CN113054170A - 镍-镍钼氧化物-石墨烯复合材料的制备方法及其应用于锂离子电池 - Google Patents
镍-镍钼氧化物-石墨烯复合材料的制备方法及其应用于锂离子电池 Download PDFInfo
- Publication number
- CN113054170A CN113054170A CN202110158949.4A CN202110158949A CN113054170A CN 113054170 A CN113054170 A CN 113054170A CN 202110158949 A CN202110158949 A CN 202110158949A CN 113054170 A CN113054170 A CN 113054170A
- Authority
- CN
- China
- Prior art keywords
- nickel
- graphene
- composite material
- solution
- molybdenum oxide
- 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
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 80
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims description 27
- 229910001416 lithium ion Inorganic materials 0.000 title claims description 27
- SCZDONROGLPIGC-UHFFFAOYSA-N molybdenum nickel Chemical compound [Ni].[Ni].[Mo] SCZDONROGLPIGC-UHFFFAOYSA-N 0.000 title description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 87
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000008367 deionised water Substances 0.000 claims abstract description 32
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 32
- 239000002243 precursor Substances 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 24
- -1 nickel-nickel molybdenum oxide Chemical compound 0.000 claims abstract description 20
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 17
- 239000006185 dispersion Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 230000001590 oxidative effect Effects 0.000 claims abstract description 14
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 9
- 239000011591 potassium Substances 0.000 claims abstract description 9
- 239000011261 inert gas Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 239000002105 nanoparticle Substances 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 229910052573 porcelain Inorganic materials 0.000 claims description 13
- QXYJCZRRLLQGCR-UHFFFAOYSA-N molybdenum(IV) oxide Inorganic materials O=[Mo]=O QXYJCZRRLLQGCR-UHFFFAOYSA-N 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 5
- LAIZPRYFQUWUBN-UHFFFAOYSA-L nickel chloride hexahydrate Chemical group O.O.O.O.O.O.[Cl-].[Cl-].[Ni+2] LAIZPRYFQUWUBN-UHFFFAOYSA-L 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 229940078487 nickel acetate tetrahydrate Drugs 0.000 claims description 2
