CN109950497A - A kind of nickelic positive electrode and preparation method thereof with uniform clad - Google Patents
A kind of nickelic positive electrode and preparation method thereof with uniform clad Download PDFInfo
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Abstract
The invention discloses a kind of nickelic positive electrode and preparation method thereof with uniform clad, the preparation method include the following steps: that deionized water and nickelic positive electrode is added in (1) in a reservoir, stir evenly, obtain suspension；(2) metal soluble salt is slowly added into step (1) described suspension, is stirred evenly, is filtered by vacuum, dehydrated alcohol rinses, and drains, oven drying obtains dried material；(3) step (2) described dried material is placed in saggar, high temperature sintering is carried out under the Muffle furnace oxygen atmosphere of preheating, it is cooling, it is crushed, sieving obtains the nickelic positive electrode with uniform clad.The nickelic positive electrode of the present invention has height ratio capacity, long circulating, better thermal stability and structural stability, simultaneously as there is the operation of washing, greatly reduce nickelic positive electrode surface lithium hydroxide and lithium carbonate amount, reduce material powder resistance, improve first effect, increase specific capacity, reduces nickelic positive electrode pH value.
Description
Technical field
The present invention relates to technical field of lithium ion, and in particular to a kind of nickelic positive electrode with uniform clad
And preparation method thereof.
Background technique
Lithium ion battery technology from eighties of last century the eighties be born since develop it is very fast, with arriving for intelligent epoch
Come, lithium ion battery also more shows the development of more and more important influence power, especially new-energy automobile and popularizes, to dynamic
The requirement of power battery is also more stringent.Stratiform nickle cobalt lithium manganate or nickel cobalt lithium aluminate ternary material are a kind of great development prospects
Material such as cobalt acid lithium, lithium nickelate, LiMn2O4, has that at low cost, discharge capacity is big, cycle performance compared with other positive electrodes
Well, the advantages that thermal stability is good, structure is more stable.But ternary material, especially nickelic ternary material is in lithium ion deintercalation
Charge and discharge cycles during can all generate a degree of decaying, and release heat and gas, influence cycle performance and safety
Performance, certain irreversible change can also occur for material crystal structure in cyclic process, and electrolyte and positive electrode directly connect
Touching further causes more side reactions to occur.
Method for coating using material surface is a kind of effective means for improving positive electrode performance.Prevent electrolyte with just
The direct contact of pole material, while HF present in Electolyte-absorptive generate metal fluoride passivating film, effective to improve anode
Stability of material and chemical property, the safety to battery, stability generate positive effect.
There are many kinds of currently used cladding means, but still there is cumbersome, higher cost mostly, to raw material grain
Degree requires stringenter, it usually needs the problems such as Nano grade.As Chinese patent CN109360969A provides a kind of aluminium oxide packet
Cover anode material for lithium-ion batteries and preparation method thereof, including the following steps: by anode material for lithium-ion batteries, solvent, carbonic acid
Salt/bicarbonate and aluminium salt mixing, and ultrasonic reaction, generate precipitating；By the precipitating microwave heating, product is obtained；It is described
For aluminium salt in terms of aluminium element, quality is the 0.5%~2.5% of the anode material for lithium-ion batteries.
