CN108767246A - A kind of preparation method of the nickelic tertiary cathode material of lithium ion battery - Google Patents
A kind of preparation method of the nickelic tertiary cathode material of lithium ion battery Download PDFInfo
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- CN108767246A CN108767246A CN201810692695.2A CN201810692695A CN108767246A CN 108767246 A CN108767246 A CN 108767246A CN 201810692695 A CN201810692695 A CN 201810692695A CN 108767246 A CN108767246 A CN 108767246A
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- H—ELECTRICITY
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Abstract
The present invention provides a kind of preparation method of the nickelic tertiary cathode material of lithium ion battery, includes the following steps：Step（1）:Nickelic ternary anode material precursor is sufficiently mixed with lithium source;Step（2）:Well-mixed material dress alms bowl is pre-sintered;Step（3）:It carries out the nickelic tertiary cathode material after pre-sintering to break up processing;Step（4）:The nickelic tertiary cathode material for breaing up processing is subjected to double sintering using rotary furnace;Step（5）:It will be merged with covering solid phase after the crushing material of double sintering, the material of fusion be then subjected to cladding sintering；Step（6）:The material for being sintered and completing will be coated by breaing up, sieve, criticize and mix, except magnetic obtains finished product.The present invention carries out the sintering of nickelic tertiary cathode material using rotary furnace, and contact of the material with oxygen is more abundant compared with traditional handicraft, and the process time is shorter, technique more preferably controls, and operation is simpler, environmentally friendly, it is low for equipment requirements, the advantages that waste of raw materials is few, superior product quality.
Description
Technical field
The invention belongs to energy storage material and electrochemical fields, are related to a kind of system of the nickelic tertiary cathode material of lithium ion battery
Preparation Method
Background technology
Tertiary cathode material has become because it has many advantages, such as higher energy density and relatively low price
The first choice of power battery, the application situation on electric vehicle EV and hybrid-power electric vehicle HEV are very swift and violent.But
Common ternary material energy density used at present is comparatively still relatively low, and nickelic tertiary cathode material is on power battery
Using schedule has been put on, nickelic ternary material is expected to be widely used as the anode of lithium ion battery in the near future
Material.Nickelic ternary material be used as anode material for lithium-ion batteries major advantage be：Lithium storage content is high, and discharge platform is relatively flat
Surely.Its disadvantage is mainly that thermal stability needs to be further increased with safety, and electrode machining performance needs further to improve.
It is that nickelic ternary material will be made in oxygen atmosphere to limit the widely used technological difficulties of nickelic tertiary cathode material
Standby, high to sintering kiln requirement, yield is relatively low in production process.With the maturing of preparation process, the improvement of agglomerating plant is high
Nickel tertiary cathode material is expected to the mainstream positive electrode as batteries of electric automobile.
Invention content
The problem of knack solution of the present invention is the technological difficulties overcome in existing nickelic tertiary cathode material preparation process, is used
Rotary furnace is sintered nickelic tertiary cathode material in oxygen atmosphere, compared with conventional solid sintering process, rotary furnace sintering process
It is a dynamic sinter process, contact of the material with oxygen is more abundant, is chemically reacted in sintering process more fully, in sintering process
Process time is shorter, and oxygen consumption is less, and energy consumption is lower, and resulting materials Elemental redistribution is uniform, and product quality is more preferable.The preparation
Method is more suitable for the nickelic tertiary cathode material of large-scale production.
The present invention provides a kind of preparation methods of the nickelic tertiary cathode material of lithium ion battery, include the following steps：
Step（1）:Nickelic ternary anode material precursor is sufficiently mixed with lithium source;
Step（2）:Well-mixed material dress alms bowl is pre-sintered;
Step（3）:It carries out the nickelic tertiary cathode material after pre-sintering to break up processing;
Step（4）:The nickelic tertiary cathode material for breaing up processing is subjected to double sintering using rotary furnace;
Step（5）:It will be merged with covering solid phase after the crushing material of double sintering, the material of fusion be then subjected to cladding burning
Knot；
Step（6）:The material for being sintered and completing will be coated by breaing up, sieve, criticize and mix, except magnetic obtains finished product.
