CN105932232A - Lithium manganate composite material and preparation method thereof - Google Patents
Lithium manganate composite material and preparation method thereof Download PDFInfo
- Publication number
- CN105932232A CN105932232A CN201610283424.2A CN201610283424A CN105932232A CN 105932232 A CN105932232 A CN 105932232A CN 201610283424 A CN201610283424 A CN 201610283424A CN 105932232 A CN105932232 A CN 105932232A
- Authority
- CN
- China
- Prior art keywords
- lithium
- preparation
- magnesium
- composite
- limn2o4 composite
- 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
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a lithium manganate composite material and a preparation method thereof. The preparation method has the following advantages: 1) a natural lithium-bearing brine resource is comprehensively utilized as a lithium source, the usage amount of a refined lithium salt is reduced, and the material synthesis cost is substantially reduced; 2) the lithium source and a manganate source are uniformly distributed on an atomic level by an ion exchange method, a lattice matrix is easy to rearrange through short-range diffusion, the energy consumption is low during the synthesis process, a relatively low synthesis temperature and relatively short synthesis time are obtained, the grain distribution is uniform, and the polarization is reduced; 3) the constituent contents of lithium and magnesium are reasonably controlled by adjusting a pH value, lithium magnesium-doped type lithium manganate is prepared, the average valence state of manganate during the charge-discharge process is improved, a Jahn-Teller effect is effectively inhibited, and the cycle stability is improved; and 4) from the aspect of economic and environmental protection, the preparation method has more advantages than other schemes, and particularly, the preparation method has practical significance to extract lithium from a liquid-state lithium-bearing brine resource with a high magnesium-lithium ratio to synthesize a composite battery material.
Description
Technical field
The present invention relates to field of lithium ion battery, particularly relate to a kind of LiMn2O4 composite and preparation method thereof.
Background technology
LiMn2O4 is one of more promising lithium ion anode material, compare the positive electrodes such as cobalt acid lithium, LiMn2O4 has the advantage such as aboundresources, low cost, pollution-free, safety good, good rate capability, it is preferable power battery anode material, but its poor cycle performance and electrochemical stability greatly limit it and extensively apply.Surface modify and doping can its chemical property effectively modified, surface modification can suppress dissolving and the electrolyte decomposition of manganese effectively；Doping can effectively suppress the Jahn-Teller effect in charge and discharge process.Being modified on surface and combine the chemical property that can improve material undoubtedly further with doping, the shortcoming of LiMn2O4 cycle performance difference there has been the biggest change.
At present, the Industrialized synthesis method of lithium manganate having spinel structure, still based on high temperature solid-state method, mainly with EMD and lithium carbonate as raw material, coordinates corresponding additive, through batch mixing, burns till, the step such as later stage process and produce.Solid state reaction is by diffusion process control, and the too high not only energy consumption of synthesis temperature is high, and the volatilization easily causing lithium is run off, and for making up the rich lithium component design of many employings in this loss solid phase synthesis, such as excess 5%wt, causes the raising of cost of material；Additionally temperature is too high causes reuniting seriously, and particle size distribution is uneven, granularity is big, internal resistance is big, polarization is big.And in the synthesis technique of routine lithium source use be LITHIUM BATTERY lithium salts, expensive.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of LiMn2O4 composite and preparation method thereof, aiming to solve the problem that and there is production cost height, reunion in existing synthesis technique seriously, particle size distribution is uneven, granularity is big, internal resistance is big, polarize big problem.
Technical scheme is as follows:
A kind of preparation method of LiMn2O4 composite, wherein, including step:
A, first by λ-MnO2Immerse after pickle processes, filter, be then added in high Mg/Li ratio natural bittern lithium, make λ-MnO2By the lithium in ion-exchange absorption attached high Mg/Li ratio natural bittern lithium, the magnesium ion in Sync enrichment high Mg/Li ratio natural bittern lithium, then filter, wash, dry；
B, then adding lithium salts, allotment lithium is with magnesium mole: manganese mol ratio is 1:2, obtains Li finally by solid-phase sintering1-xMgx Mn2O4LiMn2O4 composite, wherein, x≤0.05.
The preparation method of described LiMn2O4 composite, wherein, in step A, described high Mg/Li ratio natural bittern lithium is to regulate the high Mg/Li ratio natural bittern lithium after pH value by microcosmic salt acid buffer.
