CN116692809A - 一种纳米级高熵磷酸盐材料及其制备方法与应用 - Google Patents
一种纳米级高熵磷酸盐材料及其制备方法与应用 Download PDFInfo
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- CN116692809A CN116692809A CN202210186989.4A CN202210186989A CN116692809A CN 116692809 A CN116692809 A CN 116692809A CN 202210186989 A CN202210186989 A CN 202210186989A CN 116692809 A CN116692809 A CN 116692809A
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- phosphate
- entropy
- salt
- soluble
- solution
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Links
- 229910019142 PO4 Inorganic materials 0.000 title claims abstract description 76
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 title claims abstract description 76
- 239000010452 phosphate Substances 0.000 title claims abstract description 76
- 239000000463 material Substances 0.000 title abstract description 20
- 238000002360 preparation method Methods 0.000 title abstract description 16
- 239000000243 solution Substances 0.000 claims abstract description 55
- 238000001035 drying Methods 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011574 phosphorus Substances 0.000 claims abstract description 24
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 24
- 239000002002 slurry Substances 0.000 claims abstract description 24
- 239000002245 particle Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000005406 washing Methods 0.000 claims abstract description 13
- 239000012266 salt solution Substances 0.000 claims abstract description 10
- 238000009775 high-speed stirring Methods 0.000 claims abstract description 9
- 239000003513 alkali Substances 0.000 claims abstract description 8
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 24
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical group [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 18
- 239000013078 crystal Substances 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 12
- 159000000003 magnesium salts Chemical class 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 11
- 150000002505 iron Chemical class 0.000 claims description 11
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical group [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 11
