared through many times of cyclic crystallization is compact and uniform in particle size distribution; due to the segmented thermal decomposition, cobalt carbonate is locally decomposed in the low-temperature pre-decomposing stage, a micro hole channel is formed, release of CO2 gas during subsequent decomposition is facilitated, and particles are prevented from crazing or being broken; in the high-temperature thermal decomposition stage, the particle surface is compact, and therefore the large-particle-size and high-density spherical cobalt oxide is prepared.
Description
Technical field
The present invention relates to a kind of preparation method of Cobalto-cobaltic oxide, aoxidize particularly to a kind of big particle diameter high-density spherical four
The preparation method of three cobalts.
Background technology
The requirement of 3c electronic product is light, compact, and corresponding battery needs to have high-energy-density.Headed by cobalt acid lithium
The small-scale lithium ion cell selecting positive electrode is widely used at present in 3c electronic product.The pole piece compaction density of spherical lithium cobalt
Can reach 4.1g/cm3, not only have higher tap density, and due to its outstanding mobility and processing characteristics, extremely have
Beneficial to the coating of electrode slice, become important directions of cobalt acid lithium material improvement.Improve anode material for lithium-ion batteries energy
Another means of density are to improve the running voltage of material, and the charge cutoff voltage of current cobalt acid lithium material can reach
4.35v.It is critical only that of cobalt acid lithium preparation prepares satisfactory spheroidization presoma by liquid phase reactor, and big particle diameter is highly dense
Degree Cobalto-cobaltic oxide exactly meets the growth requirement of high voltage cobalt acid lithium.
At present, international market proposes following performance requirement: (1) to big particle diameter Cobalto-cobaltic oxide: more than d50 >=15 μm, grain
Degree is evenly distributed, i.e. qd=(d90-d10)/(d10+d90)≤0.3；(2): Electronic Speculum shows no little particle, no ftracture and crush；(3):
Tap density (td) >=2.2 g/cm3, or even >=2.5 g/cm3., there is following difficulty: crystal first in above-mentioned requirements to be met
When grain grows to certain particle diameter, especially reach more than 15 μm, be difficult to be further continued for growing up, the simultaneous speed of growth is slack-off, pole
Local concentration easily occurs uneven, degree of supersaturation increases and instantaneous burst nucleation, produce substantial amounts of little particle；Its secondary acquisition is high
Density Cobalto-cobaltic oxide, needs finer and close carbonic acid cobalt precursor to be obtained in the Moist chemical synthesis stage, but this kind of big particle diameter cobalt carbonate
There is fierce chemical reaction in the thermal decomposition stage, substantial amounts of co can be discharged2Gas, is easily caused product grain cracking or broken
Broken.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, provide a kind of big particle diameter high-density spherical cobaltic-cobaltous oxide
Preparation method.Cobalto-cobaltic oxide median particle diameter d50 >=15 μm that the inventive method prepares, even particle size distribution, jolt ramming
Density (td) >=2.2 g/cm3, disclosure satisfy that the growth requirement of high voltage cobalt acid lithium.