The preparation method of described LiMn2O4 composite, wherein, in step A, described diluted acid is the one in dilute hydrochloric acid, dust technology, dilute sulfuric acid, diluted hydrofluoric acid.
The preparation method of described LiMn2O4 composite, wherein, in step B, described lithium salts is one or more in lithium carbonate, Lithium hydrate, lithium nitrate.
The preparation method of described LiMn2O4 composite, wherein, in step B, the sintering temperature of sintering is 680 DEG C, and sintering time is 12h.
The preparation method of described LiMn2O4 composite, wherein, in step B, x=0.02.
A kind of LiMn2O4 composite, wherein, uses the preparation method of arbitrary described LiMn2O4 composite to be prepared from.
Beneficial effect: at a low price, preparation process energy consumption is low for raw material sources of the present invention, and epigranular, polarization resistance is little, has more preferable high rate performance and cycle performance.
Detailed description of the invention
The present invention provides a kind of LiMn2O4 composite and preparation method thereof, and for making the purpose of the present invention, technical scheme and effect clearer, clear and definite, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The present invention provides the preparation method of a kind of LiMn2O4 composite, wherein, including step:
A, first by λ-MnO2Immerse after pickle processes, filter, be then added in high Mg/Li ratio natural bittern lithium, make λ-MnO2By the lithium in ion-exchange absorption attached high Mg/Li ratio natural bittern lithium, the magnesium ion in Sync enrichment high Mg/Li ratio natural bittern lithium, then filter, wash, dry, obtain powder body；
B, then adding lithium salts in powder body, allotment lithium is with magnesium mole: manganese mol ratio is 1:2, obtains Li finally by solid-phase sintering1-xMgx Mn2O4LiMn2O4 composite, wherein, x≤0.05.
The present invention utilizes natural high Mg/Li ratio natural bittern lithium resource as lithium source, reduces the usage amount of refined lithium salt, and materials synthesis cost reduces.At a low price, preparation process energy consumption is low for raw material sources of the present invention, and epigranular, in-stiu coating after-polarization internal resistance is little, has more preferable high rate performance and cycle performance.
Preferably, in step A, described high Mg/Li ratio natural bittern lithium is to regulate the high Mg/Li ratio natural bittern lithium after pH value by microcosmic salt acid buffer.The present invention regulates pH value by microcosmic salt acid buffer, can prepare lithium position mix the LiMn2O4 composite of magnesium with the constituent content of conservative control magnesium, improves the average valence of manganese in charge and discharge process, and effectively suppression Jahn-Teller effect, improves cyclical stability.It is highly preferred that described high Mg/Li ratio natural bittern lithium is to regulate the high Mg/Li ratio natural bittern lithium after pH value, to improve cyclical stability further by disodium hydrogen phosphate-sodium dihydrogen phosphate.
Preferably, in step A, described diluted acid can be but be not limited to the one in dilute hydrochloric acid, dust technology, dilute sulfuric acid, diluted hydrofluoric acid.
Preferably, Li1-xMgxFePO4In, x=0.02, to improve the performance of LiMn2O4 composite further.Preferably, the sintering temperature of sintering is 680 DEG C, and sintering time is 12h, sinters under this condition, and the LiMn2O4 composite prepared has higher cycle performance.
Preferably, lithium salts of the present invention can be but be not limited to one or more in lithium carbonate, Lithium hydrate, lithium nitrate.
The preparation method of LiMn2O4 composite is also described in detail by the present invention, specifically includes step as follows:
Step S1: by a certain amount of λ-MnO2Powder body is placed in the dilute acid soln of 0.01-0.1M process 6-8h, filters, standby；
Step S2: it is 6.0-8.0 that high Mg/Li ratio natural bittern lithium is adjusted to pH through 0.02-0.1M disodium hydrogen phosphate-phosphate sodium dihydrogen buffer solution, the λ-MnO after processing in S12Powder body is placed in lidded container, injects the high Mg/Li ratio natural bittern lithium of deployed pH value, gets togather lid, shakes 4-12h；
Step S3: filter, wash, 100-150 DEG C process 2-6h and dry, test lithium, content of magnesium；
Step S4: according to the lithium in S3, content of magnesium, weigh lithium salts, makes the mole of lithium and magnesium: manganese mol ratio is 1:2, it is thus achieved that compound；
Step S5: by the compound ball milling 2-4h of S4, mix homogeneously；
Step S6: by the compound after mix homogeneously in S5 in Muffle furnace, 550-700 DEG C of sintering processes 10-24h, obtain Li1-xMgxMn2O4(x≤0.05).
