CN101841018B - Single crystal lithium manganese oxide for lithium ion battery and preparation method thereof - Google Patents

Single crystal lithium manganese oxide for lithium ion battery and preparation method thereof Download PDF

Info

Publication number
CN101841018B
CN101841018B CN2010102052394A CN201010205239A CN101841018B CN 101841018 B CN101841018 B CN 101841018B CN 2010102052394 A CN2010102052394 A CN 2010102052394A CN 201010205239 A CN201010205239 A CN 201010205239A CN 101841018 B CN101841018 B CN 101841018B
Authority
CN
China
Prior art keywords
single crystal
manganese oxide
sintering
lithium manganese
crystal grain
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.)
Active
Application number
CN2010102052394A
Other languages
Chinese (zh)
Other versions
CN101841018A (en
Inventor
唐朝辉
王志兴
彭文杰
袁荣忠
蒋湘康
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Shanshan Battery Materials Co Ltd
Original Assignee
HUNAN SHANSHAN NEW MATERIAL CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HUNAN SHANSHAN NEW MATERIAL CO Ltd filed Critical HUNAN SHANSHAN NEW MATERIAL CO Ltd
Priority to CN2010102052394A priority Critical patent/CN101841018B/en
Publication of CN101841018A publication Critical patent/CN101841018A/en
Application granted granted Critical
Publication of CN101841018B publication Critical patent/CN101841018B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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

Landscapes

  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a single crystal lithium manganese oxide for a lithium ion battery and a preparation method thereof. The single crystal lithium manganese oxide is a pure spinel prepared by doping at least three elements of Li, M1 and M2 with a chemical formula of Li(Mn2-x-y-zLixM1yM2z)O4, the specific surface area thereof is 0.2-0.6m<2>/g, and the tap density thereof is 1.5-2.5g/cm<3>; and in the chemical formula, M1 and M2 are respectively one element of Fe, Co, Al, Ca, Mg, Ti, Cr, Ni and Y, wherein 0.05<=x<=0.15, 0.01<=y<=0.1, and 0.01<=z<=0.1. The invention can eliminate oxygen defects caused in the high temperature sintering process, has low specific surface area of single crystal particles, inhibits Mn from dissolving better, has excellent multiplying power property and normal temperature and high temperature circulation performance, and can satisfy use requirements of power vehicles even electric vehicles; 10C/1C ratio thereof is over 95%, and the service life thereof is at least 5 years; and the invention can be applied to lithium ion batteries used in the fields of cellphones, electric tools, electric motor cars, electric vehicles and the like.