- OINIXPNQKAZCRL-UHFFFAOYSA-L nickel(2+);diacetate;tetrahydrate Chemical compound O.O.O.O.[Ni+2].CC([O-])=O.CC([O-])=O OINIXPNQKAZCRL-UHFFFAOYSA-L 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- 238000000197 pyrolysis Methods 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 13
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052744 lithium Inorganic materials 0.000 abstract description 4
- 239000011733 molybdenum Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000012621 metal-organic framework Substances 0.000 abstract description 3
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 18
- 239000000243 solution Substances 0.000 description 15
- 229910002804 graphite Inorganic materials 0.000 description 12
- 239000010439 graphite Substances 0.000 description 12
- 239000002114 nanocomposite Substances 0.000 description 12
- 239000000047 product Substances 0.000 description 12
- 239000010406 cathode material Substances 0.000 description 11
- 238000001291 vacuum drying Methods 0.000 description 10
- 239000011259 mixed solution Substances 0.000 description 9
- 230000000630 rising effect Effects 0.000 description 9
- 239000007773 negative electrode material Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 229910000314 transition metal oxide Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- NLPVCCRZRNXTLT-UHFFFAOYSA-N dioxido(dioxo)molybdenum;nickel(2+) Chemical compound [Ni+2].[O-][Mo]([O-])(=O)=O NLPVCCRZRNXTLT-UHFFFAOYSA-N 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 238000004627 transmission electron microscopy Methods 0.000 description 1
Images
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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/184—Preparation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G39/00—Compounds of molybdenum
- C01G39/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/04—Oxides; Hydroxides
-
- 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
- H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
-
- 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
- H01M4/523—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron for non-aqueous cells
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/626—Metals
