CN101609893A - Lithium ion secondary battery anode material and preparation method thereof - Google Patents

Lithium ion secondary battery anode material and preparation method thereof Download PDF

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Publication number
CN101609893A
CN101609893A CNA2008101150443A CN200810115044A CN101609893A CN 101609893 A CN101609893 A CN 101609893A CN A2008101150443 A CNA2008101150443 A CN A2008101150443A CN 200810115044 A CN200810115044 A CN 200810115044A CN 101609893 A CN101609893 A CN 101609893A
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lithium
compound
positive electrode
rechargeable battery
cobalt
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侯宪全
江卫军
其鲁
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CITIC Guoan Mengguli New Energy Technology Co Ltd
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CITIC Guoan Mengguli New Energy Technology Co Ltd
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    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The invention provides a kind of positive electrode that is used for lithium rechargeable battery and preparation method thereof, this positive electrode is the lithium nickel cobalt dioxide material that is doped with boron element; Its preparation method comprises: at first, will contain the mixture that mixture that the compound of nickel, cobalt and lithium or multiple compound form and the compound of compound that contains boron or multiple boracic form and be mixed in proportion; Then, in air atmosphere in 300-600 ℃ of following preliminary treatment 1-10 hour; Then, under 700-850 ℃, high temperature synthesized 3-15 hour in oxygen atmosphere; At last, be cooled to room temperature, pulverize, sieve, promptly obtain the lithium nickel cobalt dioxide material of doped with boron element; Specific capacity height of the present invention, good cycle, fail safe is good, and the material well-crystallized, and the surface coats evenly, narrow particle size distribution, bulk density is big, thereby has good electrochemical, and its preparation method production technology is simple, and step is few, energy consumption is low, and is pollution-free, and zero discharge is fit to suitability for industrialized production.

Description

Lithium ion secondary battery anode material and preparation method thereof
Technical field
The present invention relates to technical field of lithium ion secondary, particularly have high lithium ion secondary battery positive electrode and preparation method thereof.
Background technology
Since Sony Corporation's lithium ion battery that sour lithium is done anodal making with cobalt in 1991 is put on market, have advantages such as higher output voltage, bigger energy density, the cycle life of growing and memory-less effect because of it, lithium rechargeable battery occupies more and more important position in daily life, be used widely in fields such as mobile communication, notebook computer, electric vehicle, Aero-Space, biological medicines.Along with progress of science and technology, new positive electrode is also constantly released, and present commercial lithium ion secondary battery anode material mainly is stratiform cobalt acid lithium, stratiform lithium nickelate and spinel lithium manganate.Though cobalt acid lithium is the used positive electrode of first generation lithium rechargeable battery, application technology is also ripe, has deficiencies such as cobalt resource shortage, cobalt toxicity are big, is restricting its utilization that further develops; Although the stratiform lithium nickelate has advantages such as cost of material is lower, and environmental pollution is less because the unusual difficulty of the product of preparation stoichiometric proportion, and material exists drawbacks limit such as cycle performance is poor, poor high temperature stability, poor stability its commercial applications.The spinel lithium manganese oxide anode material aboundresources, cost is low, environmental protection, but and high current charge-discharge, but in use still exist manganese in electrolyte dissolving and in the deep discharge process structure unfavorable factors such as Jahn-Teller non-reversible deformation take place, cause its high-temperature behavior poor, capacity attenuation is very fast.Therefore, the research of seeking novel substitution material or improving the chemical property of current material becomes the research focus of lithium ion secondary battery anode material.