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 11
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 11
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 11
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical group [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 11
- 238000005303 weighing Methods 0.000 claims description 11
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 10
- 150000001868 cobalt Chemical class 0.000 claims description 9
- 239000011777 magnesium Substances 0.000 claims description 9
- 150000002696 manganese Chemical class 0.000 claims description 9
- 150000002815 nickel Chemical class 0.000 claims description 9
- 238000001556 precipitation Methods 0.000 claims description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052749 magnesium Inorganic materials 0.000 claims description 8
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 7
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 7
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000004544 sputter deposition Methods 0.000 claims description 6
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 6
- 239000004254 Ammonium phosphate Substances 0.000 claims description 5
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 5
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 5
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 5
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 4
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 4
- 238000000265 homogenisation Methods 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 3
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 3
- 229910000361 cobalt sulfate Inorganic materials 0.000 claims description 3
- 229940044175 cobalt sulfate Drugs 0.000 claims description 3
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical group [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 3
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 3
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 3
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 3
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical group [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 claims description 3
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 claims description 3
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 3
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims description 3
- 229910000160 potassium phosphate Inorganic materials 0.000 claims description 3
- 235000011009 potassium phosphates Nutrition 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 3
- 239000001488 sodium phosphate Substances 0.000 claims description 3
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 3
- 235000011008 sodium phosphates Nutrition 0.000 claims description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims 1
- 235000019838 diammonium phosphate Nutrition 0.000 claims 1
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims 1
- 235000019797 dipotassium phosphate Nutrition 0.000 claims 1
- 229910000396 dipotassium phosphate Inorganic materials 0.000 claims 1
- 239000011164 primary particle Substances 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000009257 reactivity Effects 0.000 abstract description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 5
- 229910000397 disodium phosphate Inorganic materials 0.000 description 4
- 235000019800 disodium phosphate Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 238000000975 co-precipitation Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000006012 monoammonium phosphate Substances 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 235000011007 phosphoric acid Nutrition 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 241000080590 Niso Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000012700 ceramic precursor Substances 0.000 description 1
- 150000004770 chalcogenides Chemical class 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229960004887 ferric hydroxide Drugs 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- IPJKJLXEVHOKSE-UHFFFAOYSA-L manganese dihydroxide Chemical compound [OH-].[OH-].[Mn+2] IPJKJLXEVHOKSE-UHFFFAOYSA-L 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- CRXSQTXNKKXMQW-UHFFFAOYSA-H manganese(2+);diphosphate;hydrate Chemical compound O.