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
-
- 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
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- 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)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
本发明属于复合材料技术领域,涉及镍‑镍钼氧化物/石墨烯复合材料的制备方法,包括:将镍源溶解在氧化石墨烯分散液中搅拌均匀得到溶液a;配制八氰合钼(Ⅳ)酸钾的去离子水溶液,称为溶液b;将溶液b加入到溶液a中,保持八氰合钼(Ⅳ)酸钾与镍源的摩尔比为1:2,得到Ni2[Mo(CN)8]/GO前驱体,然后在惰性气氛中升温至700~800℃,热解10~30 min,降温至200~300℃撤去惰性气体通入空气,氧化20~30 min,即得。本发明将含镍、钼的金属有机骨架原位负载在片状的氧化石墨烯上,在惰性气氛中热分解前驱体并热还原氧化石墨烯,空气中将镍、钼氧化,所制得材料显示出优异的储锂性能,具有潜在应用前景。本发明简单可行、复合效果好、适于大规模生产。
Description
技术领域
本发明属于复合材料技术领域,涉及一种镍-镍钼氧化物-石墨烯(Ni-NiO-MoO2/GE)复合材料的制备方法及其应用于锂离子电池。
背景技术
随着经济社会的快速发展,石油、煤炭等化石燃料的储量越来越少,人们对于能源的需求日益增加。作为一种能量储存装置,锂离子电池由于具有能量密度高、循环寿命长、自放电电流小、无记忆效应等优点,广泛地应用于各类电子设备和新能源汽车的动力电池。传统的锂离子电池用钴酸锂作正极材料,石墨作为负极材料。随着人们对锂离子电池性能的要求越来越高,传统的石墨负极由于较低的比容量已不能满足实际需求。因此,迫切需要开发具有高比容量、高倍率性能的锂离子电池负极材料。
过渡金属氧化物是一类具有应用潜力的负极材料,其中,NiO和MoO2由于具有较高的比容量、绿色环保、来源广泛等优点,受到了越来越多的关注,与此同时它们也存在着充放电过程中体积膨胀大、导电性不好等问题,阻碍了实用化。作为碳家族的新兴成员,石墨烯(GE)由于具有高的比表面积、极好的导电性和热稳定性等优势,引发了新一轮关于碳材料的研究热潮。将过渡金属氧化物与石墨烯复合,制备过渡金属氧化物/石墨烯复合电极材料,是设计开发高性能锂离子电池负极材料的有效途径。
发明内容
针对上述现有技术中存在的不足,本发明目的在于提供一种镍-镍钼氧化物-石墨烯(Ni-NiO-MoO2/GE)复合材料的制备方法。
一种镍-镍钼氧化物/石墨烯复合材料的制备方法,包括如下步骤:
(1)将氧化石墨烯超声分散于去离子水中,得到氧化石墨烯(GO)分散液,然后将镍源溶解在氧化石墨烯分散液中搅拌均匀得到溶液a,其中所述氧化石墨烯:镍源:去离子水的质量体积比为30~120mg: 60~240mg: 15~60mL,优选60mg:120mg:30mL,所述镍源为六水合氯化镍或四水合醋酸镍,优选六水合氯化镍;
(2)配制八氰合钼(Ⅳ)酸钾的去离子水溶液,称为溶液b,其中所述八氰合钼(Ⅳ)酸钾:去离子水的质量体积比为62~248mg: 15~60mL,优选124mg:30mL;
(3)将溶液b加入到溶液a中,使八氰合钼(Ⅳ)酸钾与镍源的摩尔比为1: 2,搅拌2h,静置,将所得沉淀离心分离,用去离子水及乙醇洗涤后真空干燥,得到Ni2[Mo(CN)8]/GO前驱体;
(4)将Ni2[Mo(CN)8]/GO前驱体装入瓷舟,置于管式炉中,在惰性气氛中程序升温至700~800 ℃,热解10~30 min,分解Ni2[Mo(CN)8]并将氧化石墨烯还原为石墨烯 (GE);然后降温至200~300 ℃撤去惰性气体通入空气,氧化20~30 min,得到镍-镍钼氧化物/石墨烯复合(Ni-NiO-MoO2/GE)材料。
本发明步骤(1)所述氧化石墨烯,为现有技术,以天然鳞片石墨为原料,用Hummers法氧化而得。
本发明步骤(4)中所述惰性气体为氩气。
本发明所得产物中Ni-NiO-MoO2纳米颗粒紧密的附着于石墨烯片的表面,Ni-NiO-MoO2纳米颗粒的尺寸为100 nm左右。
本发明还有一个目的,在于将所制得的复合材料,应用于锂离子电池负极。
实验室应用实验如下:
将所制备的锂离子电池负极材料、粘结剂、导电剂以8:1:1的质量比混合在一起,经研磨充分后分散在去离子水中,搅拌10 h,然后将所得浆料以一定厚度均匀地涂覆在集流体铜箔表面,在60℃下真空干燥,去除水分。随后将铜箔切割成电极片备用。电池组装在充满氩气的手套箱中进行,使用锂片作对电极,电解液是1.0 M LiPF6溶解在体积比为1:1的碳酸亚乙酯(EC)和碳酸二甲酯(DMC)混合溶剂中。