Chinese patent CN109244407A is related to cell positive material technical field, especially a kind of magnesia, aluminium oxide
The method that cladding nickel-cobalt lithium manganate cathode material is blended, by magnesia is molten using magnesium ion solution and aluminium ion with aluminium oxide
Liquid blending method carries out processing nickel-cobalt lithium manganate material, makes it possible to be formed the nickel cobalt mangaic acid that magnesia and aluminium oxide coat jointly
Lithium material improves the circulating ratio stability of nickel-cobalt lithium manganate material, improves the property of nickel-cobalt lithium manganate cathode material
Energy.The method that cladding nickel-cobalt lithium manganate cathode material is blended in a kind of this magnesia, aluminium oxide, which is characterized in that including following step
It is rapid:
(1) in water by lithium sulfate, nanometer spherical nickel cobalt manganese hydroxide precursor and polyethylene glycol, auxiliary using ultrasound
It helps, magnetic agitation 2~4h of decentralized processing, heats evaporating water, crush, form uniform intermediate mixture；
(2) intermediate mixture is used into 300~400 DEG C of 3~5h of sintering processes, and during the sintering process, be constantly filled with
Oxygen；It turns off oxygen to be filled with, adjustment temperature is 500~600 DEG C of 1~2h of heat treatment, obtains nickle cobalt lithium manganate initial material；
(3) nickle cobalt lithium manganate initial material is placed in magnesium ion solution, after impregnating 1~2h, ammonia spirit is added, stirring is equal
Even, filtering, being placed in temperature is 3~5h of sintering processes at 700~800 DEG C, and during the sintering process, is constantly filled with oxygen；
(4) magnesium ion, aluminium ion mixed solution are prepared；The nickel-cobalt lithium manganate material that step (3) sintering is completed is added to
It is uniform using magnetic stirrer in mixed solution, ammonia spirit is added while stirring, clean, filtering, drying to get.
It is higher with ingredient requirement to instrument and equipment as described above, existing method for coating is extremely complex, at the same cost compared with
Greatly, it is unfavorable for industrialization large-scale production.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the technological deficiency of background technique, provide a kind of with uniformly cladding
The nickelic positive electrode and preparation method thereof of layer.The present invention prepares uniform coated metal oxide by liquid phase method and reduces surface
The nickelic positive electrode of the lithium ion battery of remaining lithium.The nickelic positive electrode of the present invention has height ratio capacity, long circulating, preferably heat
Stability and structural stability greatly reduce nickelic positive electrode surface hydroxide simultaneously as there is the operation of washing
Lithium and lithium carbonate amount reduce material powder resistance, improve first effect, increase specific capacity, reduce nickelic positive electrode pH value.
It is as follows that the present invention solves technical solution used by above-mentioned technical problem:
A kind of preparation method of the nickelic positive electrode with uniform clad, includes the following steps:
(1) deionized water and nickelic positive electrode are added in a reservoir, stirs evenly, obtains suspension；
(2) metal soluble salt is slowly added into step (1) described suspension, is stirred evenly, is filtered by vacuum, anhydrous second
Alcohol rinses, and drains, oven drying obtains dried material；
(3) step (2) described dried material is placed in saggar, high temperature burning is carried out under the Muffle furnace oxygen atmosphere of preheating
Knot, it is cooling, it is crushed, sieving obtains the nickelic positive electrode with uniform clad；
In the step (1), the molecular formula of the nickelic positive electrode is LiNixMyO2, wherein 0.5≤x <, 1,0 < y <
0.5, x+y=1, the M are any one or a few in Co, Mn, Al, Ti, Mg；
In the step (2), the metal soluble salt is metal halide, metal nitrate, appointing in metal sulfate
Meaning is one or more of；Metallic element in the metal soluble salt is Al, Zr, Mg, Ti, Mn, Ni, Sn, Co, Zn, Ca, Sr,
One or more of Ba, Y, V, Nb, Ce and La.
Preferably, in the step (1), by mass, the additional amount of the deionized water: the nickelic positive electrode
Additional amount is 0.5~5: 1.
Preferably, in the step (1), the M is Co, Mn or the M is Co, Al.
It is highly preferred that the M is Co, Mn in the step (1).
Preferably, in the step (1), the nickelic positive electrode is LiNi0.80Co0.10Mn0.10O2、
LiNi0.90Co0.05Mn0.05O2、LiNi0.80Co0.10Mn0.10O2、LiNi0.92Co0.04Mn0.04O2、LiNi0.96Co0.02Mn0.02O2In
Any one.
Preferably, in the step (1), the speed of the stirring is 100~1000r/min, and the time of the stirring is 5
~30min.