[Mn+2].[Mn+2].[Mn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O CRXSQTXNKKXMQW-UHFFFAOYSA-H 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 229910001960 metal nitrate Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000002694 phosphate binding agent Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- -1 rare earth orthophosphate Chemical class 0.000 description 1
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 229910052567 struvite Inorganic materials 0.000 description 1
- 239000012720 thermal barrier coating Substances 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 229910000319 transition metal phosphate Inorganic materials 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- 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
本发明公开了一种纳米级高熵磷酸盐材料及其制备方法与应用,该方法包括:配制金属元素种类不少于四种的包含第二主族、第三主族及副族金属元素的盐溶液或碱溶液或氧化物悬浊液,以及磷源溶液的步骤;将上述的溶液或悬浊液在高速搅拌的前提下反应,得到高熵磷酸盐料浆的步骤;以及将高熵磷酸盐料浆过滤、洗涤、干燥、焙烧脱水后,得到无水高熵磷酸盐的步骤。本发明的各原料在高速搅拌的前提下反应,显著降低了高熵磷酸盐一次颗粒粒径,提高了反应活性。
Description
技术领域
本发明属于高熵材料制备技术领域,具体涉及一种高熵磷酸盐及其制备方法,特别是通过高剪切均质条件下制备高熵磷酸盐的方法,还涉及在催化剂、粘合剂、锂电池领域的应用。
背景技术
高熵材料以引入高构型熵来稳定单相结构为前提,目前已经合成并公开的大量高熵化合物,包括碳化物、二硼化物、氮化物、氟化物、硫系化合物和氧化物,在热电、电介质和锂离子电池等领域,有着广泛的应用。
目前制备高熵材料的方法一般是固相烧结法,化学沉淀法应用很少,化学沉淀法制备出来高熵粉体相对于固相法颗粒细小,粒度分布均匀,活性好,各元素分布均匀。例如申请公布号CN110845237A将La(NO3)3、Co(NO3)2、Cr(NO3)3、Fe(NO3)3、Mn(NO3)2和Ni(NO3)2的混合溶液与氨水混合,进行共沉淀反应,固液分离后得到高熵陶瓷前驱体粉末,共沉淀反应的pH值为9~10;申请公布号CN111302781A用NiSO4·6H2O、CoSO4·7H2O、TiOSO4溶液、MnSO4·H2O、FeSO4作为原料,柠檬酸或草酸作为络合剂,进行制备高熵氧化物。文献《Nanocrystalline multicomponent entropy stabilized transition metal oxides》向混合硝酸盐溶液不断滴加氨水使其溶液pH保持在10左右,使得溶液产生沉淀,然后在120℃下干燥4h后,在1000℃下煅烧1h得到的高熵氧化物(Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O陶瓷粉体。例如公开号 CN110600703A用等摩尔量的金属硝酸盐,然后加入甘氨酸、乙二胺四乙酸、六次亚甲基四胺、六亚甲基二异氰酸酯、柠檬酸或草酸,高温保温得到五元尖晶石型氧化物高熵材料,其化学式为(Cr0.2Fe0.2Mn0.2Zn0.2M0.2)3O4,其中M为二价金属阳离子Co2+或Ni2+。公开号CN110818430A一种均匀的高熵氧化物陶瓷纳米粉体及其制备方法,将等摩尔比例的CoCl2、CuCl2、MgCl2、NiCl2和ZnCl2在无水乙醇中进行共混直至完全溶解,得到混合溶液,向混合溶液中加入尿素,充分混合使得金属氯化物与尿素发生交联反应,形成凝胶,将干凝胶进行高温热解处理,得到均匀的高熵氧化物(Co,Cu,Mg,Ni,Zn)O陶瓷亚微米级球形粉体。
过渡金属磷酸盐是一类广泛应用于生物反应、有机合成、析氧和光催化等领域的催化剂以及锂电正极材料和高温粘结剂等领域。