The above-mentioned preparation method of the present invention has the advantage that
1) comprehensive utilization high Mg/Li ratio natural bittern lithium resource is as lithium source, reduces the usage amount of refined lithium salt, and materials synthesis cost is greatly reduced.
2) ion exchange makes lithium source, manganese source be uniformly distributed in atomic level, is easily realized the rearrangement of lattice matrix by short-range diffusion, and building-up process energy consumption is low, shows as relatively low synthesis temperature, shorter generated time；Even particle size distribution, reduces polarization.
3) by allotment pH value conservative control lithium, the constituent content of magnesium, preparing lithium position and mix magnesium types LiMn2O4, improve the average valence of manganese in charge and discharge process, effectively suppression Jahn-Teller effect, improves cyclical stability.
4) consider there is bigger superiority than other schemes from economy and environmental conservation, from high Mg/Li ratio liquid salt lithium resource, particularly carry lithium synthesis composite battery material there is practical significance.
The present invention also provides for a kind of LiMn2O4 composite, wherein, uses the preparation method of arbitrary described LiMn2O4 composite to be prepared from.LiMn2O4 composite epigranular of the present invention, polarization resistance is little, has more preferable high rate performance and cycle performance.
Below by specific embodiment, the present invention is described in detail.
Embodiment 1
Taking 1L and contain the high Mg/Li ratio natural bittern lithium that lithium amount is 1100mg/L, wherein magnesium lithium mass ratio is 45.32, and being adjusted to pH through 0.02M disodium hydrogen phosphate-phosphate sodium dihydrogen buffer solution is 6.0.Weigh 174g λ-MnO2Powder body is placed in the dilute hydrochloric acid solution of 0.01M process 6h, filters and is placed in lidded container, inject the high Mg/Li ratio natural bittern lithium of deployed pH value, gets togather lid, shakes 10h, filter, wash, 100 DEG C dry 6h after, record λ-MnO2The exchange rate of lithium ion be 34.7mg/g, the exchange rate of magnesium ion is 1.38mg/g.According to the lithium recorded, magnesium amount, supplementing 4.72g lithium carbonate so that lithium and the mole of magnesium: manganese mol ratio is 1:2, after ball milling 3h mixing, in Muffle furnace, 550 DEG C of sintering 24h, obtain doping type lithium manganate composite L i0.99Mg0.01Mn2O4.LiMn2O4 composite D50 is 4.2 m, and particle size distribution span is 1.7.
Being coated on aluminium foil after above-mentioned LiMn2O4 composite, conductive carbon, binding agent being mixed according to the mass ratio of 94:3:3 and prepare pole piece, with lithium for electrode assembling half-cell, electrolyte is the LiFPF of 1mol/L6/DC+EC+DMC.Electric performance test result is: 0.1C capacity 119mAh/g first, capacity 97.5mAh/g after circulating 100 times, and capability retention is 81.9%；1C capacity 102 mAh/g；2C capacity 95.6mAh/g.
Embodiment 2
Taking 1L and contain the high Mg/Li ratio natural bittern lithium that lithium amount is 500mg/L, wherein magnesium lithium mass ratio is 36, and being adjusted to pH through 0.05M disodium hydrogen phosphate-phosphate sodium dihydrogen buffer solution is 8.0.Weigh 174g λ-MnO2Powder body is placed in the dilution heat of sulfuric acid of 0.05 process 6h, filters and is placed in lidded container, inject the high Mg/Li ratio natural bittern lithium of deployed pH value, gets togather lid, shakes 12h, filter, wash, 120 DEG C dry 4h after, record λ-MnO2It is 30.9mg/g to lithium ion exchanged rate, is 2.07mg/g to magnesium ion exchange rate.According to containing lithium, magnesium amount, supplementing 5.21g Lithium hydrate so that lithium and the mole of magnesium: manganese mol ratio is 1:2, after ball milling 2h mixing, in Muffle furnace, 700 DEG C of sintering 10h, obtain doping type lithium manganate composite L i0.985Mg0.015Mn2O4.LiMn2O4 composite D50 is 4.8 m, and particle size distribution span is 2.4.