At present, the lithium ion battery future thrust mainly is the raising of battery capacity and prolongation and the cost and the safety issue of cycle life.Substitute part of nickel element formation lithium nickel cobalt dioxide LiNi by mixing cobalt element in the lithium nickelate 1-mCo mO 2, wherein 0.1＜m＜0.3 both can make the synthetic of material become easier, also can reduce simple use cobalt acid lithium pollution on the environment, had the advantage of cobalt acid lithium and lithium nickelate simultaneously concurrently, was very promising positive electrode.But in actual application, the doping of cobalt is little to the thermodynamic stability effect of material.And at charging later stage, Ni in the positive electrode 4+, Co 4+Oxidizability very strong, be easy between the electrolyte to produce pernicious interaction, cause the cycle performance rapid deterioration of material.Simultaneously, positive electrode itself is also unstable, at a certain temperature decomposition reaction can take place, and causes structural collapse, and the chemical property of material worsens.In recent years, the scientific research personnel found can improve stability and the surface property of material in charge and discharge process by doping with surperficial coating, thereby had optimized its chemical property by making unremitting efforts effort.
Chinese patent application number 03124282.0 has been announced " low temperature combustion synthesis method of doping lithium nickelate ", though this synthetic method equipment is simple, easy to operate, synthetic material specific capacity height, but what utilize all is nitrate and organic dyestuff, can produce a large amount of NO in building-up process 2And CO 2Waste gas pollutes environment, runs counter to strategy of sustainable development policy.Chinese patent application numbers 2000510088044.5 has been announced and " spherical doping lithium nickelate melt salt parcel synthetic method " has been adopted the nitrate of lapping to do melt, it evenly applied then.Though the synthetic material particle size of this technology is even, specific capacity is higher, and NO is also arranged in the building-up process 2Toxic emission, contaminated environment, material building-up process heat treatment step is more simultaneously, increases energy consumption.Number of patent application 200510019552.8 has been announced " doping and surface coated lithium nickel cobalt dioxide and preparation method thereof ", utilize traditional solid phase reaction synthesizing blender and surface coated lithium nickel cobalt dioxide positive electrode, though process is simple, but the uniformity of the defective of traditional solid phase reaction such as material crystallization, granule-morphology and particle size distribution etc. are difficult to accurate control, and need three heat tracings, increased production cost.
In a word, still there are various defectives in the positive electrode of lithium rechargeable battery in the prior art, and people are still in that to attempt to seek a kind of chemical property good, the positive electrode that production technology is simple, energy consumption is low, free of contamination.
Summary of the invention
Therefore, task of the present invention is the defective that overcomes prior art, thereby a kind of positive electrode of lithium rechargeable battery is provided.
Another task of the present invention provides a kind of preparation method of lithium ion secondary battery anode material.
Another purpose of the present invention provides a kind of lithium rechargeable battery.
On the one hand, the invention provides a kind of positive electrode of lithium rechargeable battery, described positive electrode is the lithium nickel cobalt dioxide material that is doped with boron element.
In the above-mentioned material, the lithium nickel cobalt dioxide materials chemistry formula of described doped with boron element is LiNi xCo yB zO 2, wherein, 0.7＜x＜0.9,0.1＜y＜0.3,0＜z＜0.1, and x+y+z=1.
On the other hand, the invention provides a kind of method for preparing the positive electrode of lithium rechargeable battery, may further comprise the steps:
A) at first, will contain the mixture that mixture that the compound of nickel, cobalt and lithium or multiple compound form and the compound of compound that contains boron or multiple boracic form is mixed in proportion;
B) then, in air atmosphere in 300-600 ℃ of following preliminary treatment 1-10 hour;
C) then, under 700-850 ℃, high temperature synthesized 3-15 hour in oxygen atmosphere;
D) be cooled to room temperature, pulverize, sieve, promptly obtain the lithium nickel cobalt dioxide material of doped with boron element.
In the said method, also comprise the process pretreated feedstock is ground, and then carry out the synthetic step of high temperature.
In the said method, wherein, in the resulting mixture of step a), each atoms of elements is than being nickel: cobalt: lithium: boron=x: y: 1.03: z, wherein, 0.7＜x＜0.9,0.1＜y＜0.3,0＜z＜0.1, and x+y+z=1.
In the said method, described nickeliferous compound is NiO, Ni (OH) 2, NiOOH, lithium nickel cobalt dioxide or such as Ni xCo 1-xO and Ni xCo 1-x(OH) 2Nickel cobalt oxide.
In the said method, the described compound that contains cobalt is CoO, Co 3O 4, Co (OH) 2Or CoOOH.
In the said method, the described compound that contains lithium is LiOH, LiNO 3Or Li 2CO 3
In the said method, the compound of described boracic is B 2O 3Or H 3BO 3
Another aspect the invention provides a kind of lithium rechargeable battery, and the positive pole of this lithium rechargeable battery is made by above-mentioned positive electrode.
The invention has the advantages that:
(1) the material doped lithium nickelate of lithium ion secondary battery anode has replaced traditional inorganic metal dopant ion with boron, has not only improved the capacity first of material, has improved material discharging efficiency first, and has improved the cycle performance of material greatly.Because traditional inorganic metal ion such as zinc, magnesium etc. do not have electro-chemical activity when mixing, can reduce the specific discharge capacity of material, and in the coating process, can form corresponding oxide, reduce the embedding of lithium ion and taken off the fluency of embedding, thereby also made the electro-chemical activity of material reduce.And the doping of B or coating can form Li 2O2B 2O 3Vitreous structure, it is highly stable, has improved the structural stability of material in charge and discharge process.While Li 2O2B 2O 3Be the good conductor of electronics and lithium ion, can and do not take off embedding and produce and hinder, thereby make material electrochemical performance improve greatly the embedding of lithium ion;
(2) the material doped lithium nickelate specific capacity of lithium ion secondary battery anode height, good cycle, fail safe is good;
(3) preheating of material and regrind make each component fully mix, and help the diffusion in the course of reaction, make material well-crystallized, surface coat evenly, narrow particle size distribution, and bulk density is big, thereby has good electrochemical;
(4) adopt this kind method production technology simple, step is few, and the production time is short, and energy consumption is low, and is pollution-free, and zero discharge is fit to suitability for industrialized production very much.
Description of drawings
Below, describe embodiments of the invention in conjunction with the accompanying drawings in detail, wherein:
Accompanying drawing 1 is ESEM (SEM) figure by the prepared boron doping lithium nickel cobalt dioxide of embodiment 1 and embodiment 2.A figure is the SEM figure of embodiment 1 gained material among the figure, and b figure is the SEM figure of embodiment 2 gained materials.
Accompanying drawing 2 is the x-ray diffraction patterns by the prepared boron doping lithium nickel cobalt dioxide of embodiment 1 and embodiment 2.Curve a is the diffraction curve of embodiment 1 gained material among the figure, and curve b is the diffraction curve of embodiment 2 gained materials.
Accompanying drawing 3 is that curve a is the charging and discharging curve of embodiment 1 gained material among the figure by the first charge-discharge curve chart of the prepared boron doping lithium nickel cobalt dioxide of embodiment 1 and embodiment 2, and curve b is the charging and discharging curve of embodiment 2 gained materials.
Accompanying drawing 4 is the cyclic curve figure by the prepared boron doping lithium nickel cobalt dioxide of embodiment 1 and embodiment 2.Curve a is the cyclic curve of embodiment 1 gained material among the figure, and curve b is the cyclic curve of embodiment 2 gained materials.
Accompanying drawing 5 is the first charge-discharge curves by embodiment 3 gained materials.
Accompanying drawing 6 is the cyclic curves by embodiment 3 gained materials.
Accompanying drawing 7 is the first charge-discharge curves by embodiment 4 gained materials.
Accompanying drawing 8 is the cyclic curves by embodiment 4 gained materials.
Embodiment
Embodiment 1
The main preparation process of present embodiment is:
A) in Li: (Ni+Co): the molar fraction ratio of B is that 1.03: 0.97: 0.03 ratio takes by weighing reaction raw materials LiOHH respectively 2O, Ni 0.8Co 0.2(OH) 2And H 3BO 3, grind and fully mixing;
B) step (a) gained mixture is put into flat crucible, put into and adopt electrically heated cylindrical high temperature furnace to heat, in heating process, utilize air blast in high temperature furnace, to blast air continuously, air pressure keeps 1 standard atmospheric pressure, and constant current heats up, when temperature reaches 500 ℃, insulation is to carry out preliminary treatment, and pretreatment time is 5 hours; Flat crucible is cooled to below 100 ℃ with stove, takes out raw material, put into mortar and grind once more through pre-burning;
C) ground raw material in the step (b) is put into the rotation Muffle furnace, constant current heats up, the while aerating oxygen, and pressure is 1 standard atmospheric pressure.When temperature reached 750 ℃, insulation was synthetic to carry out high temperature, and the time is 8 hours;
D) after reaction was finished, product cooled off with stove.After temperature drops to below 200 ℃, product is taken out, concentrate and pulverize, cross 200 mesh sieves and sieve, obtain the lithium nickel cobalt dioxide positive electrode of boron doping vario-property.
The lithium salts LiOHH that adopts among the above-mentioned preparation method 2O is volatilization easily in the high temperature building-up process, material is formed lack the product of lithium and decreased performance, so generally make it excessive about 3% when the weighing lithium salts, therefore, the product that finally obtains is LiNi 0.776Co 0.194B 0.03O 2, its X-ray diffractogram is shown in the curve a among Fig. 2, and the material structure that each peak shows among the figure is typical α-NaFeO 2Layer structure, and (003) diffraction peak height of products therefrom and point, peak intensity are apparently higher than (104) peak, and (006) and (102), and (108) and the division of (110) pair peaks obviously show the product well-crystallized.
Take the synthetic product of the inventive method for spherical, as shown in Figure 1a, average grain diameter is 8 μ m, and tap density is 2.5g/cm 3, be made into simulated battery after, test its capacity and cycle performance, shown in the curve a among Fig. 3 and Fig. 4, at 3.0V～4.3V, specific discharge capacity is 188.1mAh/g under the 0.5C rate charge-discharge system, and following 50 the circulation back capability retentions of 1C rate charge-discharge system are 96%.
Embodiment 2
The preparation process of present embodiment is identical with embodiment 1, just incites somebody to action Ni wherein 0.8Co 0.2(OH) 2Change LiNi into 0.8Co 0.2O 2, and LiOHH 2The consumption of O changes H into 3BO 3Half of the molal quantity of consumption, resulting boron doped lithium nickel cobalt dioxide material is LiNi 0.776Co 0.194B 0.03O 2, its scanning electron microscope image is shown in Fig. 1 b, and its average grain diameter is substantially the same manner as Example 1, and the X-ray diffractogram of this material is shown in the curve b among Fig. 2.Utilize this positive electrode to make simulated battery and test its capacity and cycle performance, shown in the curve b among Fig. 3 and Fig. 4, at 3.0～4.3V, first discharge specific capacity is 188.8mAh/g under the 0.5C rate charge-discharge system, and capability retention is 93.3% after the 1C multiplying power circulation 50 times.
Embodiment 3
Present embodiment is raw materials used identical with embodiment 1, and remove the Li in the step (1): (Ni+Co): the mol ratio of B changes 1.03: 0.99: 0.01 into; Holding temperature in the step (2) changes 400 ℃ into, and temperature retention time changes 8h into; Holding temperature in the step (4) changes 800 ℃ into, and temperature retention time is 6h, and other steps are identical with embodiment 1, and the positive electrode for preparing at last is LiNi 0.792Co 0.198B 0.01O 2Utilize this positive electrode to make simulated battery, its capacity and cycle performance respectively as shown in Figure 5 and Figure 6, at 3.0～4.3V, first discharge specific capacity is 187.5mAh/g under the 0.5C rate charge-discharge system, capability retention is 8 9% after the 1C multiplying power circulation 50 times.
Embodiment 4
Raw material that present embodiment is used and synthetic method are with embodiment 1, and only with the Li in the step (1): (Ni+Co): the mol ratio of B changes 1.03: 0.92: 0.08 into; Holding temperature in the step (2) changes 600 ℃ into, and temperature retention time changes 3h into; Holding temperature in the step (4) changes 700 ℃ into, and temperature retention time is 12h, and the positive electrode that obtains at last is LiNi 0.736Co 0.184B 0.08O 2Utilize simulated battery that this positive electrode makes at 3.0～4.3V, first discharge specific capacity is 186.5mAh/g under the 0.5C rate charge-discharge system, and capability retention is 90.1% after the 1C multiplying power circulation 50 times, as shown in Figure 7 and Figure 8.
Embodiment 5
In the present embodiment, use Ni 0.8Co 0.2OSubstitute Ni 0.8Co 0.2(OH) 2, other raw materials are identical with embodiment 1, and pretreatment temperature is 300 ℃, pretreatment time 10 hours, high temperature synthesis temperature are 850 ℃, generated time 3 hours, other is identical with embodiment 1, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.776Co 0.194B 0.03O 2
Embodiment 6
In the present embodiment, use Ni 0.8Co 0.2OSubstitute Ni 0.8Co 0.2(OH) 2, and pretreatment temperature is 600 ℃, pretreatment time 1 hour, high temperature synthesis temperature are 700 ℃, and generated time 15 hours, other is identical with embodiment 1, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.776Co 0.194B 0.03O 2
Embodiment 7
In the present embodiment, be 1.03: 0.72: 0.22 in the molar fraction ratio of Li: Ni: Co: B: 0.06 ratio takes by weighing reaction raw materials LiOHH respectively 2O, Ni (OH) 2, Co 3O 4And H 3BO 3, pretreatment temperature is 500 ℃, pretreatment time 5 hours, high temperature synthesis temperature are 800 ℃, and generated time 8 hours, other are identical with embodiment 1, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.72Co 0.22B 0.06O 2
Embodiment 8
In the present embodiment, be 1.03: 0.71: 0.20 in the molar fraction ratio of Li: Ni: Co: B: 0.09 ratio takes by weighing reaction raw materials LiOHH respectively 2O, Ni (OH) 2, Co 3O 4And H 3BO 3, other are identical with embodiment 7, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.71Co 0.2B 0.09O 2
Embodiment 9
In the present embodiment, be 1.03: 0.71: 0.28 in the molar fraction ratio of Li: Ni: Co: B: 0.01 ratio takes by weighing reaction raw materials LiOHH respectively 2O, Ni (OH) 2, Co 3O 4And H 3BO 3, other are identical with embodiment 7, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.71Co 0.28B 0.01O 2
Embodiment 10
In the present embodiment, be 1.03: 0.88: 0.11 in the molar fraction ratio of Li: Ni: Co: B: 0.01 ratio takes by weighing reaction raw materials LiOHH respectively 2O, Ni (OH) 2, Co 3O 4And H 3BO 3, other are identical with embodiment 7, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.88Co 0.11B 0.01O 2
Embodiment 11
In the present embodiment, be 1.03: 0.88: 0.11 in the molar fraction ratio of Li: Ni: Co: B: 0.01 ratio takes by weighing reaction raw materials LiNO respectively 3, NiO, CoO and B 2O 3, other are identical with embodiment 7, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.88Co 0.11B 0.01O 2
Embodiment 12
In the present embodiment, be 1.03: 0.88: 0.11 in the molar fraction ratio of Li: Ni: Co: B: 0.01 ratio takes by weighing reaction raw materials Li respectively 2CO 3, NiOOH, CoOOH and H 3BO 3, other are identical with embodiment 7, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.88Co 0.11B 0.01O 2
Embodiment 13
In the present embodiment, be 1.03: 0.88: 0.11 in the molar fraction ratio of Li: Ni: Co: B: 0.01 ratio takes by weighing reaction raw materials Li respectively 2CO 3, NiOOH, Co (OH) 2And H 3BO 3, other are identical with embodiment 7, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.88Co 0.11B 0.01O 2
Embodiment 14
In the present embodiment, in Li: the molar fraction ratio of N i: Co: B is 1.03: 0.88: 0.11: 0.01 ratio takes by weighing reaction raw materials Li respectively 2CO 3, (NiOOH+NiO), Co (OH) 2And H 3BO 3, wherein, mol ratio NiOOH: NiO=1: 1, other are identical with embodiment 7, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.88Co 0.11B 0.01O 2
Embodiment 15
In the present embodiment, be 1.03: 0.88: 0.11 in the molar fraction ratio of Li: Ni: Co: B: 0.01 ratio takes by weighing reaction raw materials (LiOH+LiNO respectively 3+ Li 2CO 3), NiOOH, Co (OH) 2And H 3BO 3, wherein, mol ratio LiOH: LiNO 3: Li 2CO 3=1: 1: 1, other were identical with embodiment 7, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.88Co 0.11B 0.01O 2
Embodiment 16
In the present embodiment, be 1.03: 0.88: 0.11 in the molar fraction ratio of Li: Ni: Co: B: 0.01 ratio takes by weighing reaction raw materials LiOH, NiOOH, (CoO+Co respectively 3O 4+ Co (OH) 2+ CoOOH) and H 3BO 3, wherein, mol ratio CoO: Co 3O 4: Co (OH) 2: CoOOH=1: 1: 1: 1, other were identical with embodiment 7, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.88Co 0.11B 0.01O 2
Embodiment 17
In the present embodiment, be 1.03: 0.88: 0.11 in the molar fraction ratio of Li: Ni: Co: B: 0.01 ratio takes by weighing reaction raw materials (LiOH+LiNO respectively 3+ Li 2CO 3), (NiOOH+NiO), (CoO+Co 3O 4+ Co (OH) 2+ CoOOH) and (B 2O 3+ H 3BO 3), wherein, mol ratio CoO: Co 3O 4: Co (OH) 2: CoOOH=1: 1: 1: 1, LiOH: LiNO 3: Li 2CO 3=1: 1: 1, NiOOH: NiO=1: 1, and B 2O 3: H 3BO 3=1: 1, other are identical with embodiment 7, can obtain the lithium ion secondary battery anode material LiNi of capacity and cycle performance excellence equally 0.88Co 0.11B 0.01O 2
It should be noted that at last, more than each embodiment only in order to method for preparing anode material that is used for lithium rechargeable battery of the present invention and corresponding lithium rechargeable battery to be described, but it is unrestricted, for example, in the last screening step, obviously the order number of screening can be selected according to the actual needs, and the scope of general order number is 150～250 orders, is not limited in 200 orders.Although the present invention is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.

Claims (10)

1. a positive electrode that is used for lithium rechargeable battery is characterized in that, described positive electrode is the lithium nickel cobalt dioxide material that is doped with boron element.
2. the positive electrode that is used for lithium rechargeable battery according to claim 1 is characterized in that, the described lithium nickel cobalt dioxide materials chemistry formula that is doped with boron element is LiNi xCo yB zO 2, wherein, 0.7＜x＜0.9,0.1＜y＜0.3,0＜z＜0.1, and x+y+z=1.
3. method for preparing the positive electrode of lithium rechargeable battery may further comprise the steps:
A) at first, will contain the compound of nickel, cobalt and lithium or be mixed in proportion by the compound of multiple nickeliferous, cobalt and lithium mixture of forming and the mixture that contains the compound of boron or form by the compound of multiple boracic;
B) then, in air atmosphere in 300-600 ℃ of following preliminary treatment 1-10 hour;
C) then, under 700-850 ℃, high temperature synthesized 3-15 hour in oxygen atmosphere;
D) last, be cooled to room temperature, pulverize, sieve, promptly obtain the lithium nickel cobalt dioxide material of doped with boron element.
4. method according to claim 3 is characterized in that, also comprises the process pretreated feedstock is ground, and then carry out the synthetic step of high temperature.
5. method according to claim 3 is characterized in that, in the resulting mixture of step a), each atoms of elements is than being nickel: cobalt: lithium: boron=x: y: 1.03: z, wherein, 0.7＜x＜0.9,0.1＜y＜0.3,0＜z＜0.1, and x+y+z=1.
6. method according to claim 3 is characterized in that, described nickeliferous compound is NiO, Ni (OH) 2, NiOOH, Ni xCo 1-xO, Ni xCo 1-x(OH) 2Or lithium nickel cobalt dioxide.
7. method according to claim 3 is characterized in that, the described compound that contains cobalt is CoO, Co 3O 4, Co (OH) 2Or CoOOH.
8. method according to claim 3 is characterized in that, the described compound that contains lithium is LiOH, LiNO 3Or Li 2CO 3
9. method according to claim 3 is characterized in that, the compound of described boracic is B 2O 3Or H 3BO 3
10. a lithium rechargeable battery is characterized in that, the positive pole of this lithium rechargeable battery is made by the described positive electrode of claim 1.
CNA2008101150443A 2008-06-16 2008-06-16 Lithium ion secondary battery anode material and preparation method thereof Withdrawn CN101609893A (en)

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CN102050498A (en) * 2010-07-22 2011-05-11 中信国安盟固利动力科技有限公司 Boron-doped lithium nickel cobaltate anode material
CN102237524A (en) * 2010-04-29 2011-11-09 深圳市比克电池有限公司 Surface coated lithium cobaltate, preparation method thereof and lithium ion battery
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CN108336331A (en) * 2017-01-17 2018-07-27 三星电子株式会社 Electrode active material, the lithium secondary battery comprising the electrode active material and the method for preparing the electrode active material
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CN110518209A (en) * 2019-08-27 2019-11-29 广东风华新能源股份有限公司 Method for preparing anode material and the positive electrode of preparation
CN112614988A (en) * 2020-12-15 2021-04-06 蜂巢能源科技有限公司 Positive electrode material and preparation method and application thereof
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CN102237524A (en) * 2010-04-29 2011-11-09 深圳市比克电池有限公司 Surface coated lithium cobaltate, preparation method thereof and lithium ion battery
CN102237524B (en) * 2010-04-29 2015-11-25 深圳市比克电池有限公司 The acid of Surface coating cobalt lithium, preparation method and lithium ion battery
CN102050498A (en) * 2010-07-22 2011-05-11 中信国安盟固利动力科技有限公司 Boron-doped lithium nickel cobaltate anode material
CN103118985A (en) * 2010-09-21 2013-05-22 巴斯夫欧洲公司 Process for preparing modified transition metal mixed oxides
CN103118985B (en) * 2010-09-21 2015-01-21 巴斯夫欧洲公司 Process for preparing modified transition metal mixed oxides
CN105118991A (en) * 2015-08-27 2015-12-02 北大先行科技产业有限公司 Lithium ion secondary battery positive electrode material and preparation method thereof
CN105118991B (en) * 2015-08-27 2017-06-16 北大先行科技产业有限公司 A kind of lithium ion secondary battery anode material and preparation method thereof
CN107305946A (en) * 2016-04-19 2017-10-31 株式会社Lg化学 Composite transition metal oxide system precursor, its manufacture method and anode active material
CN108336331A (en) * 2017-01-17 2018-07-27 三星电子株式会社 Electrode active material, the lithium secondary battery comprising the electrode active material and the method for preparing the electrode active material
CN110010903A (en) * 2018-06-29 2019-07-12 宁德时代新能源科技股份有限公司 Positive pole piece and battery
CN110010903B (en) * 2018-06-29 2020-07-17 宁德时代新能源科技股份有限公司 Positive pole piece and battery
CN110518209A (en) * 2019-08-27 2019-11-29 广东风华新能源股份有限公司 Method for preparing anode material and the positive electrode of preparation
CN110518209B (en) * 2019-08-27 2022-04-22 广东风华新能源股份有限公司 Preparation method of anode material and prepared anode material
CN112614988A (en) * 2020-12-15 2021-04-06 蜂巢能源科技有限公司 Positive electrode material and preparation method and application thereof
CN112614988B (en) * 2020-12-15 2021-10-19 蜂巢能源科技有限公司 Positive electrode material and preparation method and application thereof
CN113113578A (en) * 2021-03-10 2021-07-13 欣旺达电动汽车电池有限公司 Cathode material, preparation method thereof and lithium ion battery
CN113113578B (en) * 2021-03-10 2023-01-13 欣旺达电动汽车电池有限公司 Cathode material, preparation method thereof and lithium ion battery

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