CN106159220A - 两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法 - Google Patents
两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法 Download PDFInfo
- Publication number
- CN106159220A CN106159220A CN201510194106.4A CN201510194106A CN106159220A CN 106159220 A CN106159220 A CN 106159220A CN 201510194106 A CN201510194106 A CN 201510194106A CN 106159220 A CN106159220 A CN 106159220A
- Authority
- CN
- China
- Prior art keywords
- lithium
- source
- cobalt
- aluminum
- anode material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 49
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 22
- 229910011456 LiNi0.80Co0.15Al0.05O2 Inorganic materials 0.000 title claims abstract description 21
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000010405 anode material Substances 0.000 title claims abstract description 18
- -1 nickel oxide cobalt aluminum Chemical compound 0.000 claims abstract description 18
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 14
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract description 9
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 8
- 239000004094 surface-active agent Substances 0.000 claims abstract description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 33
- 239000000843 powder Substances 0.000 claims description 26
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000005245 sintering Methods 0.000 claims description 17
- 239000000725 suspension Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 15
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 229910001868 water Inorganic materials 0.000 claims description 12
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical group [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 10
- 229910017052 cobalt Inorganic materials 0.000 claims description 9
- 239000010941 cobalt Substances 0.000 claims description 9
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 9
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical group [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000003153 chemical reaction reagent Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical group OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical group [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 5
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 5
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical group [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 19
- 239000002245 particle Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract 1
- 238000001354 calcination Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 150000001868 cobalt Chemical class 0.000 abstract 1
- 239000008139 complexing agent Substances 0.000 abstract 1
