CN101182043A - Method for preparing spherical cobaltous oxide - Google Patents
Method for preparing spherical cobaltous oxide Download PDFInfo
- Publication number
- CN101182043A CN101182043A CNA2007101564815A CN200710156481A CN101182043A CN 101182043 A CN101182043 A CN 101182043A CN A2007101564815 A CNA2007101564815 A CN A2007101564815A CN 200710156481 A CN200710156481 A CN 200710156481A CN 101182043 A CN101182043 A CN 101182043A
- Authority
- CN
- China
- Prior art keywords
- cobalt
- cobaltous oxide
- reaction
- passivator
- control
- 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.)
- Granted
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 discloses a preparation method of spherical cobaltous oxide, and relates to cobalt solution which is obtained by the leaching and purification of cobalt ore that is used as cobalt raw material. The invention is characterized in that a precursor is prepared by a complexing-homogeneous precipitation method, that is the cobalt solution is made into complexing cobalt salt solution which is then added with precipitator solution, thereby, the precipitate precursor is formed by controlling the synthesis of the precursor; the spherical cobaltous oxide is obtained by the thermal decomposition of the precursor at 300 to 550 degrees under inert or slight reducing gas atmosphere; and then spherical cobaltous oxide of the invention is formed through the associated passivation of the obtained spherical cobaltous oxide by using gas passivator and liquid passivator, and heat seal packing. The cobaltous oxide powder which is obtained by adopting the method of the invention has the advantages of high activity, high purity, uniform particle size, centralized distribution, smooth surface of particles and strong inoxidability, etc. The invention has easy technology flow, stable production quality, low cost, high automation, thereby being applicable to the large-scale industrialized production.
Description
Technical field
The present invention relates to a kind of preparation of cobaltous oxide, particularly a kind of method for preparing spherical cobaltous oxide.
Background technology
Cobaltous oxide is the important anode filler of Ni/Cd and Ni/MH battery, Co in battery
2+The layer that ion can enter nickel hydroxide improves the performance of nickel hydroxide in the lattice, obtains the high electrode materials of a kind of charging efficiency, as Chinese patent CN1173855.As the important component part of electrode materials, the general requirement cobaltous oxide has good reactive behavior and high purity.
The powder of cobaltous oxide product is essentially amorphous structure on the market at present, is the reunion shape, and globule size differs, size-grade distribution is not concentrated.Such powder is unfavorable for the homogeneity of batch mixing in battery making processes, may cause the discordance of component segregation and battery performance.Cobaltous oxide is a suboxide, and chemical property is active, easy deterioration by oxidation in air.The amorphous structure cobaltous oxide is because its particle surface is coarse, and surface-area is too big, and its oxidation-resistance is poor.It consists of CoOCo the cobaltous oxide of Chinese patent CN1321795 employing electrolytic process preparation
xThough having of the pure cobalt of part is beneficial to oxidation-resistance, it can influence the later stage discharge performance of battery again.
Summary of the invention
The objective of the invention is to propose a kind of sphere, high purity, size-grade distribution is concentrated, oxidation-resistance is strong cobaltous oxide method prepared for the deficiency that solves above-mentioned prior art.
In order to achieve the above object, a kind of method for preparing spherical cobaltous oxide provided by the invention, it comprises with the cobalt ore being cobalt raw material, after leaching purification, the cobalt liquid that obtains is characterized in that adopting complexing-homogeneous precipitation method to prepare precursor, is about to cobalt liquid and is mixed with the complex cobalt salts solution, again by adding precipitant solution, the synthetic throw out presoma that obtains of control presoma; Again to presoma at 300 ℃-550 ℃, carry out thermolysis in the atmosphere of inertia or little reducing gas and obtain spherical cobaltous oxide, behind the spherical cobaltous oxide employing gas passivator and liquid passivator associating passivation that make, adopt heat sealed package to obtain cobaltous oxide of the present invention.
Its preparation process is:
(a) adopt that to contain the cobalt ore material be raw material, through leach purify after, obtain the cobalt liquid of 5g/L-50g/L; This cobalt liquid is high purity cobalt liquid, and described high purity cobalt liquid refers to the cobalt liquid that foreign matter content is lower.