In order to achieve the above object, a kind of preparation method of big particle diameter high-density spherical cobaltic-cobaltous oxide of the present invention, including
Following steps:
Step one, cobalt carbonate synthesis phase:
1. first one of a certain amount of ammonium carbonate or ammonium bicarbonate soln are injected reactor as bottom liquid, flood reaction
Stirring paddle in kettle；
2. it is warming up to 40～80 DEG C, under agitation by cobalt salt solution with one of ammonium carbonate or ammonium bicarbonate soln simultaneously
Add and precipitation occurs in reactor, charging process control reaction solution ph value, in the range of 6.5～8.5, adds up to material
Full reactor；Charging finishes, and stops stirring, after solid-liquid layering, supernatant is taken away, vacating space continues charging, makes crystal
Continued growth；
3. charging, stratification, the cyclic process 6 ~ 12 times drawing up clear liquid, continuing charging are repeated, now crystal growth is extremely
Crystal seed particle diameter reaches 9 ~ 12 μm；
4. reactor material is carried out point kettle for the first time, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out fast-growth reaction, circulation feeds intake 6 ~ 12 times, and now crystal particle diameter reaches 13 ~ 17
μm；
5. reactor material is carried out second point of kettle, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out repairing growth reaction, circulation feeds intake 6 ~ 12 times, and now crystal particle diameter reaches 18 ~ 23
μm, feed intake and finish；
Step 2, spherical cobaltous carbonate thermal decomposition stage:
After scrubbed and dry for reacted for step one slurry, by gained spherical cobaltous carbonate on pushed bat kiln or rotary kiln
Thermally decompose to yield big particle diameter high-density spherical cobaltic-cobaltous oxide.
Preferably, described cobalt salt is the mixture of one or more of cobaltous chloride, cobaltous sulfate, cobalt nitrate, cobalt salt is molten
The concentration of liquid is 80～160g/l.
Preferably, the concentration of described ammonium carbonate or ammonium bicarbonate soln is 180～230g/l.
Preferably, described spherical cobaltous carbonate thermal decomposition divides two sections: first paragraph low temperature predecomposition, temperature is 200～400
DEG C, cobalt carbonate exploded, form micro channel；Second segment high temperature thermal decomposition, temperature is 500～800 DEG C, and particle surface is fine and close
Change, form big particle diameter high-density spherical cobaltic-cobaltous oxide.
Preferably, the median particle diameter d50 of described big particle diameter high-density spherical cobaltic-cobaltous oxide is 15～21 μm, vibration density
Degree td is 2.2～3.0g/cm3.
Preferably, described reactor is furnished with liquid suction pipe, after solid-liquid layering, pump supernatant.
The carbonic acid cobalt precursor that the present invention is obtained by multiple circulation crystallization in cobalt carbonate synthesis phase is finer and close, and granularity is divided
Cloth is uniform；Thermally decomposed by stagewise, make cobalt carbonate exploded in the low temperature predecomposition stage, form micro channel, after being easy to
Co during continuous decomposition reaction2The release of gas, prevents particle fracture or broken；In the high temperature thermal decomposition stage, particle surface densification,
Thus preparing big particle diameter high-density spherical cobaltic-cobaltous oxide.
Brief description
Fig. 1 is the scanning electron microscope (SEM) photograph of the embodiment of the present invention 1 products obtained therefrom.
Fig. 2 is the scanning electron microscope (SEM) photograph of the embodiment of the present invention 2 products obtained therefrom.
Fig. 3 is the scanning electron microscope (SEM) photograph of the embodiment of the present invention 3 products obtained therefrom.
Specific embodiment
Embodiment 1
1. using a certain amount of ammonium bicarbonate soln injection reactor as bottom liquid, flood stirring paddle；
2. it is warming up to 50 DEG C, be the bicarbonate of 180g/l by the cobalt chloride solution for 80g/l for the concentration and concentration under agitation
Ammonium salt solution is simultaneously introduced generation precipitation in reactor, and charging process control reaction solution ph value is 7.0, until material is filled it up with
Reactor；Charging finishes, and stops stirring, after solid-liquid layering, supernatant is taken away, vacating space continues charging, so that crystal is continued
Continuous growth；
3. charging, stratification, the cyclic process 9 times drawing up clear liquid, continuing charging are repeated, now crystal growth is to crystal seed
Particle diameter reaches 9.4 μm；
4. reactor material is carried out point kettle for the first time, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out fast-growth reaction, circulation feeds intake 7 times, and now crystal particle diameter reaches 14.5 μm；
5. reactor material is carried out second point of kettle, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out repairing growth reaction, circulation feeds intake 8 times, and now crystal particle diameter reaches 18.5 μm,
Feed intake and finish；
6., after will be scrubbed for reacted slurry and dry, gained spherical cobaltous carbonate be thermally decomposed on pushed bat kiln, first
Section low temperature predecomposition temperature is 300 DEG C, and second segment high temperature thermal decomposition is 600 DEG C, obtains big particle diameter high-density spherical four oxidation three
Cobalt.
