CN110970608A - Lithium iron battery material and preparation method thereof - Google Patents
Lithium iron battery material and preparation method thereof Download PDFInfo
- Publication number
- CN110970608A CN110970608A CN201911314017.3A CN201911314017A CN110970608A CN 110970608 A CN110970608 A CN 110970608A CN 201911314017 A CN201911314017 A CN 201911314017A CN 110970608 A CN110970608 A CN 110970608A
- Authority
- CN
- China
- Prior art keywords
- lithium iron
- preparation
- battery material
- iron battery
- grinding
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 34
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000000227 grinding Methods 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 238000005245 sintering Methods 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 229910000398 iron phosphate Inorganic materials 0.000 claims abstract description 8
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims abstract description 8
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229910052808 lithium carbonate Inorganic materials 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000012216 screening Methods 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- H01M4/362—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
- H01M4/04—Processes of manufacture in general
-
- 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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- 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 lithium iron battery material and a preparation method thereof, wherein the lithium iron battery material comprises the following components: iron phosphate and lithium carbonate, wherein the preparation method comprises the following steps: mixing, grinding, filtering, sintering and crushing. According to the lithium iron battery material and the preparation method thereof, the mixture after grinding is filtered by the filter, and the product which is not fully ground is filtered and returned to the grinding step for re-grinding, so that the lithium iron battery material is fully ground, the power of the lithium iron battery is improved, the operation is performed in a small-amplitude long-time crushing mode, and the uniformity and the comprehensiveness of material crushing are maintained.
Description
Technical Field
The invention relates to the technical field of lithium iron battery materials, in particular to a lithium iron battery material and a preparation method thereof.
Background
Lithium ion batteries are a new generation of secondary batteries which are rapidly developed in the 90 th of the 20 th century and are widely used for small-sized portable electronic communication products and electric vehicles, the manufacture of battery materials is a core link in the lithium battery industry, and compared with traditional storage batteries, lithium ion batteries have higher energy and stronger discharge capacity, lithium iron batteries are a class of batteries in the lithium battery family, and the anode materials are mainly lithium iron phosphate materials, also referred to as lithium iron batteries for short.
The existing lithium iron battery material has the problem that the grinding is insufficient, so that the power of the lithium iron battery is influenced.
Disclosure of Invention
The invention aims to provide a lithium iron battery material and a preparation method thereof, which aim to solve the general problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a lithium iron battery material and a preparation method thereof are disclosed, which comprises the following components: iron phosphate and lithium carbonate, wherein the preparation method comprises the following steps: mixing, grinding, filtering, sintering and crushing.
Preferably, the iron phosphate and the lithium carbonate are uniformly mixed by mixing, a double-helix mixing and lifting device is adopted, and the mixing time is 15 minutes.
Preferably, the milling is performed by milling the mixture using a plurality of screen mills.
Preferably, the filtering is to filter the mixture after grinding by using a filter, and the product which is not sufficiently ground is filtered out and then returned to the grinding step for re-grinding until the standard is met.
Preferably, the sintering is carried out on the ground mixture, the sintering temperature is 200 DEG and 800 DEG, and the sintering time is 1-2 h.
Preferably, the crushing is performed on the sintered and molded material, and the operation is performed in a small-amplitude and long-time crushing mode, so as to form the lithium iron battery material.