(b). the 0.1%-5% that presses the cobalt quality in above-mentioned cobalt liquid adds one or more in ammoniacal liquor, Polyvinylpyrolidone (PVP) (PVP), polyvinyl alcohol (PVA), cetyl trimethylammonium bromide (CTAB), polyoxyethylene glycol PEG (1000), the water soluble starch, as the complex cobalt salts solution;
(c). select a kind of in bicarbonate of ammonia, volatile salt, yellow soda ash or the sodium hydroxide for use, be made into the 10g/L-100g/L precipitant solution through dissolving, after filtering as precipitation agent;
(d). with excessive 10%-30% precipitant solution and complex cobalt salts solution, add reactor with the cocurrent adding material method, it is 30 ℃-90 ℃ that body synthetic temperature of reaction is driven in control, pH value in reaction is 3.0-9.0, stirring velocity is 400rpm-3000rpm, makes the throw out of cobalt salt continuously as precursor with complexing-homogeneous precipitation method;
(e). precursor is after filtration, after the vacuum-drying, send into tube furnace and carry out thermolysis obtain spherical cobaltous oxide in the atmosphere of 300 ℃-550 ℃, inertia or little reducing gas;
(f). after spherical cobaltous oxide adopted gas passivator and liquid passivator associating passivation passivation, with heat-sealing or vacuum-packed.
The atmosphere of described inertia or little reducing gas is meant N
2, CO
2Or CO, N
2/ H
2Described gas passivator is meant N
2Or CO
2, liquid passivator is meant alcohol, acetone, gasoline or oleic acid.
In complexing-precipitation from homogeneous solution (PFHS) reaction process, the control of DCS distributed control system is adopted in its described control presoma synthetic temperature of reaction, pH value in reaction and stirring velocity and cocurrent adding material control.At this, DCS is the english abbreviation of distributed control system, and distributed control system is the Essential Terms in the control automatically, does not describe in detail at this.
Compare with existing method, the present invention has the following advantages:
1. active high, the advantage such as purity is high, epigranular and distributing is concentrated, particle surface is smooth and oxidation-resistance is strong of the cobaltous oxide powder that makes by the inventive method;
2. utilize the synthetic of crystallization theory control presoma,,, can control the pattern and the granularity of precursor by control to synthetic reaction parameter with complexing-homogeneous precipitation method continuous production presoma;
3. adopt highly intelligentized DCS distributed control system that synthetic reaction process is controlled, can be to the various processing parameters of building-up reactions, as: temperature of reaction, pH value, strength of solution, feed rate and stirring velocity etc. realize accurately control, this has been avoided the error of manual operation, realize standardized work, can guarantee the stability of the every index of product;
4. the cobalt liquid after directly employing purifies is as raw material, and crystallization, dissolution process that this has been avoided cobalt salt help reducing product cost;
5. with after gas passivator and the liquid passivator associating passivation, can contact with airborne oxygen by the inferior cobalt dust of isolation oxidation, improve the oxidation-resistance of cobaltous oxide;
6. wrapping process adopts heat-sealing, can avoid vacuum-packed extruding to powder, is convenient to prepare the use in the cell process;
7. technical process of the present invention is simple, constant product quality, and cost is low, and the level of automation height is suitable for large-scale industrial production.
