CN108736063A - 锡基掺铋石榴石型固体电解质材料的制备方法 - Google Patents
锡基掺铋石榴石型固体电解质材料的制备方法 Download PDFInfo
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- 239000007784 solid electrolyte Substances 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229910052797 bismuth Inorganic materials 0.000 title claims description 11
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims description 11
- 206010007247 Carbuncle Diseases 0.000 title claims description 8
- 238000000498 ball milling Methods 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 150000001622 bismuth compounds Chemical class 0.000 claims abstract description 7
- 239000003792 electrolyte Substances 0.000 claims abstract description 7
- 150000002604 lanthanum compounds Chemical class 0.000 claims abstract description 7
- 150000002642 lithium compounds Chemical class 0.000 claims abstract description 7
- 150000003606 tin compounds Chemical class 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 238000005245 sintering Methods 0.000 claims description 15
- 239000002001 electrolyte material Substances 0.000 claims description 11
- 229910001451 bismuth ion Inorganic materials 0.000 claims description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 7
- 229910001416 lithium ion Inorganic materials 0.000 claims description 7
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 5
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 5
- 229910021626 Tin(II) chloride Inorganic materials 0.000 claims description 4
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 4
- 229910017569 La2(CO3)3 Inorganic materials 0.000 claims description 3
- 239000007772 electrode material Substances 0.000 claims description 3
- CZMAIROVPAYCMU-UHFFFAOYSA-N lanthanum(3+) Chemical compound [La+3] CZMAIROVPAYCMU-UHFFFAOYSA-N 0.000 claims description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 3
- 229910001947 lithium oxide Inorganic materials 0.000 claims description 3
- 229910001432 tin ion Inorganic materials 0.000 claims description 3
- -1 waltherite Chemical compound 0.000 claims description 3
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 claims description 2
- QYIGOGBGVKONDY-UHFFFAOYSA-N 1-(2-bromo-5-chlorophenyl)-3-methylpyrazole Chemical compound N1=C(C)C=CN1C1=CC(Cl)=CC=C1Br QYIGOGBGVKONDY-UHFFFAOYSA-N 0.000 claims description 2
