KR101628884B1 - 알칼리금속 티탄산염의 제조 방법 - Google Patents
알칼리금속 티탄산염의 제조 방법 Download PDFInfo
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- KR101628884B1 KR101628884B1 KR1020117013047A KR20117013047A KR101628884B1 KR 101628884 B1 KR101628884 B1 KR 101628884B1 KR 1020117013047 A KR1020117013047 A KR 1020117013047A KR 20117013047 A KR20117013047 A KR 20117013047A KR 101628884 B1 KR101628884 B1 KR 101628884B1
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- lithium
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- titanate
- lithium titanate
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- 238000000034 method Methods 0.000 title claims description 42
- 230000008569 process Effects 0.000 title claims description 30
- 229910052783 alkali metal Inorganic materials 0.000 title abstract description 16
- 150000001340 alkali metals Chemical class 0.000 title description 5
- 239000010936 titanium Substances 0.000 claims abstract description 74
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 70
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 67
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000002002 slurry Substances 0.000 claims abstract description 58
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 32
- -1 alkali metal titanate Chemical class 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 65
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000013078 crystal Substances 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 26
- 238000000634 powder X-ray diffraction Methods 0.000 claims description 21
- IYVLHQRADFNKAU-UHFFFAOYSA-N oxygen(2-);titanium(4+);hydrate Chemical compound O.[O-2].[O-2].[Ti+4] IYVLHQRADFNKAU-UHFFFAOYSA-N 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 16
- GROMGGTZECPEKN-UHFFFAOYSA-N sodium metatitanate Chemical compound [Na+].[Na+].[O-][Ti](=O)O[Ti](=O)O[Ti]([O-])=O GROMGGTZECPEKN-UHFFFAOYSA-N 0.000 claims description 16
- 239000004408 titanium dioxide Substances 0.000 claims description 16
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 9
- 150000002642 lithium compounds Chemical class 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims description 3
- XVIWVTWNQQUGQI-UHFFFAOYSA-L disodium;sulfanylidenemethanediolate Chemical compound [Na+].[Na+].[O-]C([O-])=S XVIWVTWNQQUGQI-UHFFFAOYSA-L 0.000 claims description 3
- 230000003301 hydrolyzing effect Effects 0.000 claims description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 2
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims 2
- 238000001914 filtration Methods 0.000 claims 1
- 150000007522 mineralic acids Chemical class 0.000 claims 1
- 150000001339 alkali metal compounds Chemical class 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 6
- 239000000047 product Substances 0.000 description 44
- 238000004458 analytical method Methods 0.000 description 17
- 239000011734 sodium Substances 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 14
- 229910010413 TiO 2 Inorganic materials 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 13
- 229910052708 sodium Inorganic materials 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 238000002441 X-ray diffraction Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 150000003609 titanium compounds Chemical class 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound 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 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical group Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- 229910012672 LiTiO Inorganic materials 0.000 description 5
- 239000007790 solid phase Substances 0.000 description 5
- 239000007858 starting material Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000002050 diffraction method Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 229910000349 titanium oxysulfate Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910018136 Li 2 Ti 3 O 7 Inorganic materials 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000003868 ammonium compounds Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000007810 chemical reaction solvent Substances 0.000 description 1
- XFVGXQSSXWIWIO-UHFFFAOYSA-N chloro hypochlorite;titanium Chemical compound [Ti].ClOCl XFVGXQSSXWIWIO-UHFFFAOYSA-N 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- LWXVCCOAQYNXNX-UHFFFAOYSA-N lithium hypochlorite Chemical compound [Li+].Cl[O-] LWXVCCOAQYNXNX-UHFFFAOYSA-N 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 150000003746 yttrium Chemical class 0.000 description 1
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- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
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- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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Abstract
Description
도 2는 화학식이 LixTiyOz(여기서 몰 비율 x:y는 1.5임)인 티탄산리튬 생성물의 X선 분말 회절 분석도이다. 도 2A는 (150℃에서 건조), 도 2B (200℃에서 건조).
도 3은 화학식이 LixTiyOz(여기서 몰 비율 x:y는 1.42 및 1.39이고, 이와 동시에 z:y 몰 비율은 두 개의 샘플 모두에서 3.4이다)인 티탄산리튬 생성물의 X선 분말 회절 분석도이다. 도 3A (25℃에서 반응) 및 도 3B (60℃에서 반응).
도 4는 Li:Ti 비율이 0.82이며 실온에서 제조된 생성물의 X선 분말 회절 분석도이다.
도 5는 Li:Ti 비율이 0.82이며 60℃에서 제조된 생성물의 X선 분말 회절 분석도이다.
도 6은 Li:Ti 비율이 2.0이며 실온에서 제조된 생성물의 X선 분말 회절 분석도이다.
도 7은 Li:Ti 비율이 2.0이며 60℃에서 제조된 생성물의 X선 분말 회절 분석도이다.
도 8은 Li:Ti 비율이 1.5와 2.0이며 50℃에서 40분간, 및 60℃에서 90분간의 조건에서 제조된 생성물의 X선 분말 회절 분석도이다.
도 9는 NaxTiyOz 화합물의 X선 분말 회절 분석도이다.
도 10은 실온(A)과 60℃(B)에서 건조된 생성물의 X선 분말 회절 분석도이다.