利用高熵材料中多种元素的本身特性和他们之间相互作用而使高熵材料呈现一种复杂效应的特点,开始了高熵磷酸盐的研究制备,如中国专利CN202110314700.8利用高温焙烧的方法制备了高热膨胀系数稀土正磷酸盐热障涂层材料,中国专利CN201711387640.2在线速度 0.6-3.0m/s的条件下采用液相合成法以制备了耐高温磷酸盐粘结剂,中国专利CN202110645861.5采用几种金属氧化物研磨混合再高温烧结的方法制备高熵无机电解质。在已有的高熵材料合成中,大部分的合成方法为固体高温反应和液相低速搅拌反应,上述方法合成的高熵材料一次颗粒及团聚体颗粒均较大,大大降低了材料的反应活性和应有的应用性能。
发明内容
1、要解决的问题
针对上述的问题,本发明提供一种纳米级高熵磷酸盐材料及其制备方法,利用高剪切均质液相合成高熵磷酸盐,可实现纳米级高熵磷酸盐的制备,从而提高了高熵材料的应用性能。
2、技术方案
为解决上述问题,本发明采用如下的技术方案:
本发明的纳米级高熵磷酸盐材料及其制备方法,包括:
配制金属元素种类不少于四种的包含第二主族、第三主族及副族金属元素的盐溶液或碱溶液或氧化物悬浊液,以及磷源溶液的步骤;
将上述的溶液或悬浊液在高速搅拌的前提下反应,得到高熵磷酸盐料浆的步骤;
以及将高熵磷酸盐料浆过滤、洗涤、干燥、焙烧脱水后,得到无水高熵磷酸盐的步骤。
具体的纳米级高熵磷酸盐的制备方法,包括以下步骤:
(1)配制溶液:称取第二主族、第三主族及副族金属盐、碱或氧化物配制金属盐溶液,称取磷源配制磷源溶液,其中所述金属元素和磷元素化学计量比为1:(0.95-2.0),优选1: (1.0-1.5);
(2)沉淀反应:在分子级别瞬时混匀的状态下,将金属盐溶液和磷源溶液充分混合,温度40~200℃,优选70-120℃;反应0s~300min,得到高熵磷酸盐料浆;
(3)固液分离:将步骤(2)得到的料浆进行固液分离、洗涤,得到分离后的固体;
(4)干燥:将步骤(3)得到的固体干燥,得到小颗粒含结晶水的高熵磷酸盐;
(5)焙烧脱水:将步骤(4)得到的固体,进一步在高温条件下脱除结晶水,得到小颗粒纳米级高熵磷酸盐。
于本发明一种可能的实施方式中,步骤(1)中所述金属盐为可溶性镁盐、铝盐、铁盐、锰盐、镍盐、钴盐中的至少四种以上且必须含有铁盐。
于本发明一种可能的实施方式中,步骤(1)中所述磷源为磷酸、磷酸二氢钠、磷酸一氢钠、磷酸钠、磷酸二氢铵、磷酸一氢铵、磷酸铵、磷酸二氢钾、磷酸一氢钾、磷酸钾中的一种或多种。
于本发明一种可能的实施方式中,可溶性铁盐为硫酸铁或氯化铁;可溶性铝盐为偏铝酸钠、硫酸铝或硝酸铝;可溶性镁盐为硫酸镁或硝酸镁;可溶性镍盐为硫酸镍或硝酸镍;可溶性钴盐为硫酸钴或硝酸钴;可溶性锰盐为硫酸亚锰或硝酸亚锰。
于本发明一种可能的实施方式中,金属元素包含有铁元素、镁元素、铝元素和锰元素,所述可溶性铁盐、可溶性镁盐、可溶性铝盐和可溶性锰盐的摩尔比为1:1:1:1。
于本发明一种可能的实施方式中,步骤(2)中所述的高速搅拌为高速旋转喷雾溅射、均质、超声、高剪切、微反应中的一种或多种。
于本发明一种可能的实施方式中,所述可溶性铁盐、可溶性铝盐浓度均为2~3mol/L。
于本发明一种可能的实施方式中,所述可溶性镍盐、可溶性钴盐、可溶性镁盐浓度均为 1~2mol/L。
3、有益效果
相比于现有技术,本发明的有益效果为:
(1)本发明的各原料在高速搅拌的前提下反应,降低高熵磷酸盐一次颗粒粒径,提高高熵磷酸盐反应活性;
(2)本发明将高速旋转喷雾溅射、均质、超声、高剪切、微反应中的一种或多种用于高熵磷酸盐的制备,由于能够实现瞬时反应,能够在确保样品性能指标的同时,实现原料用量的减少,从而显著降低成本和降低后续废水处理带来的一系列问题;
(3)本发明将高速旋转喷雾溅射、均质、超声、高剪切、微反应中的一种或多种用于高熵磷酸盐的制备,由于将人为因素转移到设备控制,不仅提高产品的稳定性和一致性。还使得生产过程易于控制;
(4)本发明利用常规设备制备高熵磷酸盐,设备易于加工,便于产业转化,生产工艺易于连续化。
具体实施方式
下文对本发明的详细描述和示例实施例来更好地理解。
本发明的纳米级高熵磷酸盐材料及其制备方法,包括:配制金属元素种类不少于四种的包含第二主族、第三主族及副族金属元素的盐溶液或碱溶液或氧化物悬浊液,以及磷源溶液的步骤;将上述的溶液或悬浊液在高速搅拌的前提下反应,得到高熵磷酸盐料浆的步骤;以及将高熵磷酸盐料浆过滤、洗涤、干燥、焙烧脱水后,得到无水高熵磷酸盐的步骤。
上述具体的纳米级高熵磷酸盐的制备方法,包括以下步骤:
(1)配制溶液:称取第二主族、第三主族及副族金属盐、碱或氧化物配制金属盐溶液,所述金属盐为可溶性镁盐、铝盐、铁盐、锰盐、镍盐、钴盐中的至少四种以上且必须含有铁盐,可溶性铁盐为硫酸铁或氯化铁;可溶性铝盐为偏铝酸钠、硫酸铝或硝酸铝;可溶性镁盐为硫酸镁或硝酸镁;可溶性镍盐为硫酸镍或硝酸镍;可溶性钴盐为硫酸钴或硝酸钴;可溶性锰盐为硫酸亚锰或硝酸亚锰,优选的所述可溶性铁盐、可溶性铝盐浓度均为2~3mol/L;优选的所述可溶性镍盐、可溶性钴盐、可溶性镁盐浓度均为1~2mol/L。
