CN101237042A - Method for making positive material positive ferric phosphate of lithium battery - Google Patents
Method for making positive material positive ferric phosphate of lithium battery Download PDFInfo
- Publication number
- CN101237042A CN101237042A CNA2008100492655A CN200810049265A CN101237042A CN 101237042 A CN101237042 A CN 101237042A CN A2008100492655 A CNA2008100492655 A CN A2008100492655A CN 200810049265 A CN200810049265 A CN 200810049265A CN 101237042 A CN101237042 A CN 101237042A
- Authority
- CN
- China
- Prior art keywords
- solution
- ferric
- portions
- lithium battery
- hydrogen peroxide
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 21
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 title claims description 33
- 229910000399 iron(III) phosphate Inorganic materials 0.000 title claims description 33
- 239000000463 material Substances 0.000 title claims description 21
- 239000005955 Ferric phosphate Substances 0.000 title claims description 12
- 229940032958 ferric phosphate Drugs 0.000 title claims description 12
- 238000000034 method Methods 0.000 title abstract description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 40
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 27
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 26
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 24
- 238000002360 preparation method Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 15
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 12
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 238000009413 insulation Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- 239000010405 anode material Substances 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000010532 solid phase synthesis reaction Methods 0.000 abstract description 3
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 abstract description 2
- 235000011007 phosphoric acid Nutrition 0.000 abstract 7
- 239000000243 solution Substances 0.000 description 23
- 230000000694 effects Effects 0.000 description 7
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 5
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 5
- 238000005119 centrifugation Methods 0.000 description 5
- 229910017053 inorganic salt Inorganic materials 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 238000010792 warming Methods 0.000 description 5
- 229910052493 LiFePO4 Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The present invention discloses a preparation method for ferric orthophosphoric acid which is lithium battery anode material, using 100 portions of ferrous sulfate heptahydrate, 41.8-48.8 portions of phosphoric acid, 21.8-38.5 portions of hydrogen peroxide or 6.36-10.0 portions of sodium chlorate, 12.0-12.5 portions of sodium hydroxide or 15.0-18.0 portions of sodium carbonate and 500-1000 portions of water for preparation. The ferrous sulfate heptahydrate, the phosphoric acid and the water are compounded into solution in a reaction vessel; the hydrogen peroxide or the sodium chlorate is added into the solution; the temperature of the solution is 50-55 DEG C, and the sodium hydroxide or the sodium carbonate is added into the solution under the condition of stirring; then the solution temperature is increased to be between 85 DEG C and 95 DEG C; the temperature is kept for 5-15 hours, and in the meantime, the solution is led into a swirler to be separated till the sulfate radical content in products is less than 0.2 percent; the solution is cooled to be at 50 DEG C for carrying out the solid-liquid separation of the products and liquid; the particle diameter of obtained ferric orthophosphoric acid is 1-2 mu m; the specific surface area of the ferric orthophosphoric acid is 48-55.5m2/g; the tap density of the ferric orthophosphoric acid is greater than 1.6g/cm3. When the ferric orthophosphoric acid prepared with the method is used as raw material for preparing lithium iron phosphate via solid phase synthesis, the lithium battery anode material with excellent performance can be obtained.
Description
Technical field
The present invention relates to lithium battery material, especially relate to the preparation method of positive material positive ferric phosphate of lithium battery.
Background technology
The exploitation of clean energy resource is one of key areas of the primary development in the whole world with building, and battery is the important media of these new forms of energy of rational and efficient use.Lithium ion battery has obtained swift and violent development in the light current industry, and the research and development of dynamic lithium battery reaches its maturity, and the development of electric automobile (EV) will bring revolutionary variation to the improvement of people's environment.The key technology of electric automobile manufacturing is a battery problems, studies show that lithium battery is the first-selected battery of electric powered motor, and the key technology of preparation dynamic lithium battery then is battery material, especially LiFePO 4 of anode material.