After testing, its median particle diameter d50 is 17.3 μm to gained big particle diameter high-density spherical cobaltic-cobaltous oxide, tap density td
For 2.45g/cm3, surface sweeping Electronic Speculum is shown in accompanying drawing 1, spheroid flawless, no broken, no fine particle.
Embodiment 2
1. using a certain amount of sal volatile injection reactor as bottom liquid, flood stirring paddle；
2. it is warming up to 70 DEG C, be the ammonium carbonate of 210g/l by the cobalt sulfate solution for 125g/l for the concentration and concentration under agitation
Solution is simultaneously introduced generation precipitation in reactor, and charging process control reaction solution ph value is 8.2, until material is filled it up with instead
Answer kettle；Charging finishes, and stops stirring, after solid-liquid layering, supernatant is taken away, vacating space continues charging, so that crystal is continued
Growth；
3. charging, stratification, the cyclic process 12 times drawing up clear liquid, continuing charging are repeated, now crystal growth is to brilliant
Plant particle diameter and reach 11.8 μm；
4. reactor material is carried out point kettle for the first time, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out fast-growth reaction, circulation feeds intake 12 times, and now crystal particle diameter reaches 15.9 μm；
5. reactor material is carried out second point of kettle, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out repairing growth reaction, circulation feeds intake 12 times, and now crystal particle diameter reaches 22.7 μm,
Feed intake and finish；
6., after will be scrubbed for reacted slurry and dry, gained spherical cobaltous carbonate be thermally decomposed on pushed bat kiln, first
Section low temperature predecomposition temperature is 400 DEG C, and second segment high temperature thermal decomposition is 800 DEG C, obtains big particle diameter high-density spherical four oxidation three
Cobalt.
After testing, its median particle diameter d50 is 20.6 μm to gained big particle diameter high-density spherical cobaltic-cobaltous oxide, tap density td
For 2.63g/cm3, surface sweeping Electronic Speculum is shown in accompanying drawing 2, spheroid flawless, no broken, no fine particle.
Embodiment 3
1. using a certain amount of ammonium bicarbonate soln injection reactor as bottom liquid, flood stirring paddle；
2. it is warming up to 80 DEG C, be the ammonium carbonate of 230g/l by the cobalt nitrate solution for 160g/l for the concentration and concentration under agitation
Solution is simultaneously introduced generation precipitation in reactor, and charging process control reaction solution ph value is 6.7, until material is filled it up with instead
Answer kettle；Charging finishes, and stops stirring, after solid-liquid layering, supernatant is taken away, vacating space continues charging, so that crystal is continued
Growth；
3. charging, stratification, the cyclic process 10 times drawing up clear liquid, continuing charging are repeated, now crystal growth is to brilliant
Plant particle diameter and reach 10.3 μm；
4. reactor material is carried out point kettle for the first time, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out fast-growth reaction, circulation feeds intake 10 times, and now crystal particle diameter reaches 15.4 μm；
5. reactor material is carried out second point of kettle, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out repairing growth reaction, circulation feeds intake 10 times, and now crystal particle diameter reaches 20.6 μm,
Feed intake and finish；
6., after will be scrubbed for reacted slurry and dry, gained spherical cobaltous carbonate be thermally decomposed on pushed bat kiln, first
Section low temperature predecomposition temperature is 250 DEG C, and second segment high temperature thermal decomposition is 750 DEG C, obtains big particle diameter high-density spherical four oxidation three
Cobalt.