本发明将纳米尺度的Ni-NiO-MoO2与石墨烯结合制备Ni-NiO-MoO2/GE复合材料,具有如下优势:(1)NiO-MoO2混合氧化物具有比单一金属氧化物更优异的电化学性能;(2)复合材料中的镍金属和石墨烯可以提高复合材料的导电性;(3)石墨烯可以有效地缓冲电极材料在充放电过程中的体积膨胀问题,并且可以避免纳米颗粒的团聚。这些优势使得复合材料表现出优越的电化学性能,用作锂离子电池负极材料时表现出较高的比容量(100 mAg-1时首次放电比容量达1233 mAh g-1)和良好的循环稳定性(在500 mA g-1的电流密度下循环220次后容量达910 mA h g-1)。
有益效果
本发明采用金属有机骨架前驱体方法,将含镍、钼的金属有机骨架(Ni2[Mo(CN)8])原位负载在片状的氧化石墨烯上,然后在惰性气氛中热分解前驱体并热还原氧化石墨烯,最后在空气中将镍、钼氧化,制备出石墨烯上负载Ni-NiO-MoO2纳米粒子的复合负极材料,该材料显示出了优异的储锂性能,具有潜在的应用前景。此方法简单可行、复合效果好、适于大规模生产。
附图说明
图1. Ni-NiO-MoO2/GE纳米复合材料的X-射线衍射(XRD)图谱,其中横坐标为衍射角(2θ),单位为度;纵坐标为衍射强度,单位为cps。
图2. Ni-NiO-MoO2/GE纳米复合材料的透射电镜(TEM)照片。
图3. Ni-NiO-MoO2/GE纳米复合材料用作锂离子电池负极材料在电流密度为500mA g-1下的循环性能图及相对应的库伦效率。
具体实施方式
下面结合附图和具体实施例对本发明的技术方案做详细的说明,但本发明的保护范围不限于这些实施例。
实施例1
将60 mg氧化石墨超声分散于30 ml去离子水中,超声3 h得到氧化石墨烯分散液。加入120 mg NiCl2· 6H2O,常温搅拌3 h后加入30 ml K4[Mo(CN)8]溶液(含K4[Mo(CN)8]124 mg),将所得混合溶液在常温下搅拌2 h,静置10 h,将产物离心分离,用去离子水/无水乙醇洗涤,于60℃下真空干燥24 h,得到石墨烯上负载的类球形Ni2[Mo(CN)8]纳米粒子前驱体。将盛有前驱体的瓷舟放置于管式炉中,通入Ar气,以5 ℃/min的升温速率程序升温至800℃,并在此温度保持20 min。当温度降至300℃时,撤去Ar气保护,将气氛换为空气,在此温度下进行氧化20 min,得到镍-镍钼氧化物/石墨烯纳米复合材料(Ni-NiO-MoO2/GE)。
所制得复合材料作为锂离子电池负极材料在100 mA g-1时首次放电比容量为1233mAh g-1。
图1为本实施例制备的产物的XRD图,图中所有衍射峰对应于Ni,NiO和MoO2,说明Ni2[Mo(CN)8]被成功转化为Ni-NiO-MoO2。
图2为本实施例制备的产物的TEM图,可以看出镍-镍钼氧化物纳米颗粒均匀的附着于片状石墨烯的表面,其中纳米颗粒的尺寸约为100 nm左右。
图3为本实施例制备的镍-镍钼氧化物/石墨烯纳米复合材料作为锂离子电池负极材料在电流密度为500 mA g-1时的循环性能图。
实施例2
将60 mg氧化石墨超声分散于30 ml去离子水中,超声3 h得到氧化石墨烯分散液。加入120 mg NiCl2· 6H2O,常温搅拌3 h后加入30 ml K4[Mo(CN)8]溶液(含K4[Mo(CN)8]124 mg),将所得混合溶液在常温下搅拌2 h,静置10 h,将产物离心分离,用去离子水/无水乙醇洗涤,于60℃下真空干燥24 h,得到石墨烯上负载的类球形Ni2[Mo(CN)8]纳米粒子前驱体。将盛有前驱体的瓷舟放置于管式炉中,通入Ar气,以5 ℃/min的升温速率程序升温至700℃,并在此温度保持20 min。当温度降至300℃时,撤去Ar气保护,将气氛换为空气,在此温度下进行氧化20 min,得到镍-镍钼氧化物/石墨烯纳米复合材料(Ni-NiO-MoO2/GE)。
所制得复合材料作为锂离子电池负极材料在100 mA g-1的电流密度下首次放电比容量为1218 mA h g-1。
实施例3
将60 mg氧化石墨超声分散于30 ml去离子水中,超声3 h得到氧化石墨烯分散液。加入120 mg NiCl2· 6H2O,常温搅拌3 h后加入30 ml K4[Mo(CN)8]溶液(含K4[Mo(CN)8]124 mg),将所得混合溶液在常温下搅拌2 h,静置10 h,将产物离心分离,用去离子水/无水乙醇洗涤,于60℃下真空干燥24 h,得到石墨烯上负载的类球形Ni2[Mo(CN)8]纳米粒子前驱体。将盛有前驱体的瓷舟放置于管式炉中,通入Ar气,以5 ℃/min的升温速率程序升温至800℃,并在此温度保持10 min。当温度降至300℃时,撤去Ar气保护,将气氛换为空气,在此温度下进行氧化20 min,得到镍-镍钼氧化物/石墨烯纳米复合材料(Ni-NiO-MoO2/GE)。
所制得复合材料作为锂离子电池负极材料在100 mA g-1的电流密度下首次放电比容量为1190 mA h g-1。
实施例4
将60 mg氧化石墨超声分散于30 ml去离子水中,超声3 h得到氧化石墨烯分散液。加入120 mg NiCl2· 6H2O,常温搅拌3 h后加入30 ml K4[Mo(CN)8]溶液(含K4[Mo(CN)8]124 mg),将所得混合溶液在常温下搅拌2 h,静置10 h,将产物离心分离,用去离子水/无水乙醇洗涤,于60℃下真空干燥24 h,得到石墨烯上负载的类球形Ni2[Mo(CN)8]纳米粒子前驱体。将盛有前驱体的瓷舟放置于管式炉中,通入Ar气,以5 ℃/min的升温速率程序升温至800℃,并在此温度保持30 min。当温度降至300℃时,撤去Ar气保护,将气氛换为空气,在此温度下进行氧化20 min,得到镍-镍钼氧化物/石墨烯纳米复合材料(Ni-NiO-MoO2/GE)。