It is highly preferred that in the step (1), the speed of the stirring is 500r/min, and the time of the stirring is
20min。
Preferably, in the step (2), by molar amount, the additional amount of the metal soluble salt: the nickelic positive material
The additional amount of material is 0.001~0.05.
Preferably, in the step (2), the metal soluble salt is CoCl2、MgCl2·6H2O、Al(NO3)3·9H2O、
ZnCl2、NbCl5In any one.
Preferably, in the step (2), the speed of the stirring is 100~1000r/min, and the time of the stirring is 5
~30min.
It is highly preferred that in the step (2), the speed of the stirring is 500r/min, and the time of the stirring is
20min。
Preferably, in the step (2), the temperature of the oven drying is 80~200 DEG C, the time of the oven drying
For 1~10h.
It is highly preferred that in the step (2), the temperature of the oven drying is 150 DEG C, and the time of the oven drying is
3h。
Preferably, in the step (3), concentration >=80% of the oxygen.
Preferably, in the step (3), the temperature of the sintering is 300~900 DEG C, the time of the sintering is 4~
15h。
It is highly preferred that the temperature of the sintering is 700 DEG C in the step (3), the time of the sintering is 10h.
A kind of nickelic positive electrode with uniform clad, is prepared using preparation method as described above.
Basic principle of the invention:
The present invention is in alkalinity using nickelic positive electrode in water, and material surface, especially nickelic positive electrode have
Remaining lithium hydroxide and lithium carbonate is added metal soluble salt, is slowly added into containing in positive electrode suspension, is sufficiently stirred
Uniformly, it is filtered by vacuum or is centrifuged, vacuum drying oven is dry, can be formed uniformly precipitate metal hydroxides on the surface of the material.It is placed in
In saggar, after high temperature sintering, metal hydroxides dehydration obtains the nickelic positive material with the uniform clad of metal oxide
Material.The material shows height ratio capacity, long circulating, better thermal stability and structural stability, simultaneously as there is washing
Operation, greatly reduces positive electrode surface lithium hydroxide and lithium carbonate amount, reduces material powder resistance, improves first effect,
Increase specific capacity, reduces positive electrode pH value.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention is evenly coated by liquid phase method mixed metal ion and nickelic positive electrode, side border ring cladding,
It is low in cost, it is low for equipment requirements, it is easy to operate, it is easy to accomplish large-scale production；
(2) material prepared by the present invention is provided for the safety and stability of battery due to the uniform cladding of metal oxide
It ensures；
(3) present invention is by high temperature sintering, due in the hydroxide dehydration on the nickelic positive electrode surface of activity
Activity is higher, generates excellent lithium ion conductor structure with the remaining lithium on nickelic positive electrode surface, guarantees that material structure is stablized
Property while improve lithium ion mobility rate；
(4) present invention mixed by simple liquid phase, uniformly cladding while reduce nickelic positive electrode surface p H and
Remaining lithium.
Detailed description of the invention
Fig. 1 is the SEM figure of the nickelic positive electrode obtained with uniform clad of the embodiment of the present invention 1；
Fig. 2 is the 1C/1C item before and after cladding of the nickelic positive electrode with uniform clad obtained of the embodiment of the present invention 2
Charge and discharge cycles situation map under part；
Fig. 3 is the nickelic positive electrode obtained with uniform clad of the embodiment of the present invention 3 Soft Roll electricity before and after cladding
Pond 7 days heat at 85 DEG C surveys (left side) and cold survey (right side) volume change situation；
Fig. 4 is that the 1C/1C before and after cladding of the nickelic positive electrode with uniform clad obtained of the embodiment of the present invention 4 fills
The loop condition figure that lower 45 DEG C of discharging condition；
Fig. 5 is to have the nickelic positive electrode (online in figure) of uniform clad made from the embodiment of the present invention 5 and do not wrap
The powder conductivity rate performance map of the nickelic positive electrode (offline in figure) covered at various pressures；
Fig. 6 is the preparation flow figure for the nickelic positive electrode that the present invention has uniform clad.