After testing, its median particle diameter d50 is 18.7 μm to gained big particle diameter high-density spherical cobaltic-cobaltous oxide, tap density td
For 2.54g/cm3, surface sweeping Electronic Speculum is shown in accompanying drawing 3, spheroid flawless, no broken, no fine particle.
Embodiment 4
1. using a certain amount of ammonium bicarbonate soln injection reactor as bottom liquid, flood stirring paddle；
2. it is warming up to 40 DEG C, be the bicarbonate of 200g/l by the cobalt chloride solution for 100g/l for the concentration and concentration under agitation
Ammonium salt solution is simultaneously introduced generation precipitation in reactor, and charging process control reaction solution ph value is 8.5, until material is filled it up with
Reactor；Charging finishes, and stops stirring, after solid-liquid layering, supernatant is taken away, vacating space continues charging, so that crystal is continued
Continuous growth；
3. charging, stratification, the cyclic process 6 times drawing up clear liquid, continuing charging are repeated, now crystal growth is to crystal seed
Particle diameter reaches 9 μm；
4. reactor material is carried out point kettle for the first time, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out fast-growth reaction, circulation feeds intake 6 times, and now crystal particle diameter reaches 13 μm；
5. reactor material is carried out second point of kettle, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out repairing growth reaction, circulation feeds intake 6 times, and now crystal particle diameter reaches 18 μm, throws
Material finishes；
6., after will be scrubbed for reacted slurry and dry, gained spherical cobaltous carbonate be thermally decomposed on pushed bat kiln, first
Section low temperature predecomposition temperature is 200 DEG C, and second segment high temperature thermal decomposition is 500 DEG C, obtains big particle diameter high-density spherical four oxidation three
Cobalt.
After testing, its median particle diameter d50 is 15.0 μm to gained big particle diameter high-density spherical cobaltic-cobaltous oxide, tap density td
For 2.20g/cm3.
Embodiment 5
1. using a certain amount of ammonium bicarbonate soln injection reactor as bottom liquid, flood stirring paddle；
2. it is warming up to 60 DEG C, be the bicarbonate of 190g/l by the cobalt chloride solution for 120g/l for the concentration and concentration under agitation
Ammonium salt solution is simultaneously introduced generation precipitation in reactor, and charging process control reaction solution ph value is 6.5, until material is filled it up with
Reactor；Charging finishes, and stops stirring, after solid-liquid layering, supernatant is taken away, vacating space continues charging, so that crystal is continued
Continuous growth；
3. charging, stratification, the cyclic process 8 times drawing up clear liquid, continuing charging are repeated, now crystal growth is to crystal seed
Particle diameter reaches 12 μm；
4. reactor material is carried out point kettle for the first time, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out fast-growth reaction, circulation feeds intake 8 times, and now crystal particle diameter reaches 17 μm；
5. reactor material is carried out second point of kettle, ageing tank will be transferred to by half material, stay half in reactor
Continue to feed intake, 2. repeat step, makes crystal carry out repairing growth reaction, circulation feeds intake 9 times, and now crystal particle diameter reaches 23 μm, throws
Material finishes；
6., after will be scrubbed for reacted slurry and dry, gained spherical cobaltous carbonate be thermally decomposed on pushed bat kiln, first
Section low temperature predecomposition temperature is 350 DEG C, and second segment high temperature thermal decomposition is 700 DEG C, obtains big particle diameter high-density spherical four oxidation three
Cobalt.
After testing, its median particle diameter d50 is 21.0 μm to gained big particle diameter high-density spherical cobaltic-cobaltous oxide, tap density td
For 3.00g/cm3.