Description of drawings
Fig. 1 schemes for the XRD (X-ray diffraction) of the CoO that the present invention makes;
The laser particle size distribution plan of the CoO that Fig. 2 a makes for the present invention;
Fig. 2 b is the laser particle size distribution plan of the CoO that makes of usual way;
Fig. 3 a schemes for the SEM (scanning electron microscope) of the CoO that the present invention makes;
Fig. 3 b is the SEM figure of the CoO that makes of usual way.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
As shown in Figure 1, a kind of method for preparing spherical cobaltous oxide that present embodiment is described, it is raw material that employing contains the cobalt ore material, after leaching purification, obtain highly purified 5g/L-50g/L cobalt liquid, the 0.1%-5% that presses the cobalt quality in above-mentioned cobalt liquid adds ammoniacal liquor, Polyvinylpyrolidone (PVP) (PVP), polyvinyl alcohol (PVA), cetyl trimethylammonium bromide (CTAB), polyoxyethylene glycol PEG (1000), in the water soluble starch one or more, as the complex cobalt salts solution, select bicarbonate of ammonia for use, volatile salt, a kind of as precipitation agent in yellow soda ash or the sodium hydroxide is through dissolving, be made into the 10g/L-100g/L precipitant solution after the filtration; With excessive 10%-30% precipitant solution and complex cobalt salts solution, add reactor with the cocurrent adding material method, coming control reaction temperature by DCS distributed control system device is 30 ℃-90 ℃, pH value in reaction is 3.0-9.0, stirring velocity is 400rpm-3000rpm, makes the throw out of cobalt salt continuously as precursor with complexing-homogeneous precipitation method; Precursor after filtration, after the washing, vacuum-drying, send into tube furnace obtains chemical purity height (its thing mutually as shown in Figure 1), epigranular distribution concentrated (its size-grade distribution is shown in Fig. 2 a) 300 ℃ of-550 ℃ of thermolysiss spherical cobaltous oxide (its pattern is shown in Fig. 3 a), cobaltous oxide is adopted gas passivator N2 or CO2 passivation 10min-30min, use a kind of passivation in liquid passivator alcohol, acetone, gasoline or the oleic acid again, after the associating passivation, adopt heat sealed package.At this, DCS is the english abbreviation of distributed control system, and distributed control system is the Essential Terms in the control automatically, does not describe in detail at this.
Claims (9)
1. method for preparing spherical cobaltous oxide, it comprises with the cobalt ore being cobalt raw material, after leaching purification, the cobalt liquid that obtains, it is characterized in that adopting complexing-homogeneous precipitation method to prepare precursor, be about to cobalt liquid and be mixed with the complex cobalt salts solution, again by adding precipitant solution, the synthetic throw out presoma that obtains of control presoma; Again to presoma at 300 ℃-550 ℃, carry out thermolysis in the atmosphere of inertia or little reducing gas and obtain spherical cobaltous oxide, behind the spherical cobaltous oxide employing gas passivator and liquid passivator associating passivation that make, adopt heat sealed package to obtain cobaltous oxide of the present invention.
2. a kind of method for preparing spherical cobaltous oxide according to claim 1 is characterized in that preparation process is:
(a) adopt that to contain the cobalt ore material be raw material, through leach purify after, the 5g/L-50g/L cobalt liquid that obtains;
(b). the 0.1%-5% that presses the cobalt quality in above-mentioned cobalt liquid adds one or more in ammoniacal liquor, Polyvinylpyrolidone (PVP) (PVP), polyvinyl alcohol (PVA), cetyl trimethylammonium bromide (CTAB), polyoxyethylene glycol PEG (1000), the water soluble starch, as the complex cobalt salts solution;
(c). select a kind of in bicarbonate of ammonia, volatile salt, yellow soda ash or the sodium hydroxide for use, be made into the 10g/L-100g/L precipitant solution through dissolving, after filtering as precipitation agent;
(d). with excessive 10%-30% precipitant solution and complex cobalt salts solution, add reactor with the cocurrent adding material method, it is 30 ℃-90 ℃ that body synthetic temperature of reaction is driven in control, pH value in reaction is 3.0-9.0, stirring velocity is 400rpm-3000rpm, makes the throw out of cobalt salt continuously as precursor with complexing-homogeneous precipitation method;
(e). precursor is after filtration, after the vacuum-drying, send into tube furnace and carry out thermolysis obtain nano cobaltous oxide in the atmosphere of 300 ℃-550 ℃, inertia or little reducing gas;
(f). after nano cobaltous oxide adopted gas passivator and liquid passivator associating passivation passivation, with heat-sealing or vacuum-packed.