所制得复合材料作为锂离子电池负极材料在100 mA g-1的电流密度下首次放电比容量为1193 mA h g-1。
实施例5
将60 mg氧化石墨超声分散于30 ml去离子水中,超声3 h得到氧化石墨烯分散液。加入120 mg NiCl2· 6H2O,常温搅拌3 h后加入30 ml K4[Mo(CN)8]溶液(含K4[Mo(CN)8]124 mg),将所得混合溶液在常温下搅拌2 h,静置10 h,将产物离心分离,用去离子水/无水乙醇洗涤,于60℃下真空干燥24 h,得到石墨烯上负载的类球形Ni2[Mo(CN)8]纳米粒子前驱体。将盛有前驱体的瓷舟放置于管式炉中,通入Ar气,以5 ℃/min的升温速率程序升温至800℃,并在此温度保持20 min。当温度降至200℃时,撤去Ar气保护,将气氛换为空气,在此温度下进行氧化30 min,得到镍-镍钼氧化物/石墨烯纳米复合材料(Ni-NiO-MoO2/GE)。
所制得复合材料作为锂离子电池负极材料在100 mA g-1的电流密度下首次放电比容量为1213 mA h g-1。
实施例6
将60 mg氧化石墨超声分散于30 ml去离子水中,超声3 h得到氧化石墨烯分散液。加入120 mg NiCl2· 6H2O,常温搅拌3 h后加入30 ml K4[Mo(CN)8]溶液(含K4[Mo(CN)8]124 mg),将所得混合溶液在常温下搅拌2 h,静置10 h,将产物离心分离,用去离子水/无水乙醇洗涤,于60℃下真空干燥24 h,得到石墨烯上负载的类球形Ni2[Mo(CN)8]纳米粒子前驱体。将盛有前驱体的瓷舟放置于管式炉中,通入Ar气,以5 ℃/min的升温速率程序升温至700℃,并在此温度保持30 min。当温度降至300℃时,撤去Ar气保护,将气氛换为空气,在此温度下进行氧化30 min,得到镍-镍钼氧化物/石墨烯纳米复合材料(Ni-NiO-MoO2/GE)。
所制得复合材料作为锂离子电池负极材料在100 mA g-1的电流密度下首次放电比容量为1197 mA h g-1。
实施例7
将60 mg氧化石墨超声分散于30 ml去离子水中,超声3 h得到氧化石墨烯分散液。加入120 mg NiCl2· 6H2O,常温搅拌3 h后加入30 ml K4[Mo(CN)8]溶液(含K4[Mo(CN)8]124 mg),将所得混合溶液在常温下搅拌2 h,静置10 h,将产物离心分离,用去离子水/无水乙醇洗涤,于60℃下真空干燥24 h,得到石墨烯上负载的类球形Ni2[Mo(CN)8]纳米粒子前驱体。将盛有前驱体的瓷舟放置于管式炉中,通入Ar气,以5 ℃/min的升温速率程序升温至700℃,并在此温度保持30 min。当温度降至200℃时,撤去Ar气保护,将气氛换为空气,在此温度下进行氧化30 min,得到镍-镍钼氧化物/石墨烯纳米复合材料(Ni-NiO-MoO2/GE)。
所制得复合材料作为锂离子电池负极材料在100 mA g-1的电流密度下首次放电比容量为1220 mA h g-1。
实施例8
将30 mg氧化石墨超声分散于30 ml去离子水中,超声3 h得到氧化石墨烯分散液。加入120 mg NiCl2· 6H2O,常温搅拌3 h后加入30 ml K4[Mo(CN)8]溶液(含K4[Mo(CN)8]124 mg),将所得混合溶液在常温下搅拌2 h,静置10 h,将产物离心分离,用去离子水/无水乙醇洗涤,于60℃下真空干燥24 h,得到石墨烯上负载的类球形Ni2[Mo(CN)8]纳米粒子前驱体。将盛有前驱体的瓷舟放置于管式炉中,通入Ar气,以5 ℃/min的升温速率程序升温至800℃,并在此温度保持20 min。当温度降至300℃时,撤去Ar气保护,将气氛换为空气,在此温度下进行氧化20 min,得到镍-镍钼氧化物/石墨烯纳米复合材料(Ni-NiO-MoO2/GE)。
所制得复合材料作为锂离子电池负极材料在100 mA g-1的电流密度下首次放电比容量为1123 mA h g-1。
实施例9
将120 mg氧化石墨超声分散于60 ml去离子水中,超声3 h得到氧化石墨烯分散液。加入120 mg NiCl2· 6H2O,常温搅拌3 h后加入30 ml K4[Mo(CN)8]溶液(含K4[Mo(CN)8]120 mg),将所得混合溶液在常温下搅拌2 h,静置10 h,将产物离心分离,用去离子水/无水乙醇洗涤,于60℃下真空干燥24 h,得到石墨烯上负载的类球形Ni2[Mo(CN)8]纳米粒子前驱体。将盛有前驱体的瓷舟放置于管式炉中,通入Ar气,以5 ℃/min的升温速率程序升温至800℃,并在此温度保持20 min。当温度降至300℃时,撤去Ar气保护,将气氛换为空气,在此温度下进行氧化20 min,得到镍-镍钼氧化物/石墨烯纳米复合材料(Ni-NiO-MoO2/GE)。
所制得复合材料作为锂离子电池负极材料在100 mA g-1的电流密度下首次放电比容量为1001 mA h g-1。
以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。