Preferably, the step（1）In, nickelic tertiary cathode presoma is NCM811, and the nickel contents such as NCA are more than or equal to 47
The hydroxide nickel cobalt manganese or nickel cobalt aluminium ternary precursor of wt.%.
Preferably, the step（1）In, lithium source uses in lithium carbonate, lithium hydroxide, lithium nitrate, lithium oxalate and lithium acetate
One or several kinds.
Preferably, the step（1）In, the molar ratio of the presoma used and lithium source is 1：1-1.1.
Preferably, the step（2）In saggar used use mullite or aluminium oxide saggar, material fill alms bowl amount 4-7 public affairs
Jin.
Preferably, the step（2）Middle 400-600 DEG C of institute's calcined temperature is pre-sintered time 2-8 hour, heating rate 1-3
℃/min。
Preferably, the step（3）Semi-finished product after middle pre-sintering are broken up using mechanical crusher.
Preferably, the step（4）Middle to carry out double sintering using rotary furnace, the boiler tube of rotary furnace need to use anti-oxidant resistance to
Caustic corrosion material boiler tube.
Preferably, the step（4）The sintering temperature of nickelic ternary material is 700-850 DEG C, sintering time 7-12h, is burnt
It ties atmosphere and uses oxygen.
Preferably, the step（5）It is middle to be consolidated the material of the double sintering after crushing with covering using high speed fusion machine
Blend, covering be grain size D50 in the magnesia of 5-30nm, aluminium oxide, titanium oxide, zirconium oxide etc., the dosage of covering exists
300—2000PPM.Then the material of fusion is subjected to cladding sintering, coats the temperature of sintering at 500-750 DEG C, sintering time
2-8h。
Preferably, the step（6）Material is after naturally cooling to 100-150 DEG C after middle sintering, by breaing up, classification,
It criticizes and mixes, removes magnetic, the processes such as packaging obtain final products, wherein breaing up, are classified, and criticize and mix, except the processes section material such as magnetic will do environment
Control, temperature are maintained at 25 DEG C or so, and ambient humidity is less than 10%.
The present invention prepares nickelic tertiary cathode material using rotary furnace combination two-step method technique, compared with traditional handicraft
Contact of the material with oxygen is more preferable, reaction is more abundant, and sintering time is shorter, and energy consumption is lower, and oxygen consumption is less, and manufacturing cycle is more
Short, operation is simpler, environmentally friendly, the advantages that waste of raw materials is few, superior product quality.
Description of the drawings
Fig. 1 is the shape appearance figure of the nickelic tertiary cathode material prepared according to embodiment.
Fig. 2 is the XRD diagram of the nickelic tertiary cathode material prepared according to embodiment.
Fig. 3 is the charge-discharge performance figure of the nickelic tertiary cathode material prepared according to embodiment.
Specific implementation mode
Below in conjunction with the accompanying drawings, the preferably embodiment of the present invention is described in further detail：
Embodiment 1
Nickel content is more than or equal to the nickel hydroxide cobalt-manganese ternary presoma NCM811 of 47 wt.%, it is fully mixed with lithium source lithium carbonate
It closes, presoma is 1 with lithium source molar ratio：1;Material dress alms bowl after being sufficiently mixed is pre-sintered in roller kilns at 400 DEG C, in advance
Sintering time 2 hours, 1 DEG C/min of heating rate;Nickelic tertiary cathode material after pre-sintering is put into the pulverizer of interior edge ceramics
It carries out breaing up processing;The nickelic tertiary cathode material for breaing up processing is carried out using the rotary furnace of anti-oxidant alkali corrosion resistance material boiler tube
Double sintering, sintering temperature are 700 DEG C, sintering time 12h, and sintering atmosphere uses oxygen, 1 rev/min of the velocity of rotation of converter;
Material after double sintering merges machine with covering aluminium oxide after crushing by solid phase completes solid phase fusion process, covering
Dosage in 300ppm, then the material of fusion be put into roller kilns and carries out cladding sintering, coat 500 DEG C of sintering temperature,
Sintering time 8h；Material, by breaing up, sieves after naturally cooling to 100 DEG C, criticizes and mix, except magnetic obtains finished product after sintering.