Specific embodiment
In order to better understand the content of the present invention, it is described further combined with specific embodiments below with attached drawing.Ying Li
Solution, these embodiments are only used for that the present invention is further described, rather than limit the scope of the invention.In addition, it should also be understood that,
After having read content of the present invention, person skilled in art makes some nonessential changes or adjustment to the present invention,
Still fall within protection scope of the present invention.
Embodiment 1
The deionized water of addition 300g and high nickel positive active material LiNi in 1L beaker0.80Co0.10Mn0.10O2200g,
Mixing speed 500r/min, it is to be mixed uniformly.It is slowly added to CoCl26.27g mixing speed is constant, continues to stir preferred 20min.
Obtained mixed liquor is filtered, vacuum pump filters, and is rinsed with 20mL dehydrated alcohol, drains, dry in 150 DEG C of convection ovens
3h obtains dried material, is placed in saggar, (oxygen concentration >=80%) 700 DEG C of sintering under the Muffle furnace oxygen atmosphere of preheating
React 10h.Slow cooling, broken sieving obtain the nickelic active substances in cathode materials with uniform clad.
Embodiment 2
The deionized water of addition 300g and high nickel positive active material LiNi in 1L beaker0.90Co0.05Mn0.05O2200g,
Mixing speed 500r/min, it is to be mixed uniformly.It is slowly added to MgCl2·6H2O4.88g mixing speed is constant, and it is preferred to continue stirring
20min.Obtained mixed liquor is filtered, vacuum pump filters, and is rinsed, is drained, in 150 DEG C of convection ovens with 20mL dehydrated alcohol
Middle drying 3h, obtains dried material, is placed in saggar, (oxygen concentration >=80%) 700 under the Muffle furnace oxygen atmosphere of preheating
DEG C sintering reaction 10h.Slow cooling, broken sieving obtain the nickelic active substances in cathode materials with uniform clad
LiNi0.90Co0.05Mn0.05O2。
Embodiment 3
The deionized water of addition 300g and high nickel positive active material LiNi in 1L beaker0.80Co0.10Mn0.10O2200g,
Mixing speed 500r/min, it is to be mixed uniformly.It is slowly added to Al (NO3)3·9H2O6.00g mixing speed is constant, continues to stir excellent
Select 20min.Obtained mixed liquor is filtered, vacuum pump filters, and is rinsed, is drained with 20mL dehydrated alcohol, dries in 150 DEG C of air blast
3h is dried in case, obtains dried material, is placed in saggar, under the Muffle furnace oxygen atmosphere of preheating (oxygen concentration >=80%)
700 DEG C of sintering reaction 10h.Slow cooling, broken sieving obtain the nickelic active substances in cathode materials with uniform clad
LiNi0.80Co0.10Mn0.10O2。
Embodiment 4
The deionized water of addition 300g and high nickel positive active material LiNi in 1L beaker0.92Co0.04Mn0.04O2200g,
Mixing speed 500r/min, it is to be mixed uniformly.It is slowly added to ZnCl23.40g mixing speed is constant, and it is preferred to continue stirring
20min.Obtained mixed liquor is filtered, vacuum pump filters, and is rinsed, is drained, in 150 DEG C of convection ovens with 20mL dehydrated alcohol
Middle drying 3h, obtains dried material, is placed in saggar, (oxygen concentration >=80%) 700 under the Muffle furnace oxygen atmosphere of preheating
DEG C sintering reaction 10h.Slow cooling, broken sieving obtain the nickelic active substances in cathode materials with uniform clad
LiNi0.92Co0.04Mn0.04O2。
Embodiment 5
The deionized water of addition 300g and high nickel positive active material LiNi in 1L beaker0.96Co0.02Mn0.02O2
200g, mixing speed 500r/min, it is to be mixed uniformly.It is slowly added to NbCl55.08g mixing speed is constant, and it is preferred to continue stirring
20min.Obtained mixed liquor is filtered, vacuum pump filters, and is rinsed, is drained, in 150 DEG C of convection ovens with 20mL dehydrated alcohol
Middle drying 3h, obtains dried material, is placed in saggar, (oxygen concentration >=80%) 700 under the Muffle furnace oxygen atmosphere of preheating
DEG C sintering reaction 10h.Slow cooling, broken sieving obtain the nickelic active substances in cathode materials with uniform clad