3. a kind of method for preparing spherical cobaltous oxide according to claim 1 and 2 is characterized in that the atmosphere of described inertia or little reducing gas is meant N
2, C0
2Or CO, N
2/ H
2
4. a kind of method for preparing spherical cobaltous oxide according to claim 1 and 2 is characterized in that described gas passivator is meant N
2Or CO
2, liquid passivator is meant alcohol, acetone, gasoline or oleic acid.
5. a kind of method for preparing spherical cobaltous oxide according to claim 3 is characterized in that described gas passivator is meant N
2Or CO
2, liquid passivator is meant alcohol, acetone, gasoline or oleic acid.
6. the preparation method of cobaltosic oxide for electric battery according to claim 1 and 2, it is characterized in that in complexing precipitation from homogeneous solution (PFHS) reaction process the control of DCS distributed control system is adopted in its described control presoma synthetic temperature of reaction, pH value in reaction and stirring velocity and cocurrent adding material control.
7. the preparation method of cobaltosic oxide for electric battery according to claim 3, it is characterized in that in complexing-precipitation from homogeneous solution (PFHS) reaction process the control of DCS distributed control system is adopted in its described control presoma synthetic temperature of reaction, pH value in reaction and stirring velocity and cocurrent adding material control.
8. the preparation method of cobaltosic oxide for electric battery according to claim 4, it is characterized in that in complexing-precipitation from homogeneous solution (PFHS) reaction process the control of DCS distributed control system is adopted in its described control presoma synthetic temperature of reaction, pH value in reaction and stirring velocity and cocurrent adding material control.
9. the preparation method of cobaltosic oxide for electric battery according to claim 5, it is characterized in that in complexing-precipitation from homogeneous solution (PFHS) reaction process the control of DCS distributed control system is adopted in its described control presoma synthetic temperature of reaction, pH value in reaction and stirring velocity and cocurrent adding material control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101564815A CN101182043B (en) | 2007-11-09 | 2007-11-09 | Method for preparing spherical cobaltous oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101564815A CN101182043B (en) | 2007-11-09 | 2007-11-09 | Method for preparing spherical cobaltous oxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101182043A true CN101182043A (en) | 2008-05-21 |
| CN101182043B CN101182043B (en) | 2011-03-30 |
Family
ID=39447488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101564815A Active CN101182043B (en) | 2007-11-09 | 2007-11-09 | Method for preparing spherical cobaltous oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101182043B (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332576A (en) * | 2011-10-20 | 2012-01-25 | 上海应用技术学院 | Chrysanthemum-shaped cobaltosic oxide (Co3O4) material and preparation method and application thereof |
| CN102381958A (en) * | 2011-09-22 | 2012-03-21 | 浙江华友钴业股份有限公司 | Ammonia circulative preparation method for cobaltous oxalate |
| CN102412397A (en) * | 2011-10-20 | 2012-04-11 | 上海应用技术学院 | Co3O4 nano lamellar material and preparation method and application thereof |
| CN102502889A (en) * | 2011-10-20 | 2012-06-20 | 上海应用技术学院 | Co3O4 microsphere flower-like material as well as preparation method and application thereof |
| CN103803663A (en) * | 2012-11-06 | 2014-05-21 | 宁波科博特钴镍有限公司 | Production method of spherical tricobalt tetroxide |
| CN104445442A (en) * | 2014-12-09 | 2015-03-25 | 英德佳纳金属科技有限公司 | Cobalt hydroxide with low chlorine/sulfur and large particle size and preparation method thereof |