Description

Single crystal lithium manganese oxide for lithium ion battery and preparation method thereof
Technical field
The present invention relates to a kind of anode material for lithium ion battery; A kind of single crystal lithium manganese oxide for lithium ion battery and preparation method thereof specifically.
Background technology
Being used for the electric automobile anode material for lithium ion battery at present mainly is with monocrystalline lithium manganese oxide and LiFePO4.LiFePO4 good cycle wherein, but poorly conductive, synthesis technique stability is bad, is difficult to realize stabilization of industry production; Though the monocrystalline lithium manganese oxide can be used for positive electrode, spinel-type monocrystalline lithium manganese oxide (LiMn 2O 4) there is the John-Teller effect in material, in charge and discharge process, is prone to the recurring structure distortion, causes rapid decay, particularly under the service condition of higher temperature, capacity attenuation is more outstanding.
The PCT patent 200880000855.7 of Nippon Mining and Metals Co., Ltd's application discloses use general formula Li 1+xMn 2-yM yO 4(M is the element more than a kind that is selected among Al, Mg, Si, Ca, Ti, Cu, Ba, W and the Pb, 0.1≤x≤0.2,0.06≤y≤0.3); Phase I 350～700 ℃ of constant temperature 3～9 hours; 1～5 hour mode of 800～1000 ℃ of constant temperature of second stage, two sections continuous constant temperatures synthesize product D 50Be that specific area is at 1.0～2.0m between 6～9um 2Between/the g, tap density is at 0.5-1.0g/cm 3Between.
200810016180.7 of Qingdao LNCM Co., Ltd.'s application discloses a kind of micron order mono-crystalline structures modification positive spinel monocrystalline lithium manganese oxide LiMn 2-zM zO 40≤z≤0.5 and preparation method thereof; Be that composite oxides with manganese and modified metal M are the preparation raw material, 400～1200 ℃ of heat treatments 1～48 hour are synthetic, and the porous aggregate be made up of nano microcrystalline of these composite oxides; This aggregate average-size is between the 5-20 micron, and the composite oxide power specific area is greater than 20m 2/ g (BET method mensuration); The modification monocrystalline lithium manganese oxide material of preparation is made up of micron order regular octahedron monocrystalline basically, and the single crystal grain average-size is between the 5-20 micron, and specific area is less than 0.5m 2/ g.
High temperature sintering very easily brings oxygen defect in the crystal structure in the spinel-type monocrystalline lithium manganese oxide material building-up process; The problem of decline of generation capacity and cycle performance variation; With two sections continuous constant temperature synthesis techniques of first low temperature, back high temperature, and one section high temperature sintering in the patent 200810016180.7 all is easy to generate this problem in the patent 200880000855.7.The present invention uses first section high temperature sintering to form desirable single crystal grain, and the metal oxide of doping gets into crystal structure smoothly; Second section with process annealing then, eliminates oxygen defect, makes the product perfect crystalline.
Low specific surface area is the index that spinel-type monocrystalline lithium manganese oxide material is all pursued always; Receive himself structural limitations; Material surface contacts with electrolyte in the cyclic process, and the easy recurring structure disproportionated reaction with the manganic ion of collapsing makes the cycle performance variation; Cause strengthening, and lower specific area can be beneficial to the raising of cycle performance in the electric automobiles application difficulty; When tap density was higher, the amount of material was also more in the unit volume, and packing, transportation aspect all more have superiority.The D that mentions in the patent 200880000855.7 50Be that specific area is at 1.0～2.0m between 6～9um 2Between/the g, tap density is at 0.5-1.0g/cm 3Between, by the control of this particle size range, have that specific area is too high spends low shortcoming with vibration density.Synthetic material controllable specific surface area of the present invention is built in 0.2～0.6m 2Between/the g, tap density is at 1.5-2.5g/cm 3Between, have the better application prospect.