LiNi0.96Co0.02Mn0.02O2。
Effect example
(1) preparation of button CR2032 battery:
Using the technical solution well known to those skilled in the art that positive electrode is prepared into lithium ion battery, by embodiment
Nickelic positive electrode obtained in 1~5 is assembled into button cell, method particularly includes: by the height obtained with uniform clad
Nickel positive electrode, acetylene black and Kynoar (PVDF) are weighed by 94: 3: 3 mass ratioes, are uniformly mixed, and NMP is added and stirs 2h,
It at thick slurry, is uniformly coated on aluminium foil, rear 80 DEG C of vacuum bakeouts, tabletting, cuts the positive plate that diameter is 14mm.With straight
The pour lithium slice of diameter 16mm is as negative electrode tab, using 1mol/L LiPF6+DEC/EC (volume ratio 1: 1) mixed solution as electrolyte, with
Poly- Celgard propylene microcellular film is diaphragm, carries out being assembled into button CR2032 battery in the glove box full of argon gas.
(2) preparation of rectangular aluminum-shell battery:
A certain amount of NMP is added after de-airing mixer is sufficiently stirred in conductive agent and binder according to a certain percentage, is added
Enter pre-dry positive electrode (anode: binder: conductive agent=94.5: 2.5: 3) to stir evenly completely (uniform, stable
Paste), uniformly coating is cut by roll-in after pole piece vacuum drying in current collector aluminum foil, pole piece is cut out after slurry sieving
At the small pole piece of 374 × 41mm, weld after aluminium strip tab and graphite cathode piece well prepared in advance, diaphragm (401 × 42mm) into
Row winding is assembled into battery core, battery core is fitted into the aluminum-shell battery of 053048 model, using laser-beam welding machine by nut cap and battery
Case weld is secured, and 80 DEG C of dryings of vacuum are not less than 4 hours progress fluid injection (LiF of 1mol/L6PO4), normal temperature environment soaks after fluid injection
Profit 24 hours upper cabinet partial volumes, then seal liquid injection hole using the stainless steel steel ball that diameter is 1.3mm.
(3) preparation of soft-package battery:
A certain amount of NMP is added after de-airing mixer is sufficiently stirred in conductive agent and binder according to a certain percentage, is added
Enter pre-dry positive electrode (anode: binder: conductive agent=94.5: 2.5: 3) to stir evenly completely (uniform, stable
Paste), uniformly coating is cut by roll-in after pole piece vacuum drying in current collector aluminum foil, pole piece is cut out after slurry sieving
At the small pole piece of 374 × 41mm, weld after aluminium strip tab and graphite cathode piece well prepared in advance, diaphragm (401 × 42mm) into
Row winding is assembled into battery core, battery core is fitted into the Soft Roll aluminum plastic film of 053048 model, using top side seal machine to the side of soft battery
Side and top pole ear portions are sealed welding, and 80 DEG C of dryings of vacuum are not less than 4 hours progress fluid injection (LiF of 1mol/L6PO4),
The vacuum of progress in 1 hour is infiltrated after fluid injection to seal in advance, and 24 hours upper cabinet partial volumes are infiltrated under normal temperature environment of being honored as a queen in advance, are passed through after partial volume
Secondary vacuum sealing machine punctures Soft Roll air bag, carries out vacuum seal after extracting extra gas and electrolyte out.
Table 1 is the nickelic positive electrode and uncoated nickelic positive electrode obtained with uniform clad of embodiment 5
The comparative situation of the amount of surface lithium hydroxide and lithium carbonate is shown in Table 1；
The nickelic positive electrode and uncoated nickelic positive electrode table obtained with uniform clad of 1 embodiment of table 5
The comparative situation of the amount of face lithium hydroxide and lithium carbonate
As shown in table 1, material surface lithium hydroxide and lithium carbonate all obviously reduce very much after cladding, calculate elemental lithium
Content from the 2346ppm before cladding be reduced to cladding after 836ppm.
