CN1280185C - Preparation process of lithium ferrous phosphate for positive pole of lithium ion cell - Google Patents
Preparation process of lithium ferrous phosphate for positive pole of lithium ion cell Download PDFInfo
- Publication number
- CN1280185C CN1280185C CN 200410039176 CN200410039176A CN1280185C CN 1280185 C CN1280185 C CN 1280185C CN 200410039176 CN200410039176 CN 200410039176 CN 200410039176 A CN200410039176 A CN 200410039176A CN 1280185 C CN1280185 C CN 1280185C
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- CN
- China
- Prior art keywords
- lithium
- phosphate
- lithium ion
- temperature
- preparation
- 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.)
- Expired - Lifetime
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- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229910052744 lithium Inorganic materials 0.000 title claims description 24
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 23
- 229940116007 ferrous phosphate Drugs 0.000 title claims description 17
- 229910000155 iron(II) phosphate Inorganic materials 0.000 title claims description 17
- SDEKDNPYZOERBP-UHFFFAOYSA-H iron(ii) phosphate Chemical compound [Fe+2].[Fe+2].[Fe+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O SDEKDNPYZOERBP-UHFFFAOYSA-H 0.000 title claims description 17
- 239000000463 material Substances 0.000 claims abstract description 27
- 239000000654 additive Substances 0.000 claims abstract description 26
- 230000000996 additive effect Effects 0.000 claims abstract description 23
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 150000001875 compounds Chemical class 0.000 claims abstract description 5
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 4
- 229910010707 LiFePO 4 Inorganic materials 0.000 claims description 20
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 239000010405 anode material Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000007789 gas Substances 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
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 6
- 239000003205 fragrance Substances 0.000 claims description 6
- LDHBWEYLDHLIBQ-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide;hydrate Chemical compound O.[OH-].[O-2].[Fe+3] LDHBWEYLDHLIBQ-UHFFFAOYSA-M 0.000 claims description 6
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 6
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 5
- 229920001897 terpolymer Polymers 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 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
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 claims description 4
- 229920002521 macromolecule Polymers 0.000 claims description 4
- 238000000197 pyrolysis Methods 0.000 claims description 4
- LBUFUGUBSLOGNM-UHFFFAOYSA-N C1=CC=CC=C1.C1=CC=CC2=CC=CC=C21.C1=CC=CC2=CC3=CC=CC=C3C=C21 Chemical compound C1=CC=CC=C1.C1=CC=CC2=CC=CC=C21.C1=CC=CC2=CC3=CC=CC=C3C=C21 LBUFUGUBSLOGNM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- WINTXHPCODMMRI-UHFFFAOYSA-N benzene naphthalene Chemical compound C1=CC=CC=C1.C1=CC=CC=C1.C1=CC=CC2=CC=CC=C21 WINTXHPCODMMRI-UHFFFAOYSA-N 0.000 claims description 3
- FFHRTSKTHPDADK-UHFFFAOYSA-N benzene naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC=C1.C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 FFHRTSKTHPDADK-UHFFFAOYSA-N 0.000 claims description 3
- 150000001721 carbon Chemical class 0.000 claims description 3
- YNQRWVCLAIUHHI-UHFFFAOYSA-L dilithium;oxalate Chemical compound [Li+].[Li+].[O-]C(=O)C([O-])=O YNQRWVCLAIUHHI-UHFFFAOYSA-L 0.000 claims description 3
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 claims description 3
- XIXADJRWDQXREU-UHFFFAOYSA-M lithium acetate Chemical compound [Li+].CC([O-])=O XIXADJRWDQXREU-UHFFFAOYSA-M 0.000 claims description 3
- 150000003016 phosphoric acids Chemical class 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 claims description 3
- 239000004254 Ammonium phosphate Substances 0.000 claims description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- LNOZJRCUHSPCDZ-UHFFFAOYSA-L iron(ii) acetate Chemical compound [Fe+2].CC([O-])=O.CC([O-])=O LNOZJRCUHSPCDZ-UHFFFAOYSA-L 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000013078 crystal Substances 0.000 abstract description 8
- 239000012298 atmosphere Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 3
- 229910003002 lithium salt Inorganic materials 0.000 abstract description 3
- 159000000002 lithium salts Chemical class 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 4
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 21
- 239000007774 positive electrode material Substances 0.000 description 18
- 238000002156 mixing Methods 0.000 description 17
- 230000002441 reversible effect Effects 0.000 description 13
- 239000002245 particle Substances 0.000 description 12
- 239000000523 sample Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 239000012299 nitrogen atmosphere Substances 0.000 description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000008151 electrolyte solution Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 229910052596 spinel Inorganic materials 0.000 description 5
- 239000011029 spinel Substances 0.000 description 5
- 229910012820 LiCoO Inorganic materials 0.000 description 4
- 239000003610 charcoal Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 3
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 3
- 229910010710 LiFePO Inorganic materials 0.000 description 3
- 229910015645 LiMn Inorganic materials 0.000 description 3
- 229910014689 LiMnO Inorganic materials 0.000 description 3