- KKMOSYLWYLMHAL-UHFFFAOYSA-N 2-bromo-6-nitroaniline Chemical compound NC1=C(Br)C=CC=C1[N+]([O-])=O KKMOSYLWYLMHAL-UHFFFAOYSA-N 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- MQRWBMAEBQOWAF-UHFFFAOYSA-N acetic acid;nickel Chemical compound [Ni].CC(O)=O.CC(O)=O MQRWBMAEBQOWAF-UHFFFAOYSA-N 0.000 claims description 2
- 229940049676 bismuth hydroxide Drugs 0.000 claims description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 2
- TZSXPYWRDWEXHG-UHFFFAOYSA-K bismuth;trihydroxide Chemical compound [OH-].[OH-].[OH-].[Bi+3] TZSXPYWRDWEXHG-UHFFFAOYSA-K 0.000 claims description 2
- FQEZLJDDYYNLPP-UHFFFAOYSA-N carbonic acid;tin Chemical compound [Sn].OC(O)=O FQEZLJDDYYNLPP-UHFFFAOYSA-N 0.000 claims description 2
- FIMTUWGINXDGCK-UHFFFAOYSA-H dibismuth;oxalate Chemical compound [Bi+3].[Bi+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O FIMTUWGINXDGCK-UHFFFAOYSA-H 0.000 claims description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 2
- YNQRWVCLAIUHHI-UHFFFAOYSA-L dilithium;oxalate Chemical compound [Li+].[Li+].[O-]C(=O)C([O-])=O YNQRWVCLAIUHHI-UHFFFAOYSA-L 0.000 claims description 2
- NZPIUJUFIFZSPW-UHFFFAOYSA-H lanthanum carbonate Chemical compound [La+3].[La+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O NZPIUJUFIFZSPW-UHFFFAOYSA-H 0.000 claims description 2
- 229960001633 lanthanum carbonate Drugs 0.000 claims description 2
- OXHNIMPTBAKYRS-UHFFFAOYSA-H lanthanum(3+);oxalate Chemical compound [La+3].[La+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O OXHNIMPTBAKYRS-UHFFFAOYSA-H 0.000 claims description 2
- JLRJWBUSTKIQQH-UHFFFAOYSA-K lanthanum(3+);triacetate Chemical compound [La+3].CC([O-])=O.CC([O-])=O.CC([O-])=O JLRJWBUSTKIQQH-UHFFFAOYSA-K 0.000 claims description 2
- YXEUGTSPQFTXTR-UHFFFAOYSA-K lanthanum(3+);trihydroxide Chemical compound [OH-].[OH-].[OH-].[La+3] YXEUGTSPQFTXTR-UHFFFAOYSA-K 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 229940071264 lithium citrate Drugs 0.000 claims description 2
- WJSIUCDMWSDDCE-UHFFFAOYSA-K lithium citrate (anhydrous) Chemical compound [Li+].[Li+].[Li+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O WJSIUCDMWSDDCE-UHFFFAOYSA-K 0.000 claims description 2
- XKPJKVVZOOEMPK-UHFFFAOYSA-M lithium;formate Chemical compound [Li+].[O-]C=O XKPJKVVZOOEMPK-UHFFFAOYSA-M 0.000 claims description 2
- 229940078494 nickel acetate Drugs 0.000 claims description 2
- 235000011150 stannous chloride Nutrition 0.000 claims description 2