As shown in Figure 1, can see apparent uniform coating in particle surface.
As shown in Fig. 2, nickelic positive electrode cladding front and back is in 1C/1C charge and discharge cycles situation, it can be seen that 300 circle circulations
Capacity keeps obviously increasing to 93.0% after coating from 89% before cladding afterwards.
As shown in figure 3, prepared nickelic positive electrode be made into Soft Roll full battery at 85 DEG C 7 days heat survey volume increase by
65.60% before cladding is reduced to 43.30%, and cold survey volume, which increases, is reduced to 26.70% by 29.40%.
As shown in figure 4, the nickelic positive electrode of preparation recycles 300 weeks in 45 DEG C of conditions of 1C/1C charge and discharge, before coating
Capacity keep 89.4% rise appreciably to after cladding 92.8%.
As shown in figure 5, powder conductivity rate is significantly improved after nickelic positive electrode cladding, at 20kN by coating before
0.045 is increased to the 0.068S/cm after cladding.
The present invention prepares uniform coated metal oxide by liquid phase method and reduces the lithium ion battery height of surface residual lithium
Nickel positive electrode.
The present invention is in alkalinity using nickelic positive electrode in water, and metal soluble salt is added and uniformly generates gold on the surface of the material
Belong to that hydroxide is insoluble or micro-soluble material by high temperature sintering finally obtain the nickelic positive electrode that metal oxide uniformly coats,
And operation also reduces the lithium hydroxide and lithium carbonate amount of material surface in water, reduces nickelic positive electrode pH value, it is specific and
Speech:
(1) the method for the present invention is simple to operation, and cost is relatively low, easy to operate, is easy to industrialization large-scale production；
(2) present invention stirs slow precipitate metal hydroxide in water and is easy to implement uniform cladding；
(3) present invention passes through high temperature sintering, hydroxide dehydration production oxide cladding；
(4) present invention operates in water, dissolves the lithium hydroxide and lithium carbonate on nickelic positive electrode surface, and reduction is nickelic just
Pole material pH value.
Above description is not limitation of the present invention, and the present invention is also not limited to the example above.The art it is common
Within the essential scope of the present invention, the variations, modifications, additions or substitutions made also should belong to protection of the invention to technical staff
Range.
Claims (10)
1. a kind of preparation method of the nickelic positive electrode with uniform clad, which comprises the steps of:
(1) deionized water and nickelic positive electrode are added in a reservoir, stirs evenly, obtains suspension；
(2) metal soluble salt is slowly added into step (1) described suspension, is stirred evenly, is filtered by vacuum, dehydrated alcohol punching
It washes, drains, oven drying obtains dried material；
(3) step (2) described dried material is placed in saggar, carries out high temperature sintering under the Muffle furnace oxygen atmosphere of preheating,
It is cooling, it is crushed, sieving obtains the nickelic positive electrode with uniform clad；
In the step (1), the molecular formula of the nickelic positive electrode is LiNixMyO2, wherein 0.5≤x <, 1,0 < y < 0.5,
X+y=1, the M are any one or a few in Co, Mn, Al, Ti, Mg；
In the step (2), the metal soluble salt is metal halide, metal nitrate, any one in metal sulfate
Kind is several；Metallic element in the metal soluble salt is Al, Zr, Mg, Ti, Mn, Ni, Sn, Co, Zn, Ca, Sr, Ba, Y,
V, one or more of Nb, Ce and La.
2. a kind of preparation method of the nickelic positive electrode with uniform clad as described in claim 1, which is characterized in that
In the step (1), by mass, the additional amount of the deionized water: the additional amount of the nickelic positive electrode is 0.5~5:
1。
3. a kind of preparation method of the nickelic positive electrode with uniform clad as described in claim 1, which is characterized in that
In the step (2), by molar amount, the additional amount of the metal soluble salt: the additional amount of the nickelic positive electrode is
0.001~0.05.
