CN101301598B - Surface dewatering process method of inorganic powder material - Google Patents
Surface dewatering process method of inorganic powder material Download PDFInfo
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- CN101301598B CN101301598B CN2008100646846A CN200810064684A CN101301598B CN 101301598 B CN101301598 B CN 101301598B CN 2008100646846 A CN2008100646846 A CN 2008100646846A CN 200810064684 A CN200810064684 A CN 200810064684A CN 101301598 B CN101301598 B CN 101301598B
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- inorganic powder
- powder material
- process method
- dewatering process
- water
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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
Abstract
The present invention provides a hydrophobic treatment method of the inorganic powder material surface, which relates to a treatment method of inorganic powder material surface. The method of the present invention resolves the problem that the inorganic powder material absorbs water in atmosphere at normal temperature and pressure when in storage, conveyance and useage. The method comprises steps of: processing the inorganic powder material by a hydrophobic agent to obtain the wet powder, drying the wet powder; and then the hydrophobic treatment of the inorganic powder material surface is finished. The method of the present invention has simple technique and easy operation. Under the conditions of air temperature being at 25 degree C and relative moisture at 53%, the moisture absorption of the treated inorganic powder material can be reduced by 70% in comparison with that of the untreated powder. The present invention is applicable especially for hydrophobic treatment of lithium ion battery and electrode material.
Description
Technical field
The present invention relates to the processing method on a kind of inorganic powder material surface.
Background technology
Existing many electrodeless powder body materials store under the condition of the atmospheric environment of normal temperature and pressure or high humility, transportation and can absorb airborne moisture content when using, and the moisture content that is absorbed has promoted material to the CO in the environment again
2Absorption, can cause the electrodeless powder functional material of some easy deliquescence to lose efficacy; Be easy to absorb moisture and CO when particularly the electrode material of lithium ion battery is exposed in the atmospheric environment in the preparation process of storage, transportation and battery
2, cause material electrochemical performance (capacity and cycle performance) to descend, and in the charge and discharge process of battery, safety problem take place easily.If adopt that obturator stores, the increase of transportation cost.
Summary of the invention
The objective of the invention is under the condition of the atmospheric environment of normal temperature and pressure or high humility, to store in order to solve inorganic powder material, transportation and can absorb the problem of airborne moisture content when using; And provide a kind of inorganic powder material surperficial dewatering process method.
The step of inorganic powder material table dewatering process method of the present invention is following: obtain wet powder after with water-repelling agent inorganic powder material being handled; Then wet powder is dried under 80～150 ℃ of conditions; Promptly accomplish hydrophobic treatments to the inorganic powder material surface; Wherein water-repelling agent is a kind of or wherein several kinds mixing in butanols, amylalcohol, hexanol, enanthol, octanol, butyraldehyde, valeral, hexanal, enanthaldehyde, octanal, aldehyde C-9, butanone, pentanone, hexanone, heptanone, octanone, nonanone, ethyl acetate, methyl acetoacetate, tributyl phosphate, tetraethyl silane, the N-N-formyl morpholine N-, and water-repelling agent is handled the inorganic powder material method for soaking or fumigating.The particle diameter of inorganic powder material is 10
-8～10
-4M.Inorganic powder material is calcium carbonate, talcum powder, kaolin powder, aluminium silicate powder, wollastonite in powder or blanc fixe; Inorganic powder material can also be an anode material for lithium-ion batteries.Described anode material for lithium-ion batteries is nickel cobalt lithium aluminate, cobalt nickel LiMn2O4 or lithium nickel cobalt dioxide.Described nonanone is a butyl ketone.Oven dry again after can also filtering after with water-repelling agent inorganic powder material being soaked among the present invention.