도 11은 생성물의 결정 크기에 미치는 하소 온도의 영향을 도시한 도면이다.
Claims (21)
- (i) 티타늄-함유 수성 슬러리를 제조하는 단계,
(ii) 상기 제조된 슬러리를 리튬 화합물과 혼합하여 혼합물을 형성하는 단계,
(iii) 상기 형성된 혼합물을 20-100℃의 온도에서 통상의 압력 하에 최대 20 시간 동안 교반함으로써, 티탄산리튬이 되도록 반응시키는 단계, 및
(iv) 상기 제공된 결정성 티탄산리튬 화합물을 건조하는 단계
를 포함하는 것을 특징으로 하는, 티탄산리튬 화합물의 제조방법. - 제1항에 있어서, 단계 (iii)에서 혼합물을 최대 75℃의 온도에서, 티탄산리튬이 되도록 반응시키는 것이 특징인 방법.
- 제1항에 있어서 단계 (iii)에서 혼합물을 최소 30℃의 온도에서 티탄산리튬이 되도록 반응시키는 것이 특징인 방법.
- 제1항에 있어서, 단계 (ii)에서 수산화리튬을 티타늄-함유 수성 슬러리에 고체 형태로 첨가하는 것이 특징인 방법.
- 제1항에 있어서, 단계 (iii)에서 혼합물을 최대 3시간 동안 티탄산리튬이 되도록 반응시키는 것이 특징인 방법.
- 제1항에 있어서, 단계 (i)의 티타늄-함유 수성 슬러리는 티탄산나트륨을 함유하는 것이 특징인 방법.
- 제6항에 있어서, 티탄산나트륨은, 이산화티타늄 생산시 설페이트 공정에 의해 제공되는 이산화티타늄 수화물을 알칼리로 처리함으로써 티탄산나트륨 슬러리를 얻는 것에 의해 수득되는 것이 특징인 방법.
- 제7항에 있어서, 티탄산나트륨은, 일메나이트 농축물을 황산과 반응시켜 이산화티타늄 수화물을 가수분해시키고 이를 물에서 분급시켜 300-400 g/l의 밀도를 갖는 이산화티타늄 수화물 슬러리로 만들고, 이를 pH >11의 알칼리와 함께 비등시켜 티탄산나트륨 슬러리를 얻은 다음 이로부터 가용성 설페이트 염을 수세하여 제거한 후 여과시킴으로써 수득되는 것이 특징인 방법.
- 제6항 내지 제8항 중 어느 하나의 항에 있어서, 티탄산나트륨을 물에서 분급시켜 밀도가 100-800 g/l인 슬러리로 만드는 것이 특징인 방법.
- 제1항 내지 제5항 중 어느 하나의 항에 있어서, 단계 (i)의 티타늄-함유 수성 슬러리는 이산화티타늄 생산시 설페이트 공정에 의해 제공되는 티타닐 클로라이드로부터 제조되는 것이 특징인 방법.
- 제1항 내지 제5항 중 어느 하나의 항에 있어서, 단계 (i)의 티타늄-함유 수성 슬러리는, 이산화티타늄 생산시 일메나이트 농축물로부터 설페이트 공정에 의해 황산에 의해 제공되는 티타닐 클로라이드를 열가수분해시켜 이산화티타늄 수화물을 얻은 다음 이를 물에서 분급시켜(elutriated) 밀도가 300-400 g/l인 이산화티타늄 수화물 슬러리를 얻음으로써 제조되는 것이 특징인 방법.
- 제1항 내지 제5항 중 어느 하나의 항에 있어서, 단계 (iv)에서 제공되는 티탄산리튬 화합물은 250℃ 미만에서 건조되는 것인 방법.
- 제1항 내지 제5항 중 어느 하나의 항에 있어서, 건조된 티탄산리튬 화합물을 500-1050℃의 온도에서 열처리에 의해 추가 가공하여 결정 구조를 정방형으로 만드는 것이 특징인 방법.
- 제4항에 있어서, 수산화리튬과 티타늄 함유 수성 슬러리는 리튬:Ti 몰 비율 1.1-2.0의 몰 비율로 혼합되는 것이 특징인 방법.
- 제1항 내지 제5항 중 어느 하나의 항에 기재된 방법에 따라 제조되고;
LixTiyOz의 화학식을 가지며 (식 중, x:y의 몰 비율은 1.1 내지 1.8이고 z:y의 몰 비율은 2.0 내지 4.5임);
결정 크기는 15 내지 40 nm이고;
비표면적 BET는 10 내지 200 m2/g이며; 및
입도 분포 d50은 15㎛ 이하이고, x선 분말 회절에서 43.7o, 63.4o, 80.1o, 96.1o, 및 112.9o (2θ) 각도에서 반사되는 것이 특징인 티탄산리튬 화합물. - 제15항에 기재된 티탄산리튬 화합물을 함유하는 것이 특징인 리튬 배터리.
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
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US9577257B2 (en) * | 2013-09-18 | 2017-02-21 | Guiqing Huang | Methods of making low cost electrode active materials for secondary batteries from ilmenite |
US20170007983A1 (en) * | 2014-02-21 | 2017-01-12 | Nippon Chemical Industrial Co., Ltd. | Method for producing nonatitanate of alkali metal |
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