- 239000002086 nanomaterial Substances 0.000 abstract 1
- 150000002815 nickel Chemical class 0.000 abstract 1
- 239000002243 precursor Substances 0.000 abstract 1
- 230000002441 reversible effect Effects 0.000 abstract 1
- 229910018632 Al0.05O2 Inorganic materials 0.000 description 16
- 229910013716 LiNi Inorganic materials 0.000 description 16
- 238000002360 preparation method Methods 0.000 description 10
- 239000008367 deionised water Substances 0.000 description 9
- 229910021641 deionized water Inorganic materials 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000000975 co-precipitation Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- 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 description 5
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 4
- 230000004087 circulation Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- PFYQFCKUASLJLL-UHFFFAOYSA-N [Co].[Ni].[Li] Chemical compound [Co].[Ni].[Li] PFYQFCKUASLJLL-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910001429 cobalt ion Inorganic materials 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 229910015701 LiNi0.85Co0.10Al0.05O2 Inorganic materials 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 2
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000186216 Corynebacterium Species 0.000 description 1
- 229910012820 LiCoO Inorganic materials 0.000 description 1
- 229910014330 LiNi1-x-yCoxAlyO2 Inorganic materials 0.000 description 1
- 229910014360 LiNi1−x−yCoxAlyO2 Inorganic materials 0.000 description 1
- 229910003005 LiNiO2 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 229940011182 cobalt acetate Drugs 0.000 description 1
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 1
- UPWOEMHINGJHOB-UHFFFAOYSA-N cobalt(III) oxide Inorganic materials O=[Co]O[Co]=O UPWOEMHINGJHOB-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- GNMQOUGYKPVJRR-UHFFFAOYSA-N nickel(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Ni+3].[Ni+3] GNMQOUGYKPVJRR-UHFFFAOYSA-N 0.000 description 1
- PZFKDUMHDHEBLD-UHFFFAOYSA-N oxo(oxonickeliooxy)nickel Chemical compound O=[Ni]O[Ni]=O PZFKDUMHDHEBLD-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000003836 solid-state method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- H01M4/362—Composites
-
- 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
- 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
-
- 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
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
本发明公开了一种两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法。先将镍盐、钴盐、铝盐与水解剂和表面活性剂一起水热反应,形成氧化镍钴铝前驱材料;然后添加锂源和络合剂得到凝胶;再在高温焙烧后得到明显层状结构、且原子排列规律有序的纳米尺度材料。本发明原材料来源广泛,操作工艺简单、所需设备成本低,煅烧温度低,节约了生产成本,合成的镍钴铝锂的粒径细小,均匀,结晶度高,使其具有较好的可逆容量和良好的循环寿命,能满足锂离子电池实际生产应用的需要。