Claims (6)
1. a kind of preparation method of big particle diameter high-density spherical cobaltic-cobaltous oxide it is characterised in that: comprise the steps:
Step one, cobalt carbonate synthesis phase:
1. first one of a certain amount of ammonium carbonate or ammonium bicarbonate soln are injected reactor as bottom liquid, flood in reactor
Stirring paddle；
2. it is warming up to 40～80 DEG C, under agitation cobalt salt solution is simultaneously introduced with one of ammonium carbonate or ammonium bicarbonate soln
There is precipitation, charging process control reaction solution ph value, in the range of 6.5～8.5, is filled it up with instead up to material in reactor
Answer kettle；Charging finishes, and stops stirring, after solid-liquid layering, supernatant is taken away, vacating space continues charging, so that crystal is continued
Growth；
3. charging, stratification, the cyclic process 6 ~ 12 times drawing up clear liquid, continuing charging are repeated, now crystal growth is to crystal seed
Particle diameter reaches 9 ~ 12 μm；
4. reactor material is carried out point kettle for the first time, ageing tank will be transferred to by half material, stay half to continue in reactor
Feed intake, 2. repeat step, makes crystal carry out fast-growth reaction, circulation feeds intake 6 ~ 12 times, and now crystal particle diameter reaches 13 ~ 17 μm；
5. reactor material is carried out second point of kettle, ageing tank will be transferred to by half material, stay half to continue in reactor
Feed intake, 2. repeat step, makes crystal carry out repairing growth reaction, circulation feeds intake 6 ~ 12 times, and now crystal particle diameter reaches 18 ~ 23 μm,
Feed intake and finish；
Step 2, spherical cobaltous carbonate thermal decomposition stage:
After scrubbed and dry for reacted for step one slurry, by gained spherical cobaltous carbonate, on pushed bat kiln or rotary kiln, heat is divided
Solution, described thermal decomposition divides two sections: first paragraph low temperature predecomposition, and temperature is 200～400 DEG C, cobalt carbonate exploded, forms micropore
Passage；Second segment high temperature thermal decomposition, temperature is 500～800 DEG C, particle surface densification, forms big particle diameter high-density spherical four
Co 3 O.
2. a kind of big particle diameter high-density spherical cobaltic-cobaltous oxide according to claim 1 preparation method it is characterised in that:
Described cobalt salt is the mixture of one or more of cobaltous chloride, cobaltous sulfate, cobalt nitrate, the concentration of cobalt salt solution is 80～
160g/l.
3. the preparation method of a kind of big particle diameter high-density spherical cobaltic-cobaltous oxide according to claim 1 and 2, its feature exists
In: the concentration of described ammonium carbonate or ammonium bicarbonate soln is 180～230g/l.
4. the preparation method of a kind of big particle diameter high-density spherical cobaltic-cobaltous oxide according to claim 1 and 2, its feature exists
It is 15～21 μm in: the median particle diameter d50 of described big particle diameter high-density spherical cobaltic-cobaltous oxide, tap density td is 2.2～
3.0g/cm3.
5. a kind of big particle diameter high-density spherical cobaltic-cobaltous oxide according to claim 3 preparation method it is characterised in that:
The median particle diameter d50 of described big particle diameter high-density spherical cobaltic-cobaltous oxide is 15～21 μm, and tap density td is 2.2～3.0g/
cm3.
