CN106257715B - Lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium - Google Patents
Lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium Download PDFInfo
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- CN106257715B CN106257715B CN201610726434.9A CN201610726434A CN106257715B CN 106257715 B CN106257715 B CN 106257715B CN 201610726434 A CN201610726434 A CN 201610726434A CN 106257715 B CN106257715 B CN 106257715B
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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
- H01M4/52—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
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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
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
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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
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a kind of lithium ion battery preparation method of ytterbium doping nickel-cobalt lithium manganate material, step includes：A stoichiometric ratios weigh raw material；b）Absolute ethyl alcohol is added into raw material, drying is taken out after ball milling；c）Acetate fiber, potassium chloride sodium chloride fused salt mixt and absolute ethyl alcohol is added to being made in raw material by step b, is dried after ball milling；d）To be sintered through step c treated raw materials, sintering complete it is cooling after, clean the powder of gained and drying, ytterbium be made and adulterates nickel-cobalt lithium manganate material.Lithium ion battery in the present invention adulterates nickel-cobalt lithium manganate material with ytterbium has higher discharge capacity and gram volume；It is hollow tubular structure, after further treatment after, tube wall is more loose, alleviate volume expansion problem；The inorganic filler titanium dioxide in acetate fiber is utilized, it is made to be doped into the lattice of ytterbium doping nickel-cobalt lithium manganate material, improves the stability of ytterbium doping nickel-cobalt lithium manganate material, improves capacity of lithium ion battery attenuation problem.
Description
Technical field
The present invention relates to technical field of lithium-ion battery, and nickel cobalt is adulterated more particularly, to a kind of lithium ion battery ytterbium
The preparation method of lithium manganate material.
Background technology
Lithium ion battery is compared with the other kinds of batteries such as plumbic acid, cadmium nickel with specific capacity is big, operating voltage is high, charging
The advantages that speed is fast, operating temperature range is wide, have extended cycle life, is small, is light-weight, green non-pollution.Currently, answering extensively
For fields such as mobile phone, laptop, electric tools, and it will be used wider and wider general, novel digital electronic
The fast development of product with to lithium ion battery energy density and high reliability propose increasingly higher demands.
As other secondary cells, positive electrode also takes up high status in lithium ion battery, with cathode material
Material decides the performance of lithium ion battery together, frequently with cobalt acid lithium, LiMn2O4, lithium nickelate or nickel in conventional lithium ion battery
Positive electrode of the material containing lithium such as cobalt manganic acid lithium as lithium ion battery, recent LiFePO 4 material also increasingly become concern
Focus, but still there are some defects, such as discharge capacity again without can have in these anode material for lithium-ion batteries
Objectively improve, gram volume is also still smaller, significantly limits the growth of lithium ion battery finished product capacity, also limit lithium from
Sub- battery to miniaturization miniaturization；The development for limiting lithium ion power automobile is not increasing electric automobile dead weight
Under the premise of, course continuation mileage increasess slowly, or even is difficult to increase；The cruising ability of the mobile devices such as mobile phone is equally also limited,
Since mobile device is intended to miniaturization and lightening development, higher requirement also is put forward to the lithium ion battery that it is carried,
When needing to meet the requirement of more small body type and more capacity, existing lithium ion battery is difficult to reach similar requirement.These
An important factor for limiting lithium ion cell and related industry develop be the limitation of the electrode material of lithium ion battery, especially lithium from
The limitation of sub- cell positive material needs to develop a kind of with more high discharge capacity and gram volume to break this limitation
Anode material for lithium-ion batteries, in this way could power-assisted mobile device develop toward lightening and high continuation of the journey direction, also could power-assisted I
The pure electric vehicle of state or the development of hybrid vehicle.
Invention content
To solve the above problems, the present invention provides a kind of with more high discharge capacity and gram volume, more stable lithium
Ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium.