The preparation of LiFePO4 is at present adopted with the ferric orthophosphate more and is carried out solid phase synthesis for the predecessor raw material.Because in the high-temperature reaction process of preparation LiFePO4, the diffusion of ion is a slow process, so the activity of ferric orthophosphate has material impact to reaction, particularly prepared in batches.The ferric orthophosphate distribution of particles of using existing production method to produce is wide, agglomeration is more serious between particle, cause surface activity lower, be used to prepare lithium cell anode material of lithium iron phosphate, the secondary cell specific capacity that makes is less, and unstable product quality has directly limited the scope of application of lithium battery.
Summary of the invention
The object of the invention is to provide a kind of distribution of particles narrow, and particle diameter is little, is uniformly dispersed, the preparation method who is used for positive material positive ferric phosphate of lithium battery that reactivity is high.
For achieving the above object, the present invention can take following technical proposals:
The preparation method who is used for positive material positive ferric phosphate of lithium battery of the present invention is prepared from by major ingredient ferrous sulfate heptahydrate, phosphoric acid, hydrogen peroxide or sodium chlorate, NaOH or sodium carbonate and auxiliary material water:
The weight portion proportioning of a, reactant is:
Ferrous sulfate heptahydrate: 100;
Phosphoric acid: 41.8-48.8;
Hydrogen peroxide: 21.8-38.5 or sodium chlorate: 6.36-10.0;
NaOH: 12.0-12.5 or sodium carbonate: 15.0-18.0;
Water: 500-1000;
B, step:
The first step, in reactor, ferrous sulfate heptahydrate, phosphoric acid, water are mixed with solution; Add hydrogen peroxide or sodium chlorate then in described solution, control solution temperature simultaneously between 50 ℃-55 ℃, stirring condition adds NaOH or sodium carbonate down, and reaction solution is highly acid;
Second goes on foot, first step gained solution is warmed up between 85 ℃-95 ℃, be incubated 5-15 hour, in insulation time, introduces solution and is separated in the product sulfate radical content in the swirler less than 0.2%, be cooled to 50 ℃ of Separation of Solid and Liquid of carrying out product and liquid then, separated products is drying to obtain ferric orthophosphate; The particle diameter of gained ferric orthophosphate is 1-2 μ m, and specific area is 48-55.5m
2/ g; Tap density is greater than 1.6g/cm
3
Described phosphoric acid concentration is 85%; Described hydrogen peroxide concentration is 28%.
The ferric orthophosphate average grain diameter that the invention has the advantages that preparation is 1-2 μ m, and specific area is 48-55.5m/g.Observe under the high power electron microscope, product is the sphere of rough surface, gauffer, has improved the activity of ferric orthophosphate greatly.Ferric orthophosphate with this method preparation is that raw material prepares LiFePO4 through solid phase synthesis, the anode material for lithium-ion batteries that available can be good, and the secondary cell specific capacity that makes with this positive electrode is greater than 130mAh/g, and tap density is greater than 1.6g/cm
3, improved the performance of lithium battery greatly, expanded the scope of application of ferric orthophosphate.