Technology of the present invention is simple, be convenient to operation.25 ℃ and relative humidity is under 53% condition, and the hygroscopic capacity of the inorganic powder material after the present invention handles can reduce 70%.The inventive method has reduced the cost that inorganic powder material adopts obturator to store, transport and increase.Inorganic powder material among the present invention is connected through chemical bond, molecular separating force or hydrogen bond with water-repelling agent.In the existing document not about being 10 to particle diameter
-8～10
-4The m inorganic powder material carries out the relevant report of hydrophobic treatments.The present invention especially is suitable for and lithium ion battery and electrode material is carried out hydrophobic treatments.Because the electrode material of lithium ion battery is easy to absorb moisture and CO when in the preparation process of storage, transportation and battery, being exposed in the atmospheric environment
2, cause material electrochemical performance (capacity and cycle performance) to descend, and in the charge and discharge process of battery, safety problem take place easily.Lithium ion battery electrode material after the inventive method is handled, the chemical property of itself does not change; Just Saturated Moisture Content obviously reduces; Reduced the hygroscopic capacity in storage, the fortune process like this, and reduced battery and make the probability of causing danger in the process.
The specific embodiment
The specific embodiment one: the dewatering process method on inorganic powder material surface is realized by following step in this embodiment: obtain wet powder after with water-repelling agent inorganic powder material being handled; Then wet powder is dried under 80～150 ℃ of conditions; Promptly accomplish hydrophobic treatments to the inorganic powder material surface; Wherein water-repelling agent is a kind of or wherein several kinds mixing in butanols, amylalcohol, hexanol, enanthol, octanol, butyraldehyde, valeral, hexanal, enanthaldehyde, octanal, aldehyde C-9, butanone, pentanone, hexanone, heptanone, octanone, nonanone, ethyl acetate, methyl acetoacetate, tributyl phosphate, tetraethyl silane, the N-N-formyl morpholine N-, and water-repelling agent is handled the inorganic powder material method for soaking or fumigating.
When the water-repelling agent in this embodiment was composition, various water-repelling agents were pressed arbitrarily than combination.
The inorganic powder material that this embodiment method was handled and carry out the moisture absorption contrast experiment simultaneously without the inorganic powder material of hydrophobic treatments.By oversaturated magnesium nitrate solution humidity environment is provided in the moisture absorption contrast experiment process; Airtight transparent lucite box is as the humidity control room; Moisture absorption contrast experiment operating process is: the temperature and the relative humidity (RH) in control control room are respectively 25 ℃ and 53%, are that measurement is followed the trail of to it by unit with 24 hours, constantly write down weight change; Till its quality no longer increases (moisture absorption is saturated); The quality that calculates again through sample behind the sucting wet experiment increases percentage, and the used time of this process is the hydrophobic performance decision by the water absorption of handling the back sample, basically greater than a week.
Hydrophobic effect can be used computes
In the formula: S
0Expression without the powder of hydrophobic treatments (25 ℃, Saturated Moisture Content RH=53%);
S represent through hydrophobic treatments powder (25 ℃, Saturated Moisture Content RH=53%);
Δ S representes to compare after the hydrophobic treatments with before the hydrophobic treatments, the percentage that hygroscopic capacity reduces.
Through above-mentioned moisture absorption contrast experiment checking, the inorganic powder material after the processing is compared with the material of hydrophobic treatments not, and its saturated water adsorptive value significantly reduces.25 ℃ and relative humidity is under 53% condition, and the Saturated Moisture Content that adopts this embodiment to handle the back inorganic powder material can reduce 70%, and promptly hygroscopic capacity can reduce 70%.
The specific embodiment two: what this embodiment and the specific embodiment one were different is: the particle diameter of inorganic powder material is 10
-8～10
-4M.Other specific embodiment one is identical.
The specific embodiment three: what this embodiment and the specific embodiment one were different is: the particle diameter of inorganic powder material is 10
-7～10
-5M.Other specific embodiment one is identical.
The specific embodiment four: what this embodiment and the specific embodiment one were different is: the particle diameter of inorganic powder material is 10
-6M.Other specific embodiment one is identical.