- 239000001119 stannous chloride Substances 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910001887 tin oxide Inorganic materials 0.000 claims description 2
- ALHBQZRUBQFZQV-UHFFFAOYSA-N tin;tetrahydrate Chemical compound O.O.O.O.[Sn] ALHBQZRUBQFZQV-UHFFFAOYSA-N 0.000 claims description 2
- YJGJRYWNNHUESM-UHFFFAOYSA-J triacetyloxystannyl acetate Chemical compound [Sn+4].CC([O-])=O.CC([O-])=O.CC([O-])=O.CC([O-])=O YJGJRYWNNHUESM-UHFFFAOYSA-J 0.000 claims description 2
- 244000025254 Cannabis sativa Species 0.000 claims 1
- 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 claims 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims 1
- 238000006555 catalytic reaction Methods 0.000 claims 1
- 238000005660 chlorination reaction Methods 0.000 claims 1
- 229910052746 lanthanum Inorganic materials 0.000 claims 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims 1
- 229910017604 nitric acid Inorganic materials 0.000 claims 1
- 238000007873 sieving Methods 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 239000002223 garnet Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 10
- 229910003480 inorganic solid Inorganic materials 0.000 description 9
- 238000002791 soaking Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000011244 liquid electrolyte Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 239000005338 frosted glass Substances 0.000 description 3
- 239000010416 ion conductor Substances 0.000 description 3
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 description 3
- 229910002249 LaCl3 Inorganic materials 0.000 description 2
- 229910010685 Li5La3M2O12 Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- AXZWODMDQAVCJE-UHFFFAOYSA-L tin(II) chloride (anhydrous) Chemical compound [Cl-].[Cl-].[Sn+2] AXZWODMDQAVCJE-UHFFFAOYSA-L 0.000 description 2
- NGCDGPPKVSZGRR-UHFFFAOYSA-J 1,4,6,9-tetraoxa-5-stannaspiro[4.4]nonane-2,3,7,8-tetrone Chemical compound [Sn+4].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O NGCDGPPKVSZGRR-UHFFFAOYSA-J 0.000 description 1
- 229910000014 Bismuth subcarbonate Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910020854 La(OH)3 Inorganic materials 0.000 description 1
- 229910011140 Li2C2 Inorganic materials 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910000417 bismuth pentoxide Inorganic materials 0.000 description 1