A kind of lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, includes the following steps：
a）By LiNi0.32Co0.32Mn0.32Yb0.04O2Stoichiometric ratio weigh lithium carbonate, nickel oxide, cobalt oxide, manganese oxide
And ytterbium oxide, it is 1 to make the molar ratio of Li, Ni, Co, Mn and Yb：0.32：0.32：0.32：0.04, lithium carbonate, nickel oxide, oxidation
The total weight of cobalt, manganese oxide and ytterbium oxide is 200 parts by weight；
b）The absolute ethyl alcohol of 200~280 parts by weight, and ball milling 2~4 hours are added in the raw material weighed to step a, later
It takes out drying and obtains ytterbium doping nickle cobalt lithium manganate raw material；
c）To made from step b ytterbium doping nickle cobalt lithium manganate raw material in be added 60~90 parts by weight acetate fiber and
The potassium chloride sodium chloride fused salt mixt of 300~500 parts by weight, adds the absolute ethyl alcohol of 600~900 parts by weight, and ball milling 6~
It 8 hours, then dries；
d）To be sintered 4~6 hours at 750~800 DEG C through step c treated raw materials, sintering complete it is cooling after, use
The powder of water cleaning gained, and dry, ytterbium is made and adulterates nickel-cobalt lithium manganate material.
Ytterbium is a kind of rare earth element, and the addition of ytterbium element can improve the electric property of material, in nickel-cobalt lithium manganate material
The micro ytterbium element of middle addition can improve the electric property of nickel-cobalt lithium manganate material, can improve putting for nickel-cobalt lithium manganate material
Capacitance and gram volume.Acetate fiber is the fiber of micro-nano, and acetate fiber intensity and elasticity are all more excellent, and micro-nano
Acetate fiber has larger specific surface area, can adsorb a large amount of material powder, can especially adsorb largely through anhydrous
Material powder after ethanol wet so that there are hollow tubular structures by sintered ytterbium doping nickel-cobalt lithium manganate material；By
Template in the present invention using acetate fiber as ytterbium doping nickel-cobalt lithium manganate material synthesis, the ytterbium of synthesis adulterate nickel cobalt mangaic acid
Lithium material is hollow tubulose, and its tube wall is loose and porous structure, this is because in calcination process, acetate fiber is heated
It decomposes and generates gas, impact caused by the ytterbium doping nickel-cobalt lithium manganate material of surrounding, this kind of hollow structure can be in charge and discharge
It prevents ytterbium doping nickel-cobalt lithium manganate material from expanding in electric process, the cycle performance of lithium ion battery can be improved.In addition,
It is existing when preparing acetate fiber, often add part titanium dioxide as inorganic filler, in the present invention, acetate fiber it is organic
Part is decomposed in high-temperature process, and the titanium dioxide as filler is then retained, this part titanium dioxide can be with titanium oxide
Form is doped in ytterbium doping nickel-cobalt lithium manganate material, although the titanium oxide content of this part is seldom, about ytterbium adulterates nickel cobalt
The 0.1% of lithium manganate material weight, but after this partial oxidation is titanium doped, further changed the crystal of nickel-cobalt lithium manganate material
Structure can improve the stability of ytterbium doping nickel-cobalt lithium manganate material, can effectively improve lithium ion battery in charge and discharge cycles mistake
Capacity fade problem in journey.
Preferably, the acetate fiber in step c, a diameter of 0.1~1 μm, 5~15 μm of length.
Preferably, the length of acetate fiber is 5~10 μm in step c.
The acetate fiber of the size can make the size of ytterbium doping nickel-cobalt lithium manganate material obtained maintain micro-nano, and
And make ytterbium doping nickel-cobalt lithium manganate material obtained that there is larger specific surface area, in lithium ion battery in use, with electrolysis
Liquid contact is even closer more fully.
Preferably, in sodium chloride and potassium chloride fused salt mixt in step c, the molar ratio 1 of potassium chloride and sodium chloride：1~
1.5。
Sodium chloride and potassium chloride molten salt system has melting temperature low, and the good feature of diffusion effect, sodium chloride rubs with potassium chloride
You are than being 1：In the range of 1~1.5, the melting temperature of system is 720 DEG C or so, and at 720 DEG C or more, entire reaction system is in
The raw material reaction rate of existing liquid, ytterbium doping nickel-cobalt lithium manganate material therein is accelerated, and the ytterbium doping nickel cobalt mangaic acid of generation is reacted
Lithium material is also more uniform.