Embodiment
Embodiment 1:
The preparation method who is used for positive material positive ferric phosphate of lithium battery of the present invention, carry out according to following step:
At 1m
3Enamel reaction still in add 150kg water, 27.5kg ferrous sulfate heptahydrate, make the solid dissolving under stirring, add 12.5kg phosphoric acid, adding 9kg concentration is 28% hydrogen peroxide in when 1h, make the ferrous iron in the solution be converted into ferric iron fully, adjusting solution temperature is 55 ℃, adding concentration is 10% sodium carbonate liquor 47kg under stirring, flow velocity is 10L/h, be warming up to 95 ℃ of insulation 6h then, will separate soluble inorganic salt in 6 grades of swirlers of solution introducing in the time of insulation, product forms the particulate of spheroidal at swirler high speed eddy flow simultaneously; Be separated in the product sulfate radical content less than after 0.2%, be cooled to 50 ℃ product and liquid carried out the solid-liquid centrifugation, the separated products drying is handled and is promptly got ferric orthophosphate; Gained ferric orthophosphate product particle diameter is 1-2 μ m, and specific area is 55.5m
2/ g; Tap density is greater than 1.6g/cm
3
Embodiment 2:
The preparation method who is used for positive material positive ferric phosphate of lithium battery of the present invention, carry out according to following step:
At 10m
3Enamel reaction still in add 3000kg water, the 570kg ferrous sulfate heptahydrate, make the solid dissolving under stirring, add 250kg phosphoric acid then, adding 185kg concentration is 28% hydrogen peroxide in when 1h, make the ferrous iron in the solution be converted into ferric iron fully, adjusting solution temperature is 50 ℃, adding concentration is 10% sodium carbonate liquor 950kg under stirring, flow velocity is 200L/h, be warming up to 85 ℃ of insulation 15h, will separate soluble inorganic salt in 6 grades of swirlers of solution introducing in the time of insulation, product forms the particulate of spheroidal at swirler high speed eddy flow simultaneously; Be separated in the product sulfate radical content less than after 0.2%, be cooled to 50 ℃ product and liquid carried out the solid-liquid centrifugation, the separated products drying handle high activity material ferric orthophosphate; Gained ferric orthophosphate product particle diameter is 1-2 μ m, and specific area is 51.60m
2/ g; Tap density is greater than 1.6g/cm
3
Embodiment 3:
The preparation method who is used for positive material positive ferric phosphate of lithium battery of the present invention, carry out according to following step:
At 10m
3Enamel reaction still in add 3000kg water, the 570kg ferrous sulfate heptahydrate, make the solid dissolving under stirring, add 250kg phosphoric acid then, add the aqueous solution that contains 40kg sodium chlorate in when 1h, make the ferrous iron in the solution be converted into ferric iron fully, adjusting solution temperature is 50 ℃, adding concentration is 10% sodium carbonate liquor 950kg under stirring, flow velocity is 200L/h, be warming up to 90 ℃ of insulation 8h then, will separate soluble inorganic salt in 6 grades of swirlers of solution introducing in the time of insulation, product forms the particulate of spheroidal at swirler high speed eddy flow simultaneously; Be separated in the product sulfate radical content less than after 0.2%, be cooled to 50 ℃ product and liquid carried out the solid-liquid centrifugation, the separated products drying handle high activity material ferric orthophosphate; Gained ferric orthophosphate product particle diameter is 1-2 μ m, and specific area is 49.2m
2/ g; Tap density is greater than 1.6g/cm
3
Embodiment 4:
The preparation method who is used for positive material positive ferric phosphate of lithium battery of the present invention, carry out according to following step:
At 10m