Being coated on aluminium foil after above-mentioned LiMn2O4 composite, conductive carbon, binding agent being mixed according to the mass ratio of 94:3:3 and prepare pole piece, with lithium for electrode assembling half-cell, electrolyte is the LiFPF of 1mol/L6/DC+EC+DMC.Electric performance test result is: 0.1C capacity 116.4mAh/g first, capacity 98.4mAh/g after circulating 100 times, and capability retention is 84.5%；1C capacity 103.4 mAh/g.
Embodiment 3
Taking 1L and contain the high Mg/Li ratio natural bittern lithium that lithium amount is 1500mg/L, wherein magnesium lithium mass ratio is 51.3, and being adjusted to pH through 0.05M disodium hydrogen phosphate-phosphate sodium dihydrogen buffer solution is 7.5.Weigh 174g λ-MnO2Powder body is placed in the dilute nitric acid solution of 0.05 process 8h, filters and is placed in lidded container, inject the high Mg/Li ratio natural bittern lithium of deployed pH value, gets togather lid, shakes 4h, filter, wash, 150 DEG C dry 2h after, λ-MnO2It is 29.8mg/g to lithium ion exchanged rate, is 2.76mg/g to magnesium ion exchange rate.According to containing lithium, magnesium amount, supplementing 16.52g lithium nitrate so that lithium and the mole of magnesium: manganese mol ratio is 1:2, after ball milling 4h mixing, in Muffle furnace, 680 DEG C of sintering 12h, obtain doping type lithium manganate composite L i0.98Mg0.02Mn2O4.LiMn2O4 composite D50 is 3.7 m, and particle size distribution span is 2.1.
Being coated on aluminium foil after above-mentioned LiMn2O4 composite, conductive carbon, binding agent being mixed according to the mass ratio of 94:3:3 and prepare pole piece, with lithium for electrode assembling half-cell, electrolyte is the LiFPF of 1mol/L6/DC+EC+DMC.Electric performance test result is: 0.1C capacity 109.8mAh/g first, capacity 102.8mAh/g after circulating 100 times, and capability retention is 93.6%；1C capacity 103.1mAh/g.
Embodiment 4
Taking 1L and contain the high Mg/Li ratio natural bittern lithium that lithium amount is 1500mg/L, wherein magnesium lithium mass ratio is 51.3, and being adjusted to pH through 0. 1M disodium hydrogen phosphate-phosphate sodium dihydrogen buffer solution is 8.0.Weigh 174g λ-MnO2 powder body and be placed in the dilute hydrofluoric acid solution of 0.1M process 6h, filter and be placed in lidded container, inject the high Mg/Li ratio natural bittern lithium of deployed pH value, get togather lid, shake 4h, filter, wash, 150 DEG C dry 2h after, λ-MnO2It is 33.8mg/g to lithium ion exchanged rate, is 6.90mg/g to magnesium ion exchange rate.According to containing lithium, magnesium amount, supplementing 7.58g lithium nitrate so that lithium and the mole of magnesium: manganese mol ratio is 1:2, after ball milling 3h mixing, in Muffle furnace, 600 DEG C of sintering 15h, obtain doping type lithium manganate composite L i0.95Mg0.05Mn2O4.LiMn2O4 composite D50 is 3.2 m, and particle size distribution span is 1.8.
Being coated on aluminium foil after above-mentioned LiMn2O4 composite, conductive carbon, binding agent being mixed according to the mass ratio of 94:3:3 and prepare pole piece, with lithium for electrode assembling half-cell, electrolyte is the LiFPF of 1mol/L6/DC+EC+DMC.Electric performance test result is: 0.1C capacity 97.5mAh/g first, capacity 92.4mAh/g after circulating 100 times, and capability retention is 94.8%；1C capacity 93mAh/g.
Comparative example 1
According to lithium: magnesium: manganese mol ratio is that 0.98:0.02:2 weighs 174g λ-MnO respectively2Powder, 36.26g lithium carbonate, 2.96g magnesium nitrate, ball milling mixes, and in Muffle furnace, 800 DEG C of sintering 20h, obtain the doping type lithium manganate composite L i of solid phase synthesis0.98Mg0.02Mn2O4.LiMn2O4 composite D50 is 10.3 m, and particle size distribution span is 4.7.