Description
技术领域
本发明涉及一种制备锂离子电池正极材料的方法,具体涉及一种两步法技术制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,属于电池材料制备领域。
背景技术
锂离子电池相较铅酸电池而言,有着寿命长、使用安全、可快速充放电、耐高温、比容量大、绿色环保等优点,因此被广泛应用在通讯、交通等行业。锂离子电池正极材料镍钴铝锂(LiNi1-x-yCoxAlyO2,也称为NCA)是基于层状的LiCoO2、LiNiO2结构的材料,是目前正极材料研究的一个新方向。它有着高理论容量(274mAh/g)、低成本、低毒性、热稳定性好的优点,被认为非常有希望应用在高能量、高功率动力电池上,特别是电动汽车。
传统的合成镍钴铝锂的方法有高温固相法、共沉淀法、溶胶凝胶法等。高温固相法焙烧温度高时间长,浪费能源,且粒度和形貌难以控制。朱先军等(朱先军,詹晖,周运鸿.LiNi0.85Co0.10Al0.05O2正极材料合成及表征[J].稀有金属材料与工程,2005,34(12):1862-1865)将分析纯原料LiOH·H2O,Ni2O3,Co2O3和Al(OH)3按一定的计量比分别称量、混合、研磨,预烧后再研磨、压片,于氧气中725℃焙烧24h即得产物LiNi0.85Co0.10Al0.05O2。但是颗粒形貌和尺寸不均匀,所以导致循环性能较为一般。
共沉淀法制备的材料容易团聚,呈片状和多角形,物理性能不佳,实用价值不大。H.Cao等(Hui Cao,Baojia Xia,Naixin Xu,et al.Structural and electrochemicalcharacteristics of Co and Al co-doped lithium nickelate cathode materials for lithium-ionbatteries[J],Journal of Alloys and Compounds,2004,376:282-286)采用常规共沉淀法制备了LiNi0.8Co0.2-xAlxO2(0≤x≤0.2)正极材料。虽然循环性能尚可,但是初始容量较低,只有160mAh/g。
溶胶凝胶法难以控制颗粒形貌,且易形成团聚。C.J.Han等(Chang Joo Han,JangHyuk Yoon,Ho Jang,et al.Electrochemical properties of LiNi0.8Co0.2-xAlxO2prepared by asol-gel method[J].J Power Sources.2004,136:132-138)以丙稀酸为络合剂,锂、镍、钴的醋酸盐和硝酸铝为原料制备出了镍钴铝锂材料。但是由于颗粒尺寸较大,且团聚严重,所以循环性能较为一般。
目前国内合成镍钴铝锂主要采用共沉淀法和喷雾干燥法。
采用共沉淀法的有如下一些专利。中国专利CN201010624564.4公开了一种锂离子正极材料镍钴铝酸锂的制备方法,采用镍钴铝的金属盐溶液和沉淀剂沉淀合成镍钴铝前驱体。铝离子较难与镍钴离子形成均相共沉淀,很难达到镍钴铝元素均匀分布的目的,将会导致铝在镍钴铝酸锂材料中分布不均匀,影响材料的电性能,尤其是循环性能。也有在此基础上采用络合—共沉淀法制备的镍钴铝复合氢氧化物或碳酸盐沉淀,再将此前驱体与锂源按一定比例混合后,在氧气氛中高温烧结而成。例如中国专利CN20130055624.9,等。由于Al3+的引入,与镍钴难以形成单一的层状结构,晶格有序性变差,导致颗粒球形形貌变差,流动性下降,得到的前驱体振实密度较低。
采用喷雾干燥法的有如下专利。中国专利CN201410206372.X提出了一种采用两步喷雾干燥制备镍钴铝酸锂正极材料的方法。其中要配合球磨并且在氧气气氛中长时间高温焙烧,工艺复杂而且能耗很大。
中国专利CN201310697497.2提出了一种锂离子电池镍钴铝复合三元正极材料的制备方法。跟本专利相似的是,采用结晶法先形成Ni0.75Co0.15Al0.1(OH)2.05前驱体。但是该专利后续采用的是高温焙烧合成NCA最终材料。该专利并没有控制前驱体形貌,且后续采用的是固相反应法,更难以控制颗粒尺度和形貌。
发明内容
本发明的目的在于提供一种两步法技术制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法。此方法用料来源广泛,成本低,易于控制,形成的材料颗粒均匀细小,电化学性能优良。本方法可适用于工业化大规模生产。
实现本发明的技术方案为:
一种两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,包括以下实施步骤:
(1)将一定化学计量比的镍源、钴源、铝源、水解剂和表面活性剂溶于水中,在室温下搅拌得到混合溶液,将其转移入反应釜中,于110-130℃水热反应6~10h;
(2)将反应釜中沉淀取出,干燥后研磨成粉末;
(3)将所得粉末在空气中300℃烧结3~4h,自然冷却到室温,得到棒状氧化镍钴铝;
(4)将步骤(3)所得氧化镍钴铝和一定化学计量比的锂源和柠檬酸溶于水中,在室温下搅拌得到悬浊液,将此悬浊液于80~90℃水浴搅拌得到凝胶;
(5)凝胶干燥后研磨成粉末;
(6)将粉末放置在空气中750℃下烧结2~4h,自然冷却到室温,即得LiNi0.80Co0.15Al0.05O2。
其中,步骤(1)中,所述的镍源、钴源、铝源、水解剂的摩尔比为0.80:0.15:0.05:1;所述的镍源为硝酸镍;钴源为硝酸钴;铝源为硝酸铝;水解剂为草酸铵,表面活性剂为三乙醇胺;混合溶液中水解剂浓度为0.35M;表面活性剂与水的体积比例为1:40。
步骤(1)中,室温下搅拌1h;反应釜内溶液体积占40%;水热反应优选120℃下6h。
步骤(2)中,干燥采用60~80℃下真空烘干。
步骤(3)中,升温速率为5~10℃/min。
步骤(4)中,锂源、氧化镍钴铝、柠檬酸的摩尔比为1.04:1:1,锂源为硝酸锂。
步骤(5)中,干燥温度为110℃~150℃。
步骤(6)中,升温速率为5~10℃/min。