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 239000002296 pyrolytic carbon Substances 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 229910013870 LiPF 6 Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 2
- 229930006000 Sucrose Natural products 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 235000019241 carbon black Nutrition 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004087 circulation Effects 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920003987 resole Polymers 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000005720 sucrose Substances 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910010586 LiFeO 2 Inorganic materials 0.000 description 1
- 229910021314 NaFeO 2 Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- QDWNJWYHGDYFOG-UHFFFAOYSA-N [N+](=O)(O)[O-].[Li] Chemical compound [N+](=O)(O)[O-].[Li] QDWNJWYHGDYFOG-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000011532 electronic conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- 229910001386 lithium phosphate Inorganic materials 0.000 description 1
- 229910021437 lithium-transition metal oxide Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
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CN 200410039176 CN1280185C (en) | 2004-02-20 | 2004-02-20 | Preparation process of lithium ferrous phosphate for positive pole of lithium ion cell |
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CN 200410039176 CN1280185C (en) | 2004-02-20 | 2004-02-20 | Preparation process of lithium ferrous phosphate for positive pole of lithium ion cell |
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CN1559889A CN1559889A (en) | 2005-01-05 |
CN1280185C true CN1280185C (en) | 2006-10-18 |
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CN 200410039176 Expired - Lifetime CN1280185C (en) | 2004-02-20 | 2004-02-20 | Preparation process of lithium ferrous phosphate for positive pole of lithium ion cell |
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Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100390052C (en) * | 2006-02-28 | 2008-05-28 | 北大先行科技产业有限公司 | Method for synthesizing spheroidal lithium phosphate |
TWI413292B (en) * | 2006-09-04 | 2013-10-21 | Synergy Scientech Corp | Cathode active materials with improved electrochemical properties |
CN100440591C (en) * | 2006-10-12 | 2008-12-03 | 卢星河 | Pre-processing method for phosphorous anode material, and obtained phosphorous anode material |
CN100453454C (en) * | 2006-11-02 | 2009-01-21 | 西北核技术研究所 | Preparation method of lithium ferrous phosphate positive electrode material |
CN100461507C (en) * | 2006-12-27 | 2009-02-11 | 中国科学院上海微***与信息技术研究所 | Making method for nano LiFePO4-carbon composite cathode material |
CN101327921B (en) * | 2007-06-20 | 2010-05-26 | 中南大学 | Preparation of ferric phosphate lithium composite material |
CN101357756B (en) * | 2007-07-31 | 2010-10-06 | 比亚迪股份有限公司 | Method for preparing lithium battery positive pole material lithium iron phosphate |
CN101399343B (en) | 2007-09-25 | 2011-06-15 | 比亚迪股份有限公司 | Preparing method of anode active material lithium iron phosphate for lithium ionic secondary cell |
CN101237039B (en) * | 2008-01-08 | 2010-11-17 | 上海大学 | Method for synthesizing LiFePO4/C material based on chemical gas phase sediment auxiliary solid phase method |
CN101494305B (en) | 2008-01-25 | 2011-05-18 | 比亚迪股份有限公司 | Lithium ion battery electrolyte and battery and battery set containing the same |
US8088305B2 (en) | 2008-02-22 | 2012-01-03 | Byd Company Limited | Lithium iron phosphate cathode material |
US8062559B2 (en) | 2008-02-29 | 2011-11-22 | Byd Company Limited | Composite compound with mixed crystalline structure |
US8052897B2 (en) | 2008-02-29 | 2011-11-08 | Byd Company Limited | Composite compound with mixed crystalline structure |
US8057711B2 (en) | 2008-02-29 | 2011-11-15 | Byd Company Limited | Composite compound with mixed crystalline structure |
US8062560B2 (en) | 2008-02-29 | 2011-11-22 | Byd Company Limited | Composite compound with mixed crystalline structure |
US8148015B2 (en) | 2008-03-21 | 2012-04-03 | Byd Company Limited | Cathode materials for lithium batteries |
CN101597089A (en) | 2008-06-06 | 2009-12-09 | 比亚迪股份有限公司 | The preparation method of a kind of transition metal hydroxide and oxide compound thereof and positive electrode material |
CN101640288B (en) | 2008-07-30 | 2012-03-07 | 比亚迪股份有限公司 | Lithium-ion battery electrolyte and lithium-ion battery containing same |
CN101830453A (en) * | 2010-05-27 | 2010-09-15 | 谢朝华 | Secondary sintering synthesis method for lithium iron phosphate |
CN101948101A (en) * | 2010-09-09 | 2011-01-19 | 浙江瑞邦科技有限公司 | Method for preparing anode material lithium iron phosphate material of lithium battery |
CN102479944B (en) * | 2010-11-22 | 2014-12-10 | 海洋王照明科技股份有限公司 | Preparation method and application of lithium iron phosphate composite material |
CN102694169B (en) * | 2012-03-07 | 2014-11-12 | 湖北万润新能源科技发展有限公司 | FePO4/high polymer cracked carbon composite material and preparation method thereof, and NH4Fe2(OH)(PO4)2.2H2O/high polymer composite material and preparation method thereof |
CN102709558B (en) * | 2012-06-08 | 2014-04-09 | 中南大学 | Method for preparing lithium iron phosphate from vivianite |
CN103035899B (en) * | 2013-01-14 | 2015-05-27 | 山东天润丰新能源科技有限公司 | Method for performing carbon coating modification on nano-powder by adopting water-soluble polymer |
CN106887570A (en) * | 2017-03-01 | 2017-06-23 | 沧州锐星化学科技有限公司 | Lithium-ion-power cell LiFePO 4 composite positive pole and preparation method thereof |
-
2004
- 2004-02-20 CN CN 200410039176 patent/CN1280185C/en not_active Expired - Lifetime
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