Being coated on aluminium foil after above-mentioned LiMn2O4 composite, conductive carbon, binding agent being mixed according to the mass ratio of 94:3:3 and prepare pole piece, with lithium for electrode assembling half-cell, electrolyte is the LiFPF of 1mol/L6/DC+EC+DMC.Electric performance test result is: 0.1C capacity 101.7mAh/g first, capacity 82.7mAh/g after circulating 100 times, and capability retention is 81.3%；1C capacity 93.2 mAh/g.
In sum, a kind of LiMn2O4 composite and preparation method thereof that the present invention provides, preparation method of the present invention has the advantage that 1) comprehensively utilize natural salt lithium resource as lithium source, reduce the usage amount of refined lithium salt, materials synthesis cost is greatly reduced；2) ion exchange makes lithium source, manganese source be uniformly distributed in atomic level, is easily realized the rearrangement of lattice matrix by short-range diffusion, and building-up process energy consumption is low, shows as relatively low synthesis temperature, shorter generated time；Even particle size distribution, reduces polarization.3) by allotment pH value conservative control lithium, the constituent content of magnesium, preparing lithium position and mix magnesium types LiMn2O4, improve the average valence of manganese in charge and discharge process, effectively suppression Jahn-Teller effect, improves cyclical stability.4) consider there is bigger superiority than other schemes from economy and environmental conservation, from high Mg/Li ratio liquid salt lithium resource, particularly carry lithium synthesis composite battery material there is practical significance.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (7)
1. the preparation method of a LiMn2O4 composite, it is characterised in that include step:
A, first by λ-MnO2Immerse after pickle processes, filter, be then added in high Mg/Li ratio natural bittern lithium, make λ-MnO2By the lithium in ion-exchange absorption attached high Mg/Li ratio natural bittern lithium, the magnesium ion in Sync enrichment high Mg/Li ratio natural bittern lithium, then filter, wash, dry；
B, then adding lithium salts, allotment lithium is with magnesium mole: manganese mol ratio is 1:2, obtains Li finally by solid-phase sintering1-xMgx
Mn2O4LiMn2O4 composite, wherein, x≤0.05.
The preparation method of LiMn2O4 composite the most according to claim 1, it is characterised in that in step A, described high Mg/Li ratio natural bittern lithium is to regulate the high Mg/Li ratio natural bittern lithium after pH value by microcosmic salt acid buffer.
The preparation method of LiMn2O4 composite the most according to claim 1, it is characterised in that in step A, described diluted acid is the one in dilute hydrochloric acid, dust technology, dilute sulfuric acid, diluted hydrofluoric acid.
The preparation method of LiMn2O4 composite the most according to claim 1, it is characterised in that in step B, described lithium salts is one or more in lithium carbonate, Lithium hydrate, lithium nitrate.
The preparation method of LiMn2O4 composite the most according to claim 1, it is characterised in that in step B, the sintering temperature of sintering is 680 DEG C, and sintering time is 12h.
The preparation method of LiMn2O4 composite the most according to claim 1, it is characterised in that in step B, x=0.02.
7. a LiMn2O4 composite, it is characterised in that use the preparation method of the LiMn2O4 composite as described in claim 1 ~ 6 is arbitrary to be prepared from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610283424.2A CN105932232B (en) | 2016-04-28 | 2016-04-28 | A kind of LiMn2O4 composite material and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610283424.2A CN105932232B (en) | 2016-04-28 | 2016-04-28 | A kind of LiMn2O4 composite material and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105932232A true CN105932232A (en) | 2016-09-07 |
| CN105932232B CN105932232B (en) | 2019-02-01 |
Family
ID=56836787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610283424.2A Active CN105932232B (en) | 2016-04-28 | 2016-04-28 | A kind of LiMn2O4 composite material and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105932232B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111082057A (en) * | 2019-12-03 | 2020-04-28 | 松山湖材料实验室 | Lithium ion battery slurry pH regulator and slurry thereof, preparation method and application |
| CN113401944A (en) * | 2021-06-18 | 2021-09-17 | 华中师范大学 | λ-MnO2Nanorod electrode, preparation method and application of nanorod electrode in extraction of lithium in brine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070190421A1 (en) * | 2006-02-13 | 2007-08-16 | Sony Corporation | Cathode active material and non-aqueous elecrolyte secondary battery |
| CN102049238A (en) * | 2010-11-19 | 2011-05-11 | 中南大学 | Ion sieve for selectively extracting lithium and application thereof |
| CN105506310A (en) * | 2016-01-07 | 2016-04-20 | 李震祺 | Method for extracting lithium from lithium-containing brine |
-
2016
- 2016-04-28 CN CN201610283424.2A patent/CN105932232B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070190421A1 (en) * | 2006-02-13 | 2007-08-16 | Sony Corporation | Cathode active material and non-aqueous elecrolyte secondary battery |
| CN102049238A (en) * | 2010-11-19 | 2011-05-11 | 中南大学 | Ion sieve for selectively extracting lithium and application thereof |
| CN105506310A (en) * | 2016-01-07 | 2016-04-20 | 李震祺 | Method for extracting lithium from lithium-containing brine |
Non-Patent Citations (2)
| Title |
|---|
| 姚经文等: "尖晶石型Li1-xMgxMn2O4正极材料的制备和性质", 《材料导报》 * |
| 董茜等: "从盐湖卤水中提取锂的吸附技术", 《盐业与化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111082057A (en) * | 2019-12-03 | 2020-04-28 | 松山湖材料实验室 | Lithium ion battery slurry pH regulator and slurry thereof, preparation method and application |
| CN113401944A (en) * | 2021-06-18 | 2021-09-17 | 华中师范大学 | λ-MnO2Nanorod electrode, preparation method and application of nanorod electrode in extraction of lithium in brine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105932232B (en) | 2019-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103715424B (en) | A kind of nucleocapsid structure positive electrode and preparation method thereof | |
| CN1305148C (en) | Method for preparing high-density spherical lithium iron phosphate and lithium iron manganese phosphate | |
| CN1305147C (en) | Method for preparing high-density spherical ferric lithium phosphate as anode material of lithium-ion battery | |
| CN100448772C (en) | High density ultrafine composite ferric lithium phosphate anode material and preparation method | |
| CN103928672B (en) | A kind of positive electrode active material for lithium ion battery and preparation method thereof | |
| CN103956485B (en) | Lithium iron phosphate electrode material of a kind of three-dimensional hierarchical structure and preparation method thereof | |
| CN101159328A (en) | LiFePO4/C nano composite positive pole material and preparation method thereof | |
| CN101237043A (en) | Method for making ferrous lithium phosphate/carbon compound material of high active disorderly ferric phosphate | |
| CN103441276B (en) | Preparation method of carbon-coated porous lithium iron phosphate powder | |
| CN102738458A (en) | Surface modification method of lithium-rich cathode material | |
| CN103825024B (en) | A kind of battery-grade iron phosphate and preparation method thereof | |
| CN107834050A (en) | A kind of lithium-enriched cathodic material of lithium ion battery and its improved method | |
| CN105185954A (en) | LiAlO2 coated LiNi1-xCoxO2 lithium-ion battery positive electrode material and preparation method thereof | |
| CN108899531A (en) | A kind of preparation method of Phosphate coating nickel cobalt aluminium tertiary cathode material | |
| CN113651303B (en) | Preparation method of nano flaky ferric phosphate and LiFePO prepared by using same 4 C positive electrode active material | |
| CN102249297A (en) | Method for preparing lithium titanate powder | |
| CN104779385A (en) | High-specific capacity lithium ion battery cathode material and preparation method thereof | |
| CN106784677A (en) | A kind of preparation of lithium-enriched cathodic material of lithium ion battery and improved method | |
| CN114695862A (en) | Fluorine-aluminum co-doped lithium cobaltate cathode material and preparation method thereof | |
| CN103956456A (en) | Halogen anion doped lithium-rich positive electrode material as well as preparation method and application of positive electrode material | |
| CN102583579B (en) | Method for modifying rich lithium cobalt lithium manganite cathode material of lithium ion battery | |
| CN104009221B (en) | Method for preparing positive electrode material rich in lithium via sol-gel self-propagating combustion method | |
| CN105932232B (en) | A kind of LiMn2O4 composite material and preparation method | |
| CN101759172A (en) | Microwave sintering method for preparing high-performance iron phosphate lithium | |
| CN102115067B (en) | Preparation method of spherical lithium iron phosphate with good conductive network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190703 Granted publication date: 20190201 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220703 Granted publication date: 20190201 |
|
| PD01 | Discharge of preservation of patent |