本发明与其现有技术相比,具有以下几个显著优点:(1)采用的柠檬酸法,降低了烧结温度,减少了烧结时间,节约了在生产过程中的能耗,从而大幅度降低了生产成本;(2)通过两步合成的方式得到的材料颗粒粒径均匀可控,结晶度好,一致性高,从而提升了材料的电化学性能;(3)本方法简单易行,制备工艺、所需设备较为简单,成本低,有利于大规模工业化生产。
附图说明
图1为本发明实施例1中所得的LiNi0.80Co0.15Al0.05O2的XRD图。
图2为本发明实施例1中所得的LiNi0.80Co0.15Al0.05O2的第二次充放电图。
图3为本发明实施例1中所得的LiNi0.80Co0.15Al0.05O2的循环性能图。
图4为本发明实施例1中所得的棒状Ni0.80Co0.15Al0.05O的SEM图。
图5为本发明实施例1中所得的LiNi0.80Co0.15Al0.05O2的SEM图。
图6为本发明实施例2中制备的LiNi0.80Co0.15Al0.05O2的0.1c倍率充放电条件下第二次充放电图。
图7为本发明实施例2中制备的LiNi0.80Co0.15Al0.05O2的1c倍率充放电条件下50个循环的充放电图。
图8为本发明实施例3中制备的LiNi0.80Co0.15Al0.05O2的0.1c倍率充放电条件下第二次充放电图。
图9为本发明实施例3中制备的LiNi0.80Co0.15Al0.05O2的1c倍率充放电条件下50个循环的充放电图。
具体实施方式
本发明两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,由以下实施例进行进一步阐述。
实例1
(1)混合:按化学计量比0.80:0.15:0.05:1的镍源、钴源、铝源和草酸铵,分别称取硝酸镍3.257g,硝酸钴0.611g,硝酸铝0.263g,草酸铵1.990g溶于40ml去离子水中,在室温下搅拌30min,使其充分混合均匀,然后加入1ml三乙醇胺,继续搅拌30min,得到浅绿色悬浊液。
(2)水热反应:将悬浊液转移入100ml反应釜中,在干燥箱中120℃反应6h后随炉降至室温。
(3)干燥烧结:将反应釜中沉淀通过过滤取出,用去离子水反复清洗3~4遍,真空80℃下一夜烘干。将沉淀研磨变成粉末。得到的粉末在空气中300℃下3h完成烧结,得到棒状氧化镍钴铝。
(4)混合:按化学计量比1.04:1:1的锂源、粉末和柠檬酸,分别称取硝酸锂0.783g,前一步所得粉末0.800g,柠檬酸2.295g,溶于20ml去离子水中,在室温下搅拌3h,使其充分混合均匀,得到深棕色悬浊液。
(5)螯合反应:将此悬浊液于85℃的水浴搅拌器中搅拌3h,使水分蒸干,形成凝胶。
(6)干燥:将此凝胶在真空干燥箱中140℃下烘干,形成疏松多孔固体,取出研磨形成粉末。
(7)焙烧:将粉末放置在空气中750℃下烧结2h,自然冷却到室温,即得LiNi0.80Co0.15Al0.05O2。
图1是实例1条件下制备所得LiNi0.80Co0.15Al0.05O2的XRD图,呈明显的LiNi0.80Co0.15Al0.05O2相。
图2是实例1条件下制备所得LiNi0.80Co0.15Al0.05O2的0.1c倍率充放电条件下第二次充放电图,从图中可知第二次循环放电比容量达到180mAh/g。
图3是实例1条件下制备所得LiNi0.80Co0.15Al0.05O2的1c倍率充放电条件下50个循环的充放电图,从图中可以看出高倍率下仍达到100mAh/g的放电比容量。
图4是实例1条件下制备第一步反应完成时得到的棒状氧化镍钴铝的SEM图,从图中可以看出材料呈短棒状,长度在纳米尺度上。
图5是实例1条件下制备反应完成得到的LiNi0.80Co0.15Al0.05O2的SEM图,从图中可以看出材料颗粒尺寸均匀细小。
实例2
(1)混合:按化学计量比0.80:0.15:0.05:1的镍源、钴源、铝源和草酸铵,分别称取硝酸镍3.257g,硝酸钴0.611g,硝酸铝0.263g,草酸铵1.990g溶于40ml去离子水中,在室温下搅拌30min,使其充分混合均匀,然后加入1ml三乙醇胺,继续搅拌30min,得到浅绿色悬浊液。
(2)水热反应:将悬浊液转移入50ml反应釜中,在干燥箱中130℃反应8h后随炉降至室温。
(3)干燥烧结:将反应釜中沉淀通过过滤取出,用去离子水反复清洗3~4遍,真空60℃下一夜烘干。将沉淀研磨变成粉末。得到的粉末在空气中300℃下3h完成烧结,得到铝、钴离子固溶于其中的棒状(Ni0.80Co0.15Al0.05)2O3。
(4)混合:按化学计量比1.04:1:1的锂源、粉末和柠檬酸,分别称取硝酸锂0.979g,前一步所得粉末1.000g,柠檬酸2.869g,溶于15ml去离子水中,在室温下搅拌3h,使其充分混合均匀,得到深棕色悬浊液。
(5)螯合反应:将此悬浊液于80℃的水浴搅拌器中搅拌3h,使水分蒸干,形成凝胶。
(6)干燥:将此凝胶在真空干燥箱中110℃下烘干,形成疏松多孔固体,取出研磨形成粉末。
(7)焙烧:将粉末放置在空气中750℃下烧结3h,自然冷却到室温,即得LiNi0.80Co0.15Al0.05O2。
图6是实例2条件下制备所得LiNi0.80Co0.15Al0.05O2的0.1c倍率充放电条件下第二次充放电图。
图7是实例2条件下制备所得LiNi0.80Co0.15Al0.05O2的1c倍率充放电条件下50个循环的充放电图。
实例3
(1)混合:按化学计量比0.80:0.15:0.05:1的镍源、钴源、铝源和草酸铵,分别称取硝酸镍3.257g,硝酸钴0.611g,硝酸铝0.263g,草酸铵1.990g溶于40ml去离子水中,在室温下搅拌30min,使其充分混合均匀,然后加入1ml三乙醇胺,继续搅拌30min,得到浅绿色悬浊液。
(2)水热反应:将悬浊液转移入50ml反应釜中,在干燥箱中110℃反应10h后随炉降至室温。
(3)干燥烧结:将反应釜中沉淀通过过滤取出,用去离子水反复清洗3~4遍,真空70℃下一夜烘干。将沉淀研磨变成粉末。得到的粉末在空气中300℃下4h完成烧结,得到铝、钴离子固溶于其中的棒状(Ni0.80Co0.15Al0.05)2O3。
(4)混合:按化学计量比1.04:1:1的锂源、粉末和柠檬酸,分别称取硝酸锂1.468g,前一步所得粉末1.5g,柠檬酸4.303g,溶于25ml去离子水中,在室温下搅拌3h,使其充分混合均匀,得到深棕色悬浊液。