| CN104787807A (en) * | 2015-05-06 | 2015-07-22 | 厦门大学 | Solvothermal preparation method of cobaltous oxide nanoparticles |
| CN105084429A (en) * | 2015-09-07 | 2015-11-25 | 无锡中经金属粉末有限公司 | Method for producing nanoscale cobalt (II) oxide |
| CN105152230A (en) * | 2015-09-07 | 2015-12-16 | 无锡中经金属粉末有限公司 | Process and equipment of preparing high-power-type cobalt oxide |
| CN106450496A (en) * | 2016-11-28 | 2017-02-22 | 东莞市联洲知识产权运营管理有限公司 | High-capacity lithium ion secondary battery preparation method |
| CN107572602A (en) * | 2017-09-14 | 2018-01-12 | 浙江大学 | A kind of method that solwution method prepares cobalt protoxide micron ball |
| CN108975415A (en) * | 2018-08-31 | 2018-12-11 | 肇庆市华师大光电产业研究院 | A kind of preparation method that cobalt protoxide is nanocrystalline and its cobalt protoxide of preparation are nanocrystalline |
| CN111559761A (en) * | 2020-04-27 | 2020-08-21 | 温州大学 | Synthesis method of ZIF-67 derived CoO |
| CN114380338A (en) * | 2022-01-25 | 2022-04-22 | 重庆邮电大学 | Preparation method of magnetic cobalt oxide mesoporous nanospheres, products and applications thereof |
| CN114988489A (en) * | 2022-05-30 | 2022-09-02 | 荆门市格林美新材料有限公司 | Cobaltous oxide and preparation method and application thereof |
| CN115354270A (en) * | 2022-08-16 | 2022-11-18 | 广东思泉热管理技术有限公司 | Soaking plate passivator and application thereof |
| CN116789184A (en) * | 2023-07-12 | 2023-09-22 | 科立鑫(珠海)新能源有限公司 | Environment-friendly process for producing cobaltous oxide |
-
2007
- 2007-11-09 CN CN2007101564815A patent/CN101182043B/en active Active
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381958A (en) * | 2011-09-22 | 2012-03-21 | 浙江华友钴业股份有限公司 | Ammonia circulative preparation method for cobaltous oxalate |
| CN102412397A (en) * | 2011-10-20 | 2012-04-11 | 上海应用技术学院 | Co3O4 nano lamellar material and preparation method and application thereof |
| CN102502889A (en) * | 2011-10-20 | 2012-06-20 | 上海应用技术学院 | Co3O4 microsphere flower-like material as well as preparation method and application thereof |
| CN102332576A (en) * | 2011-10-20 | 2012-01-25 | 上海应用技术学院 | Chrysanthemum-shaped cobaltosic oxide (Co3O4) material and preparation method and application thereof |
| CN103803663B (en) * | 2012-11-06 | 2015-09-23 | 宁波金和锂电材料有限公司 | A kind of production method of spherical cobaltic-cobaltous oxide |
| CN103803663A (en) * | 2012-11-06 | 2014-05-21 | 宁波科博特钴镍有限公司 | Production method of spherical tricobalt tetroxide |
| CN104445442B (en) * | 2014-12-09 | 2016-05-11 | 英德佳纳金属科技有限公司 | A kind of low chlorine/sulphur, large particle diameter cobalt hydroxide and preparation method thereof |
| CN104445442A (en) * | 2014-12-09 | 2015-03-25 | 英德佳纳金属科技有限公司 | Cobalt hydroxide with low chlorine/sulfur and large particle size and preparation method thereof |
| CN104787807A (en) * | 2015-05-06 | 2015-07-22 | 厦门大学 | Solvothermal preparation method of cobaltous oxide nanoparticles |
| CN105084429A (en) * | 2015-09-07 | 2015-11-25 | 无锡中经金属粉末有限公司 | Method for producing nanoscale cobalt (II) oxide |
| CN105152230A (en) * | 2015-09-07 | 2015-12-16 | 无锡中经金属粉末有限公司 | Process and equipment of preparing high-power-type cobalt oxide |
| CN105152230B (en) * | 2015-09-07 | 2017-01-18 | 无锡中经金属粉末有限公司 | Process and equipment of preparing high-power-type cobalt oxide |
| CN106450496A (en) * | 2016-11-28 | 2017-02-22 | 东莞市联洲知识产权运营管理有限公司 | High-capacity lithium ion secondary battery preparation method |
| CN107572602B (en) * | 2017-09-14 | 2019-10-11 | 浙江大学 | A kind of method that solwution method prepares cobalt protoxide micron ball |
| CN107572602A (en) * | 2017-09-14 | 2018-01-12 | 浙江大学 | A kind of method that solwution method prepares cobalt protoxide micron ball |
| CN108975415A (en) * | 2018-08-31 | 2018-12-11 | 肇庆市华师大光电产业研究院 | A kind of preparation method that cobalt protoxide is nanocrystalline and its cobalt protoxide of preparation are nanocrystalline |
| CN111559761A (en) * | 2020-04-27 | 2020-08-21 | 温州大学 | Synthesis method of ZIF-67 derived CoO |