Compared with the prior art, the invention has the following beneficial effects: the lithium iron battery material and the preparation method thereof filter the mixture after grinding by adopting the filter, and return the grinding step to the product which is filtered out and not fully ground for re-grinding, thereby ensuring that the lithium iron battery material is fully ground, further improving the power of the lithium iron battery, operating in a small-amplitude long-time crushing mode, keeping the uniformity and the comprehensiveness of the material crushing, and ensuring the uniformity degree of the mixing between the lithium iron battery material and the lithium iron battery material by adopting double-helix mixing and lifting equipment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a lithium iron battery material and a preparation method thereof are disclosed, which comprises the following components: the preparation method of the iron phosphate and the lithium carbonate comprises the following steps: mixing, grinding, filtering, sintering and crushing, wherein iron phosphate and lithium carbonate are uniformly mixed by mixing, double-screw mixing and lifting equipment is adopted, the mixing time is 15 minutes, the double-screw mixing and lifting equipment is adopted, the mixing uniformity degree between the iron phosphate and the lithium carbonate is ensured, the grinding is to grind the mixture by utilizing multiple times of screening and grinding, the filtering is to filter the ground mixture by utilizing a filter, the filtered and insufficiently ground product is returned to the grinding step to be ground again until the product meets the standard, so that the sufficient grinding of the lithium iron battery material is ensured, the power of the lithium iron battery is further improved, the sintering is to sinter the ground mixture, the sintering temperature is 800 DEG, the sintering time is 1-2 hours, the crushing treatment is carried out on the sinter-molded material by crushing in a small-amplitude long-time crushing mode, thereby forming the lithium iron battery material and keeping the uniform and comprehensive crushing of the material.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The lithium iron battery material and the preparation method thereof are characterized by comprising the following components: iron phosphate and lithium carbonate, wherein the preparation method comprises the following steps: mixing, grinding, filtering, sintering and crushing.
2. The lithium iron battery material and the preparation method thereof according to claim 1, characterized in that: the iron phosphate and the lithium carbonate are uniformly mixed by mixing, double-helix mixing and lifting equipment is adopted, and the mixing time is 15 minutes.
3. The lithium iron battery material and the preparation method thereof according to claim 1, characterized in that: the grinding is to grind the mixture by using multiple screening grindings.
4. The lithium iron battery material and the preparation method thereof according to claim 1, characterized in that: and the filtering is to filter the mixture after grinding by using a filter, and to filter out the insufficiently ground product, returning to the grinding step for re-grinding until the standard is met.
5. The lithium iron battery material and the preparation method thereof according to claim 1, characterized in that: the sintering is to sinter the ground mixture, the sintering temperature is 200 DEG-800 DEG, and the sintering time is 1-2 h.
6. The lithium iron battery material and the preparation method thereof according to claim 1, characterized in that: and crushing the sintered and molded material, and operating in a small-amplitude long-time crushing mode to further form the lithium iron battery material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314017.3A CN110970608A (en) | 2019-12-19 | 2019-12-19 | Lithium iron battery material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314017.3A CN110970608A (en) | 2019-12-19 | 2019-12-19 | Lithium iron battery material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110970608A true CN110970608A (en) | 2020-04-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911314017.3A Pending CN110970608A (en) | 2019-12-19 | 2019-12-19 | Lithium iron battery material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110970608A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901903A (en) * | 2010-08-13 | 2010-12-01 | 张宝 | Preparation method of high activity lithium ion battery anode material lithium iron phosphate |
| CN103633326A (en) * | 2013-12-18 | 2014-03-12 | 益阳生力材料科技有限公司 | Production method of lithium iron phosphate |
| CN104701499A (en) * | 2013-12-06 | 2015-06-10 | 天津赫维科技有限公司 | Preparation method of lithium iron phosphate/C composite material with high specific surface area |
| CN109455687A (en) * | 2018-10-26 | 2019-03-12 | 四川朗晟新能源科技有限公司 | A kind of industrialization preparation process of lithium iron phosphate positive material |
-
2019
- 2019-12-19 CN CN201911314017.3A patent/CN110970608A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901903A (en) * | 2010-08-13 | 2010-12-01 | 张宝 | Preparation method of high activity lithium ion battery anode material lithium iron phosphate |
| CN104701499A (en) * | 2013-12-06 | 2015-06-10 | 天津赫维科技有限公司 | Preparation method of lithium iron phosphate/C composite material with high specific surface area |
| CN103633326A (en) * | 2013-12-18 | 2014-03-12 | 益阳生力材料科技有限公司 | Production method of lithium iron phosphate |
| CN109455687A (en) * | 2018-10-26 | 2019-03-12 | 四川朗晟新能源科技有限公司 | A kind of industrialization preparation process of lithium iron phosphate positive material |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200407 |
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| RJ01 | Rejection of invention patent application after publication |