CN104064754A - Preparation method of lithium and manganese oxide - Google Patents
Preparation method of lithium and manganese oxide Download PDFInfo
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- CN104064754A CN104064754A CN201410315723.0A CN201410315723A CN104064754A CN 104064754 A CN104064754 A CN 104064754A CN 201410315723 A CN201410315723 A CN 201410315723A CN 104064754 A CN104064754 A CN 104064754A
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- manganese oxide
- lithium
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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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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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- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a preparation method of a lithium and manganese oxide. The preparation method comprises the following steps of (1) heatng water, adding lithium silicate, adjusting the PH of the solution through hydrochloric acid, adding a hydroxide of manganese to react, obtaining mixed slurry, standing and removing upper-layer water; (2) calcining the mixed slurry for 2 h-3 h under an oxygen-rich condition, and obtaining a crude compound; (3) after naturally cooling the crude compound, placing the crude compound into a ball mill, conducting ball milling, obtaining slurry, standing, and removing upper-layer water; (4) calcining the slurry for 1 h-2 h under an oxygen-rich condition, rapidly cooling the slurry to 300 DEG C-400 DEG C, keeping for 30 min-60 min, naturally cooling, and finally conducting dry ball milling on obtained calcine to obtain the lithium and manganese oxide. The preparation method is simple, no pollution is caused in a preparation process, energy consumption is low, and working conditions are good; sources of raw materials are widespread, and preparation cost is low; the lithium and manganese oxide prepared with the method is high in purity, good in uniformity, and good in cycling performance when being applied to batteries.
Description
Technical field
The present invention relates to a kind of preparation method of lithium manganese oxide, belong to compound preparing technical field.
Background technology
Lithium ion battery is a kind of advanced person's of 21st century green high-capacity environment-protecting type secondary cell, but now widely used lithium cobaltate cathode material is because cost is high and the outstanding problem such as poor safety performance can not meet IT industry and the requirement of electric automobile industry to battery performance of high speed development.Lithium manganese oxide is because of aboundresources, low price, and safety and environmental protection performance is good, is acknowledged as one of positive electrode of the most potential substituting cobalt acid lithium.
Tradition solid reaction process directly adopts lithium salts and manganese salt mixed calcining to prepare lithium manganese compound, but this method products therefrom particle is large and inhomogeneous, and stoichiometric proportion is difficult to be controlled, and reaction temperature is high, the time is long, cost is high, and easily causes the loss of lithium.
Summary of the invention
The present invention seeks to: the preparation method that a kind of lithium manganese oxide is provided.
Technical scheme of the present invention is:
A preparation method for lithium manganese oxide, comprises following step:
(1) heating water to 60-80 ℃, add lithium metasilicate, obtain colourless transparent liquid, is 8-9 with hydrochloric acid conditioning solution PH, the hydroxide that adds manganese, under the condition of rapid stirring, reaction 2-3h, obtain mixed slurry, by the standing 6-8h of mixed slurry, remove upper strata moisture;
(2) by the mixed slurry of removing after the moisture of upper strata, in temperature, be 300-400 ℃, under the condition of oxygen enrichment, calcine 2-3h, obtain compound crude product, described compound crude product D50 is 10-15 μ m, and its specific area is 0.05-0.15m
2/ g;
(3) after compound crude product is naturally cooling, be placed in ball mill ball milling, the weight ratio of ball, water and slurry is 6-8: 3-4: 1, and ball milling 2-3h obtains slurry, and standing 6-8h removes upper strata moisture;
(4) by the slurry of removing after the moisture of upper strata, in temperature, be 500-600 ℃, under the condition of oxygen enrichment, calcine 1-2h, be sharply cooled to 300-400 ℃, keep 30-60min, naturally cooling, finally the calcined material dry ball milling obtaining is obtained to lithium manganese oxide;
Wherein, the weight ratio of the hydroxide of lithium metasilicate and manganese is 1: 2.
The chemical formula of the hydroxide of described manganese is Mn (OH)
3.
The preparation method of described a kind of lithium manganese oxide, the percentage by weight of lithium metasilicate aqueous solution mesosilicic acid lithium is 10-14%.
The preparation method of described a kind of lithium manganese oxide, in step (1), mixing speed is 200-400 rev/min.
The layered lithium manganese oxide obtaining according to the preparation method of described a kind of lithium manganese oxide, the D50 of described lithium manganese oxide is 2-5 μ m, its specific area is 0.3-0.5m
2/ g, tap density is 1.2-2.0g/cm
3, interlamellar spacing is 20-25nm, its chemical formula is LiMnO
4.