In addition, the dissolving situation that an important indicator judging spinel-type monocrystalline lithium manganese oxide quality of materials is Mn, battery is in charge and discharge process, some side reactions can take place in electrolyte accordingly, produce the hydrofluoric acid (HF) of trace, HF can with LiMn 2O 4Material reacts; Produce inactive monocrystalline lithium manganese oxide; Cause generation and the stripping of irreversible Mn; Reduce the charge/discharge capacity and the electric performance stablity property of material, solving the manganese problems of dissolution also is the problem that exploitation monocrystalline lithium manganese oxide material must face, and above two patents are not all mentioned the inhibitory action that Mn is dissolved and solved.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of single crystal lithium manganese oxide for lithium ion battery and preparation method thereof is provided.Its high temperature circulation and multiplying power cycle performance are excellent when being used for anode material for lithium ion battery with realization; Can eliminate the oxygen defect that brings in the high-temperature sintering process; Can effectively suppress the Mn dissolving.
Monocrystalline lithium manganese oxide of the present invention is that chemical formula is Li (Mn 2-x-y-zLi xM1 yM2 z) O 4The pure spinel-type of at least three kinds of element dopings of Li, M1, M2; Its specific area is 0.2～0.6m 2/ g; Tap density is 1.5～2.5g/cm 3Between; M1 in the formula and M2 are that any one element among Fe, Co, Al, Ca, Mg, Ti, Cr, Ni, the Y is formed; 0.05≤x in the formula≤0.15,0.01≤y≤0.1,0.01≤z≤0.1).
The preparation method of monocrystalline lithium manganese oxide may further comprise the steps:
(1) with raw material electrolytic manganese dioxide (EMD) and lithium carbonate (Li 2CO 3), and the oxide of doping metals M1, M2: a kind of among Fe, Co, Al, Ca, Mg, Ti, Cr, Ni or the Y.More than; By molecular formula Li (Mn 2-x-y-zLi xM1 yM2 z) O 4Mixed 1-5 hour 0.05 the ratio of≤x≤0.15,0.01≤y≤0.1,0.01≤z≤0.1 joins in the mixing tank, mix;
(2) first sections sintering: in sintering temperature is 800-1200 ℃, constant temperature sintering 5-20 hour; Make alloy get into lattice, form single crystal grain, reduce the specific area of monocrystalline lithium manganese oxide material through the high temperature mode;
(3) will carry out powder handling through the single crystal grain ball mill crushing of first section sintering, sieve, obtain the single crystal grain that granularity is the 3-15 micron through the 100-300 order;
(4) second sections sintering: in temperature is 400-800 ℃, constant temperature sintering 5-20 hour; The process annealing that is used for material is eliminated issuable oxygen defect in first section sintering process, makes its complete crystallization, obtains the spinel-type monocrystalline lithium manganese oxide LiMn of complete in crystal formation 2O 4
(5) the single crystal grain ball mill crushing behind sintering is carried out powder handling, sieve, obtain D50 and be 6～12 microns single crystal grain through the 200-400 order.
Advantage of the present invention: at least three kinds of element dopings that adopt Li, M1, M2; Can eliminate the oxygen defect that brings in the high-temperature sintering process; Its single crystal grain, specific area is low, can better suppress the dissolving of Mn; Its high rate performance is excellent, and the 10C/1C ratio can reach more than 95%, and the 20C/1C ratio can reach more than 90%.The structure of its monocrystalline lithium manganese oxide material in the charge and discharge cycles process is more stable, and normal-temperature circulating performance and high temperature cyclic performance are excellent, and its 25 ℃ of normal temperature 1000 all capability retentions that circulate can reach more than 80%; Its 50 ℃ of high temperature circulation, 500 all capability retentions can reach more than 75%; The excellence of this normal-temperature circulating performance and high temperature cyclic performance can satisfy the demand that power is used even electric automobile uses; Its long service life can guarantee that reach more than 5 years the useful life of battery at least.Can mix use by a certain percentage with other lithium ion cell anode material lithium cobaltate, ternary material etc., also can use separately.On the lithium ion battery that can be used for using in fields such as mobile phone, electric tool, battery-operated motor cycle, electric automobile.
Description of drawings