其中碱包括氢氧化镁、氢氧化铁、氢氧化锰、氢氧化镍、氢氧化铝;氧化物包括氧化镁、氧化铁、氧化锰、氧化钴、氧化镍和氧化铝;称取磷源配制磷源溶液,其中所述金属元素和磷元素化学计量比为1:(0.95-2.0),优选1:(1.0-1.5)。
在特定的情况下,限定金属元素包含有铁元素、镁元素、铝元素和锰元素,所述可溶性铁盐、可溶性镁盐、可溶性铝盐和可溶性锰盐的摩尔比为1:1:1:1。
进一步的,所述磷源为磷酸、磷酸二氢钠、磷酸一氢钠、磷酸钠、磷酸二氢铵、磷酸一氢铵、磷酸铵、磷酸二氢钾、磷酸一氢钾、磷酸钾中的一种或多种;
(2)沉淀反应:在分子级别瞬时混匀的状态下,将金属盐溶液和磷源溶液高速搅拌充分混合,所述高速搅拌为高速旋转喷雾溅射、均质、超声、高剪切、微反应中的一种或多种;温度40~200℃,优选70-120℃;反应0s~300min,得到高熵磷酸盐料浆;
由于能够在反应器内形成核之前得到分子水平的化学均匀性,因此能够在短时间内得到高过饱和状态,从而在析出初期阶段生成大量的核,进而制造粒度分布均匀且微细的析出粒子。此外,在反应器内,由于能够在短时间内得到分子水平的化学均匀性,因此在合成高熵磷酸盐时能够防止大的中间凝聚物的形成以及诸如水合金属氧化物之类的中间物质的形成,由此,能够使析出物主要包含高熵磷酸盐,通过实验测试表明,本发明显著降低了高熵磷酸盐一次颗粒粒径,提高了反应活性。
有理论研究表明,在该反应系统中,当温度低于40℃时,晶核形成慢且数目少,形成的晶体粒径大;温度高,晶核形成快且数目多,使晶核来不及长大,形成的晶体粒径较小。当温度大于200℃的时候粒径反而开始增大,这是因为随着温度的升高,颗粒之间的碰撞几率增大,造成了团聚现象的产生。
(3)固液分离:将步骤(2)得到的料浆进行固液分离、洗涤,得到分离后的固体;固液分离采用真空抽滤机压滤、洗涤;
(4)干燥:将步骤(3)得到的固体采用鼓风干燥箱干燥,得到小颗粒含结晶水的高熵磷酸盐;
(5)焙烧脱水:将步骤(4)得到的固体,进一步在600-700℃高温条件下高温炉脱除结晶水,得到小颗粒纳米级高熵磷酸盐。
实施例1
本实施例的纳米级高熵磷酸盐的制备方法,该方法包括以下步骤:
(1)配制溶液:按铁+锰+铝+镁和磷元素化学计量比1:1.3,称取硫酸铁、硫酸亚锰、硫酸铝、硫酸镁、磷酸一氢铵,并分别配制成0.5mol/L的硫酸铁溶液A,0.35mol/L的硫酸亚锰溶液B,0.5mol/L的硫酸铝溶液C,0.5mol/L的硫酸镁溶液D,4mo/L的磷酸一氢铵溶液E;
(2)沉淀反应:在10000rpm的高速旋转喷雾溅射的状态下,将A、B、C、D、E充分同时加入并混合,温度90℃,反应瞬时,得到高熵磷酸盐料浆;
(3)固液分离:将步骤(2)得到的料浆在真空抽滤机上进行固液分离、洗涤,得到分离后的固体;
(4)干燥:将步骤(3)得到的固体在鼓风干燥箱内干燥,干燥温度105℃,得到一种小颗粒一水高熵磷酸盐;
(5)焙烧脱水:将步骤(4)得到的固体,在高温炉内650℃下脱除结晶水,测得高熵磷酸盐一次颗粒粒径为35nm。
实施例2
本实施例的纳米级高熵磷酸盐的制备方法,该方法包括以下步骤:
(1)配制溶液:按铁+锰+铝+镁和磷元素化学计量比1:1.02,称取硫酸铁、硝酸亚锰、偏铝酸钠、硝酸镁、磷酸铵,并分别配制成1mol/L的硫酸铁溶液A,0.67mol/L的硝酸亚锰溶液B,0.5mol/L的偏铝酸钠溶液C,0.67mol/L的硝酸镁溶液D,4mo/L的磷酸铵溶液C;
(2)沉淀反应:在1MPa大气压力下,同时将A、B、C、D、E注入微反应器中实现瞬时接触,温度100℃,反应瞬时,得到高熵磷酸盐料浆;
(3)固液分离:将步骤(2)得到的料浆在真空抽滤机上进行固液分离、洗涤,得到分离后的固体;
(4)干燥:将步骤(3)得到的固体在鼓风干燥箱内干燥,干燥温度105℃,得到一种小颗粒一水磷酸铁锰;
(5)焙烧脱水:将步骤(4)得到的固体,在高温炉内600℃下脱除结晶水,测得高熵磷酸盐一次颗粒粒径为74nm。
实施例3
本实施例的纳米级高熵磷酸盐的制备方法,该方法包括以下步骤:
(1)配制溶液:按铁+锰+铝+镁和磷元素化学计量比1:1.2,称取氯化铁、硫酸亚锰、硫酸铝、硫酸镁、磷酸二氢铵,并分别配制成0.67mol/L的氯化铁溶液A,1mol/L的硫酸亚锰溶液B,0.5mol/L的硫酸铝溶液C,0.67mol/L的硫酸镁溶液D,4mo/L的磷酸二氢铵溶液 E;
(2)沉淀反应:在均质机5000rpm搅拌和超声分散的状态下,同时将A、B、C、D、E 加入,温度80℃,反应2min,得到高熵磷酸盐料浆;
(3)固液分离:将步骤(2)得到的料浆在真空抽滤机上进行固液分离、洗涤,得到分离后的固体;
(4)干燥:将步骤(3)得到的固体在鼓风干燥箱内干燥,干燥温度105℃,得到一种小颗粒一水高熵磷酸盐;
(5)焙烧脱水:将步骤(4)得到的固体,在高温炉内600℃下脱除结晶水,测得高熵磷酸盐一次颗粒粒径为62nm。
实施例4