Preferably, in step d, when sintering, first keeps the temperature 2~3 hours at 600~650 DEG C.
Since acetate fiber is a kind of organic fiber heating up decomposition at low temperature, decomposition temperature is about 600
DEG C or so, therefore sintering when, first 600 DEG C or so temperatures for a period of time, allow acetate fiber in this temperature range
It first decomposes, while raw material being allowed to carry out a pre-sintering process, make lithium titanate material just one-step forming, gather around there are one hollow tubular knot
Structure.
Preferably, the rotating speed of ball milling is 2500~3000rpm in step b, in step c the rotating speed of ball milling be 1500~
2000rpm。
It is the mixing of solid inorganic powder when ball milling in step b, high rotating speed can promote to grind and make mixing more
Uniformly；And the materials such as not wear-resisting acetate fiber are added in step c, in order to ensure that the integrality of acetate fiber, use are low
Rotating speed mixes raw material.
Preferably, temperature is 50~60 DEG C when being dried in step b, temperature is 50~60 DEG C when being dried in step c, step
Temperature when being dried in d is 100~140 DEG C.
Due to the only untreated raw mixture of step b and c drying, if the temperature of drying is excessively high to destroy original
The activity of material, and in step d, ytterbium adulterates nickel-cobalt lithium manganate material through high―temperature nuclei, and drying temperature is higher at this time, to ytterbium
The no longer presence for adulterating nickel-cobalt lithium manganate material can accelerate the efficiency of drying instead.
Preferably, in step d, the ytterbium doping nickel-cobalt lithium manganate material after the completion of being sintered is being cooled to 150~200 DEG C
When, it puts into water and cleans, dry later.
Because acetate fiber thermal decomposition generates the nickel-cobalt lithium manganate material of gas impact surrounding in sintering process, nickel cobalt can be made
Lithium manganate material becomes loose, but due to being doped with a small amount of rare earth ytterbium element in nickle cobalt lithium manganate, the doping of ytterbium element makes
Nickel-cobalt lithium manganate material is more hard made from obtaining, and thermally decomposing the impact of generation only makes small-scale nickel-cobalt lithium manganate material
Become loose, it is therefore desirable to ytterbium doping nickel-cobalt lithium manganate material it is uncolled to room temperature when put into water it made to become more
Loosely.
Therefore, the invention has the advantages that：
（1）Lithium ion battery in the present invention adulterates nickel-cobalt lithium manganate material with ytterbium has higher discharge capacity and gram appearance
Amount；
（2）It is hollow tubular structure that lithium ion battery in the present invention adulterates nickel-cobalt lithium manganate material with ytterbium, through further
After processing, tube wall is more loose, can alleviate the volume expansion problem in charge and discharge process；
（3）The inorganic filler titanium dioxide in acetate fiber is utilized in the present invention, it is made to be doped into ytterbium doping nickel cobalt mangaic acid
In the lattice of lithium material, improves the stability of ytterbium doping nickel-cobalt lithium manganate material, can effectively improve lithium ion battery in charge and discharge
Capacity fade problem in cyclic process.
Specific implementation mode
Technical scheme of the present invention is further described With reference to embodiment.
Embodiment 1
A kind of lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, includes the following steps：
a）By LiNi0.32Co0.32Mn0.32Yb0.04O2Stoichiometric ratio weigh lithium carbonate, nickel oxide, cobalt oxide, manganese oxide
And ytterbium oxide, it is 1 to make the molar ratio of Li, Ni, Co, Mn and Yb：0.32：0.32：0.32：0.04, lithium carbonate, nickel oxide, oxidation
The total weight of cobalt, manganese oxide and ytterbium oxide is 200 parts by weight；
b）It is added the absolute ethyl alcohol of 200 parts by weight in the raw material weighed to step a, and ball milling 2 hours, takes out drying later
Obtain ytterbium doping nickle cobalt lithium manganate raw material；
c）The acetate fiber and 300 weights of 60 parts by weight are added into the ytterbium doping nickle cobalt lithium manganate raw material made from step b
The potassium chloride sodium chloride fused salt mixt for measuring part, adds the absolute ethyl alcohol of 600 parts by weight, and ball milling 6 hours, then dries；
d）To be sintered 4 hours at 750 DEG C through step c treated raw materials, sintering complete it is cooling after, wash with water institute
The powder obtained, and dry, ytterbium is made and adulterates nickel-cobalt lithium manganate material.