Claims (7)
1.一种镍-镍钼氧化物/石墨烯复合材料的制备方法,其特征在于,包括如下步骤:
(1)将氧化石墨烯超声分散于去离子水中,得到氧化石墨烯分散液,然后将镍源溶解在氧化石墨烯分散液中搅拌均匀得到溶液a,其中所述氧化石墨烯:镍源:去离子水的质量体积比为30~120mg: 60~240mg: 15~60mL,所述镍源为六水合氯化镍或四水合醋酸镍;
(2)配制八氰合钼(Ⅳ)酸钾的去离子水溶液,称为溶液b,其中所述八氰合钼(Ⅳ)酸钾:去离子水的质量体积比为62~248 mg: 15~60 mL;
(3)将溶液b加入到溶液a中,保持八氰合钼(Ⅳ)酸钾与镍源的摩尔比为1: 2,搅拌均匀,静置,将所得沉淀离心分离,用去离子水及乙醇洗涤后真空干燥,得到Ni2[Mo(CN)8]/GO前驱体;
(4)将Ni2[Mo(CN)8]/GO前驱体装入瓷舟,置于管式炉中,在惰性气氛中程序升温至700~800℃,热解10~30 min,分解Ni2[Mo(CN)8]并将氧化石墨烯还原为石墨烯;然后降温至200~300℃撤去惰性气体通入空气,氧化20~30min,即得。
2.根据权利要求1所述镍-镍钼氧化物/石墨烯复合材料的制备方法,其特征在于:步骤(1)中所述氧化石墨烯:镍源:去离子水的质量体积比为60mg:120mg:30mL。
3.根据权利要求1所述镍-镍钼氧化物/石墨烯复合材料的制备方法,其特征在于:步骤(1)中所述镍源为六水合氯化镍。
4.根据权利要求1所述镍-镍钼氧化物/石墨烯复合材料的制备方法,其特征在于:步骤(2)中所述八氰合钼(Ⅳ)酸钾:去离子水的质量体积比为124mg:30mL。
5.根据权利要求1所述镍-镍钼氧化物/石墨烯复合材料的制备方法,其特征在于:步骤(4)中所述惰性气体为氩气。
6.根据权利要求1-5任一所述方法制备得到的镍-镍钼氧化物/石墨烯复合材料,其特征在于:Ni-NiO-MoO2纳米颗粒紧密的附着于石墨烯的表面,Ni-NiO-MoO2纳米颗粒的尺寸为100 nm左右。
7.一种如权利要求6所述镍-镍钼氧化物/石墨烯复合材料的应用,其特征在于:将其应用于锂离子电池负极。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110158949.4A CN113054170B (zh) | 2021-02-05 | 2021-02-05 | 镍-镍钼氧化物-石墨烯复合材料的制备方法及其应用于锂离子电池 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110158949.4A CN113054170B (zh) | 2021-02-05 | 2021-02-05 | 镍-镍钼氧化物-石墨烯复合材料的制备方法及其应用于锂离子电池 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN113054170A true CN113054170A (zh) | 2021-06-29 |
CN113054170B CN113054170B (zh) | 2022-05-20 |
Family
ID=76508920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110158949.4A Active CN113054170B (zh) | 2021-02-05 | 2021-02-05 | 镍-镍钼氧化物-石墨烯复合材料的制备方法及其应用于锂离子电池 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113054170B (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114203983A (zh) * | 2021-11-04 | 2022-03-18 | 江苏大学 | 一种多孔钼酸锌/氧化锌/石墨烯复合材料的制备方法及其应用于锂离子电池负极 |
CN117878297A (zh) * | 2024-03-12 | 2024-04-12 | 山东海化集团有限公司 | 一种钠离子电池负极材料及其制备方法和应用 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006344567A (ja) * | 2005-06-10 | 2006-12-21 | Sumitomo Metal Mining Co Ltd | 非水系電解質二次電池用正極活物質とその製造方法、および該正極活物質を用いた非水系電解質二次電池 |
US20110292570A1 (en) * | 2010-05-14 | 2011-12-01 | Max-Planck-Gesellschaft zur Foerd. der Wisse. e. V. | Process for encapsulating metals and metal oxides with graphene and the use of these materials |
CN105161314A (zh) * | 2015-08-26 | 2015-12-16 | 西南石油大学 | 纳米氧化镍/镍/石墨烯复合材料及其制备方法和应用 |