本实施例的纳米级高熵磷酸盐的制备方法,该方法包括以下步骤:
(1)配制溶液:按铁+锰+铝+镁和磷元素化学计量比1:1.05,称取硫酸铁、硫酸亚锰、硫酸铝、硫酸镁、磷酸一氢钠,并分别配制成0.5mol/L的硫酸铁溶液A,0.5mol/L的硫酸亚锰溶液B,0.5mol/L的硫酸铝溶液C,0.5mol/L的硫酸镁溶液D,4mo/L的磷酸一氢钠溶液E;
(2)沉淀反应:在高剪切作用下,同时将A、B、C、D、E加入到反应器中,温度90 ℃,反应5min,得到高熵磷酸盐料浆;
(3)固液分离:将步骤(2)得到的料浆在真空抽滤机上进行固液分离、洗涤,得到分离后的固体;
(4)干燥:将步骤(3)得到的固体在鼓风干燥箱内干燥,干燥温度105℃,得到一种小颗粒一水高熵磷酸盐;
(5)焙烧脱水:将步骤(4)得到的固体,在高温炉内620℃下脱除结晶水,测得高熵磷酸盐一次颗粒粒径为89nm。
将实施例1至4得到的高熵磷酸盐用于制备锂电池正极材料,相比现有技术CN201711387640.2得到的高熵磷酸盐,本发明的高熵磷酸盐具有较高的活性。
实施例5
本实施例的纳米级高熵磷酸盐的制备方法,该方法包括以下步骤:
(1)配制溶液:按铁+锰+铝+镁和磷元素化学计量比1:1.05,称取硫酸铁、硫酸亚锰、硫酸铝、硫酸镁、磷酸一氢钠,并分别配制成0.5mol/L的硫酸铁溶液A,0.5mol/L的硫酸亚锰溶液B,0.5mol/L的硫酸铝溶液C,0.5mol/L的硫酸镁溶液D,4mo/L的磷酸一氢钠溶液E;
(2)沉淀反应:在高剪切作用下,同时将A、B、C、D、E加入到反应器中,温度90 ℃,反应5min,得到高熵磷酸盐料浆;
(3)固液分离:将步骤(2)得到的料浆在真空抽滤机上进行固液分离、洗涤,得到分离后的固体;
(4)干燥:将步骤(3)得到的固体在鼓风干燥箱内干燥,干燥温度105℃,得到一种小颗粒结晶水高熵磷酸盐;
(5)焙烧脱水:将步骤(4)得到的固体,在高温炉内650℃下脱除结晶水,测得高熵磷酸盐一次颗粒粒径为75nm。
对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何标记视为限制所涉及的权利要求。
Claims (10)
1.一种纳米级高熵磷酸盐的制备方法,其特征在于,包括:
配制金属元素种类不少于四种的包含第二主族、第三主族及副族金属元素的盐溶液或碱溶液或氧化物悬浊液,以及磷源溶液的步骤;
将上述的溶液或悬浊液在高速搅拌的前提下反应,得到高熵磷酸盐料浆的步骤;
以及将高熵磷酸盐料浆过滤、洗涤、干燥、焙烧脱水后,得到无水高熵磷酸盐的步骤。
2.根据权利要求1所述的纳米级高熵磷酸盐的制备方法,其特征在于,包括以下步骤:
(1)配制溶液:称取第二主族、第三主族及副族金属盐、碱或氧化物配制金属盐溶液,称取磷源配制磷源溶液,其中所述金属元素和磷元素化学计量比为1:(0.95-2.0),优选1:(1.0-1.5);
(2)沉淀反应:在分子级别瞬时混匀的状态下,将金属盐溶液和磷源溶液充分混合,温度40~200℃,优选70-120℃;反应0s~300min,得到高熵磷酸盐料浆;
(3)固液分离:将步骤(2)得到的料浆进行固液分离、洗涤,得到分离后的固体;
(4)干燥:将步骤(3)得到的固体干燥,得到小颗粒含结晶水的高熵磷酸盐;
(5)焙烧脱水:将步骤(4)得到的固体,进一步在高温条件下脱除结晶水,得到小颗粒纳米级高熵磷酸盐。
3.根据权利要求2所述的纳米级高熵磷酸盐的制备方法,其特征在于,步骤(1)中所述金属盐为可溶性镁盐、铝盐、铁盐、锰盐、镍盐、钴盐、中的至少四种以上且必须含有铁盐。
4.根据权利要求3所述的纳米级高熵磷酸盐的制备方法,其特征在于,步骤(1)中所述磷源为磷酸、磷酸二氢钠、磷酸一氢钠、磷酸钠、磷酸二氢铵、磷酸一氢铵、磷酸铵、磷酸二氢钾、磷酸一氢钾、磷酸钾中的一种或多种。
5.根据权利要求2所述的纳米级高熵磷酸盐的制备方法,其特征在于,可溶性铁盐为硫酸铁或氯化铁;可溶性铝盐为偏铝酸钠、硫酸铝或硝酸铝;可溶性镁盐为硫酸镁或硝酸镁;可溶性镍盐为硫酸镍或硝酸镍;可溶性钴盐为硫酸钴或硝酸钴;可溶性锰盐为硫酸亚锰或硝酸亚锰。
6.根据权利要求2所述的纳米级高熵磷酸盐的制备方法,其特征在于,金属元素包含有铁元素、镁元素、铝元素和锰元素,所述可溶性铁盐、可溶性镁盐、可溶性铝盐和可溶性锰盐的摩尔比为1:1:1:1。
7.根据权利要求2所述的纳米级高熵磷酸盐的制备方法,其特征在于,步骤(2)中所述的高速搅拌为高速旋转喷雾溅射、均质、超声、高剪切、微反应中的一种或多种。
8.根据权利要求2所述的纳米级高熵磷酸盐的制备方法,其特征在于,所述可溶性铁盐、可溶性铝盐浓度均为2~3mol/L;所述可溶性镍盐、可溶性钴盐、可溶性镁盐浓度均为1~2mol/L。
9.权利要求1至8任一项所述的制备方法得到的纳米级高熵磷酸盐。
10.由权利要求9得到的纳米级高熵磷酸盐在催化剂、粘合剂、锂电池中的应用。
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