Embodiment 2
A kind of lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, includes the following steps：
a）By LiNi0.32Co0.32Mn0.32Yb0.04O2Stoichiometric ratio weigh lithium carbonate, nickel oxide, cobalt oxide, manganese oxide
And ytterbium oxide, it is 1 to make the molar ratio of Li, Ni, Co, Mn and Yb：0.32：0.32：0.32：0.04, lithium carbonate, nickel oxide, oxidation
The total weight of cobalt, manganese oxide and ytterbium oxide is 200 parts by weight；
b）It is added the absolute ethyl alcohol of 240 parts by weight in the raw material weighed to step a, and ball milling 3 hours, takes out drying later
Obtain ytterbium doping nickle cobalt lithium manganate raw material；
c）The acetate fiber and 400 weights of 75 parts by weight are added into the ytterbium doping nickle cobalt lithium manganate raw material made from step b
The potassium chloride sodium chloride fused salt mixt for measuring part, adds the absolute ethyl alcohol of 750 parts by weight, and ball milling 7 hours, then dries；
d）To be sintered 5 hours at 770 DEG C through step c treated raw materials, sintering complete it is cooling after, wash with water institute
The powder obtained, and dry, ytterbium is made and adulterates nickel-cobalt lithium manganate material.
Embodiment 3
A kind of lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, includes the following steps：
a）By LiNi0.32Co0.32Mn0.32Yb0.04O2Stoichiometric ratio weigh lithium carbonate, nickel oxide, cobalt oxide, manganese oxide
And ytterbium oxide, it is 1 to make the molar ratio of Li, Ni, Co, Mn and Yb：0.32：0.32：0.32：0.04, lithium carbonate, nickel oxide, oxidation
The total weight of cobalt, manganese oxide and ytterbium oxide is 200 parts by weight；
b）It is added the absolute ethyl alcohol of 280 parts by weight in the raw material weighed to step a, and ball milling 4 hours, takes out drying later
Obtain ytterbium doping nickle cobalt lithium manganate raw material；
c）The acetate fiber and 500 weights of 90 parts by weight are added into the ytterbium doping nickle cobalt lithium manganate raw material made from step b
The potassium chloride sodium chloride fused salt mixt for measuring part, adds the absolute ethyl alcohol of 900 parts by weight, and ball milling 8 hours, then dries；
d）To be sintered 6 hours at 800 DEG C through step c treated raw materials, sintering complete it is cooling after, wash with water institute
The powder obtained, and dry, ytterbium is made and adulterates nickel-cobalt lithium manganate material.
Embodiment 4
A kind of lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, includes the following steps：
a）By LiNi0.32Co0.32Mn0.32Yb0.04O2Stoichiometric ratio weigh lithium carbonate, nickel oxide, cobalt oxide, manganese oxide
And ytterbium oxide, it is 1 to make the molar ratio of Li, Ni, Co, Mn and Yb：0.32：0.32：0.32：0.04, lithium carbonate, nickel oxide, oxidation
The total weight of cobalt, manganese oxide and ytterbium oxide is 200 parts by weight；
b）It is added the absolute ethyl alcohol of 200 parts by weight in the raw material weighed to step a, and ball milling 2 hours, takes out drying later
Obtain ytterbium doping nickle cobalt lithium manganate raw material；The rotating speed of ball milling is 2500rpm, and temperature is 50 DEG C when drying
c）The acetate fiber and 300 weights of 60 parts by weight are added into the ytterbium doping nickle cobalt lithium manganate raw material made from step b
The potassium chloride sodium chloride fused salt mixt for measuring part, adds the absolute ethyl alcohol of 600 parts by weight, and ball milling 6 hours, then dries；Its
In, a diameter of 0.1 μm of acetate fiber, 5 μm of length, in sodium chloride and potassium chloride fused salt mixt, mole of potassium chloride and sodium chloride
Than 1：1, the rotating speed of ball milling is 1500rpm, and temperature is 50 DEG C when drying；
d）First will keep the temperature 2 hours at 600 DEG C, then be sintered 4 hours at 750 DEG C, sintering through step c treated raw materials
After the completion, ytterbium adulterates nickel-cobalt lithium manganate material when being cooled to 150 DEG C, puts into the powder of cleaning gained in water, and at 100 DEG C
Drying is made ytterbium and adulterates nickel-cobalt lithium manganate material.