3Enamel reaction still in add 3000kg water, the 570kg ferrous sulfate heptahydrate, make the solid dissolving under stirring, add 250kg phosphoric acid, add the 185kg hydrogen peroxide in when 1h, make the ferrous iron in the solution be converted into ferric iron fully, adjusting solution temperature is 52 ℃, adding concentration is 10% sodium hydroxide solution 704kg under stirring, flow velocity is 200L/h, be warming up to 93 ℃ of insulation 10h then, will separate soluble inorganic salt in 6 grades of swirlers of solution introducing in the time of insulation, product forms the particulate of spheroidal at swirler high speed eddy flow simultaneously; Be separated in the product sulfate radical content less than after 0.2%, be cooled to 50 ℃ product and liquid carried out the solid-liquid centrifugation, the separated products drying handle high activity material ferric orthophosphate; Gained ferric orthophosphate product particle diameter is 1-2 μ m, and specific area is 48.50m
2/ g; Tap density is greater than 1.6g/cm
3
Embodiment 5:
The preparation method who is used for positive material positive ferric phosphate of lithium battery of the present invention carries out according to following step: at 10m
3Enamel reaction still in add 3000kg water, the 570kg ferrous sulfate heptahydrate, make the solid dissolving under stirring, add 250kg phosphoric acid, add the aqueous solution that contains 40kg sodium chlorate in when 1h, make the ferrous iron in the solution be converted into ferric iron fully, adjusting solution temperature is 50 ℃, adding concentration is 10% sodium carbonate liquor 950kg under stirring, and flow velocity is 200L/h, and the pH value that makes solution is between 2-3; Be warming up to 90 ℃ of insulation 13h then, will separate soluble inorganic salt in 6 grades of swirlers of solution introducing in the time of insulation, product forms the particulate of spheroidal at swirler high speed eddy flow simultaneously; Be separated in the product sulfate radical content less than after 0.2%, be cooled to 50 ℃ product and liquid carried out the solid-liquid centrifugation, the separated products drying handle high activity material ferric orthophosphate; Gained ferric orthophosphate product particle diameter is 1-2 μ m, and specific area is 52.60m
2/ g; Tap density is greater than 1.6g/cm
3
Claims (2)
1, a kind of preparation method who is used for positive material positive ferric phosphate of lithium battery is characterized in that: it is prepared from by major ingredient ferrous sulfate heptahydrate, phosphoric acid, hydrogen peroxide or sodium chlorate, NaOH or sodium carbonate and auxiliary material water:
The weight portion proportioning of a, reactant is:
Ferrous sulfate heptahydrate: 100;
Phosphoric acid: 41.8-48.8;
Hydrogen peroxide: 21.8-38.5 or sodium chlorate: 6.36-10.0;
NaOH: 12.0-12.5 or sodium carbonate: 15.0-18.0;
Water: 500-1000;
B, step:
The first step, in reactor, ferrous sulfate heptahydrate, phosphoric acid, water are mixed with solution; Add hydrogen peroxide or sodium chlorate then in described solution, control solution temperature simultaneously between 50 ℃-55 ℃, stirring condition adds NaOH or sodium carbonate down, and reaction solution is highly acid;
Second goes on foot, first step gained solution is warmed up between 85 ℃-95 ℃, be incubated 5-15 hour, in insulation time, introduces solution and is separated in the product sulfate radical content in the swirler less than 0.2%, be cooled to 50 ℃ of Separation of Solid and Liquid of carrying out product and liquid then, separated products is drying to obtain ferric orthophosphate; The particle diameter of gained ferric orthophosphate is 1-2 μ m, and specific area is 48-55.5m
2/ g; Tap density is greater than 1.6g/cm
3
2, according to the described preparation method who is used for positive material positive ferric phosphate of lithium battery of claim 1, it is characterized in that: described phosphoric acid concentration is 85%; Described hydrogen peroxide concentration is 28%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810049265A CN100595949C (en) | 2008-02-26 | 2008-02-26 | Method for making positive material positive ferric phosphate of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810049265A CN100595949C (en) | 2008-02-26 | 2008-02-26 | Method for making positive material positive ferric phosphate of lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101237042A true CN101237042A (en) | 2008-08-06 |
| CN100595949C CN100595949C (en) | 2010-03-24 |