| CN114380338A (en) * | 2022-01-25 | 2022-04-22 | 重庆邮电大学 | Preparation method of magnetic cobalt oxide mesoporous nanospheres, products and applications thereof |
| CN114380338B (en) * | 2022-01-25 | 2023-11-03 | 重庆邮电大学 | Preparation method of magnetic cobalt oxide mesoporous nanospheres, product and application thereof |
| CN114988489A (en) * | 2022-05-30 | 2022-09-02 | 荆门市格林美新材料有限公司 | Cobaltous oxide and preparation method and application thereof |
| CN114988489B (en) * | 2022-05-30 | 2023-11-21 | 荆门市格林美新材料有限公司 | Cobalt oxide and preparation method and application thereof |
| CN115354270A (en) * | 2022-08-16 | 2022-11-18 | 广东思泉热管理技术有限公司 | Soaking plate passivator and application thereof |
| CN116789184A (en) * | 2023-07-12 | 2023-09-22 | 科立鑫(珠海)新能源有限公司 | Environment-friendly process for producing cobaltous oxide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101182043B (en) | 2011-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101182043B (en) | Method for preparing spherical cobaltous oxide | |
| CN110235292B (en) | Prussian blue cathode material with high sodium content, preparation method and application thereof, and sodium-ion battery | |
| JP7376862B2 (en) | Wet synthesis method of NCMA high nickel quaternary precursor | |
| CN101376174B (en) | Method for preparing superfine spherical cobalt powder | |
| CN107265520B (en) | A kind of preparation method and product of spherical nickel cobalt manganese persursor material | |
| CN111682197B (en) | Single crystal type anion and cation co-doped nickel-magnesium binary cobalt-free precursor, positive electrode material and preparation method | |
| CN112582600B (en) | Preparation method of high-entropy single crystal battery positive electrode material and obtained product | |
| CN111600010B (en) | Preparation method of single crystal large particles of ternary material | |
| CN108862406A (en) | A kind of carbonate precursor and its preparation method and application | |
| CN109659555A (en) | Adulterate the nickel-cobalt-manganese ternary material and preparation method thereof of zirconium | |
| CN111153447B (en) | Grid-shaped porous precursor material, preparation method thereof and anode material | |
| CN104134786A (en) | Method for preparing small-particle size high-density spherical cobalt (II,III) oxide | |
| CN108654666B (en) | Preparation method of N, P-codoped three-dimensional Co nanoflower, obtained material and application | |
| CN113753963B (en) | Tin cobalt disulfide nano-particles and preparation method and application thereof | |
| CN106809871B (en) | A kind of preparation method of indium oxide nano powder | |
| NL2026949A (en) | Green and low-cost ternary material precursor, and preparation method and device thereof | |
| Ma et al. | Versatile construction of a hierarchical porous electrode and its application in electrochemical hydrogen production: a mini review | |
| CN108529666B (en) | Method for preparing lithium titanate from inorganic titanium source, product and application | |
| CN101759232B (en) | Porous manganese dioxide of nanofibre texture and preparation method thereof | |
| CN112758995A (en) | Ternary positive electrode precursor and preparation method and application thereof | |
| CN112850801A (en) | Preparation method of large-particle cobaltosic oxide | |
| CN112374551A (en) | Iron-manganese-containing layered transition metal oxide precursor material and preparation method and application thereof | |
| CN112608228B (en) | Lithium-rich manganese-based positive electrode precursor nickel-manganese oxalate material and preparation method thereof | |
| CN102332566A (en) | Low-sodium and low-potassium lithium manganate material for lithium ion battery anode and preparation method for lithium manganate material | |
| CN100363263C (en) | Process for preparing CdO nano powder of high qulity active cell 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 |