CN107045950A (zh) * | 2017-03-27 | 2017-08-15 | 苏州烯电新材料科技有限公司 | 一种泡沫镍/石墨烯/二氧化钼三层结构电极材料的制备方法 |
CN111106324A (zh) * | 2018-10-27 | 2020-05-05 | 中国石油化工股份有限公司 | 一种掺氮二硫化钼/石墨烯复合材料 |
-
2021
- 2021-02-05 CN CN202110158949.4A patent/CN113054170B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006344567A (ja) * | 2005-06-10 | 2006-12-21 | Sumitomo Metal Mining Co Ltd | 非水系電解質二次電池用正極活物質とその製造方法、および該正極活物質を用いた非水系電解質二次電池 |
US20110292570A1 (en) * | 2010-05-14 | 2011-12-01 | Max-Planck-Gesellschaft zur Foerd. der Wisse. e. V. | Process for encapsulating metals and metal oxides with graphene and the use of these materials |
CN105161314A (zh) * | 2015-08-26 | 2015-12-16 | 西南石油大学 | 纳米氧化镍/镍/石墨烯复合材料及其制备方法和应用 |
CN107045950A (zh) * | 2017-03-27 | 2017-08-15 | 苏州烯电新材料科技有限公司 | 一种泡沫镍/石墨烯/二氧化钼三层结构电极材料的制备方法 |
CN111106324A (zh) * | 2018-10-27 | 2020-05-05 | 中国石油化工股份有限公司 | 一种掺氮二硫化钼/石墨烯复合材料 |
Non-Patent Citations (1)
Title |
---|
KEQIANG XU ET AL.: ""Facile synthesis of novel tungsten-based hierarchical core-shell composite for ultrahigh volumetric lithium storage"", 《JOURNAL OF COLLOID AND INTERFACE SCIENCE》 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114203983A (zh) * | 2021-11-04 | 2022-03-18 | 江苏大学 | 一种多孔钼酸锌/氧化锌/石墨烯复合材料的制备方法及其应用于锂离子电池负极 |
CN114203983B (zh) * | 2021-11-04 | 2022-11-18 | 江苏大学 | 一种多孔钼酸锌/氧化锌/石墨烯复合材料的制备方法及其应用于锂离子电池负极 |
CN117878297A (zh) * | 2024-03-12 | 2024-04-12 | 山东海化集团有限公司 | 一种钠离子电池负极材料及其制备方法和应用 |
Also Published As
Publication number | Publication date |
---|---|
CN113054170B (zh) | 2022-05-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Li et al. | Review on comprehending and enhancing the initial Coulombic efficiency of anode materials in lithium-ion/sodium-ion batteries | |
CN110299516B (zh) | 碳纳米管阵列负载钛酸锂柔性电极材料的制备方法 | |
Zhang et al. | A facile synthesis of 3D flower-like NiCo2O4@ MnO2 composites as an anode material for Li-ion batteries | |
Ren et al. | Preparation of carbon-encapsulated ZnO tetrahedron as an anode material for ultralong cycle life performance lithium-ion batteries | |
CN108598444B (zh) | 锂离子电池复合负极材料三氧化二钒/石墨烯及制备方法 | |
Su et al. | Preparation and electrochemical Li storage performance of MnO@ C nanorods consisting of ultra small MnO nanocrystals | |