Fig. 1 is the synthetic spinel type monocrystalline lithium manganese oxide LiMn of embodiment 1 2O 4XRD figure spectrum;
Fig. 2 is embodiment 1 synthetic spinel type monocrystalline lithium manganese oxide LiMn 2O 4The SEM collection of illustrative plates;
Fig. 3 is embodiment 1 synthetic spinel type monocrystalline lithium manganese oxide LiMn 2O 4Normal temperature (25 ℃) loop attenuation collection of illustrative plates;
Fig. 4 is embodiment 1 synthetic spinel type monocrystalline lithium manganese oxide LiMn 2O 4High temperature (50 ℃) loop attenuation collection of illustrative plates;
Fig. 5 is embodiment 1 synthetic spinel type monocrystalline lithium manganese oxide LiMn 2O 4The multiplying power test curve;
Fig. 6 is the synthetic spinel type monocrystalline lithium manganese oxide LiMn of embodiment 2 2O 4XRD figure spectrum;
Fig. 7 is the synthetic spinel type monocrystalline lithium manganese oxide LiMn of embodiment 3 2O 4XRD figure spectrum.
Embodiment
Below in conjunction with embodiment the present invention is described further.
Embodiment 1:
(1) presses Li (Mn 1.8Li 0.1Co 0.05Mg 0.05) O 4Design is with the lithium carbonate (Li of 10 kilograms of raw material electrolytic manganese dioxides (EMD) and corresponding weight 2CO 3), blended metal oxide Co 2O 3And MgO joins in the mixing tank and to mix 1-5 hour, mixes;
(2) first sections sintering: in sintering temperature is 1150 ℃, constant temperature sintering 5 hours; Make alloy get into lattice, form single crystal grain, reduce the specific area of monocrystalline lithium manganese oxide material through the high temperature mode;
(3) will carry out powder handling through the single crystal grain ball mill crushing of first section sintering, sieve, obtain the single crystal grain that D50 is the 3-15 micron through 200 orders;
(4) second sections sintering: in temperature is 600 ℃, constant temperature sintering 15 hours; The process annealing that is used for material is eliminated issuable oxygen defect in first section sintering process, makes its complete crystallization, obtains the spinel-type monocrystalline lithium manganese oxide LiMn of complete in crystal formation 2O 4
(5) the single crystal grain ball mill crushing behind sintering is carried out powder handling, sieve through 300 orders, obtain D50 and be 6～12 microns single crystal grain.
Ma Erwen 2000 particle size analyzers carry out testing graininess, and it is between 6～12 microns that synthetic product controllable granularity accumulative total volume distributed median in particle size distribution reaches 50% D50.In addition, specific area is at 0.2～0.6m 2low number range between the/g, tap density is at 1.5～2.5g/cm 3Between.
The spinel-type monocrystalline lithium manganese oxide LiMn that embodiment 1 is synthetic 2O 4The XRD figure spectrum of having carried out, its result is as shown in Figure 1, show that synthetic product is pure spinel-type LiMn 2O 4Material.Embodiment 1 synthetic spinel-type monocrystalline lithium manganese oxide has been carried out ESEM (SEM) test, and its result is as shown in Figure 2.One time the single crystal grain size mainly is distributed between 2～15 microns, and the formation of single crystal grain effectively reduces the specific area of material, has reduced material and electrolyte contact-making surface in the lithium ion battery.
Embodiment 1 synthetic spinel-type monocrystalline lithium manganese oxide is used for 063048 model box hat battery; Synthetic spinel-type monocrystalline lithium manganese oxide is carried out the electrical property assessment; Negative pole use that Shanghai China fir China fir new material Co., Ltd produces Delanium YT7, the LD-124 that electrolyte uses Dongguan China fir China fir new material Co., Ltd to produce.At first in the ratio of monocrystalline lithium manganese oxide: SP (conductive carbon black): PVDF (binding agent): NMP (organic solvent)=94:2:4 with mixing of materials; Then it is uniformly coated on the Al paper tinsel collector; After oven dry, section, process positive plate; The negative plate collector uses Copper Foil, and battery process before carrying out the cycle performance assessment changes into and activation procedure, so that the activity of battery is given full play to.The battery design capacity is 500mAh, discharges and recharges assessment and all carries out with 1C, and selecting temperature is 25 ℃ of normal temperature tests, 50 ℃ of high temperature tests.