The specific embodiment five: what this embodiment and the specific embodiment one were different is: inorganic powder material is calcium carbonate, talcum powder, kaolin powder, aluminium silicate powder, wollastonite in powder or blanc fixe.Other specific embodiment one is identical.
The specific embodiment six: what this embodiment and the specific embodiment one were different is: inorganic powder material is an anode material for lithium-ion batteries.Other specific embodiment one is identical.
The specific embodiment seven: what this embodiment and the specific embodiment six were different is: anode material for lithium-ion batteries is nickel cobalt lithium aluminate, cobalt nickel LiMn2O4 or lithium nickel cobalt dioxide.Other specific embodiment six phase together.
The specific embodiment eight: what this embodiment and the specific embodiment one were different is: aqua is nonanone, tetraethyl silane or N-N-formyl morpholine N-.Other specific embodiment one is identical.
The specific embodiment nine: what this embodiment was different with the specific embodiment one or eight is: nonanone is a butyl ketone.Other specific embodiment one or eight is identical.
The specific embodiment ten: what this embodiment and the specific embodiment one were different is: after with water-repelling agent inorganic powder material being soaked, and oven dry again after filtering earlier.Other is identical with the specific embodiment one.
The specific embodiment 11: what this embodiment and the specific embodiment one were different is: with water-repelling agent inorganic powder material is soaked 20～28h.Other is identical with the specific embodiment one.
The specific embodiment 12: what this embodiment and the specific embodiment one were different is: with water-repelling agent inorganic powder material is soaked 24h.Other is identical with the specific embodiment one.
The specific embodiment 13: what this embodiment and the specific embodiment one were different is: with water-repelling agent to the stifling 45～50h of inorganic powder material.Other is identical with the specific embodiment one.
The specific embodiment 14: what this embodiment and the specific embodiment one were different is: with water-repelling agent to the stifling 48h of inorganic powder material.Other is identical with the specific embodiment one.
The specific embodiment 15: what this embodiment and the specific embodiment one were different is: baking temperature is 100～140 ℃.Other is identical with the specific embodiment one.
The specific embodiment 16: what this embodiment and the specific embodiment one were different is: baking temperature is 120 ℃.Other is identical with the specific embodiment one.
The specific embodiment 17: what this embodiment and the specific embodiment one were different is: the time that the wet powder oven dry is needed is 24～36h.Other is identical with the specific embodiment one.
The specific embodiment 18: the dewatering process method on this embodiment inorganic powder material surface is realized by following step: with butyl ketone nickel cobalt lithium aluminate powder (anode material for lithium-ion batteries) is soaked 24h; Filter, then dry 30h under 120 ℃ of conditions; Promptly accomplish hydrophobic treatments to the inorganic powder material surface
Through experimental verification, the chemical property of the nickel cobalt lithium aluminate powder after this embodiment is handled does not change.Adopt the saturated water adsorptive value of the nickel cobalt lithium aluminate powder after the moisture absorption contrast experiment handles this embodiment in the specific embodiment one to estimate; At 25 ℃; Under the RH=53% condition, the nickel cobalt lithium aluminate powder Saturated Moisture Content after this embodiment is handled can reduce 70%; Be that hygroscopic capacity can reduce 70%.Saturated water adsorptive value reduces and has reduced its hygroscopic capacity in storage, fortune process, has reduced battery simultaneously and has made the probability of causing danger in the process.