Family
ID=39920481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810049265A Expired - Fee Related CN100595949C (en) | 2008-02-26 | 2008-02-26 | Method for making positive material positive ferric phosphate of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100595949C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030323A (en) * | 2010-11-30 | 2011-04-27 | 湖北兴发化工集团股份有限公司 | Preparation method of iron phosphate |
| CN102333725A (en) * | 2009-02-26 | 2012-01-25 | 化学制造布敦海姆两合公司 | The preparation of Orthophosphoric acid Ferrum |
| CN102583293A (en) * | 2012-02-09 | 2012-07-18 | 昆明川金诺化工股份有限公司 | Preparation method of cell grade ferric orthophosphate |
| US20120237425A1 (en) * | 2009-09-09 | 2012-09-20 | Takahisa Nishio | Ferric phosphate hydrate particles and process for producing the same, olivine type lithium iron phosphate particles and process for producing the same, and non-aqueous electrolyte secondary battery |
| CN103208627A (en) * | 2013-02-22 | 2013-07-17 | 贵州省开阳安达磷化工有限公司 | Ferric phosphate material and manufacturing method thereof |
| CN106517128A (en) * | 2016-11-08 | 2017-03-22 | 河南省净寰新能源科技有限公司 | Low-cost cell-grade ferric phosphate micro powder preparation method |
| CN107337189A (en) * | 2017-08-23 | 2017-11-10 | 江西艾德纳米科技有限公司 | The method of ferric phosphate continuous production system and continuous production ferric phosphate |
| CN107910547A (en) * | 2017-11-30 | 2018-04-13 | 中能东道集团有限公司 | A kind of anode material for lithium-ion batteries of height ratio capacity and preparation method thereof |
| WO2022227669A1 (en) * | 2021-04-30 | 2022-11-03 | 广东邦普循环科技有限公司 | Iron phosphate precursor and preparation method therefor and application thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299369C (en) * | 2005-01-06 | 2007-02-07 | 清华大学 | Method for preparing high-density spherical lithium iron phosphate |
| CN1974411A (en) * | 2006-12-19 | 2007-06-06 | 中南大学 | Process of producing lithium iron phosphate precursor with ferrous sulfate as side product of titanium white production |
-
2008
- 2008-02-26 CN CN200810049265A patent/CN100595949C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102333725A (en) * | 2009-02-26 | 2012-01-25 | 化学制造布敦海姆两合公司 | The preparation of Orthophosphoric acid Ferrum |
| CN102333725B (en) * | 2009-02-26 | 2014-04-09 | 化学制造布敦海姆两合公司 | Production of iron orthophosphate |
| US20120237425A1 (en) * | 2009-09-09 | 2012-09-20 | Takahisa Nishio | Ferric phosphate hydrate particles and process for producing the same, olivine type lithium iron phosphate particles and process for producing the same, and non-aqueous electrolyte secondary battery |
| CN102030323A (en) * | 2010-11-30 | 2011-04-27 | 湖北兴发化工集团股份有限公司 | Preparation method of iron phosphate |
| CN102030323B (en) * | 2010-11-30 | 2012-11-28 | 湖北兴发化工集团股份有限公司 | Preparation method of iron phosphate |
| CN102583293B (en) * | 2012-02-09 | 2014-01-01 | 昆明川金诺化工股份有限公司 | Preparation method of cell grade ferric orthophosphate |
| CN102583293A (en) * | 2012-02-09 | 2012-07-18 | 昆明川金诺化工股份有限公司 | Preparation method of cell grade ferric orthophosphate |
| CN103208627A (en) * | 2013-02-22 | 2013-07-17 | 贵州省开阳安达磷化工有限公司 | Ferric phosphate material and manufacturing method thereof |
| CN103208627B (en) * | 2013-02-22 | 2015-11-25 | 贵州安达科技能源股份有限公司 | A kind of ferric phosphate material and preparation method thereof |
| CN106517128A (en) * | 2016-11-08 | 2017-03-22 | 河南省净寰新能源科技有限公司 | Low-cost cell-grade ferric phosphate micro powder preparation method |
| CN107337189A (en) * | 2017-08-23 | 2017-11-10 | 江西艾德纳米科技有限公司 | The method of ferric phosphate continuous production system and continuous production ferric phosphate |
| CN107337189B (en) * | 2017-08-23 | 2019-09-20 | 江西艾德纳米科技有限公司 | The method of ferric phosphate continuous production system and continuous production ferric phosphate |
| CN107910547A (en) * | 2017-11-30 | 2018-04-13 | 中能东道集团有限公司 | A kind of anode material for lithium-ion batteries of height ratio capacity and preparation method thereof |
| CN107910547B (en) * | 2017-11-30 | 2020-09-22 | 深圳绿霆动力科技有限公司 | High-specific-capacity lithium ion battery positive electrode material and preparation method thereof |