4. a kind of preparation method of the nickelic positive electrode with uniform clad as described in claim 1, which is characterized in that
In the step (2), the metal soluble salt is CoCl2、MgCl2·6H2O、Al(NO3)3·9H2O、ZnCl2、NbCl5In appoint
It anticipates one kind.
5. a kind of preparation method of the nickelic positive electrode with uniform clad as described in claim 1, which is characterized in that
In the step (1) and the step (2), the speed of the stirring is 100~1000r/min, the time of the stirring is 5~
30min。
6. a kind of preparation method of the nickelic positive electrode with uniform clad as described in claim 1, which is characterized in that
In the step (2), the temperature of the oven drying is 80~200 DEG C, and the time of the oven drying is 1~10h.
7. a kind of preparation method of the nickelic positive electrode with uniform clad as described in claim 1, which is characterized in that
In the step (3), concentration >=80% of the oxygen.
8. a kind of preparation method of the nickelic positive electrode with uniform clad as described in claim 1, which is characterized in that
In the step (3), the temperature of the sintering is 300~900 DEG C, and the time of the sintering is 4~15h.
9. a kind of preparation method of the nickelic positive electrode with uniform clad as claimed in claim 8, which is characterized in that
In the step (3), the temperature of the sintering is 700 DEG C, and the time of the sintering is 10h.
10. a kind of nickelic positive electrode with uniform clad, which is characterized in that using as claim 1~9 any one
The preparation method is prepared.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707363A (en) * | 2019-08-28 | 2020-01-17 | 惠州锂威新能源科技有限公司 | Method for improving liquid retention capacity of soft-packaged battery cell |
| CN111244426A (en) * | 2020-01-20 | 2020-06-05 | 新奥石墨烯技术有限公司 | Nickel-rich ternary cathode material, preparation method and lithium ion battery |
| CN111987318A (en) * | 2020-09-28 | 2020-11-24 | 海南尚合超电新能源科技有限公司 | Preparation method of nickel-cobalt-based oxide coated ternary lithium ion positive electrode material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359733A (en) * | 2007-07-31 | 2009-02-04 | 比亚迪股份有限公司 | Method for coating positive pole active substance of lithium ionic secondary battery |
| CN105070907A (en) * | 2015-08-31 | 2015-11-18 | 宁波金和锂电材料有限公司 | High nickel anode material, preparation method thereof and lithium ion battery |
-
2019
- 2019-03-29 CN CN201910249675.2A patent/CN109950497A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359733A (en) * | 2007-07-31 | 2009-02-04 | 比亚迪股份有限公司 | Method for coating positive pole active substance of lithium ionic secondary battery |
| CN105070907A (en) * | 2015-08-31 | 2015-11-18 | 宁波金和锂电材料有限公司 | High nickel anode material, preparation method thereof and lithium ion battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707363A (en) * | 2019-08-28 | 2020-01-17 | 惠州锂威新能源科技有限公司 | Method for improving liquid retention capacity of soft-packaged battery cell |
| CN111244426A (en) * | 2020-01-20 | 2020-06-05 | 新奥石墨烯技术有限公司 | Nickel-rich ternary cathode material, preparation method and lithium ion battery |
| CN111987318A (en) * | 2020-09-28 | 2020-11-24 | 海南尚合超电新能源科技有限公司 | Preparation method of nickel-cobalt-based oxide coated ternary lithium ion positive electrode material |
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Address after: Jia Ling Road 315400 Yuyao City, Zhejiang province Ningbo City No. 39 Applicant after: Ningbo new energy Polytron Technologies Inc Address before: 315400 Cao'e Village, Xiaocao'e Town, Yuyao City, Ningbo City, Zhejiang Province Applicant before: Ningbo new energy Polytron Technologies Inc |
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Application publication date: 20190628 |