- PPNKDDZCLDMRHS-UHFFFAOYSA-N bismuth(III) nitrate Inorganic materials [Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PPNKDDZCLDMRHS-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 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 1
- 239000013078 crystal Substances 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000002847 impedance measurement Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- XIXADJRWDQXREU-UHFFFAOYSA-M lithium acetate Chemical compound [Li+].CC([O-])=O XIXADJRWDQXREU-UHFFFAOYSA-M 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000003836 solid-state method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910001407 tin (II) carbonate Inorganic materials 0.000 description 1
- 229910021509 tin(II) hydroxide Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/54—Electrolytes
- H01G11/56—Solid electrolytes, e.g. gels; Additives therein
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
- H01M2300/0071—Oxides
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- 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
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- Condensed Matter Physics & Semiconductors (AREA)
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Abstract
本发明公开了一种掺杂Bi5+的锡基石榴石型固体电解质材料及其制备方法。材料的化学成分为Li7‑xLa3Sn2‑xBixO12,其中0<x<2。分别称取锂化合物、镧化合物、锡化合物和铋化合物,进行混合球磨;将球磨后的材料进行预烧;对预烧后的材料研磨成粉、过筛,并压片制样;将制得的样品再次烧结,得到高电导率立方相石榴石型结构的电解质材料。本发明工艺简单,合成温度低,具有较好的电化学稳定性,较宽的电化学窗口,低的电子电导,是一种理想的高电导的固体电解质材料。
Description
技术领域
本发明涉及新能源材料制备技术,具体涉及锡基掺铋石榴石型固体电解质材料制备方法。
背景技术
近年来随着电动汽车的快速发展以及电网储能的发展,人们对于较宽使用温度范围、高能量密度和高安全性的二次电池的需求更加迫切。商业化的锂离子电池普遍采用有机液态电解液,但是有机液态电解液具有挥发性和易燃性。固态电解质可以避免液态电解液所带来的一系列安全问题而备受关注,采用固体电解质取代液态电解液的全固态电池具有以下优势:安全性能高、能量密度高、循环寿命长、工作温度范围宽、电化学窗口宽、具有柔性。
固体电解质根据材料的组成可以分为无机固体电解质和聚合物固体电解质材料。无机固体电解质较聚合物电解质具有更高的机械性能和热稳定性,确保了全固态电池具有更广泛的应用领域。无机固体电解质具有以下几个方面的优点:(1)无机固体电解质中不存在液态电解液,不存在电解液泄露引起的安全问题。(2)无机固态电解质具有宽的工作温度范围,可用于高温和低温等较恶劣的工作环境。(3)无机固体电解质具有较宽的电化学窗口,一般无机固体电解质的电化学窗口在5V以上,可以适用于更多的电极材料。(4)无机固体电解质具有高的电化学稳定性,电解质与电极材料的副反应较为缓慢,保证电池具有较好的循环稳定性。(5)无机固体电解质具有优异的机械加工性能,制作简单,可以制成任意需要的性状。
目前,常见的氧化物固体电解质主要包括:钠快离子导体型结构、锂快离子导体型结构、石榴石型结构和钙钛矿型结构。而石榴石结构由于制备温度低,离子电导率高为人们所关注。理想的石榴石型结构的通式为A3B2(XO)3,其结构主要有四方相和立方相,通过调节A和B阳离子的化合价获得立方相的石榴石,从而提高室温下离子电导率。不同的化学计量的石榴石型锂离子导体如文献:Thangadurai V,Narayanan S,Pinzaru D.ChemicalSociety Reviews,2014,43(13):4714报道,Li3Ln3Te2O12(Ln=Y,Pr,Nd,Sm),Li5La3M2O12(M=Nb,Ta,Sb),Li6ALa2M2O12(A=Mg,Ca,Sr,Ba;M=Nb,Ta)和Li7La3M2O12(M=Zr,Sn)。文献:Edmund J.Cussen,Thomas W.S.Yip,Gemma O’Neill,Michael P.O’Callaghan,Journal ofSolid State Chemistry,2011,184:470中提到,Li3Ln3Te2O12中的锂离子只存在四面体位置,因此其离子电导率较低。在石榴石型结构中,采用M5+得到Li5La3M2O12,并且可引入额外锂离子,增大离子电导率。因此,开发具有立方相的,晶体结构稳定,室温电导率高的石榴石结构固体电解质意义重大。