(5)螯合反应:将此悬浊液于90℃的水浴搅拌器中搅拌3h,使水分蒸干,形成凝胶。
(6)干燥:将此凝胶在真空干燥箱中150℃下烘干,形成疏松多孔固体,取出研磨形成粉末。
(7)焙烧:将粉末放置在空气中750℃下烧结4h,自然冷却到室温,即得LiNi0.80Co0.15Al0.05O2。
图8是实例3条件下制备而成的LiNi0.80Co0.15Al0.05O2的0.1c倍率充放电条件下第二次充放电图。
图9是实例3条件下制备所得LiNi0.80Co0.15Al0.05O2的1c倍率充放电条件下50个循环的充放电图。
Claims (9)
1.一种两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,其特征在于,包括以下步骤:
(1)将镍源、钴源、铝源、水解剂和表面活性剂溶于水中,在室温下搅拌得到混合溶液,将其转移入反应釜中,于110-130℃水热反应6~10h;
(2)将反应釜中沉淀取出,干燥后研磨成粉末;
(3)将所得粉末在空气中300℃烧结3~4h,自然冷却到室温,得到棒状氧化镍钴铝;
(4)将步骤(3)所得氧化镍钴铝、锂源和柠檬酸溶于水中,在室温下搅拌得到悬浊液,将此悬浊液于80~90℃水浴搅拌得到凝胶;
(5)凝胶干燥后研磨成粉末;
(6)将粉末放置在空气中750℃下烧结2~4h,自然冷却到室温,即得LiNi0.80Co0.15Al0.05O2。
2.如权利要求1所述的两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,其特征在于,步骤(1)中,镍源、钴源、铝源、水解剂的摩尔比为0.80:0.15:0.05:1;镍源为硝酸镍;钴源为硝酸钴;铝源为硝酸铝;水解剂为草酸铵;表面活性剂为三乙醇胺。
3.如权利要求1所述的两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,其特征在于,步骤(1)中,混合溶液中水解剂浓度为0.35M;表面活性剂与水的体积比例为1:40。
4.如权利要求1所述的两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,其特征在于,步骤(1)中,室温下搅拌1h;反应釜内溶液体积占40%;于120℃下水热反应6h。
5.如权利要求1所述的两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,其特征在于,步骤(2)中,干燥采用60~80℃下真空烘干。
6.如权利要求1所述的两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,其特征在于,步骤(3)中,升温速率为5~10℃/min。
7.如权利要求1所述的两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,其特征在于,步骤(4)中,锂源、氧化镍钴铝、柠檬酸的摩尔比为1.04:1:1,锂源为硝酸锂。
8.如权利要求1所述的两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,其特征在于,步骤(5)中,干燥温度为110℃~150℃。
9.如权利要求1所述的两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法,其特征在于,步骤(6)中,升温速率为5~10℃/min。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510194106.4A CN106159220B (zh) | 2015-04-22 | 2015-04-22 | 两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510194106.4A CN106159220B (zh) | 2015-04-22 | 2015-04-22 | 两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106159220A true CN106159220A (zh) | 2016-11-23 |
CN106159220B CN106159220B (zh) | 2018-10-02 |
Family
ID=57346401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510194106.4A Expired - Fee Related CN106159220B (zh) | 2015-04-22 | 2015-04-22 | 两步法制备锂离子电池正极材料LiNi0.80Co0.15Al0.05O2的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106159220B (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170125809A1 (en) * | 2015-10-30 | 2017-05-04 | Samsung Sdi Co., Ltd. | Composite positive active material, method of preparing the same, and lithium secondary battery including positive electrode including the same |
CN112563508A (zh) * | 2020-12-10 | 2021-03-26 | 杭州肄康新材料有限公司 | 一种锂离子电池正极材料、锂离子电池正极及锂离子电池 |
CN114665092A (zh) * | 2020-12-22 | 2022-06-24 | 深圳市研一新材料有限责任公司 | 一种正极浆料组合物、正极浆料、正极极片及其二次电池 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103700844A (zh) * | 2013-12-18 | 2014-04-02 | 江苏科捷锂电池有限公司 | 锂离子电池镍钴铝复合三元正极材料的制备方法 |