Embodiment 2
Nickel content is more than or equal to the nickel cobalt aluminum hydroxide ternary precursor NCA of 47 wt.%, it is fully mixed with lithium source lithium hydroxide
It closes, presoma is 1 with lithium source molar ratio： 1.1;Pre-burning is carried out at 600 DEG C in roller kilns after material dress alms bowl after being sufficiently mixed
Knot is pre-sintered 8 hours time, 3 DEG C/min of heating rate;Nickelic tertiary cathode material after pre-sintering is put into the powder of interior edge ceramics
Broken machine carries out breaing up processing;The nickelic tertiary cathode material for breaing up processing uses the rotary furnace of anti-oxidant alkali corrosion resistance material boiler tube
Double sintering is carried out, sintering temperature is 850 DEG C, sintering time 7h, and sintering atmosphere uses oxygen, 10 turns of the velocity of rotation of converter/
Minute;Machine is merged by solid phase with covering magnesia after crushing material after double sintering and completes solid phase fusion process, cladding
Then the material of fusion be put into roller kilns and carries out cladding sintering, coat sintering temperature 750 by the dosage of agent in 2000ppm
DEG C, sintering time 2h；Material is after naturally cooling to 150 DEG C after sintering, by breaing up, sieves, batch mixed, except magnetic obtain at
Product.
Embodiment 3
Nickel content is more than or equal to the nickel hydroxide cobalt-manganese ternary presoma NCM811 of 47 wt.%, it is fully mixed with lithium source lithium nitrate
It closes, presoma is 1 with lithium source molar ratio：1.05;Material after being sufficiently mixed fills alms bowl and carries out pre-burning at 500 DEG C in roller kilns
Knot is pre-sintered 5 hours time, 2 DEG C/min of heating rate;Nickelic tertiary cathode material after pre-sintering is put into the powder of interior edge ceramics
Broken machine carries out breaing up processing;The nickelic tertiary cathode material for breaing up processing uses the rotary furnace of anti-oxidant alkali corrosion resistance material boiler tube
Double sintering is carried out, sintering temperature is 770 DEG C, sintering time 10h, and sintering atmosphere uses oxygen, 5 turns of the velocity of rotation of converter/
Minute;Machine is merged by solid phase with covering titanium oxide after crushing material after double sintering and completes solid phase fusion process, cladding
Then the material of fusion be put into rotary kiln and carries out cladding sintering, coat sintering temperature 600 by the dosage of agent in 1000ppm
DEG C, sintering time 5h；Material is after naturally cooling to 130 DEG C after sintering, by breaing up, sieves, batch mixed, except magnetic obtain at
Product.
Embodiment 4
Nickel content is more than or equal to the nickel cobalt aluminum hydroxide ternary precursor NCA of 47 wt.%, is sufficiently mixed with lithium source lithium oxalate,
Presoma is 1 with lithium source molar ratio：1.02;Material dress alms bowl after being sufficiently mixed is pre-sintered in roller kilns at 450 DEG C, in advance
Sintering time 6 hours, 1.5 DEG C/min of heating rate;Nickelic tertiary cathode material after pre-sintering is put into the crushing of interior edge ceramics
Machine carries out breaing up processing;Break up the nickelic tertiary cathode material of processing using anti-oxidant alkali corrosion resistance material boiler tube rotary furnace into
Row double sintering, sintering temperature are 820 DEG C, sintering time 9h, and sintering atmosphere uses oxygen, 4 revs/min of the velocity of rotation of converter
Clock;Machine is merged by solid phase with covering zirconium oxide after crushing material after double sintering and completes solid phase fusion process, covering
Dosage in 1500ppm, then the material of fusion be put into rotary kiln and carries out cladding sintering, coat 550 DEG C of sintering temperature,
Sintering time 6h；Material, by breaing up, sieves after naturally cooling to 110 DEG C, criticizes and mix, except magnetic obtains finished product after sintering.