Advantage of the present invention is:
1. preparation method is simple, hydroxide by lithium metasilicate and manganese first mixes under weak basic condition, through the method for calcining-ball milling-calcining, do not add any dispersant, additive again, can control the lithium manganese oxide that obtains having certain particle size and interlamellar spacing, both solved simple high temperature solid-state method products obtained therefrom particle size distribution, interlamellar spacing consistency is poor, solved again the not high problem of electrochemical process products obtained therefrom activity, preparation process is pollution-free, has reduced calcining heat, energy consumption is low, good operation conditions.
2. prepare required lithium metasilicate and the equal wide material sources of hydroxide of manganese, in preparing the process of mixed slurry, coordinate the adjusting for pH value, can control particle diameter, specific area and the tap density of product.
3. the high and good uniformity of the lithium manganese oxide purity for preparing; The D50 of the lithium manganese oxide preparing is 2-5 μ m, and its specific area is 0.3-0.5m
2/ g, tap density is 1.2-2.0g/cm
3, interlamellar spacing is 20-25nm, its chemical formula is LiMnO
4.Specific energy is 175-185Wh/Kg after testing, normal temperature circulation time, and 10 attenuation rates are 0.005-0.015%.
Embodiment
Embodiment 1
A preparation method for lithium manganese oxide, comprises following step:
(1) heating water to 80 ℃, add lithium metasilicate, obtain colourless transparent liquid, is 8-9 with hydrochloric acid conditioning solution PH, adds the hydroxide of manganese, and under the condition of rapid stirring, reaction 2h, obtains mixed slurry, by the standing 8h of mixed slurry, removes upper strata moisture;
(2) by the mixed slurry of removing after the moisture of upper strata, in temperature, be 400 ℃, under the condition of oxygen enrichment, calcine 2h, obtain compound crude product, described compound crude product D50 is 10 μ m, and its specific area is 0.05m
2/ g; ;
(3) after compound crude product is naturally cooling, be placed in ball mill ball milling, the weight ratio of ball, water and slurry is 6: 3: 1, and ball milling 2h obtains slurry, and standing 8h removes upper strata moisture;
(4) by the slurry of removing after the moisture of upper strata, in temperature, be 600 ℃, under the condition of oxygen enrichment, calcine 1h, be sharply cooled to 400 ℃, keep 30min, naturally cooling, finally the calcined material dry ball milling obtaining is obtained to lithium manganese oxide;
Wherein, the weight ratio of the hydroxide of lithium metasilicate and manganese is 1: 2.
The chemical formula of the hydroxide of described manganese is Mn (OH)
3.
The preparation method of described a kind of lithium manganese oxide, the percentage by weight of lithium metasilicate aqueous solution mesosilicic acid lithium is 10%.
The preparation method of described a kind of lithium manganese oxide, in step (1), mixing speed is 200 revs/min.
The D50 of the lithium manganese oxide preparing is 5 μ m, and its specific area is 0.5m
2/ g, tap density is 1.2g/cm
3, interlamellar spacing is 25nm, its chemical formula is LiMnO
4.Specific energy is 175Wh/Kg after testing, normal temperature circulation time, and 10 times attenuation rate is 0.015%.
Comparative example 1
Comparative example 1 is identical with embodiment 1 condition, and what while being ball milling, take is dry ball milling, and the D50 of the lithium manganese oxide finally obtaining is 15 μ m, and its specific area is 0.1m
2/ g, tap density is 1.0g/cm
3, interlamellar spacing is 18nm, its chemical formula is LiMnO
4.
Embodiment 2
A preparation method for lithium manganese oxide, comprises following step:
(1) heating water to 60 ℃, add lithium metasilicate, obtain colourless transparent liquid, is 8-9 with hydrochloric acid conditioning solution PH, adds the hydroxide of manganese, and under the condition of rapid stirring, reaction 3h, obtains mixed slurry, by the standing 6h of mixed slurry, removes upper strata moisture;
(2) by the mixed slurry of removing after the moisture of upper strata, in temperature, be 300 ℃, under the condition of oxygen enrichment, calcine 3h, obtain compound crude product, described compound crude product D50 is 15 μ m, and its specific area is 0.15m
2/ g; ;
(3) after compound crude product is naturally cooling, be placed in ball mill ball milling, the weight ratio of ball, water and slurry is 8: 4: 1, and ball milling 3h obtains slurry, and standing 6h removes upper strata moisture;
(4) by the slurry of removing after the moisture of upper strata, in temperature, be 500 ℃, under the condition of oxygen enrichment, calcine 2h, be sharply cooled to 300 ℃, keep 60min, naturally cooling, finally the calcined material dry ball milling obtaining is obtained to lithium manganese oxide;
Wherein, the weight ratio of the hydroxide of lithium metasilicate and manganese is 1: 2.