发明内容
本发明的目的在于提供了一种锡基掺铋固体电解质材料制备方法,本发明具体实施的技术方案如下:
1.所述方法以锂化合物、镧化合物、铋化合物、锡化合物为原料,采用高温固相法,两步烧制工艺过程。其特征在于:按配比称取锂化合物、镧化合物、锡化合物和铋化合物,进行混合球磨;将球磨后的材料进行预烧;对预烧后的材料研磨成粉,并压片制样;将制得的样品再次烧结,得到高电导率立方相石榴石型结构的锡基掺铋电解质Li7-xLa3Sn2-xBixO12材料。
2.上述1项中所述的锂化合物、镧化合物、锡化合物和铋化合物是指对应盐、氧化物及对应氢氧化物。锂化合物包括氧化锂、碳酸锂、草酸锂、醋酸镍、甲酸锂、柠檬酸锂和氢氧化锂中的一种或两种;镧化合物包括氧化镧、氯化镧、碳酸镧、草酸镧、醋酸镧和氢氧化镧中的一种或两种;锡化合物包括氧化锡、碳酸锡、草酸锡、醋酸锡、氯化亚锡和氢氧化锡中的一种或两种;铋化合物包括氧化铋、碳酸铋、硝酸铋、草酸铋、醋酸铋、柠檬酸铋和氢氧化铋中的一种或两种。
3.上述1项中所述的锡基掺铋石榴石型固体电解质材料,其化学成分为Li7- xLa3Sn2-xBixO12,其中,0<x<2.0。
4.上述1项和3项中所述的锡基掺铋石榴石型固体电解质材料中,以铋离子摩尔量为基,计算锂离子、镧离子、锡离子的摩尔比例。
5.上述1项和3项中所述的锡基掺铋石榴石型固体电解质材料中,铋离子摩尔量x为0.01-1.99。锂离子:铋离子摩尔比为(7-x):x;镧离子:铋离子摩尔比为3:x;锡离子:铋离子摩尔比为(2-x):x。
6.上述1项中所述球磨为高能机械球磨,所述的转速为300rpm-500rpm,球磨时间为5-40小时。优选转速为350rpm-450rpm,球磨时间为10-35小时,更优选转速为350rpm-400rpm,球磨时间为20-30小时。
7.上述1项中所述预烧气氛为空气,预烧温度为600-900℃,预烧时间为5-40小时。优选预烧温度为650-850℃,预烧时间为10-35小时。更优选预烧温度为700-800℃,预烧时间为10-20小时。
8.上述1项中所述研磨成粉后,选用150~500目的筛子筛选出粉末。优选用200~450目的筛子筛选出粉末。更优选用250-300目的筛子筛选出粉末。
9.上述1项所述的压片过程中,制样的压力为10-50Mpa,保压时间为1-30分钟。优选制样压力为15-40Mpa,保压时间为5-25分钟。更优选制样压力为20-30Mpa,保压时间为5-15分钟。
10.上述1项所述的再次烧结温度为700-950℃,所述的烧结时间为5-40小时。优选烧结温度为750-900℃,所述的烧结时间为10-30小时。更优选烧结温度为800-900℃,所述的烧结时间为15-20小时。
附图说明
图1为实施例1所制备的石榴石型固体电解质Li6.25La3Sn1.25Bi0.75O12的XRD图。
图2为实施例1所制备的石榴石型固体电解质Li6.25La3Sn1.25Bi0.75O12的SEM照片。
图3为实施例1所制备的石榴石型固体电解质Li6.25La3Sn1.25Bi0.75O12的交流阻抗图。
具体实施方式
实施例1
将Li2CO3、La2O3、SnO2、Bi2O5的按照如下比例进行混合,其中x=0.75,Li:Bi=6.25:0.75,La:Bi=3:0.75,Sn:Bi=1.25:0.75,采用高能球磨机球磨,转速为400rpm,时间为24小时,得到混合料。将混合料置于高温电炉中,在750℃下保温30小时进行预烧。将预烧料研磨后采用250目的筛子筛过。将所获得的粉料放置于直径为10mm的压片模具中,在30Mpa的压力下保持压力10分钟压制成片。后将其放入到高温电炉中,空气氛围,烧结温度为800℃,保温时间为24小时,即得到石榴石型电解质材料Li6.25La3Sn1.25Bi0.75O12。
将实施例1中制备得到的固体电解质进行XRD分析,XRD图示于图1。图2为电解质材料Li6.25La3Sn1.25Bi0.75O12的断面SEM照片。对所制备的电解质材料Li6.25La3Sn1.25Bi0.75O12进行交流阻抗测试,测试结果示于图3,在20℃下的离子电导率为0.42×10-4S/cm,在60℃下电导率为2.25×10-4S/cm。
实施例2
将Li2O、La2(CO3)3、SnC2O4、Bi(NO3)3的按照如下比例进行混合,其中x=0.01,Li:Bi=6.99:0.01,La:Bi=3:0.01,Sn:Bi=1.99:0.01,采用高能球磨机球磨,转速为500rpm,时间为40小时,得到混合料。将混合料置于高温电炉中,在900℃下保温40小时进行预烧。将预烧料研磨后采用250目的筛子筛过。将所获得的粉料放置于直径为10mm的压片模具中,在50Mpa的压力下保持压力1分钟压制成片。后将其放入到高温电炉中,空气氛围,烧结温度为950℃,保温时间为40小时,即得到石榴石型电解质材料Li6.99La3Sn1.99Bi0.01O12。