6. a kind of big particle diameter high-density spherical cobaltic-cobaltous oxide according to claim 1 preparation method it is characterised in that:
Described reactor is furnished with liquid suction pipe, pumps supernatant after solid-liquid layering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881580.4A CN105399148B (en) | 2015-12-07 | 2015-12-07 | Preparation method of large-particle-size and high-density spherical cobalt oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881580.4A CN105399148B (en) | 2015-12-07 | 2015-12-07 | Preparation method of large-particle-size and high-density spherical cobalt oxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105399148A CN105399148A (en) | 2016-03-16 |
| CN105399148B true CN105399148B (en) | 2017-01-25 |
Family
ID=55464961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510881580.4A Active CN105399148B (en) | 2015-12-07 | 2015-12-07 | Preparation method of large-particle-size and high-density spherical cobalt oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105399148B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776356A (en) * | 2016-03-22 | 2016-07-20 | 阳江市联邦金属化工有限公司 | Preparation method of spherical compact tricobalt tetroxide |
| CN105800699A (en) * | 2016-04-20 | 2016-07-27 | 湖南海纳新材料有限公司 | Method for preparing high-sphericity-degree and large-particle cobaltosic oxide |
| CN106882843B (en) * | 2017-01-19 | 2018-08-17 | 衢州华友钴新材料有限公司 | A kind of preparation method of densification crystal form cobaltosic oxide |
| CN108011101B (en) * | 2017-11-28 | 2020-04-03 | 衢州华友钴新材料有限公司 | Preparation method of large-particle-size uniformly-aluminum-doped cobaltosic oxide |
| CN108190971B (en) * | 2017-12-25 | 2020-01-07 | 荆门市格林美新材料有限公司 | Method for preparing cobalt carbonate |
| CN108609666B (en) * | 2018-04-25 | 2020-06-02 | 中南林业科技大学 | Preparation method of metal element gradient doped cobaltosic oxide |
| CN108439489B (en) * | 2018-05-15 | 2020-08-04 | 厦门钨业股份有限公司 | Preparation method of high-tap-density battery-grade cobaltosic oxide |
| CN109179516B (en) * | 2018-10-30 | 2020-12-25 | 中伟新材料股份有限公司 | Aluminum-doped small-particle spherical cobaltosic oxide and preparation method thereof |
| CN109824094A (en) * | 2019-03-20 | 2019-05-31 | 兰州金川新材料科技股份有限公司 | A kind of production method of high voltage cobalt acid lithium bulky grain cobalt carbonate |
| CN110217832B (en) * | 2019-04-23 | 2021-08-27 | 金川集团股份有限公司 | Preparation method of large-particle narrow-distribution aluminum-doped cobaltosic oxide |
| CN110217831B (en) * | 2019-04-23 | 2021-08-27 | 金川集团股份有限公司 | Preparation method of large-particle spherical narrow-distribution cobaltosic oxide for high-voltage lithium cobaltate |
| CN112479264B (en) * | 2019-09-12 | 2022-11-01 | 巴斯夫杉杉电池材料有限公司 | Doped large-particle cobalt carbonate and method for preparing same by using waste cobalt acid lithium battery |
| CN112850801B (en) * | 2019-11-28 | 2023-10-31 | 荆门市格林美新材料有限公司 | Preparation method of large-particle cobaltosic oxide |
| CN111082007B (en) * | 2019-12-10 | 2021-04-13 | 衢州华友钴新材料有限公司 | Nano basic aluminum cobalt carbonate/cobalt carbonate composite spherical precursor |
| CN112897596B (en) * | 2021-04-22 | 2023-03-10 | 衢州华友钴新材料有限公司 | High-purity cobalt carbonate particles and preparation method thereof |
| CN113277568A (en) * | 2021-05-14 | 2021-08-20 | 浙江中金格派锂电产业股份有限公司 | Preparation method of high-conductivity lithium cobalt oxide positive electrode material |
| CN114956197B (en) * | 2022-06-20 | 2024-05-28 | 江西佳纳能源科技有限公司 | Spherical cobalt carbonate, preparation method thereof and lithium ion battery anode material |
| CN115571924B (en) * | 2022-09-28 | 2024-05-10 | 广东邦普循环科技有限公司 | Aluminum fluorine co-doped cobaltosic oxide and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11292548A (en) * | 1998-04-13 | 1999-10-26 | Ishihara Sangyo Kaisha Ltd | Tricobalt tetroxide and its production |
| JP2002211930A (en) * | 2001-01-12 | 2002-07-31 | Sumitomo Metal Mining Co Ltd | Method for producing cobalt oxide particles by neutralization method |
| CN101200308A (en) * | 2007-11-09 | 2008-06-18 | 浙江华友钴镍材料有限公司 | Preparation method of cobaltosic oxide for electric battery |