Embodiment 5
Nickel content is more than or equal to the nickel hydroxide cobalt-manganese ternary presoma NCM811 of 47 wt.%, it is fully mixed with lithium source lithium acetate
It closes, presoma is 1 with lithium source molar ratio：1.06;Material after being sufficiently mixed fills alms bowl and carries out pre-burning at 550 DEG C in roller kilns
Knot is pre-sintered 4 hours time, 2.5 DEG C/min of heating rate;Nickelic tertiary cathode material after pre-sintering is put into interior edge ceramics
Pulverizer carries out breaing up processing;The nickelic tertiary cathode material for breaing up processing uses the revolution of anti-oxidant alkali corrosion resistance material boiler tube
Stove carries out double sintering, and sintering temperature is 700 DEG C, sintering time 11h, and sintering atmosphere uses oxygen, the velocity of rotation 7 of converter
Rev/min;Machine is merged by solid phase with covering aluminium oxide after crushing material after double sintering and completes solid phase fusion process, packet
It covers the dosage of agent in 800ppm, then carries out the material of fusion to be put into rotary kiln carrying out cladding sintering, coat sintering temperature 650
DEG C, sintering time 3h；Material is after naturally cooling to 140 DEG C after sintering, by breaing up, sieves, batch mixed, except magnetic obtain at
Product.
Fig. 1 is the SEM figures of nickelic tertiary cathode material prepared by the embodiment of the present invention, as can be seen from the figure nickelic ternary
Spherical shape of uniform size is presented in positive electrode, and the secondary spherical structure that primary particle agglomerates into keeps relatively complete, grain
For diameter at 10 μm or so, the material homogeneity of this method mixing is good, prepares that product homogeneity is good, quality is higher.
Fig. 2 is the XRD diagram of nickelic tertiary cathode material prepared by the embodiment of the present invention, diffraction maximum and standard stratiform α-
The diffraction maximum of NaFeO2 crystal forms corresponds to preferably, illustrates that it is layer structure, and diffraction maximum is sharp enough, shows that crystallinity is good,
Material can form ideal solid solution.
Fig. 3 is the charge-discharge performance figure of nickelic tertiary cathode material prepared by the embodiment of the present invention, as can be seen from the figure
Its specific capacity reaches 200mAh/g, and its capacity attenuation is seldom after 50 cycles.
Claims (10)
1. a kind of preparation method of the nickelic tertiary cathode material of lithium ion battery, which is characterized in that include the following steps：
Step（1）:Nickelic ternary anode material precursor is sufficiently mixed with lithium source;
Step（2）:Well-mixed material dress alms bowl is pre-sintered;
Step（3）:It carries out the nickelic tertiary cathode material after pre-sintering to break up processing;
Step（4）:The nickelic tertiary cathode material for breaing up processing is subjected to double sintering using rotary furnace;
Step（5）:It will be merged with covering solid phase after the crushing material of double sintering, the material of fusion be then subjected to cladding burning
Knot；
Step（6）:The material for being sintered and completing will be coated by breaing up, sieve, criticize and mix, except magnetic obtains finished product.
2. preparation method as described in claim 1, which is characterized in that the step（1）In, nickelic tertiary cathode presoma is
The nickel contents such as NCM811, NCA are more than or equal to the hydroxide nickel cobalt manganese or nickel cobalt aluminium ternary precursor of 47 wt.%.
3. preparation method as described in claim 1, which is characterized in that the step（1）In, lithium source is using lithium carbonate, hydrogen-oxygen
Change the one or several kinds in lithium, lithium nitrate, lithium oxalate and lithium acetate.
4. preparation method as described in claim 1, which is characterized in that the step（1）In, the presoma used and lithium source
Molar ratio be 1：1-1.1.
5. preparation method as described in claim 1, which is characterized in that the step（2）In saggar used using mullite or
Aluminium oxide saggar, material fill alms bowl amount at 4-7 kilograms.
6. preparation method as described in claim 1, which is characterized in that the step（2）Middle 400-600 DEG C of institute's calcined temperature,
It is pre-sintered time 2-8 hour, 1-3 DEG C of heating rate/min.
7. preparation method as described in claim 1, which is characterized in that the step（4）It is middle that secondary burning is carried out using rotary furnace
Knot, the boiler tube of rotary furnace need to use anti-oxidant alkali corrosion resistance material boiler tube.
8. preparation method as described in claim 1, which is characterized in that the step（4）The sintering temperature of nickelic ternary material
It it is 700-850 DEG C, sintering time 7-12h, sintering atmosphere uses oxygen.