CN104966824A (zh) | 一种基于壳聚糖及其衍生物氮掺杂多孔碳球-氧化钴纳米复合负极材料及其制备方法 | |
Liu et al. | A facile synthesis of core-shell structured ZnO@ C nanosphere and their high performance for lithium ion battery anode | |
CN106571465A (zh) | 水滑石前驱体法氮硫共掺杂碳负载过渡金属硫化物固溶体及其制备方法和应用 | |
CN109473643B (zh) | 一种CoSe2/石墨烯复合材料制备方法和用途 | |
Wang et al. | In-situ grown flower-like C@ SnO2/Cu2O nanosheet clusters on Cu foam as high performance anode for lithium-ion batteries | |
CN113054170B (zh) | 镍-镍钼氧化物-石墨烯复合材料的制备方法及其应用于锂离子电池 | |
CN114039051B (zh) | 一种三维结构MXene/SnO2/C负极复合材料及其制备方法 | |
Wang et al. | Facile synthesis of a scale-like NiO/Ni composite anode with boosted electrochemical performance for lithium-ion batteries | |
CN112357956B (zh) | 碳/二氧化钛包覆氧化锡纳米颗粒/碳组装介孔球材料及其制备和应用 | |
Li et al. | Microwave-assisted synthesis of the sandwich-like porous Al2O3/RGO nanosheets anchoring NiO nanocomposite as anode materials for lithium-ion batteries | |
CN113451570A (zh) | 一种mof衍生核壳结构锂离子电池负极材料及制备方法 | |
CN107634193B (zh) | 一种多孔硫化亚铁纳米线与氮掺杂碳复合材料及其制备方法和应用 | |
EP4273966A1 (en) | Silicon-doped graphene composite material, preparation method for same, and applications thereof | |
CN113410459B (zh) | 一种内嵌MoSx纳米片的三维有序大孔类石墨烯炭材料、制备与应用 | |
Hu et al. | A new method of synthesis of Sb 2 Se 3/rGO as a high-rate and low-temperature anode for sodium–ion batteries | |
Xie et al. | Ni-Co MOF-derived rambutan-like NiCo2O4/NC composite anode materials for high-performance lithium storage | |
CN113571681A (zh) | 一种空心二氧化钛/镍/碳复合材料及其制备方法和应用 | |
Long et al. | Unique three-dimensional hierarchical heterogeneous MoS 2/graphene structures as a high-performance anode material for lithium-ion batteries | |
Li et al. | Low-temperature synthesis of pyrolytic-PVDF-coated SnO2@ hard carbon nanocomposite anodes for Li-ion batteries |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20240708 Address after: 716000 Yanchuan County, Yan'an City, Shaanxi Province, Dayu Street Office, Hedong Community, Xinyuan Community, Building 3, Facade Room 01 Patentee after: Yan'an Sansehui Technology Co.,Ltd. Country or region after: China Address before: Zhenjiang City, Jiangsu Province, 212013 Jingkou District Road No. 301 Patentee before: JIANGSU University Country or region before: China |
|
TR01 | Transfer of patent right |