Embodiment 5
A kind of lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, includes the following steps：
a）By LiNi0.32Co0.32Mn0.32Yb0.04O2Stoichiometric ratio weigh lithium carbonate, nickel oxide, cobalt oxide, manganese oxide
And ytterbium oxide, it is 1 to make the molar ratio of Li, Ni, Co, Mn and Yb：0.32：0.32：0.32：0.04, lithium carbonate, nickel oxide, oxidation
The total weight of cobalt, manganese oxide and ytterbium oxide is 200 parts by weight；
b）It is added the absolute ethyl alcohol of 240 parts by weight in the raw material weighed to step a, and ball milling 3 hours, takes out drying later
Obtain ytterbium doping nickle cobalt lithium manganate raw material；The rotating speed of ball milling is 2800rpm, and temperature is 55 DEG C when drying
c）The acetate fiber and 400 weights of 75 parts by weight are added into the ytterbium doping nickle cobalt lithium manganate raw material made from step b
The potassium chloride sodium chloride fused salt mixt for measuring part, adds the absolute ethyl alcohol of 750 parts by weight, and ball milling 7 hours, then dries；Its
In, a diameter of 0.5 μm of acetate fiber, 10 μm of length, in sodium chloride and potassium chloride fused salt mixt, mole of potassium chloride and sodium chloride
Than 1：1.3, the rotating speed of ball milling is 1800rpm, and temperature is 55 DEG C when drying；
d）First will keep the temperature 2.5 hours at 630 DEG C, then be sintered 5 hours at 780 DEG C, burning through step c treated raw materials
After the completion of knot, ytterbium adulterates nickel-cobalt lithium manganate material when being cooled to 180 DEG C, puts into the powder of cleaning gained in water, and at 120 DEG C
Lower drying is made ytterbium and adulterates nickel-cobalt lithium manganate material.
Embodiment 6
A kind of lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, includes the following steps：
a）By LiNi0.32Co0.32Mn0.32Yb0.04O2Stoichiometric ratio weigh lithium carbonate, nickel oxide, cobalt oxide, manganese oxide
And ytterbium oxide, it is 1 to make the molar ratio of Li, Ni, Co, Mn and Yb：0.32：0.32：0.32：0.04, lithium carbonate, nickel oxide, oxidation
The total weight of cobalt, manganese oxide and ytterbium oxide is 200 parts by weight；
b）It is added the absolute ethyl alcohol of 280 parts by weight in the raw material weighed to step a, and ball milling 4 hours, takes out drying later
Obtain ytterbium doping nickle cobalt lithium manganate raw material；The rotating speed of ball milling is 3000rpm, and temperature is 60 DEG C when drying
c）The acetate fiber and 500 weights of 90 parts by weight are added into the ytterbium doping nickle cobalt lithium manganate raw material made from step b
The potassium chloride sodium chloride fused salt mixt for measuring part, adds the absolute ethyl alcohol of 900 parts by weight, and ball milling 8 hours, then dries；Its
In, a diameter of 1 μm of acetate fiber, 15 μm of length, in sodium chloride and potassium chloride fused salt mixt, the molar ratio of potassium chloride and sodium chloride
1：1.5, the rotating speed of ball milling is 1500rpm, and temperature is 50 DEG C when drying；
d）First will keep the temperature 2 hours at 600 DEG C, then be sintered 4 hours at 750 DEG C, sintering through step c treated raw materials
After the completion, ytterbium adulterates nickel-cobalt lithium manganate material when being cooled to 150 DEG C, puts into the powder of cleaning gained in water, and at 140 DEG C
Drying is made ytterbium and adulterates nickel-cobalt lithium manganate material.