| WO2022227669A1 (en) * | 2021-04-30 | 2022-11-03 | 广东邦普循环科技有限公司 | Iron phosphate precursor and preparation method therefor and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100595949C (en) | 2010-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100595949C (en) | Method for making positive material positive ferric phosphate of lithium battery | |
| CN102491302B (en) | Battery-grade anhydrous iron phosphate and preparation method thereof | |
| CN102299322B (en) | Ion hot preparation method for lithium iron phosphate positive electrode material | |
| CN101337666A (en) | Method for preparing spherical ferric lithium phosphate by oxidation control crystal-carbon thermal reduction method | |
| CN102569792A (en) | Preparation method for one-step synthesis of high-rate-performance carbon-coated lithium iron phosphate cathode material by in-situ hydrothermal carbonization | |
| CN101891181B (en) | Preparation method of pure-phase high-crystallinity lithium iron phosphate | |
| CN104332629B (en) | The preparation method of a kind of lithium manganese phosphate hollow nanospheres and product | |
| CN103825024A (en) | Battery-grade ferric phosphate and preparation method | |
| CN106129388B (en) | A kind of LiFePO4/three-dimensional carbon skeleton/carbon composite preparation method | |
| CN103022491A (en) | Method for preparing lithium iron phosphate precursor for positive pole material of lithium-ion battery | |
| CN106025241A (en) | Graphene aerogel loaded lithium iron phosphate porous composite material and preparation method thereof | |
| CN102897743A (en) | Preparation method of lithium iron phosphate nanometer material | |
| CN105174240B (en) | Nanometer rods assembling iron manganese phosphate for lithium microballoon, composite and preparation method thereof | |
| CN102983328A (en) | Method for preparing nanocrystalline lithium iron phosphate anode material from ferrous powder | |
| CN101841021B (en) | Composite anode material of lithium iron phosphate and lithium vanadium phosphate and preparation method thereof | |
| CN104183827B (en) | A kind of lithium iron phosphate nano rod and preparation method thereof | |
| CN103337607B (en) | The method that lithium ferrosilicon silicate of lithium-ion battery cathode material is prepared by ilmenite | |
| CN107785570B (en) | Preparation method for improving yield of olivine structure electrode material by hydrothermal method | |
| CN104051731A (en) | Pollution-free and zero-discharge lithium iron phosphate preparation method | |
| CN101767782A (en) | Production method of lithium dihydrogen phosphate | |
| CN103956464B (en) | A kind of water at atmospheric pressure is combined to the method mixing graphene nano richness manganese LiFePO 4 | |
| CN101830484A (en) | Method for recovering lithium hydroxide from waste filtrate generated in preparation of LiFePO4 material by liquid-phase method | |
| CN108539146A (en) | A kind of lithium ion battery composite cathode material and the preparation method and application thereof | |
| CN105449204A (en) | Preparation method for full-dimensional carbon-coated LiMnPO4 nanoparticle | |
| CN107732236B (en) | Utilize the method for siderite hydrothermal synthesis anode material for lithium-ion batteries |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHENGZHOU RUIPU NEW MATERIAL ENGINEERING CO., LTD. Free format text: FORMER OWNER: ZHENGZHOU RUIPU BIOENGINEERING CO., LTD. Effective date: 20120423 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120423 Address after: 450001, No. three, building 96, Plaza No.1, Ruida Road, Zhengzhou hi tech Zone, Henan, D308 Patentee after: Zhengzhou Ruipu New Materials Engineering Co. Ltd. Address before: 450001, Zhengzhou province high tech Zone, Ruida Road, No. 96, No. Patentee before: Zhengzhou Ruipu Bioengineering Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180531 Address after: 467400 77 east section of Qianjin Road, Baofeng County, Pingdingshan, Henan. Patentee after: Henan rubijia Bio Technology Co., Ltd. Address before: 450001 D308 three, building 1, pioneer Plaza, 96 Ruida Road, Zhengzhou high tech Zone, Henan. Patentee before: Zhengzhou Ruipu New Materials Engineering Co. Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20210226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |