CN102683683A - Strontium-and barium-doped lithium iron phosphate nanometer cathode material and preparation method thereof - Google Patents
Strontium-and barium-doped lithium iron phosphate nanometer cathode material and preparation method thereof Download PDFInfo
- Publication number
- CN102683683A CN102683683A CN2011104189254A CN201110418925A CN102683683A CN 102683683 A CN102683683 A CN 102683683A CN 2011104189254 A CN2011104189254 A CN 2011104189254A CN 201110418925 A CN201110418925 A CN 201110418925A CN 102683683 A CN102683683 A CN 102683683A
- Authority
- CN
- China
- Prior art keywords
- barium
- strontium
- source
- lithium
- 1mol
- 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
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims description 9
- 239000010406 cathode material Substances 0.000 title abstract 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052788 barium Inorganic materials 0.000 claims abstract description 24
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 19
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 13
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 239000010405 anode material Substances 0.000 claims description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 9
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 8
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 8
- 239000011858 nanopowder Substances 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 238000003837 high-temperature calcination Methods 0.000 claims description 7
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- 229910000018 strontium carbonate Inorganic materials 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 4
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 4
- 229940062993 ferrous oxalate Drugs 0.000 claims description 4
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 claims description 4
- OWZIYWAUNZMLRT-UHFFFAOYSA-L iron(2+);oxalate Chemical compound [Fe+2].[O-]C(=O)C([O-])=O OWZIYWAUNZMLRT-UHFFFAOYSA-L 0.000 claims description 4
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 3
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 3
- 229910001626 barium chloride Inorganic materials 0.000 claims description 3
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 claims description 3
- 229910001863 barium hydroxide Inorganic materials 0.000 claims description 3
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 3
- CJDPJFRMHVXWPT-UHFFFAOYSA-N barium sulfide Chemical compound [S-2].[Ba+2] CJDPJFRMHVXWPT-UHFFFAOYSA-N 0.000 claims description 3
- CSSYLTMKCUORDA-UHFFFAOYSA-N barium(2+);oxygen(2-) Chemical compound [O-2].[Ba+2] CSSYLTMKCUORDA-UHFFFAOYSA-N 0.000 claims description 3
- SNKMVYBWZDHJHE-UHFFFAOYSA-M lithium;dihydrogen phosphate Chemical compound [Li+].OP(O)([O-])=O SNKMVYBWZDHJHE-UHFFFAOYSA-M 0.000 claims description 3
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- UUCCCPNEFXQJEL-UHFFFAOYSA-L strontium dihydroxide Chemical compound [OH-].[OH-].[Sr+2] UUCCCPNEFXQJEL-UHFFFAOYSA-L 0.000 claims description 3
- 229910001866 strontium hydroxide Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- 229910019142 PO4 Inorganic materials 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002243 precursor Substances 0.000 abstract 2
- 238000013019 agitation Methods 0.000 abstract 1
- 238000001354 calcination Methods 0.000 abstract 1
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 10
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000005955 Ferric phosphate Substances 0.000 description 1
- 229910013021 LiCoC Inorganic materials 0.000 description 1
- 229910010710 LiFePO Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 159000000009 barium salts Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 description 1
- 238000010189 synthetic method 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)
Abstract
The invention relates to a method for preparing a strontium-and barium-doped lithium iron phosphate nanometer cathode material. The method is characterized by comprising the following steps of: mixing a lithium source, an iron source, a phosphate radical source, a strontium source and a barium source which serve as raw materials in a mole ratio of 1 to 1 to 1 to (0.00002-0.00005) to (0.0003-0.003); sealing the mixture in an agitation reactor at the temperature of 5 to 120 DEG C; reacting for 0.5 to 24 hours; filtering, washing and drying to obtain a nanometer precursor; placing the nanometer precursor in a high-temperature furnace; and calcining in a nitrogen atmosphere at the temperature of 500 to 750 DEG C for 16 to 24 hours to obtain the strontium-and barium-doped lithium iron phosphate nanometer powder cathode material. The particle size of the obtained strontium-and barium-doped lithium iron phosphate nanometer powder cathode material is between 30 and 85nm, the first discharge capacity of the obtained strontium-and barium-doped lithium iron phosphate nanometer powder cathode material is greatly improved and is more than 160.21mAh/g, and the production cost can be reduced by more than ten times.
Description
Technical field
Strontium of the present invention, barium mix the lithium iron phosphate nano method for preparing anode material, belong to a kind of anode material of lithium battery preparation method, particularly a kind of ferric phosphate lithium cell method for preparing anode material.
Background technology
Nano material is meant the material that in three dimensions, has at least one dimension to be in nanoscale scope (1-100nm) or to be made up of as elementary cell them; The nanoscale structures material abbreviates nano material (nanometermaterial) as, and the size that is meant its construction unit is between 1 nanometer～100 nanometer range.Because its size is near the coherence length of electronics, great changes will take place because the strong relevant self-organizing that is brought makes character for its character.And its yardstick adds that near light wavelength it has the special effects on big surface, so the characteristic that it showed, and for example fusing point, magnetic, optics, heat conduction, conductive characteristic or the like often are different from the character that this material is showed when integrality.The lithium iron phosphate positive material of doping vario-property can improve conductivity through mixing, and high-rate charge-discharge capability also improves, and has suppressed the effect of capacity attenuation to a certain extent.The doping approach can improve, improve the lithium ion anode material performance, has been a kind of feasible mode of generally acknowledging.Through the publication retrieval, put down in writing 3 of relevant lithium battery nano anode material patent applications at present, it is: 00134039.5 1 kinds of lithium ion cell nano anode material LiCoC of Chemistry &. Chemical Engineering College, Lanzhou Univ.
2The preparation method; Tsing-Hua University; 200610011712.9 rare earth doped carbon clad type nanometer anode material LiFePO4s of Shanxi Prov. Glass & Ceramic Sciences Research Inst. and preparation method thereof; The continuous hydrothermal synthetic method of 200710037314.9 lithium ion cell nano anode materials of Shanghai Communications University.
Summary of the invention
The objective of the invention is to: based on the lithium iron phosphate positive material (LiFePO of prior art
4) structural limitations, have its poorly conductive and the low deficiency of lithium ion diffusion coefficient, a kind of strontium is proposed, barium mixes lithium iron phosphate nano positive electrode and preparation method thereof.
The present invention can improve, improve the lithium ion anode material performance in view of the doping approach, has been a kind of feasible mode of generally acknowledging.According to the chemical property of barium/lithium, electric property, crystal structure characteristic is the characteristics of akin element:
Barium is element the most active in the alkaline-earth metal, because it is very active, and oxidized easily, should be kept in kerosene and the atoleine.
5.212 electron-volts of ionization energy, the first ionization energy 502.9kJ/mol;
Crystal structure: structure cell is a body centred cubic cell, and each structure cell contains 2 metallic atoms;
Cell parameter: a=502.8pm; B=502.8pm; C=502.8pm; α=90 °; β=90 °; γ=90 °.
Lithium, metallic element can react with a large amount of inorganic reagents and organic reagent.With equal ability such as oxygen, nitrogen, sulphur chemical combination, the deepening owing to be prone to oxidated, and density is littler than kerosene, so should deposit in the atoleine.
5.392 electron-volts of ionization energy, the first ionization energy 520.2kJ/mol;
Crystal structure: structure cell is a body centred cubic cell, and each structure cell contains 2 metallic atoms;
Cell parameter: a=351pm; B=351pm; C=351pm; α=90 °; β=90 °; γ=90 °.
Think that barium should be to be easy to the doping effect of lithium position most.The present invention be mix through barium make an experiment, in the situation of mixing with barium, can add 1-2 other element again, constitute 2 yuan or 3 yuan of doping, with obtained performance anode material of lithium battery preferably, it processes its performance of nanoscale product will be more outstanding.
Strontium of the present invention, barium mix the lithium iron phosphate nano positive electrode, it is characterized in that: its particle size is in the 30-85nm scope, and its chemical composition or chemical general formula can be expressed as: LiSrxBayFePO
4, x=0.00002-0.00005, y=0.0003-0.003; Wherein the mol of Li, Sr, Ba, Fe, P ratio is: 1mol Li:0.00002-0.00005mol Sr:0.0003-0.003mol Ba:1mol Fe:1mol P.
Strontium of the present invention, barium mix the lithium iron phosphate nano method for preparing anode material, it is characterized in that: the raw material in its lithium source, source of iron, phosphoric acid root, strontium source, barium source, after 1mol Li:0.00002-0.00005mol Sr:0.0003-0.003mol Ba:1mol Fe:1mol P mixed; In 5-120 ℃ of sealing stirred reactor, reacted 0.5-24 hour, obtain the nanometer presoma after filtering, wash, drying; The presoma that oven dry is obtained places in the high temperature furnace; In blanket of nitrogen,, promptly get the lithium iron phosphate nano powder positive electrode that mixes of the present invention through 500-750 ℃ of high-temperature calcination 16-24h; Its particle size is in the 30-85nm scope; Its chemical composition is: Li Sr x Bay Fe PO4, x=0.00002-0.00005, y=0.0003-0.003; Wherein the mol of Li, Sr, Ba, Fe, P ratio is: 1mol Li:0.00002-0.00005mol Sr:0.0003-0.003mol Ba:1mol Fe:1mol P.Its lithium source is one of lithium carbonate, lithium hydroxide or lithium dihydrogen phosphate; Source of iron is a ferrous oxalate; The phosphoric acid root is one of ammonium dihydrogen phosphate or diammonium hydrogen phosphate; The strontium source is one of Preparation of Metallic Strontium, strontium hydroxide, strontium carbonate, and the barium source is one of brium carbonate, barium hydroxide, barium chloride, barium nitrate, barium monoxide, barium sulphide.
The present invention's beneficial effect compared with prior art: strontium of the present invention, barium mix the lithium iron phosphate nano method for preparing anode material; Gained powder positive electrode, granularity be in the 30-85nm scope, its first discharge capacity improve greatly; Reach more than the 160.21mAh/g, production cost can fall more than ten times.
Embodiment
Below in conjunction with embodiment the present invention is described further, but execution mode of the present invention is not limited thereto.
Embodiment 1
Strontium of the present invention, barium mix the lithium iron phosphate nano method for preparing anode material; Its lithium source can be used: lithium salts such as lithium carbonate, lithium hydroxide or lithium dihydrogen phosphate; Source of iron can be used: ferrous oxalate etc., and the phosphoric acid root can be used: ammonium dihydrogen phosphate or diammonium hydrogen phosphate etc., the strontium source is a Preparation of Metallic Strontium; Strontium hydroxide (Sr (OH) 2), strontium carbonate SrCO3, the barium source can be used: barium salts such as brium carbonate, barium hydroxide, barium chloride, barium nitrate, barium monoxide, barium sulphide.
Select for use: lithium carbonate (Li2CO3) (99.73%), strontium carbonate (99.8%), brium carbonate (BaCO3) (99.8%), ferrous oxalate (FeC2O4.2H2O) (99.06%), diammonium hydrogen phosphate (NH4H2PO4) (98%) is a raw material; After 1mol Li:0.00002-0.00005mol Sr:0.0003-0.003mol Ba:1mol Fe:1mol P mixed, in 5-120 ℃ of sealing stirred reactor, reacted 0.5-24 hour; Obtain the nanometer presoma after filtering, wash, drying; The presoma that oven dry is obtained places in the high temperature furnace, in blanket of nitrogen, through 500-750 ℃ of high-temperature calcination 16-24h; Promptly get the lithium iron phosphate nano powder positive electrode that mixes of the present invention, its particle size is in the 30-85nm scope.
Embodiment 2
Li2CO3 (99.73%, SrCO (99.8%), BaCO3 (99.8%); FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material is after 1mol Li:0.00002mol Sr:0.0003mol Ba:1mol Fe:1molP mixed; In 5-10 ℃ of sealing stirred reactor, reacted 24 hours, obtain the nanometer presoma after filtering, wash, drying; The presoma that oven dry is obtained places in the high temperature furnace; In blanket of nitrogen,, promptly get the lithium iron phosphate nano powder positive electrode that mixes of the present invention through 500-750 ℃ of high-temperature calcination 16-24h.
Embodiment 3
Li2CO3 (99.73%, SrCO (99.8%), BaCO3 (99.8%); FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material is after 1mol Li:0.00004mol Sr:0.001mol Ba:1mol Fe:1mol P mixed; In 20-30 ℃ of sealing stirred reactor, reacted 20 hours, obtain the nanometer presoma after filtering, wash, drying; The presoma that oven dry is obtained places in the high temperature furnace; In blanket of nitrogen,, promptly get the lithium iron phosphate nano powder positive electrode that mixes of the present invention through 500-750 ℃ of high-temperature calcination 16-24h.
Embodiment 4
Li2CO3 (99.73%, SrCO (99.8%), BaCO3 (99.8%); FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material is after 1mol Li:0.00005mol Sr:0.003mol Ba:1mol Fe:1mol P mixed; In 50-80 ℃ of sealing stirred reactor, reacted 5 hours, obtain the nanometer presoma after filtering, wash, drying; The presoma that oven dry is obtained places in the high temperature furnace; In blanket of nitrogen,, promptly get the lithium iron phosphate nano powder positive electrode that mixes of the present invention through 500-750 ℃ of high-temperature calcination 16-24h.
Embodiment 5
Li2CO3 (99.73%, SrCO (99.8%), BaCO3 (99.8%); FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material is after 1mol Li:0.00002mol Sr:0.0003mol Ba:1mol Fe:1molP mixed; In 100-120 ℃ of sealing stirred reactor, reacted 0.5 hour, obtain the nanometer presoma after filtering, wash, drying; The presoma that oven dry is obtained places in the high temperature furnace; In blanket of nitrogen,, promptly get the lithium iron phosphate nano powder positive electrode that mixes of the present invention through 500-750 ℃ of high-temperature calcination 16-24h.
Adopt the testing equipment of prior art and the method for testing of prior art, to above embodiment 1-5 mix lithium iron phosphate nano powder positive electrode, carry out test result and be: particle size is in the 30-85nm scope, and discharge capacity reaches more than the 160.21mAh/g first.
Claims (3)
1. a strontium, barium mix the lithium iron phosphate nano positive electrode, it is characterized in that: its particle size is in the 30-85nm scope, and its chemical composition or chemical general formula can be expressed as: LiSrxBayFePO
4, x=0.00002-0.00005, y=0.0003-0.003; Wherein the mol of Li, Sr, Ba, Fe, P ratio is: 1mol Li:0.00002-0.00005mol Sr:0.0003-0.003mol Ba:1mol Fe:1mol P.
2. a strontium, barium mix the lithium iron phosphate nano method for preparing anode material, it is characterized in that: the raw material in its lithium source, source of iron, phosphoric acid root, strontium source, barium source, after 1mol Li:0.00002-0.00005mol Sr:0.0003-0.003mol Ba:1mol Fe:1mol P mixed; In 5-120 ℃ of sealing stirred reactor; Reacted 0.5-24 hour, and obtained the nanometer presoma after filtering, wash, drying, the presoma that oven dry is obtained places in the high temperature furnace; In blanket of nitrogen; Through 500-750 ℃ of high-temperature calcination 16-24h, promptly get the lithium iron phosphate nano powder positive electrode that mixes of the present invention, its particle size is in the 30-85nm scope.
3. strontium according to claim 2, barium mix the lithium iron phosphate nano method for preparing anode material; It is characterized in that: its lithium source is one of lithium carbonate, lithium hydroxide or lithium dihydrogen phosphate; Source of iron is a ferrous oxalate; The phosphoric acid root is one of ammonium dihydrogen phosphate or diammonium hydrogen phosphate, and the strontium source is one of Preparation of Metallic Strontium, strontium hydroxide, strontium carbonate, and the barium source is one of brium carbonate, barium hydroxide, barium chloride, barium nitrate, barium monoxide, barium sulphide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110418925.4A CN102683683B (en) | 2011-12-12 | 2011-12-12 | Strontium, barium doped iron lithium phosphate nano anode material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110418925.4A CN102683683B (en) | 2011-12-12 | 2011-12-12 | Strontium, barium doped iron lithium phosphate nano anode material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102683683A true CN102683683A (en) | 2012-09-19 |
| CN102683683B CN102683683B (en) | 2015-09-30 |
Family
ID=46815293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110418925.4A Expired - Fee Related CN102683683B (en) | 2011-12-12 | 2011-12-12 | Strontium, barium doped iron lithium phosphate nano anode material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102683683B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1431147A (en) * | 2003-02-17 | 2003-07-23 | 郑绵平 | Wet chemistry method for preparing lithium iron phosphate |
| JP2006048991A (en) * | 2004-08-02 | 2006-02-16 | Sumitomo Osaka Cement Co Ltd | Positive electrode active material for lithium battery, its manufacturing method, and lithium battery |
| CN101393982A (en) * | 2008-10-28 | 2009-03-25 | 南京海泰纳米材料有限公司 | Method for producing carbon coated nano stage lithium iron phosphate by precipitation |
-
2011
- 2011-12-12 CN CN201110418925.4A patent/CN102683683B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1431147A (en) * | 2003-02-17 | 2003-07-23 | 郑绵平 | Wet chemistry method for preparing lithium iron phosphate |
| JP2006048991A (en) * | 2004-08-02 | 2006-02-16 | Sumitomo Osaka Cement Co Ltd | Positive electrode active material for lithium battery, its manufacturing method, and lithium battery |
| CN101393982A (en) * | 2008-10-28 | 2009-03-25 | 南京海泰纳米材料有限公司 | Method for producing carbon coated nano stage lithium iron phosphate by precipitation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102683683B (en) | 2015-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103165881B (en) | Doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN103996848B (en) | Anion-cation multiple dope type LiFePO4 LiFexm1-xpO4-ynyand prepare and application | |
| CN103066297A (en) | Preparation method of lithium ion battery anode materials mixed with stibium and barium | |
| CN102683676B (en) | Copper, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN105084338A (en) | Method for preparing anode material lithium ion cell lithium iron phosphate | |
| CN103165880B (en) | Titanium, barium mix iron phosphate nano cathode material and preparation method thereof | |
| CN102683688B (en) | Antimony, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683691B (en) | Cadmium, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683684B (en) | Selenium, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683680B (en) | Aluminium, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683681B (en) | Zirconium, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683687B (en) | Cobalt, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683689B (en) | Molybdenum-and barium-doped lithium iron phosphate nanometer cathode material and preparation method thereof | |
| CN102683683B (en) | Strontium, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683677B (en) | Zinc-and barium-doped lithium iron phosphate nanometer cathode material and preparation method thereof | |
| CN102683675B (en) | Germanium, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN103035911B (en) | Beryllium, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683679B (en) | Boron-barium doped lithium iron phosphate nano cathode material and preparation process thereof | |
| CN102683685B (en) | Vanadium, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683693B (en) | Bismuth, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683692B (en) | Silver, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683682B (en) | Niobium, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683690B (en) | Tin, barium doped iron lithium phosphate nano anode material and preparation method thereof | |
| CN102683686B (en) | Manganese, barium mix iron phosphate nano cathode material and preparation method thereof | |
| CN102683678B (en) | Nickel and barium doped lithium iron phosphate nano positive material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHANG YAJING Free format text: FORMER OWNER: WEI LIMEI Effective date: 20150803 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150803 Address after: 542800 the Guangxi Zhuang Autonomous Region Hezhou City eight step District No. 40 West Lane Applicant after: Zhang Yajing Address before: 542800 the Guangxi Zhuang Autonomous Region Hezhou City eight step District No. 40 West Lane Applicant before: Wei Limei |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180829 Address after: 314000 room five, 22 building, Zhifu center, 966 Xiuzhou Road, Xiuzhou, Jiaxing, Zhejiang. Patentee after: Zhejiang Yuan Zhi new material Co.,Ltd. Address before: 542800 the Guangxi Zhuang Autonomous Region Hezhou eight step area construction east road Xiyuan Lane 40 Patentee before: Zhang Yajing |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 Termination date: 20211212 |