Claims (7)
1. the dewatering process method on an inorganic powder material surface is characterized in that the step of inorganic powder material table dewatering process method is following: obtain wet powder after with water-repelling agent inorganic powder material being handled; Then wet powder is dried under 80～150 ℃ of conditions; Promptly accomplish hydrophobic treatments to the inorganic powder material surface; Wherein water-repelling agent is a kind of or wherein several kinds mixing in butanols, amylalcohol, hexanol, enanthol, octanol, butyraldehyde, valeral, hexanal, enanthaldehyde, octanal, aldehyde C-9, butanone, pentanone, hexanone, heptanone, octanone, nonanone, ethyl acetate, methyl acetoacetate, tributyl phosphate, tetraethyl silane, the N-N-formyl morpholine N-; Inorganic powder material is calcium carbonate, talcum powder, kaolin powder, aluminium silicate powder, wollastonite in powder or blanc fixe; Anode material for lithium-ion batteries; Wherein anode material for lithium-ion batteries is nickel cobalt lithium aluminate, cobalt nickel LiMn2O4 or lithium nickel cobalt dioxide, and water-repelling agent is handled the inorganic powder material method for soaking or fumigating.
2. the dewatering process method on a kind of inorganic powder material according to claim 1 surface, the particle diameter that it is characterized in that inorganic powder material is 10
-8～10
-4M.
3. the dewatering process method on a kind of inorganic powder material according to claim 1 surface, the particle diameter that it is characterized in that inorganic powder material is 10
-7～10
-5M.
4. the dewatering process method on a kind of inorganic powder material according to claim 1 surface, the particle diameter that it is characterized in that inorganic powder material is 10
-6M.
5. the dewatering process method on a kind of inorganic powder material according to claim 1 surface is characterized in that nonanone is a butyl ketone.
6. the dewatering process method on a kind of inorganic powder material according to claim 1 surface is characterized in that with water-repelling agent inorganic powder material being soaked 20～28h.
7. the dewatering process method on a kind of inorganic powder material according to claim 1 surface is characterized in that with water-repelling agent the stifling 45～50h of inorganic powder material.
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| CN101301598B true CN101301598B (en) | 2012-03-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101572308B (en) * | 2009-06-18 | 2012-10-10 | 深圳市贝特瑞新能源材料股份有限公司 | Method for improving combination property of lithium ion battery material |
| CN102604433B (en) * | 2012-02-14 | 2014-04-16 | 浙江大学 | Preparation method of aldehyde modified shell micro powder |
| CN102709591B (en) * | 2012-05-24 | 2015-06-17 | 宁德新能源科技有限公司 | Lithium ion secondary battery |
| CN107611424A (en) * | 2017-08-31 | 2018-01-19 | 龙能科技如皋市有限公司 | A kind of nickle cobalt lithium manganate composite wood and preparation method thereof |
| CN110204277A (en) * | 2019-06-04 | 2019-09-06 | 东方雨虹民用建材有限责任公司 | A kind of anti-caking glue for tile and preparation method thereof |
| CN110280314B (en) * | 2019-07-16 | 2021-07-23 | 中国科学院兰州化学物理研究所 | Method for improving water resistance and dust resistance of manganese-based low-temperature SCR catalyst |
| CN112436110B (en) * | 2019-08-24 | 2022-04-22 | 深圳格林德能源集团有限公司 | Hydrophobic high-nickel ternary cathode material and preparation method thereof |
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|---|---|---|---|---|
| WO2001085846A1 (en) * | 2000-05-08 | 2001-11-15 | Ondeo Nalco Company | Method and composition for dispersing hydrophobic particles in aqueous suspensions |
| CN1407030A (en) * | 2001-09-13 | 2003-04-02 | 舟山明日纳米材料有限公司 | Hydrophobic micro-size powder and its preparation |
| CN1462773A (en) * | 2002-05-31 | 2003-12-24 | 北京化工大学 | Surface treatment method for improving hydrophobicity of Nano particles of calcium carbonate |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001085846A1 (en) * | 2000-05-08 | 2001-11-15 | Ondeo Nalco Company | Method and composition for dispersing hydrophobic particles in aqueous suspensions |
| CN1407030A (en) * | 2001-09-13 | 2003-04-02 | 舟山明日纳米材料有限公司 | Hydrophobic micro-size powder and its preparation |
| CN1462773A (en) * | 2002-05-31 | 2003-12-24 | 北京化工大学 | Surface treatment method for improving hydrophobicity of Nano particles of calcium carbonate |
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