The chemical formula of the hydroxide of described manganese is Mn (OH)
3.
The preparation method of described a kind of lithium manganese oxide, the percentage by weight of lithium metasilicate aqueous solution mesosilicic acid lithium is 14%.
The preparation method of described a kind of lithium manganese oxide, in step (1), mixing speed is 400 revs/min.
The D50 of the lithium manganese oxide preparing is 2 μ m, and its specific area is 0.3m
2/ g, tap density is 2.0g/cm
3, interlamellar spacing is 20nm, its chemical formula is LiMnO
4.Specific energy is 185Wh/Kg after testing, normal temperature circulation time, and 10 times attenuation rate is 0.005%.
Comparative example 2
Comparative example 2 is identical with embodiment 2 conditions, and just calcining is under the condition of air, and the D50 of the lithium manganese oxide finally obtaining is 2 μ m, and its specific area is 0.3m
2/ g, tap density is 2.0g/cm
3, interlamellar spacing is 10nm, its chemical formula is LiMnO
2.
Embodiment 3
A preparation method for lithium manganese oxide, comprises following step:
(1) heating water to 65 ℃, add lithium metasilicate, obtain colourless transparent liquid, is 8-9 with hydrochloric acid conditioning solution PH, adds the hydroxide of manganese, and under the condition of rapid stirring, reaction 2h, obtains mixed slurry, by the standing 6h of mixed slurry, removes upper strata moisture;
(2) by the mixed slurry of removing after the moisture of upper strata, in temperature, be 400 ℃, under the condition of oxygen enrichment, calcine 2h, obtain compound crude product, described compound crude product D50 is 12 μ m, and its specific area is 0.12m
2/ g;
(3) after compound crude product is naturally cooling, be placed in ball mill ball milling, the weight ratio of ball, water and slurry is 8: 3: 1, and ball milling 3h obtains slurry, and standing 6h removes upper strata moisture;
(4) by the slurry of removing after the moisture of upper strata, in temperature, be 600 ℃, under the condition of oxygen enrichment, calcine 1-2h, be sharply cooled to 400 ℃, keep 60min, naturally cooling, finally the calcined material dry ball milling obtaining is obtained to lithium manganese oxide;
Wherein, the weight ratio of the hydroxide of lithium metasilicate and manganese is 1: 2.
The chemical formula of the hydroxide of described manganese is Mn (OH)
3.
The preparation method of described a kind of lithium manganese oxide, the percentage by weight of lithium metasilicate aqueous solution mesosilicic acid lithium is 12%.
The preparation method of described a kind of lithium manganese oxide, in step (1), mixing speed is 300 revs/min.
The D50 of the lithium manganese oxide preparing is 4 μ m, and its specific area is 0.4m
2/ g, tap density is 1.8g/cm
3, interlamellar spacing is 22nm, its chemical formula is LiMnO
4.Specific energy is 180Wh/Kg after testing, normal temperature circulation time, and 10 attenuation rates are 0.005-0.01%.
Comparative example 3
Comparative example 3 is identical with embodiment 3 conditions, has just saved the step that regulates PH with hydrochloric acid, and the D50 of the lithium manganese oxide finally obtaining is 10 μ m, and its specific area is 0.05m
2/ g, tap density is 2.5g/cm
3, interlamellar spacing is 20nm, its chemical formula is LiMnO
4.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. a preparation method for lithium manganese oxide, is characterized in that, comprises following step:
(1) heating water to 60-80 ℃, add lithium metasilicate, obtain colourless transparent liquid, is 8-9 with hydrochloric acid conditioning solution PH, the hydroxide that adds manganese, under the condition of rapid stirring, reaction 2-3h, obtain mixed slurry, by the standing 6-8h of mixed slurry, remove upper strata moisture;
(2) by the mixed slurry of removing after the moisture of upper strata, in temperature, be 300-400 ℃, under the condition of oxygen enrichment, calcine 2-3h, obtain compound crude product, described compound crude product D50 is 10-15 μ m, and its specific area is 0.05-0.15m
2/ g;
(3) after compound crude product is naturally cooling, be placed in ball mill ball milling, the weight ratio of ball, water and slurry is 6-8: 3-4: 1, and ball milling 2-3h obtains slurry, and standing 6-8h removes upper strata moisture;
(4) by the slurry of removing after the moisture of upper strata, in temperature, be 500-600 ℃, under the condition of oxygen enrichment, calcine 1-2h, be sharply cooled to 300-400 ℃, keep 30-60min, naturally cooling, finally the calcined material dry ball milling obtaining is obtained to lithium manganese oxide;
Wherein, the weight ratio of the hydroxide of lithium metasilicate and manganese is 1: 2.