Detection and result：
1. carrying out surface topography test to thulium doped titanic acid lithium anode material obtained through SEM it is known that the thulium synthesized
Doped titanic acid lithium anode material is hollow tubular structure, and tube wall is coarse, similar with the pattern of mould material acetate fiber；
2. thulium doped titanic acid lithium anode material obtained is assembled lithium ion battery through lithium ion battery according to the prior art
High rate performance is tested, and under 1C multiplying powers, specific discharge capacity is in 175mAh/g or more, charge and discharge cycles 1000 times or more at normal temperatures
Its specific discharge capacity still maintains 145mAh/g or more.
Claims (8)
1. a kind of lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, it is characterised in that include the following steps：
a）By LiNi0.32Co0.32Mn0.32Yb0.04O2Stoichiometric ratio weigh lithium carbonate, nickel oxide, cobalt oxide, manganese oxide and oxygen
Change ytterbium, it is 1 to make the molar ratio of Li, Ni, Co, Mn and Yb：0.32：0.32：0.32：0.04, lithium carbonate, nickel oxide, cobalt oxide, oxygen
The total weight for changing manganese and ytterbium oxide is 200 parts by weight；
b）The absolute ethyl alcohol of 200~280 parts by weight, and ball milling 2~4 hours are added in the raw material weighed to step a, takes out later
Drying obtains ytterbium doping nickle cobalt lithium manganate raw material；
c）To made from step b ytterbium doping nickle cobalt lithium manganate raw material in be added 60~90 parts by weight acetate fiber and 300~
The potassium chloride sodium chloride fused salt mixt of 500 parts by weight, adds the absolute ethyl alcohol of 600~900 parts by weight, and ball milling 6~8 is small
When, then dry；The acetate fiber is the acetate fiber for adding titanium dioxide as inorganic filler；
d）To be sintered 4~6 hours at 750~800 DEG C through step c treated raw materials, sintering complete it is cooling after, it is clear with water
The powder of gained is washed, and is dried, ytterbium is made and adulterates nickel-cobalt lithium manganate material.
2. according to a kind of lithium ion battery preparation method of ytterbium doping nickel-cobalt lithium manganate material described in claim 1, feature
It is：Acetate fiber in the step c, a diameter of 0.1~1 μm, 5~15 μm of length.
3. a kind of lithium ion battery according to claim 1 or 2 adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium,
It is characterized in that：The length of acetate fiber is 5~10 μm in the step c.
4. a kind of lithium ion battery according to claim 1 adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, special
Sign is：In sodium chloride and potassium chloride fused salt mixt in the step c, the molar ratio 1 of potassium chloride and sodium chloride：1~1.5.
5. a kind of lithium ion battery according to claim 1 adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, special
Sign is：In the step d, when sintering, first keeps the temperature 2~3 hours at 600~650 DEG C.
6. a kind of lithium ion battery according to claim 1 adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, special
Sign is：The rotating speed of ball milling is 2500~3000rpm in the step b, and the rotating speed of ball milling is 1500~2000rpm in step c.
7. a kind of lithium ion battery according to claim 1 adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, special
Sign is：Temperature is 50~60 DEG C when being dried in the step b, and temperature is 50~60 DEG C when being dried in step c, is dried in step d
Temperature when dry is 100~140 DEG C.
8. a kind of lithium ion battery according to claim 1 adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium, special
Sign is：In the step d, the ytterbium after the completion of being sintered adulterates nickel-cobalt lithium manganate material when being cooled to 150~200 DEG C, input
It cleans in water, dries later.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610726434.9A CN106257715B (en) | 2016-08-26 | 2016-08-26 | Lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610726434.9A CN106257715B (en) | 2016-08-26 | 2016-08-26 | Lithium ion battery adulterates the preparation method of nickel-cobalt lithium manganate material with ytterbium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106257715A CN106257715A (en) | 2016-12-28 |
| CN106257715B true CN106257715B (en) | 2018-10-02 |
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