CN107230773A - Positive electrode for lithium battery and preparation method thereof, lithium battery anode and lithium battery - Google Patents
Positive electrode for lithium battery and preparation method thereof, lithium battery anode and lithium battery Download PDFInfo
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- CN107230773A CN107230773A CN201710315261.6A CN201710315261A CN107230773A CN 107230773 A CN107230773 A CN 107230773A CN 201710315261 A CN201710315261 A CN 201710315261A CN 107230773 A CN107230773 A CN 107230773A
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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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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- 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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- 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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- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a kind of for positive electrode of lithium battery and preparation method thereof, lithium battery anode and lithium battery, by formula LiNi0.5‑xGa2xMn1.5‑xO4In the anode for lithium battery material of expression, formula, 0 ＜ 2x≤0.4.The present invention also provides a kind of preparation method of above-mentioned positive electrode, the lithium battery anode and lithium battery prepared using above-mentioned positive electrode.Positive electrode cost that the present invention is provided is relatively low, the feature of environmental protection is preferable, purity is high and with good high temperature and heavy current cycle characteristic.
Description
Technical field
It is more particularly to a kind of for positive electrode of lithium battery and preparation method thereof, lithium electricity the present invention relates to field of batteries
Pond positive pole and lithium battery.
Background technology
Currently, the mankind are faced with the double challenge that resource estimation and living environment deteriorate.Therefore, countries in the world are exerted
Power researches and develops new material, promotes the new concept of low-carbon life, promotes human society by current high energy consumption, high consumption life producer
Formula turns to energy-saving, recyclable sustainable development mode.Specially widely popularize the application of clean energy resource, such as solar energy, wind
Can power field application, and using hybrid vehicle or pure electric automobile replace traditional vapour current using gasoline
Car.
The application of clean energy resource and novel steam be unable to do without medium-and-large-sized energy-storage battery and electrokinetic cell.In numerous energy-storage batteries
In electrokinetic cell, lithium rechargeable battery is due to higher energy density and longer service life, gradually taking
For traditional ni-mh/NI-G secondary cell, it possesses huge in emerging fields such as new-energy automobile, wind-powered electricity generation energy storage and solar energy storages
Great development prospect.
Lithium rechargeable battery includes positive pole, negative pole, the barrier film and electrolyte being arranged between positive pole and negative pole.Wherein,
Positive pole includes matrix and the coating material being coated on the matrix, and coating material includes positive electrode (positive active material), led
Electric material and binding agent.Wherein, positive electrode is the key raw material of lithium rechargeable battery, because positive electrode is in lithium ion
Occupy larger weight ratio in secondary cell, therefore positive electrode performance determines build, security and the electric property of battery.
The positive electrode used in current lithium battery is mostly LiCoO2, also part LiFePO4、LiMn2O4And LiNi1- xCoxO2。
Cobalt acid lithium has higher specific capacity and preferable cycle characteristics.But, due to abundance of the cobalt element in the earth's crust
It is low, belong to scarcity metals, therefore it is expensive, thus also cause the cost of such a material higher.In addition, cobalt element also has necessarily
Toxicity, after the battery prepared by cobalt acid lithium is discarded, the harm to environment is larger.Accordingly, it is desirable to provide a kind of price is more low
The preferable positive electrode of honest and clean and environmental-protecting performance.
LiFePO4With Stability Analysis of Structures, raw material is cheap, and cyclicity and security are preferable, the advantages of smaller to environmental pressure,
But there is also synthesis cost is higher, the problems such as energy density is relatively low.
Spinel lithium manganate LiMn2O4It is also current the advantages of environmentally friendly with security is good, multiplying power property is good, price is low
A kind of main flow positive electrode, but its energy density is relatively low, and cycle performance is poor with high-temperature behavior, it is difficult to meet large-sized power lithium
The requirement of ion battery and energy-storage battery.
LiNi0.5Mn1.5O4Have safe, multiplying power property good with the same crystal structure of LiMn2O4, therefore also
Advantage.Its operating voltage of what is more important is 4.7V, higher than LiMn2O4, therefore with higher power density.But
There are some shortcomings, such as be difficult to prepare high-purity sample, the problems such as high temperature and heavy current cycle characteristic need to improve.
In view of based on it is above-mentioned some, the present invention consider have selected in positive electrode use Gallium elements, thus prepare into
This relatively low, feature of environmental protection is preferable, purity is high and positive electrode with good high temperature and heavy current cycle characteristic.
The content of the invention
In view of the shortcomings of the prior art, present invention solves the technical problem that being to provide a kind of positive pole material for lithium battery
Material and preparation method thereof, the positive electrode cost of preparation that the present invention is provided is relatively low, the feature of environmental protection is preferable, purity is high and with good
Good high temperature and heavy current cycle characteristic.
In order to solve the above technical problems, the technical proposal of the invention is realized in this way：A kind of positive pole for lithium battery
Material, especially, the positive electrode is by formula LiNi0.5-xGa2xMn1.5-xO4Represent, in the formula, 0 ＜ 2x≤0.4.
It is preferred that, in above-mentioned positive electrode, in the formula, 0.1≤2x≤0.2.
It is preferred that, in above-mentioned positive electrode, in the formula, 2x values 0.1 or 0.15.
Correspondingly, the present invention also provides a kind of preparation method of above-mentioned positive electrode, comprises the following steps：
A), using li quid mixing method, lithium source, manganese source, nickel source and gallium source compound is mixed in proportion, mixed
Solution；
B) spray drying treatment, is carried out to the mixed solution, presoma is obtained；
C), the presoma is heat-treated, positive electrode is obtained；
It is preferred that, in the preparation method of above-mentioned positive electrode, the mol ratio of nickel, gallium and manganese is 0.4- in the step a)
0.475:0.05-0.2:1.4-1.475。
It is preferred that, in the preparation method of above-mentioned positive electrode, nickel gallium Mn oxide precursor and lithium in the step d)
The mol ratio of source compound is 0.9-1:1-1.1.
It is preferred that, in the preparation method of above-mentioned positive electrode, the temperature of heat treatment is 700-1000 in the step c)
℃。
It is preferred that, in the preparation method of above-mentioned positive electrode, the time of heat treatment is 10~48h in the step c).
It is preferred that, in the preparation method of above-mentioned positive electrode, the manganese source compound is manganese acetate, the nickel source chemical combination
Thing is nickel acetate, and the gallium source compound is gallium nitrate, and the Li source compound is lithium hydroxide.
The present invention also provides a kind of lithium battery anode, including matrix and the coating material for being placed in matrix surface, the coating
Material includes positive electrode described above, conductive material and binding agent.
The present invention also provides a kind of lithium battery, including：Lithium battery anode described above, negative pole, it is arranged on positive pole and negative
Barrier film and electrolyte between pole
The positive electrode obtained using preparation method of the present invention, is possessed higher purity and good high temperature and high current is followed
Ring property, simultaneously as employing gallium element, cost is relatively low, good environmental protection.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the preparation method flow chart of positive electrode in the specific embodiment of the invention；
The XRD spectrum for the positive electrode that Fig. 2 is 1-3 of the embodiment of the present invention and comparative example 1 is obtained；
Fig. 3 is experimental cell made by the positive electrode prepared as embodiment 1-3 and comparative example 1 in room temperature low current
Under cycle characteristics curve；
Fig. 4 is experimental cell made by the positive electrode prepared as embodiment 1-3 and comparative example 1 in high temperature high current
Under cycle characteristics curve.
Embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, still
It should be appreciated that these descriptions are simply to further illustrate the features and advantages of the present invention, rather than to the claims in the present invention
Limitation.
The embodiment of the invention discloses a kind of positive electrode for lithium battery, with formula LiNi0.5-xGa2xMn1.5-xO4
Structure, 0 ＜ 2x≤0.4 in formula.It is preferred that, 0.1≤2x≤0.2.It is furthermore preferred that 2x values are 0.1 or 0.15.
The positive electrode is to prepare energy storage device, including lithium primary battery and lithium rechargeable battery.
The positive electrode has spinel structure and 4.7 volts of working voltage platforms.
The positive electrode that the present invention is provided is using price more cheap manganese, lithium, nickel and gallium as raw material, therefore cost is relatively low.
The positive electrode that the present invention is provided uses gallium element, can improve diffusion velocity of the lithium ion in crystal, so that
The high temperature and heavy current cycle characteristic of above-mentioned positive electrode can be improved.
The present invention also provides a kind of preparation method of above-mentioned positive electrode, comprises the following steps：
A), using li quid mixing method, lithium source, manganese source, nickel source and gallium source compound is mixed in proportion, mixed
Solution；
B) spray drying treatment, is carried out to the mixed solution, presoma is obtained；
C), the presoma is heat-treated, positive electrode is obtained；
In the above-mentioned preparation method that the present invention is provided, step a), step b) prepare nickel gallium manganese oxidate for lithium precursor
Process.In order that each raw material is sufficiently mixed uniformly, the present invention uses li quid mixing method first, by lithium source, manganese source, nickel source and gallium source
Compound is mixed in proportion, so that each element is mixed on a molecular scale, it is ensured that the high-purity of product.
The mode mixed for liquid phase, the present invention is preferably using deionized water as solvent, with water-soluble gallium source compound, water-soluble
Property nickel source compound and water-soluble manganese source compound be raw material, above-mentioned raw materials are soluble in water, obtain mixed solution.It is preferred that,
In above-mentioned raw materials, the mol ratio of nickel, gallium and manganese is 0.4-0.475:0.05-0.2:1.4-1.475.
Li source compound is preferred to use lithium acetate, lithium nitrate, lithium hydroxide or lithium carbonate；Water-soluble nickel source compound is preferred
Using nickel acetate, nickel nitrate, nickel chloride or nickel sulfate；Water-soluble manganese source compound is preferred to use manganese acetate, manganese nitrate, manganese chloride
Or manganese sulfate, water-soluble gallium source compound is preferred to use gallium nitrate.
The mixed solution containing nickel gallium Mn oxide precursor is obtained after liquid phase mixing, using spray drying to mixed solution
Handled and just obtain precursor powder.
Spray drying is the method for drying the liquid material of atomisation in hothouse thermal current.Mixed solution is entered
The powder obtained after row spray drying treatment has higher degree, and relative to traditional solution crystal process, spray drying process need not
The post processing, simplified operating process such as washed, dried to product again.Also, the drying process for drying method of spraying is very fast
Speed, is suitable for the production of commercial quantities metaplasia.The present invention can be using air-blast atomization seasoning, pressure type atomization drying method or rotary
Atomization drying method, there is no particular restriction to this by the present invention.
Obtained precursor powder is heat-treated according to the method described above, obtains lithium nickel gallium Mn oxide precursor.At heat
The temperature of reason is preferably 700-1000 DEG C, and heat treatment time is preferably 10-48 hours.It is highly preferred that the temperature of heat treatment is 900
DEG C, heat treatment time is preferably 20 hours.
The present invention also provides a kind of lithium battery anode, including matrix and is placed in the coating material of matrix surface, wherein coating
Material includes：Above-mentioned positive electrode, conductive material and bonding agent.
Matrix can use material well known to those skilled in the art, such as aluminium foil in above-mentioned positive pole.It is conductive in coating material
Material is preferably conductive black super P, and bonding agent can be polytetrafluoroethylene (PTFE), polyvinylidene chloride, polyvinyl chloride, poly- methyl
Methyl acrylate or butadiene-styrene rubber.
The anode that the present invention is provided can be adopted and prepared with the following method：
1-METHYLPYRROLIDONE (NMP) is dissolved in after above-mentioned positive electrode, conductive material, binding agent are mixed and is pressed in base
Positive plate is made on body.
Accordingly, the present invention also provides a kind of lithium battery, it includes above-mentioned positive pole, negative pole, be arranged on positive pole and negative pole it
Between barrier film and electrolyte.
The positive pole and lithium battery that the present invention is provided are preferred to use above-mentioned positive electrode, due to above-mentioned positive electrode raw material compared with
To be cheap and be difficult to pollute environment, therefore lithium battery prepared therefrom has relatively low cost and the higher feature of environmental protection.
For a further understanding of the present invention, the positive electrode that is provided with reference to Fig. 1 and embodiment the present invention and its
Preparation method is described.Protection scope of the present invention is not limited by the following examples.
Embodiment 1
1st, with Li：Ni:Ga:Mn mol ratio is 1：0.475:0.05:1.475 weigh lithium hydroxide, nickel acetate, gallium nitrate
And manganese acetate, the mixed solution that deionized water is made into 0.5mol/L is added after mixing；
2nd, mixed solution in step 1 is dried to obtain presoma with spray dryer；
3rd, by the presoma in step 2 in air atmosphere with 900 DEG C of calcining at constant temperature 20h, after natural cooling, obtain product
LiNi0.475Ga0.05Mn1.475O4；
Embodiment 2
1st, with Li：Ni:Ga:Mn mol ratio:1：0.45:0.1:1.45 weigh lithium hydroxide, nickel acetate, gallium nitrate and vinegar
Sour manganese, adds the mixed solution that deionized water is made into 0.5mol/L after mixing；
2nd, the mixed solution in step 1 is dried to obtain presoma with spray dryer；
3rd, by the presoma in step 2 in air atmosphere with 900 DEG C of calcining at constant temperature 20h, after natural cooling, obtain product
LiNi0.45Ga0.1Mn1.45O4；
Embodiment 3
1st, with Li：Ni:Ga:Mn mol ratio:1：0.425:0.15:1.425 weigh lithium hydroxide, nickel acetate, gallium nitrate
And manganese acetate, the mixed solution that deionized water is made into 0.5mol/L is added after mixing；
2nd, mixed solution in step 1 is dried to obtain presoma with spray dryer；
3rd, by the presoma in step 2 in air atmosphere with 900 DEG C of calcining at constant temperature 20h, after natural cooling, obtain product
LiNi0.425Al0.15Mn1.425O4。
As shown in Figure 2, in embodiment 1-3, according to the positive electrode that is obtained of preparation method of the present invention, they
The presence of impurity peaks is not seen in X ray diffracting spectrum, very high purity is shown.
The positive electrode prepared respectively using embodiment 1~3, is made positive plate, and utilize the positive pole as follows
CR2016 type button experimental cells are made in piece：
1st, positive electrode and conductive black super P and binding agent PVDF are pressed 8:1:1 ratio is mixed, and is dissolved in N- methyl
In pyrrolidones (NMP), dry, crush after stirring, be pressed in aluminium net and positive plate is made；
2nd, positive plate made from step 1 is dried into 5h in vacuum drying oven at 130 DEG C, by dried positive plate, gold
Negative pole, polypropylene diaphragm and electrolyte prepared by category lithium piece is assembled in the glove box full of high-purity argon gas, obtains CR2016
Type button experimental cell.
Wherein, supporting electrolyte is LiPF in electrolyte in step 26, solvent is ethylene carbonate (EC) and carbonic acid diethyl
Ester (DEC) is 1 by volume:1 mixes, and the concentration of electrolyte is 1mol/L.
Comparative example
First, the preparation method of positive electrode：
1st, with Li：Ni:Mn mol ratio is 1：0.5:1.5 weigh lithium hydroxide, nickel acetate and manganese acetate, are added after mixing
Deionized water is made into 0.5mol/L mixed solution；
2nd, the mixed solution in step 1 is dried to obtain presoma with spray dryer；
3rd, by the presoma in step 2 in air atmosphere with 900 DEG C of calcining at constant temperature 20h, after natural cooling, product
LiNi0.5Mn1.5O4。
2nd, by above-mentioned positive electrode LiNi0.5Mn1.5O4The method for preparing battery：
1st, by the positive electrode LiNi of above-mentioned preparation0.5Mn1.5O48 are pressed with conductive black super P, binding agent PVDF:1:1
Ratio is mixed, and is dissolved in 1-METHYLPYRROLIDONE (NMP), is dried, is crushed after stirring, is pressed in aluminium net and positive pole is made
Piece；
2nd, obtained positive plate in step 1 is dried into 5h in vacuum drying oven at 130 DEG C, by dried positive plate,
Negative pole, polypropylene diaphragm and the electrolyte prepared with metal lithium sheet is assembled in the glove box full of high-purity argon gas, is obtained
CR2016 type button experimental cells.
Wherein, supporting electrolyte is LiPF in electrolyte in step 26, solvent is ethylene carbonate (EC) and carbonic acid diethyl
Ester (DEC) is 1 by volume:1 mixes, and the concentration of electrolyte is 1mol/L.
Test case 1
Positive electrode by 1~embodiment of embodiment 3 and comparative example preparation is made CR2016 types button experiment electricity
Pond carries out charge-discharge test, wherein, charging and discharging currents are 20 milliamperes every gram (0.1C), and charging/discharging voltage is interval in 3~4.9V, surveys
Examination temperature is room temperature.
Join shown in Fig. 3, although showing relatively stable cycle characteristics as the experimental cell prepared by comparative example, its
Capacity attenuation or obvious.After 50 times circulate, its specific capacity drops to deficiency from every gram initial of 130 Milliampere Hour
120 every gram of Milliampere Hours, capability retention is about 91%.And as implement 2 and the positive electrode for preparing of embodiment 3 made by reality
Electrical verification pond, they are after 50 times circulate, and its specific capacity is respectively 121 and 120 every gram of Milliampere Hours, capability retention difference
For 99.1% and 98.4%, improved significantly than the battery in comparative example.Made by the positive electrode prepared as embodiment 1
Experimental cell, after 50 times circulate, its effect also has corresponding improvement than the battery in comparative example.
Test case 2
CR2016 type button experimental cells are made to positive electrode prepared by embodiment 1- embodiments 3 and comparative example to enter
Row charge-discharge test, wherein, charging current is 20 milliamperes every gram (0.1C), and discharge current is 600 milliamperes every gram (3C), discharge and recharge
Voltage range is in 3~4.9V, and test temperature is 50 DEG C.
Join shown in Fig. 4, the experimental cell obtained by comparative example can not show relatively stable under high temperature high current
Cycle characteristics, its capacity attenuation or obvious.After 50 times circulate, its specific capacity is from 120 initial Milliampere Hours
Every gram drops to less than 60 every gram of Milliampere Hours, and capability retention is about 50%.And the positive pole prepared by embodiment 2 and embodiment 3
Experimental cell made by material, they are after 50 times circulate, and its specific capacity is respectively 114 and 104 every gram of Milliampere Hours,
Capability retention is respectively 93.4% and 92.8%, is improved significantly relative to the battery in comparative example.Prepared by embodiment 1
Positive electrode made by experimental cell, by 50 times circulate after, also have relative to the battery in comparative example and significantly change
It is kind.
In summary, the nickel and manganese in nickel lithium manganate cathode material are replaced using relatively inexpensive, environmentally friendly gallium element, not only
Help to drop to the cost of material, moreover it is possible to effectively improve the cycle characteristics under the high temperature and high current of positive electrode, therefore should
System material is a kind of new high-performance positive electrode.
The explanation of above example is only intended to the method and its core concept for helping to understand the present invention.It should be pointed out that pair
, under the premise without departing from the principles of the invention, can also be to present invention progress for those skilled in the art
Some improvement and modification, these are improved and modification is also fallen into the protection domain of the claims in the present invention.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of positive electrode for lithium battery, it is characterised in that the positive electrode is by formula LiNi0.5-xGa2xMn1.5-xO4
Represent, in the formula, 0 ＜ 2x≤0.4.
2. positive electrode according to claim 1, it is characterised in that in the formula, 0.1≤2x≤0.2.
3. positive electrode according to claim 1, it is characterised in that in the formula, 2x values are 0.1 or 0.15.
4. a kind of preparation method of positive electrode as claimed in claim 1, it is characterised in that positive electrode is by formula
LiNi0.5-xGa2xMn1.5-xO4Represent, in the formula, 0 ＜ 2x≤0.4 comprises the following steps：
A), using li quid mixing method, lithium source, manganese source, nickel source and gallium source compound are mixed in proportion, mixing is obtained molten
Liquid；
B) spray drying treatment, is carried out to the mixed solution, presoma is obtained；
C), the presoma is heat-treated, positive electrode is obtained.
5. the preparation method of positive electrode according to claim 4, it is characterised in that nickel, gallium and manganese in the step a)
Mol ratio be 0.4-0.475:0.05-0.2:1.4-1.475.
6. the preparation method of positive electrode according to claim 4, it is characterised in that nickel Gallium manganese is aoxidized in the step d)
The mol ratio of thing precursor and Li source compound is 0.9-1:1-1.1.
7. the preparation method of positive electrode according to claim 4, it is characterised in that the temperature of heat treatment in the step c)
Spend for 700-1000 DEG C, the time of heat treatment is 10-48h.
8. the preparation method of positive electrode according to claim 4, it is characterised in that the manganese source compound is acetic acid
Manganese, the nickel source compound is nickel acetate, and the gallium source compound is gallium nitrate, and the Li source compound is lithium hydroxide.
9. a kind of lithium battery anode, it is characterised in that including matrix and the coating material for being placed in matrix surface, the coating material
Including positive electrode, conductive material and binding agent, the positive electrode is by formula LiNi0.5-xGa2xMn1.5-xO4Represent, the formula
In, 0 ＜ 2x≤0.4,0.1≤2x≤0.2 or 2x values are 0.1 or 0.15.
10. a kind of lithium battery, it is characterised in that including lithium battery anode, negative pole, set barrier film between a positive electrode and a negative electrode and
Electrolyte, the lithium battery anode includes matrix and is placed in the coating material of matrix surface, and the coating material includes positive pole material
Material, conductive material and binding agent, the positive electrode is by formula LiNi0.5-xGa2xMn1.5-xO4Represent, in the formula, 0 ＜ 2x≤
0.4th, 0.1≤2x≤0.2 or 2x values are 0.1 or 0.15.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111410233A (en) * | 2020-03-02 | 2020-07-14 | 晋江云智新材料科技有限公司 | Lithium manganese gallate serving as positive electrode material of lithium ion battery and preparation method of lithium manganese gallate |
| CN113955805A (en) * | 2021-09-03 | 2022-01-21 | 西安电子科技大学 | Lithium-rich cathode material of lithium ion battery and preparation method thereof |
| CN116779836A (en) * | 2023-08-24 | 2023-09-19 | 深圳海辰储能控制技术有限公司 | Lithium supplementing material, preparation method, positive pole piece, energy storage device and power utilization device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376950A (en) * | 2011-11-28 | 2012-03-14 | 苏州大学 | Positive electrode material for lithium battery and preparing method thereof as well as positive electrode of lithium battery and lithium battery |
| CN102394296A (en) * | 2011-11-28 | 2012-03-28 | 苏州大学 | Anode material for lithium battery and preparation method thereof, and lithium battery anode and lithium battery |
| CN102420320A (en) * | 2011-11-28 | 2012-04-18 | 苏州大学 | Cathode material used for lithium battery and preparation method thereof, positive electrode of lithium battery and lithium battery |
| CN103066271A (en) * | 2013-01-14 | 2013-04-24 | 思伊纳化学科技（北京）有限公司 | High voltage lithium ion battery anode material and preparation method thereof |
-
2017
- 2017-05-05 CN CN201710315261.6A patent/CN107230773A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376950A (en) * | 2011-11-28 | 2012-03-14 | 苏州大学 | Positive electrode material for lithium battery and preparing method thereof as well as positive electrode of lithium battery and lithium battery |
| CN102394296A (en) * | 2011-11-28 | 2012-03-28 | 苏州大学 | Anode material for lithium battery and preparation method thereof, and lithium battery anode and lithium battery |
| CN102420320A (en) * | 2011-11-28 | 2012-04-18 | 苏州大学 | Cathode material used for lithium battery and preparation method thereof, positive electrode of lithium battery and lithium battery |
| CN103066271A (en) * | 2013-01-14 | 2013-04-24 | 思伊纳化学科技（北京）有限公司 | High voltage lithium ion battery anode material and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111410233A (en) * | 2020-03-02 | 2020-07-14 | 晋江云智新材料科技有限公司 | Lithium manganese gallate serving as positive electrode material of lithium ion battery and preparation method of lithium manganese gallate |
| CN113955805A (en) * | 2021-09-03 | 2022-01-21 | 西安电子科技大学 | Lithium-rich cathode material of lithium ion battery and preparation method thereof |
| CN116779836A (en) * | 2023-08-24 | 2023-09-19 | 深圳海辰储能控制技术有限公司 | Lithium supplementing material, preparation method, positive pole piece, energy storage device and power utilization device |
| CN116779836B (en) * | 2023-08-24 | 2024-04-16 | 深圳海辰储能控制技术有限公司 | Lithium supplementing material, preparation method, positive pole piece, energy storage device and power utilization device |
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