9. preparation method as described in claim 1, which is characterized in that the step（5）It is middle to adopt the sinter of pulverization process
It is merged with covering solid phase with high speed fusion machine, the material of fusion is then subjected to cladding sintering, the temperature for coating sintering exists
500-750 DEG C, sintering time 2-8h；The covering uses grain size D50 for the magnesia of 5-30nm, aluminium oxide, titanium oxide, oxygen
Change at least one of zirconium, the dosage of covering is in 300-2000PPM.
10. the preparation method of the nickelic tertiary cathode material of a kind of lithium ion battery according to claim 1, which is characterized in that
The step（6）Material, by breaing up, is classified after naturally cooling to 100-150 DEG C, criticizes and mix, remove magnetic, packaging etc. after middle sintering
Process obtains final products.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686968A (en) * | 2018-12-12 | 2019-04-26 | 无锡晶石新型能源股份有限公司 | The preparation method of high voltage nickel cobalt-manganese ternary material |
| CN109686971A (en) * | 2018-12-12 | 2019-04-26 | 无锡晶石新型能源股份有限公司 | A kind of production method and production rotary kiln of nickelic polynary positive pole material |
| CN110444756A (en) * | 2019-08-19 | 2019-11-12 | 湖南金富力新能源股份有限公司 | The anode material for lithium-ion batteries and preparation method that are prepared with pyroreaction device and application |
| CN111362307A (en) * | 2020-03-09 | 2020-07-03 | 晋江云智新材料科技有限公司 | Preparation method of single-crystal lithium manganate positive electrode material for lithium ion battery |
| CN112125353A (en) * | 2020-05-26 | 2020-12-25 | 宜宾锂宝新材料有限公司 | Preparation method of high-nickel ternary cathode material for lithium ion battery |
| CN112794371A (en) * | 2020-12-31 | 2021-05-14 | 宜宾锂宝新材料有限公司 | Low-cost high-nickel ternary lithium ion battery cathode material and preparation method thereof |
| CN112960704A (en) * | 2021-02-01 | 2021-06-15 | 福建金山锂科新材料有限公司 | Preparation method of high-voltage lithium nickel manganese oxide positive electrode material |
| CN116544406A (en) * | 2023-07-07 | 2023-08-04 | 宜宾锂宝新材料有限公司 | Positive electrode material, preparation method thereof, positive electrode and lithium ion battery |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686968A (en) * | 2018-12-12 | 2019-04-26 | 无锡晶石新型能源股份有限公司 | The preparation method of high voltage nickel cobalt-manganese ternary material |
| CN109686971A (en) * | 2018-12-12 | 2019-04-26 | 无锡晶石新型能源股份有限公司 | A kind of production method and production rotary kiln of nickelic polynary positive pole material |
| CN110444756A (en) * | 2019-08-19 | 2019-11-12 | 湖南金富力新能源股份有限公司 | The anode material for lithium-ion batteries and preparation method that are prepared with pyroreaction device and application |
| CN110444756B (en) * | 2019-08-19 | 2020-12-01 | 湖南金富力新能源股份有限公司 | Lithium ion battery anode material prepared by high-temperature reaction device, preparation method and application |
| CN111362307A (en) * | 2020-03-09 | 2020-07-03 | 晋江云智新材料科技有限公司 | Preparation method of single-crystal lithium manganate positive electrode material for lithium ion battery |
| CN112125353A (en) * | 2020-05-26 | 2020-12-25 | 宜宾锂宝新材料有限公司 | Preparation method of high-nickel ternary cathode material for lithium ion battery |
| CN112125353B (en) * | 2020-05-26 | 2021-10-01 | 宜宾锂宝新材料有限公司 | Preparation method of high-nickel ternary cathode material for lithium ion battery |
| CN112794371A (en) * | 2020-12-31 | 2021-05-14 | 宜宾锂宝新材料有限公司 | Low-cost high-nickel ternary lithium ion battery cathode material and preparation method thereof |
| CN112960704A (en) * | 2021-02-01 | 2021-06-15 | 福建金山锂科新材料有限公司 | Preparation method of high-voltage lithium nickel manganese oxide positive electrode material |
| CN116544406A (en) * | 2023-07-07 | 2023-08-04 | 宜宾锂宝新材料有限公司 | Positive electrode material, preparation method thereof, positive electrode and lithium ion battery |
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Application publication date: 20181106 |
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| RJ01 | Rejection of invention patent application after publication |