2. the preparation method of a kind of lithium manganese oxide according to claim 1, is characterized in that, the chemical formula of the hydroxide of described manganese is Mn (OH)
3.
3. the preparation method of a kind of lithium manganese oxide according to claim 1, is characterized in that, the percentage by weight of lithium metasilicate aqueous solution mesosilicic acid lithium is 10-14%.
4. the preparation method of a kind of lithium manganese oxide according to claim 1, is characterized in that, in step (1), mixing speed is 200-400 rev/min.
5. the layered lithium manganese oxide that the preparation method of a kind of lithium manganese oxide according to claim 1 obtains, the D50 of described lithium manganese oxide is 2-5 μ m, its specific area is 0.3-0.5m
2/ g, tap density is 1.2-2.0g/cm
3, interlamellar spacing is 20-25nm.
6. a kind of lithium manganese oxide according to claim 5, is characterized in that, its chemical formula is LiMnO
4.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1221225A (en) * | 1998-10-09 | 1999-06-30 | 清华大学 | Method for preparing lithium ion battery active material superfines with spray drying method |
| US20050095507A1 (en) * | 2003-10-29 | 2005-05-05 | Kwang-Chun Kim | Lithium battery having effective performance |
| CN1805179A (en) * | 2005-01-13 | 2006-07-19 | 新疆大学 | Preparation method of positive electrode material of lithium ion cell in spinel structure LiCoxMn2-XO4 (0<=X<=0.2) |
| CN101161592A (en) * | 2006-10-12 | 2008-04-16 | 比亚迪股份有限公司 | A method for preparing sphericity manganic acid lithium cell anode active material |
| CN101459237A (en) * | 2007-12-10 | 2009-06-17 | 深圳市比克电池有限公司 | Battery cathode slurry, preparation and battery produced by the cathode slurry |
| CN102473897A (en) * | 2009-08-14 | 2012-05-23 | 吉列公司 | Alkaline primary cells with anode comprising manganese |
| CN102709586A (en) * | 2012-01-12 | 2012-10-03 | 宁德新能源科技有限公司 | Titanium acid lithium ion battery |
| JP2012527735A (en) * | 2009-05-19 | 2012-11-08 | ナノシス・インク． | Nanostructured materials for battery applications |
| CN103022485A (en) * | 2012-12-19 | 2013-04-03 | 苏州大学 | Lithium manganese phosphate-clad lithium manganate lithium secondary battery anode material and preparation method thereof |
-
2014
- 2014-06-27 CN CN201410315723.0A patent/CN104064754B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1221225A (en) * | 1998-10-09 | 1999-06-30 | 清华大学 | Method for preparing lithium ion battery active material superfines with spray drying method |
| US20050095507A1 (en) * | 2003-10-29 | 2005-05-05 | Kwang-Chun Kim | Lithium battery having effective performance |
| CN1805179A (en) * | 2005-01-13 | 2006-07-19 | 新疆大学 | Preparation method of positive electrode material of lithium ion cell in spinel structure LiCoxMn2-XO4 (0<=X<=0.2) |
| CN101161592A (en) * | 2006-10-12 | 2008-04-16 | 比亚迪股份有限公司 | A method for preparing sphericity manganic acid lithium cell anode active material |
| CN101459237A (en) * | 2007-12-10 | 2009-06-17 | 深圳市比克电池有限公司 | Battery cathode slurry, preparation and battery produced by the cathode slurry |
| JP2012527735A (en) * | 2009-05-19 | 2012-11-08 | ナノシス・インク． | Nanostructured materials for battery applications |
| CN102473897A (en) * | 2009-08-14 | 2012-05-23 | 吉列公司 | Alkaline primary cells with anode comprising manganese |
| CN102709586A (en) * | 2012-01-12 | 2012-10-03 | 宁德新能源科技有限公司 | Titanium acid lithium ion battery |
| CN103022485A (en) * | 2012-12-19 | 2013-04-03 | 苏州大学 | Lithium manganese phosphate-clad lithium manganate lithium secondary battery anode material and preparation method thereof |
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