CN104466154A (zh) * | 2014-12-10 | 2015-03-25 | 哈尔滨工业大学(威海) | 一种锂离子电池正极材料镍钴铝的制备方法 |
-
2015
- 2015-04-22 CN CN201510194106.4A patent/CN106159220B/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103700844A (zh) * | 2013-12-18 | 2014-04-02 | 江苏科捷锂电池有限公司 | 锂离子电池镍钴铝复合三元正极材料的制备方法 |
CN104466154A (zh) * | 2014-12-10 | 2015-03-25 | 哈尔滨工业大学(威海) | 一种锂离子电池正极材料镍钴铝的制备方法 |
Non-Patent Citations (1)
Title |
---|
HUI CAO ET AL: ""Structural and electrochemical characteristics of Co and Al co-doped lithium nickelate cathode materials for lithium-ion batteries"", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170125809A1 (en) * | 2015-10-30 | 2017-05-04 | Samsung Sdi Co., Ltd. | Composite positive active material, method of preparing the same, and lithium secondary battery including positive electrode including the same |
US11133501B2 (en) * | 2015-10-30 | 2021-09-28 | Samsung Sdi Co., Ltd. | Composite positive active material, method of preparing the same, and lithium secondary battery including positive electrode including the same |
CN112563508A (zh) * | 2020-12-10 | 2021-03-26 | 杭州肄康新材料有限公司 | 一种锂离子电池正极材料、锂离子电池正极及锂离子电池 |
CN114665092A (zh) * | 2020-12-22 | 2022-06-24 | 深圳市研一新材料有限责任公司 | 一种正极浆料组合物、正极浆料、正极极片及其二次电池 |
CN114665092B (zh) * | 2020-12-22 | 2023-06-02 | 深圳市研一新材料有限责任公司 | 一种正极浆料组合物、正极浆料、正极极片及其二次电池 |
Also Published As
Publication number | Publication date |
---|---|
CN106159220B (zh) | 2018-10-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108091843B (zh) | 一种核壳结构的富锂锰基复合正极材料及其制备方法 | |
CN107681128B (zh) | 一种锂离子电池正极材料及其制备方法 | |
CN107403913B (zh) | 一种表面修饰的镍钴铝酸锂正极材料及其制备方法 | |
CN102832389B (zh) | 表面改性的锂离子电池高镍正极活性材料及其制备方法 | |
CN102694167B (zh) | 改性锰酸锂正极材料及其制备方法 | |
CN106159254B (zh) | 纳米片状三元或富锂锰基固溶体正极材料前驱体制备方法 | |
CN103296263B (zh) | 一种锂离子电池正极材料球形镍钴铝酸锂的制备方法 | |
CN107403903B (zh) | 一种溶胶凝胶自蔓延燃烧法制备三元高镍正极材料的方法 | |
CN115000399B (zh) | 一种类球状钠离子电池正极材料及其制备方法和钠离子电池 | |
CN108054371B (zh) | 一种高振实密度、高倍率与长寿命富锂锰基正极材料及其制备方法 | |
CN102983326B (zh) | 一种球形锂镍钴复合氧化物正极材料的制备方法 | |
CN106711434B (zh) | 一种类海胆状含钠富锂层状正极材料及其制备方法 | |
CN104752714A (zh) | 一种高容量镍钴基锂离子正极材料及其制备方法 | |
CN103972499B (zh) | 一种改性的镍钴铝酸锂正极材料及其制备方法 | |
CN102683645A (zh) | 一种锂离子电池正极材料层状富锂锰基氧化物的制备方法 | |
CN103794777B (zh) | 一种表面包覆的镍锰酸锂正极材料的制备方法 | |
WO2015039490A1 (zh) | 富锂正极材料及其制备方法 | |
CN104733724A (zh) | 高镍型锂离子二次电池正极材料及其制备方法 | |
CN103715424A (zh) | 一种核壳结构正极材料及其制备方法 | |
CN102709543A (zh) | 一种富锂三元层状锂离子电池正极材料 | |
CN103606675B (zh) | 一种金属离子掺杂的锂镍钴氧正极材料的制备方法 | |
CN105514373A (zh) | 一种高容量锂离子电池正极材料及其制备方法 | |
CN107275634B (zh) | 一种无络合剂合成高振实密度、高容量球形富锂锰基正极材料的方法 | |
CN104701527A (zh) | 一种锂离子电池正极材料镍钴铝酸锂的制备方法 | |
CN103715422B (zh) | 电解法制备锂离子电池的高镍系正极材料的方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181002 Termination date: 20210422 |