| CN101269848A (en) * | 2008-03-05 | 2008-09-24 | 广州融捷材料科技有限公司 | High-density spherical cobaltic-cobaltous oxide and method for preparing the same |
-
2015
- 2015-12-07 CN CN201510881580.4A patent/CN105399148B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11292548A (en) * | 1998-04-13 | 1999-10-26 | Ishihara Sangyo Kaisha Ltd | Tricobalt tetroxide and its production |
| JP2002211930A (en) * | 2001-01-12 | 2002-07-31 | Sumitomo Metal Mining Co Ltd | Method for producing cobalt oxide particles by neutralization method |
| CN101200308A (en) * | 2007-11-09 | 2008-06-18 | 浙江华友钴镍材料有限公司 | Preparation method of cobaltosic oxide for electric battery |
| CN101269848A (en) * | 2008-03-05 | 2008-09-24 | 广州融捷材料科技有限公司 | High-density spherical cobaltic-cobaltous oxide and method for preparing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105399148A (en) | 2016-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105399148B (en) | Preparation method of large-particle-size and high-density spherical cobalt oxide | |
| CN108011101B (en) | Preparation method of large-particle-size uniformly-aluminum-doped cobaltosic oxide | |
| CN112723422B (en) | Aluminum-doped cobaltosic oxide core-shell material and preparation method thereof | |
| CN102683649B (en) | Method for preparing lithium ion battery carbon silicon anode material | |
| CN104201368B (en) | Lithium battery ternary material precursor nickel cobalt manganese hydroxide and preparation method thereof | |
| CN106532051A (en) | Method for preparing negative electrode material of power lithium-ion battery by using natural graphite | |
| CN109244454B (en) | NCM ternary cathode material with hierarchical structure | |
| CN102394287A (en) | Silicon-carbon negative electrode material of lithium ion battery and preparation method thereof | |
| CN104538609B (en) | Negative electrode composite material for lithium ion battery and preparation method of negative electrode composite material | |
| CN106602023B (en) | A kind of method of fabricated in situ graphite phase carbon nitride-oxidation carbon/carbon-copper composite material | |
| CN105680013A (en) | Preparation method for silicon/graphite/carbon composite negative electrode material of lithium ion battery | |
| CN102437324B (en) | Preparation method of cobalt-manganese composite oxide nanoparticles and cobalt-manganese composite oxide nanoparticles prepared by adopting same | |
| WO2024000840A1 (en) | Preparation method for ammonium manganese iron phosphate, and lithium manganese iron phosphate and use thereof | |
| CN105810894A (en) | Multilayer coated structure lithium ion battery positive electrode material preparation method | |
| CN107256964A (en) | A kind of preparation method of the bar-shaped nickel ion doped of high-voltage lithium-battery cathode material | |
| CN105830261B (en) | Cobalt hydroxide particle and its manufacturing method and positive active material and its manufacturing method | |
| CN106299254B (en) | A kind of preparation method of nickel-cobalt lithium manganate cathode material | |
| CN109319757A (en) | The method for preparing hollow open onion carbon lithium ion cell negative electrode material | |
| CN110615480A (en) | Method for preparing layered lithium manganate material by dynamic hydrothermal method | |
| CN102800858A (en) | Preparation method and purpose for iron oxide-based anode material for lithium ion battery | |
| CN102185136A (en) | Preparation method of lithium ion battery cathode material nano lithium iron phosphate | |
| CN107437613A (en) | A kind of preparation method of micro crystal graphite-hard carbon composite negative pole material | |
| CN107256948A (en) | A kind of High Performance Phenolic Resins charcoal bag covers spherical graphite negative material preparation method | |
| CN107978744B (en) | Positive electrode material for high-capacity lithium secondary battery and preparation method thereof | |
| CN102544494A (en) | Preparation method of nano composite lithium iron phosphate cathode material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |