CN106450284A - Method for preparing hollow-microsphere lithium manganate positive electrode material with higher electrochemical properties - Google Patents
Method for preparing hollow-microsphere lithium manganate positive electrode material with higher electrochemical properties Download PDFInfo
- Publication number
- CN106450284A CN106450284A CN201611059278.1A CN201611059278A CN106450284A CN 106450284 A CN106450284 A CN 106450284A CN 201611059278 A CN201611059278 A CN 201611059278A CN 106450284 A CN106450284 A CN 106450284A
- Authority
- CN
- China
- Prior art keywords
- lithium
- manganese
- washing
- positive electrode
- hour
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a method for preparing a hollow-microsphere lithium manganate positive electrode material with higher electrochemical properties. The method comprises the following steps: (1) dissolving manganese sulfate monohydrate in deionized water, and dropwisely adding anhydrous ethanol; (2) dissolving ammonium bicarbonate in deionized water; (3) dropwisely adding the solution obtained in the step (2) into the solution obtained in the step (1) by three times to obtain a milk white suspension, stirring, aging, carrying out vacuum filtration on the precipitate, washing and drying to obtain light pink manganese carbonate powder; (4) presintering the manganese carbonate powder, washing with hydrochloric acid 1-3 days, carrying out vacuum filtration, washing and drying to obtain black powder manganese peroxide; and (5) putting a lithium source and the manganese peroxide obtained in the step (4) into a small beaker according to the mole ratio of 1:2, stirring, drying, sintering and cooling to room temperature. The method has the advantages of simple technique, environment friendliness and low cost, and can be used for preparing the hollow lithium manganate positive electrode material with favorable crystallization and uniform distribution; and the electrochemical properties of the material are obviously enhanced.
Description
Technical field
The present invention relates to a kind of prepare the method that special tiny balloon manganate cathode material for lithium improves chemical property.
Background technology
In recent years, the development and application of people's pay attention to day by day new forms of energy new material, to drive various portable electronics with this
The development of product industry and electric automobile industry etc..Because lithium rechargeable battery has, specific energy is high, security is good, the circulation longevity
The advantages of life length and green non-pollution, paid close attention to by numerous researchers.And the research and development of anode material for lithium-ion batteries
It is one of key factor of restriction lithium-ion-power cell development.In numerous positive electrodes, due to manganate cathode material for lithium electricity
Pond has the outstanding advantages, particularly safety collar such as operating voltage height, good cycle, long service life, low cost, safety and environmental protection
Protect, make lithium manganate having spinel structure have the wide market space.
However, lithium manganate having spinel structure has the structural aberration producing because of Jahn-Teller effect, it is led to fill
During electric discharge or storage, capacity attenuation is serious, and high-temperature behavior is not also good.Research finds, has the manganese of special appearance by preparation
Sour lithium, can shorten the diffusion length of lithium ion to a certain extent, reduce polarization, alleviate and produce during lithium ion deintercalation
Volume Changes, thus improving the chemical property of material.Therefore, preparation such as nano wire, nanotube, Nano microsphere, porous knot
Structure, hollow-core construction, zonal structure etc. have obtained widely studied.Result of study shows, the LiMn2O4 with special appearance can be effective
Improve the diffusion coefficient of lithium ion, and rock-steady structure, thus improving chemical property.The present invention passes through preparation by having octahedral
The tiny balloon of the particle composition of body crystalline form, alleviates Volume Changes in hollow-core construction, on the basis of rock-steady structure, forms hollow knot
The octahedra particle of structure has further speeded up the deintercalation reaction of lithium ion, improves its dynamics, to improve electrochemistry with this
Performance.
The present invention prepares LiMn2O4 tiny balloon positive electrode using high temperature solid-state method, to the chemical property of LiMn2O4
Improvement is studied.
Content of the invention
The present invention seeks to shortening lithium ion diffusion length in tiny balloon, alleviate Volume Changes during lithium ion deintercalation
On the basis of, and the octahedra particle with good crystalline form constituting tiny balloon further speeds up the deintercalation reaction of lithium ion,
The LiMn2O4 tiny balloon positive electrode of excellent electrochemical performance is prepared with this.
Concretely comprise the following steps：
（1）0.002-0.1mol manganese sulfate monohydrate is dissolved in 100mL-500mL deionized water, then it is anhydrous to drip 10mL-40mL
Ethanol.
（2）0.02-1mol ammonium hydrogen carbonate is dissolved in 100mL-500mL deionized water.
（3）By step（2）Resulting solution is divided 3 times and is slowly dropped to step（1）In resulting solution, obtain milky and suspend
Liquid, stirs 0.5-1.5 hour with DF-101S type heat-collecting magnetic stirring device at 20 DEG C -40 DEG C, is aged 1-5 hour, obtains light
Pink precipitate, pale pink is precipitated suction filtration, washing, and 30 DEG C～60 DEG C vacuum drying chambers of feeding are dried 8-12 hour and obtain pale pink
Manganese carbonate powder.
（4）By step（3）Obtained pale pink manganese carbonate powder is placed in 200 DEG C -500 DEG C pre-sintered 1-5 in Muffle furnace
Hour, the salt pickling being 0.1 mol/L with concentration after pre-sintering 1-3 days, suction filtration, washing, send into 60 DEG C～120 DEG C vacuum drying
8-12 hour obtains black powder manganese dioxide.
（5）Lithium source in molar ratio:Step（4）Gained manganese dioxide=1:2 weigh lithium source and step（4）Gained manganese dioxide
In small beaker, heating water bath stirring makes it be sufficiently mixed uniformly, is dried, and is placed in 650 DEG C -850 DEG C sintering 10-24 in Muffle furnace
Hour, after naturally cool to room temperature with stove, that is, obtain the hollow manganate cathode material for lithium being made up of octahedra particle.
Described lithium source is one or more of lithium acetate, lithium carbonate and lithium hydroxide.
The present invention utilizes the high temperature solid-state method of technical maturity, prepares presoma manganese by controlling mixing time and digestion time
Source, then by controlling pretreatment temperature and time, finally prepare the LiMn2O4 tiny balloon of well-crystallized, particle size uniformity
Positive electrode.Under room temperature, voltage is 3.0～4.4V, and during 0.5C multiplying power, specific discharge capacity is up to 113mAh/g.After 100 circulations
Specific discharge capacity conservation rate is 83.2% it can be seen that having excellent cyclical stability.In 10C multiplying power, specific discharge capacity according to
So there is 86.3mAh/g.Compared with other metal cations doping route, the present invention can significantly improve the electrochemistry of material
Energy.The positive electrode of the method preparation has broad application prospects in electrical source of power field.The security of this preparation method is good, one-tenth
This cheap, environmentally friendly, excellent electrochemical performance is it is adaptable to industrialized production.
Brief description
Fig. 1 is the XRD spectra of the common LiMn2O4 that obtains of embodiment 1 and LiMn2O4 tiny balloon positive electrode.
Fig. 2 is the SEM design sketch of the common manganate cathode material for lithium that embodiment 1 obtains.
Fig. 3 is the SEM design sketch of the LiMn2O4 tiny balloon positive electrode that embodiment 1 obtains.
Fig. 4 is the first charge-discharge curve of the common LiMn2O4 that obtains of embodiment 1 and LiMn2O4 tiny balloon positive electrode
Figure.
Fig. 5 is the common LiMn2O4 and LiMn2O4 tiny balloon positive electrode cycle performance figure that embodiment 1 obtains.
Fig. 6 is the common LiMn2O4 and LiMn2O4 tiny balloon positive electrode high rate performance figure that embodiment 1 obtains.
Fig. 7 is that the common LiMn2O4 that embodiment 1 obtains is schemed with LiMn2O4 tiny balloon positive electrode EIS.
In figure：The special tiny balloon manganate cathode material for lithium that embodiment 1 obtains is labeled as S-2；Common LiMn2O4 is just
Pole material marking is：S-1.
Specific embodiment
Embodiment 1：
（1）0.0357mol manganese sulfate monohydrate is dissolved in 250mL deionized water, then drips 25mL absolute ethyl alcohol.
（2）0.357mol ammonium hydrogen carbonate is dissolved in 250mL deionized water.
（3）By step（2）Resulting solution is divided 3 times and is slowly dropped to step（1）In resulting solution, obtain milky and suspend
Liquid, is stirred 1 hour at 35 DEG C with DF-101S type heat-collecting magnetic stirring device, is aged 3 hours, obtains pale pink precipitation, will be light
Pink precipitate suction filtration, washing, send into 40 DEG C of vacuum drying chamber dryings and obtain within 8 hours pale pink manganese carbonate powder.
（4）By step（3）Obtained pale pink manganese carbonate powder is placed in Muffle furnace 300 DEG C of pre-sinterings 2 hours, pre-burning
The salt pickling being 0.1 mol/L with concentration after knot 2 days, suction filtration, washing, send into 100 DEG C of vacuum drying and obtain black powder in 12 hours
Last manganese dioxide.
（5）Weigh 0.00345mol lithium hydroxide and 0.00690mol step（4）Gained manganese dioxide in small beaker, water
Bath heating stirring makes it be sufficiently mixed uniformly, is dried, and is placed in Muffle furnace 750 DEG C of sintering 18 hours, after naturally cool to stove
Room temperature, that is, obtain the hollow manganate cathode material for lithium being made up of octahedra particle.
Synthesis LiMn2O4 tiny balloon positive electrode be fabricated to electrode slice, after be assembled into simulated battery.
Concrete operations are as follows：By active material：Acetylene black（C）：PVDF=80：10：10（Mass ratio）Claim in proportion
Amount, is sufficiently stirred for rolling, and adds appropriate NMP, is tuned into the slurry mixing, is rolled into applicator in uniform thickness thin on aluminium foil
Piece, after 80 DEG C of vacuum drying chambers 12 hours, is washed into the circular pole piece of diameter 15mm.With metal lithium sheet as negative pole, with
Celgard2300 microporous polypropylene membrane is barrier film, with 1M LiPF6/EC+DMC+EMC(l:l:L volume ratio) it is electrolyte, in phase
It is less than 5%, oxygen to humidity to force down and be assembled into CR2025 type button cell in 10ppm is full of the glove box of argon gas, then stand
After 10 hours, you can carry out charge-discharge test.Charging voltage 3.0～4.4V, charge-discharge magnification is 0.5C, its specific volume that discharges first
Amount reaches 113mAh/g.After circulation 100 times, discharge capacity is 94mAh/g, and capability retention is 83.2%.
Embodiment 2：
（1）0.0357mol manganese sulfate monohydrate is dissolved in 250mL deionized water, then drips 25mL absolute ethyl alcohol.
（2）0.357mol ammonium hydrogen carbonate is dissolved in 250mL deionized water.
（3）By step（2）Resulting solution is divided 3 times and is slowly dropped to step（1）In resulting solution, obtain milky and suspend
Liquid, is stirred 1 hour at 35 DEG C with DF-101S type heat-collecting magnetic stirring device, is aged 3 hours, obtains pale pink precipitation, will be light
Pink precipitate suction filtration, washing, send into 40 DEG C of vacuum drying chamber dryings and obtain within 8 hours pale pink manganese carbonate powder.
（4）To step（3）Obtained pale pink manganese carbonate powder is placed in Muffle furnace 300 DEG C of pre-sinterings 3 hours, pre-burning
The salt pickling being 0.1 mol/L with concentration after knot 2 days, suction filtration, washing, send into 100 DEG C of vacuum drying and obtain black powder in 12 hours
Last manganese dioxide.
（5）Weigh 0.00316mol lithium hydroxide and 0.00632mol step（4）Gained manganese dioxide in small beaker, water
Bath heating stirring makes it be sufficiently mixed uniformly, is dried, and is placed in Muffle furnace 750 DEG C of sintering 18 hours, after naturally cool to stove
Room temperature, that is, obtain the hollow manganate cathode material for lithium being made up of octahedra particle.
Synthesis LiMn2O4 tiny balloon positive electrode be fabricated to electrode slice, after be assembled into simulated battery.
Concrete operations are as follows：By active material：Acetylene black（C）：PVDF=80：10：10（Mass ratio）Claim in proportion
Amount, is sufficiently stirred for rolling, and adds appropriate NMP, is tuned into the slurry mixing, is rolled into applicator in uniform thickness thin on aluminium foil
Piece, after 80 DEG C of vacuum drying chambers 12 hours, is washed into the circular pole piece of diameter 15mm.With metal lithium sheet as negative pole, with
Celgard2300 microporous polypropylene membrane is barrier film, with 1M LiPF6/EC+DMC+EMC(l:l:L volume ratio) it is electrolyte, in phase
It is less than 5%, oxygen to humidity to force down and be assembled into CR2025 type button cell in 10ppm is full of the glove box of argon gas, then stand
After 10 hours, you can carry out charge-discharge test.Charging voltage 3.0～4.4V, charge-discharge magnification is 0.5C, its specific volume that discharges first
Amount reaches 115.9mAh/g.After circulation 100 times, discharge capacity is 88.8mAh/g, and capability retention is 76.6%.
Claims (1)
1. a kind of method preparing special tiny balloon manganate cathode material for lithium is it is characterised in that concretely comprise the following steps：
（1）0.002-0.1mol manganese sulfate monohydrate is dissolved in 100mL-500mL deionized water, then it is anhydrous to drip 10mL-40mL
Ethanol；
（2）0.02-1mol ammonium hydrogen carbonate is dissolved in 100mL-500mL deionized water；
（3）By step（2）Resulting solution is divided 3 times and is slowly dropped to step（1）In resulting solution, obtain milk-white coloured suspension, use
DF-101S type heat-collecting magnetic stirring device stirs 0.5-1.5 hour at 20 DEG C -40 DEG C, is aged 1-5 hour, obtains pale pink
Precipitation, pale pink is precipitated suction filtration, washing, and 30 DEG C～60 DEG C vacuum drying chambers of feeding are dried 8-12 hour and obtain pale pink carbonic acid
Manganese powder end；
（4）By step（3）Obtained pale pink manganese carbonate powder is placed in 200 DEG C -500 DEG C pre-sintered 1-5 hours in Muffle furnace,
The salt pickling being 0.1 mol/L with concentration after pre-sintering 1-3 days, suction filtration, washing, send into 60 DEG C～120 DEG C vacuum drying 8-12
Hour obtains black powder manganese dioxide；
（5）Lithium source in molar ratio:Step（4）Gained manganese dioxide=1:2 weigh lithium source and step（4）Gained manganese dioxide is in little
In beaker, heating water bath stirring makes it be sufficiently mixed uniformly, is dried, and is placed in 650 DEG C -850 DEG C sintering 10-24 in Muffle furnace little
When, after naturally cool to room temperature with stove, that is, obtain the hollow manganate cathode material for lithium being made up of octahedra particle；
Described lithium source is one or more of lithium acetate, lithium carbonate and lithium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611059278.1A CN106450284A (en) | 2016-11-25 | 2016-11-25 | Method for preparing hollow-microsphere lithium manganate positive electrode material with higher electrochemical properties |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611059278.1A CN106450284A (en) | 2016-11-25 | 2016-11-25 | Method for preparing hollow-microsphere lithium manganate positive electrode material with higher electrochemical properties |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106450284A true CN106450284A (en) | 2017-02-22 |
Family
ID=58218608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611059278.1A Pending CN106450284A (en) | 2016-11-25 | 2016-11-25 | Method for preparing hollow-microsphere lithium manganate positive electrode material with higher electrochemical properties |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106450284A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987743A (en) * | 2018-09-04 | 2018-12-11 | 江南大学 | Ternary cathode material of lithium ion battery and preparation method thereof with hollow structure |
| CN111180688A (en) * | 2019-12-30 | 2020-05-19 | 中南大学 | Micron-scale hollow porous sodium-ion battery positive electrode material and preparation method thereof |
| CN112174213A (en) * | 2020-09-18 | 2021-01-05 | 浙江浙能中科储能科技有限公司 | Preparation of dispersed spherical manganese oxide material and application of dispersed spherical manganese oxide material in zinc battery |
| CN115571921A (en) * | 2022-09-27 | 2023-01-06 | 安徽博石高科新材料股份有限公司 | Method for preparing spinel lithium manganate from rhodochrosite |
| CN115974162A (en) * | 2022-12-30 | 2023-04-18 | 贵州大学 | Preparation method of lithium manganate positive electrode material and lithium manganate positive electrode material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474650A (en) * | 2013-10-11 | 2013-12-25 | 哈尔滨工业大学 | Method for preparing hollow high voltage nickel manganese acid lithium anode material |
| CN104600286A (en) * | 2015-01-29 | 2015-05-06 | 扬州大学 | Preparation method of positive active material hollow spherical lithium manganate of lithium ion battery |
| CN105152220A (en) * | 2015-08-05 | 2015-12-16 | 柳州豪祥特科技有限公司 | Method for preparing spinel lithium manganate through ball milling |
| CN105914351A (en) * | 2016-04-14 | 2016-08-31 | 北京晶晶星科技有限公司 | Preparation method of spinel type lithium manganate or lithium nickel manganese oxide |
-
2016
- 2016-11-25 CN CN201611059278.1A patent/CN106450284A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474650A (en) * | 2013-10-11 | 2013-12-25 | 哈尔滨工业大学 | Method for preparing hollow high voltage nickel manganese acid lithium anode material |
| CN104600286A (en) * | 2015-01-29 | 2015-05-06 | 扬州大学 | Preparation method of positive active material hollow spherical lithium manganate of lithium ion battery |
| CN105152220A (en) * | 2015-08-05 | 2015-12-16 | 柳州豪祥特科技有限公司 | Method for preparing spinel lithium manganate through ball milling |
| CN105914351A (en) * | 2016-04-14 | 2016-08-31 | 北京晶晶星科技有限公司 | Preparation method of spinel type lithium manganate or lithium nickel manganese oxide |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987743A (en) * | 2018-09-04 | 2018-12-11 | 江南大学 | Ternary cathode material of lithium ion battery and preparation method thereof with hollow structure |
| CN111180688A (en) * | 2019-12-30 | 2020-05-19 | 中南大学 | Micron-scale hollow porous sodium-ion battery positive electrode material and preparation method thereof |
| CN111180688B (en) * | 2019-12-30 | 2022-08-05 | 中南大学 | Micron-scale hollow porous sodium-ion battery positive electrode material and preparation method thereof |
| CN112174213A (en) * | 2020-09-18 | 2021-01-05 | 浙江浙能中科储能科技有限公司 | Preparation of dispersed spherical manganese oxide material and application of dispersed spherical manganese oxide material in zinc battery |
| CN115571921A (en) * | 2022-09-27 | 2023-01-06 | 安徽博石高科新材料股份有限公司 | Method for preparing spinel lithium manganate from rhodochrosite |
| CN115974162A (en) * | 2022-12-30 | 2023-04-18 | 贵州大学 | Preparation method of lithium manganate positive electrode material and lithium manganate positive electrode material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103928672B (en) | A kind of positive electrode active material for lithium ion battery and preparation method thereof | |
| CN105185954B (en) | A kind of LiAlO2Coat LiNi1-xCoxO2Anode material for lithium-ion batteries and preparation method thereof | |
| CN102088085B (en) | Lithium ion battery positive material and preparation method thereof | |
| CN106450284A (en) | Method for preparing hollow-microsphere lithium manganate positive electrode material with higher electrochemical properties | |
| CN103236534B (en) | A kind of preparation method of lithium ion battery silicon oxide/carbon composite negative pole material | |
| CN103972497B (en) | Lithium ion battery Co2snO4/ C nano composite negative pole material and preparation and application thereof | |
| CN103280574A (en) | Lithium-enriched ternary anode material of power lithium-ion battery and preparation method of lithium-enriched ternary anode material | |
| CN105470455A (en) | Modified lithium ion battery positive electrode material and preparation method therefor | |
| CN106450285A (en) | Preparation method capable of increasing electrochemical performance of magnesium-sodium-doped lithium permanganate anode material | |
| CN110429268A (en) | A kind of modified boron doping lithium-rich manganese-based anode material and the preparation method and application thereof | |
| CN103219507B (en) | Composite material with tubular structure as well as preparation method and application thereof | |
| CN105428641A (en) | Method for preparing lithium manganese oxide cathode material by synergistically doping aluminum and sodium with high rate performance | |
| CN103390748B (en) | A kind of preparation method of alumina-coated lithium cobaltate cathode material | |
| CN103515582A (en) | Preparation method of lithium ion battery silicon-carbon composite cathode material | |
| CN107302083A (en) | A kind of solid reaction process preparation method of nickel lithium manganate cathode material | |
| CN103311540B (en) | A kind of anode material for lithium-ion batteries and preparation method thereof | |
| CN107437620A (en) | The preparation method of nickelic ternary NCM622 nano-materials | |
| CN105304894A (en) | Method for preparing high-performance lithium manganite positive electrode material by compound doping | |
| CN103996838A (en) | Lithium zirconate-cladded lithium-rich positive material for lithium ion battery and preparation method thereof | |
| CN109037649A (en) | It is a kind of to be mixed with modified nickel cobalt lithium aluminate cathode material and preparation method thereof | |
| CN103441257B (en) | A kind of preparation method of lithium titanate material | |
| CN107093739A (en) | Kalium ion battery positive electrode potassium Mn oxide and preparation method thereof | |
| CN103441238A (en) | Mg-doped Li-rich anode material and preparation method for same | |
| CN105098158A (en) | Zirconium-doped lithium-rich cathode material of lithium ion battery and preparation method of zirconium-doped lithium-rich cathode material | |
| CN103872313B (en) | Anode material for lithium-ion batteries LiMn2‑2xM(II)xSixO4And preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |
|
| WD01 | Invention patent application deemed withdrawn after publication |