实施例3
将Li2C2O4、La(OH)3、SnCO3、(BiO)2CO3的按照如下比例进行混合,其中x=1.99,Li:Bi=5.01:1.99,La:Bi=3:1.99,Sn:Bi=0.01:1.99,采用高能球磨机球磨,转速为300rpm,时间为5小时,得到混合料。将混合料置于高温电炉中,在600℃下保温5小时进行预烧。将预烧料研磨后采用250目的筛子筛过。将所获得的粉料放置于直径为10mm的压片模具中,在10Mpa的压力下保持压力30分钟压制成片。后将其放入到高温电炉中,空气氛围,烧结温度为700℃,保温时间为5小时,即得到石榴石型电解质材料Li5.01La3Sn0.01Bi1.99O12。
实施例4
将CH3COOLi、LaCl3、SnCl2、Bi2(C2O4)3.7H2O的按照如下比例进行混合,其中x=0.5,Li:Bi=6.5:0.5,La:Bi=3:0.5,Sn:Bi=1.5:0.5,采用高能球磨机球磨,转速为400rpm,时间为24小时,得到混合料。将混合料置于高温电炉中,在750℃下保温30小时进行预烧。将预烧料研磨后采用250目的筛子筛过。将所获得的粉料放置于直径为10mm的压片模具中,在30Mpa的压力下保持压力10分钟压制成片。后将其放入到高温电炉中,空气氛围,烧结温度为800℃,保温时间为36小时,即得到石榴石型电解质材料Li6La3SnBiO12。
实施例5
将LiOH、La2(C2O4)3、Sn(CH3COO)2、C6H5BiO7的按照如下比例进行混合,其中x=1.45,Li:Bi=5.55:1.45,La:Bi=3:1.45,Sn:Bi=0.55:1.45,采用高能球磨机球磨,转速为400rpm,时间为24小时,得到混合料。将混合料置于高温电炉中,在750℃下保温30小时进行预烧。将预烧料研磨后采用250目的筛子筛过。将所获得的粉料放置于直径为10mm的压片模具中,在30Mpa的压力下保持压力10分钟压制成片。后将其放入到高温电炉中,空气氛围,烧结温度为800℃,保温时间为24小时,即得到石榴石型电解质材料Li5.55La3Sn0.55Bi1.45O12。
实施例6
将CHLiO2·H2O、La(CH3COO)3、Sn(OH)2、Bi(CH3COO)3的按照如下比例进行混合,其中x=1.75,Li:Bi=5.25:1.75,La:Bi=3:1.75,Sn:Bi=0.25:1.75,采用高能球磨机球磨,转速为400rpm,时间为24小时,得到混合料。将混合料置于高温电炉中,在750℃下保温30小时进行预烧。将预烧料研磨后采用250目的筛子筛过。将所获得的粉料放置于直径为10mm的压片模具中,在30Mpa的压力下保持压力10分钟压制成片。后将其放入到高温电炉中,空气氛围,烧结温度为750℃,保温时间为36小时,即得到石榴石型电解质材料Li6.5La3Sn1.5Bi0.5O12。
实施例7
将C6H5Li3O7、LaCl3、SnCl2、Bi(OH)3的按照如下比例进行混合,其中x=0.5,Li:Bi=6.5:0.5,La:Bi=3:0.5,Sn:Bi=1.5:0.5,采用高能球磨机球磨,转速为400rpm,时间为24小时,得到混合料。将混合料置于高温电炉中,在750℃下保温30小时进行预烧。将预烧料研磨后采用250目的筛子筛过。将所获得的粉料放置于直径为10mm的压片模具中,在30Mpa的压力下保持压力10分钟压制成片。后将其放入到高温电炉中,空气氛围,烧结温度为800℃,保温时间为36小时,即得到石榴石型电解质材料Li6La3SnBiO12。
以上已对本发明的较佳实施例进行了具体说明,但本发明并不限于所述实施例,熟悉本领域的技术人员在不违背本发明精神的前提下还可作出种种的等同的变型或替换,这些等同的变型或替换均包含在本申请权利要求所限定的范围内。
Claims (5)
1.高离子电导率的石榴石型电解质材料的制备方法,其特征在于,包括以下步骤:将锂化合物、镧化合物、锡化合物和铋化合物进行混合球磨;将混合得到的混合料,在高温电炉进行预烧处理;得到的预烧料研磨,过筛,进行压片制样;之后再次烧结,得到高离子电导率的电解质材料。
2.根据权利要求1所述的高离子电导率石榴石型电解质材料,其特征在于,其化学成分为Li7-xLa3Sn2-xBixO12,其中0<x<2;上述1项中所述的锡基掺铋石榴石型固体电解质材料中,铋离子摩尔量x为0.01-1.99,锂离子:铋离子摩尔比为(7-x):x,镧离子:铋离子摩尔比为3:x,锡离子:铋离子摩尔比为(2-x):x。
3.根据权利要求1所述的制备方法,其特征在于,所述的锂化合物包括氧化锂、碳酸锂、草酸锂、醋酸镍、甲酸锂、柠檬酸锂和氢氧化锂中的一种或两种;镧化合物包括氧化镧、氯化镧、碳酸镧、草酸镧、醋酸镧和氢氧化镧中的一种或两种;锡化合物包括氧化锡、碳酸锡、草酸锡、醋酸锡、氯化亚锡和氢氧化锡中的一种或两种;铋化合物包括氧化铋、碳酸铋、硝酸铋、草酸铋、醋酸铋、柠檬酸铋和氢氧化铋中的一种或两种。
4.根据权利要求1所述的制备方法,其特征在于,所述的球磨为高能机械球磨,转速为300rpm~500rpm,所述的球磨时间为5~40小时,制样的压力为10~50Mpa,保压时间为1~30分钟,预烧温度为600-900℃,预烧时间为5~40小时,所述的再次烧结温度为700℃~950℃,烧结时间为5~40小时。
5.根据权利要求1所述的高离子电导率的石榴石型电解质材料在锂、钠、钾离子电池、超级电容器和电催化中作为电极材料的用途。
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