The charge and discharge cycles of battery decay collection of illustrative plates is as shown in Figure 3 under its normal temperature (25 ℃) loop attenuation collection of illustrative plates normal temperature; The result shows: circulation early stage, decling phase was to comparatively fast; Along with cycle-index increases; The amplitude of decay descends gradually; Its 500 times and 1000 circulation volume conservation rates can reach 87.8% and 81.7% respectively, and by electric tool and the power vehicle frequency computation part that discharges and recharges with battery, 1000 circulations can guarantee that reach more than 5 years the useful life of battery at least.Fig. 4 is the charge and discharge cycles decay collection of illustrative plates of battery under the high temperature; 300 circulation back capability retentions are 84.7%, near 85%, 500 circulation volume conservation rate 76.4%; Greater than 75%; The circulation weekly of 500 circulations all decays and is lower than 0.05%, can satisfy when causing battery temperature to raise because of reasons such as machinery heating or weather, still keeps better cycle performance.
Its charging and discharging curve is as shown in Figure 5, is the ratio benchmark with 1C, and the 2C/1C ratio is 99%, and the 10C/1C ratio reaches 95.5%, and the 20C/1C ratio reaches 90.8%, and high-rate discharge ability is excellent.Concrete data are seen table 1.Lithium ion battery, is had relatively high expectations to high rate performance when using as power fields such as electric automobiles with spinel-type monocrystalline lithium manganese oxide anode material.The monocrystalline lithium manganese oxide material that the present invention synthesizes still can reach more than 90% with the relative ratios of 1C under the high magnification of 20C, shows excellent high rate performance.
Table 1 synthetic spinel type monocrystalline lithium manganese oxide LiMn 2O 4The multiplying power test data
Figure 967632DEST_PATH_IMAGE001
The present invention has carried out the Mn dissolving test of simulated battery system behind 85 ℃ of baking 18h to synthetic monocrystalline lithium manganese oxide material; Under this test condition; The stripping quantity of Mn is in 0.001～0.002% scope; And other commercial Mn stripping quantity that uses common low-grade specification monocrystalline lithium manganese oxide differs about 10 times up to 0.01～0.02% on year-on-year basis.
The present invention is according to theory analysis and checking; From control of material specific area and doping system two aspects the material synthesis technique has been carried out preferably; Lower specific area inhibition material contacts with electrolyte; Alloy gets into lattice, and form the oxide layer of finite concentration gradient on the surface, has effectively protected contacting of material and electrolyte.
Embodiment 2:
Press Li (Mn 1.82Li 0.15Al 0.015Cr 0.015) O 4Design is with the lithium carbonate (Li of raw material electrolytic manganese dioxide (EMD) 10kg and corresponding weight 2CO 3), blended metal oxide Al 2O 3And Cr 2O 3, 950 ℃ of one-stage sinterings, constant temperature sintering 8 hours; 700 ℃ of bis sinterings, constant temperature sintering 12 hours, other synthesis condition is identical with embodiment 1.
The XRD of synthetic product and SEM figure is respectively like Fig. 6, shown in 7, have complete crystal formation and desirable single crystal grain.
Embodiment 3:
Press Li (Mn 1.84Li 0.06Fe 0.05Ti 0.05) O 4Design is with the lithium carbonate (Li of raw material electrolytic manganese dioxide (EMD) 10kg and corresponding weight 2CO 3), blended metal oxide Fe 2O 3And TiO 2, 800 ℃ of one-stage sinterings, constant temperature sintering 10 hours; 800 ℃ of bis sinterings, constant temperature sintering 10 hours, other synthesis condition is identical with embodiment 1.
The XRD of synthetic product and SEM figure respectively like Fig. 8, shown in 9, the product complete in crystal formation possesses single crystal grain simultaneously.
Embodiment 4-11:
According to preparation method of the present invention, with different condition in the table 2 (other is with embodiment 1), synthetic a series of spinel-type monocrystalline lithium manganese oxide Li (Mn 2-x-y-zLi xM1 yM2 z) O 4Positive electrode active materials.
The monocrystalline lithium manganese oxide that table 2 different condition is synthetic
Figure 947090DEST_PATH_IMAGE002

Claims (2)

1. a single crystal lithium manganese oxide for lithium ion battery is characterized in that, is that chemical formula is Li (Mn 2-x-y-zLi xM1 yM2 z) O 4The pure spinel-type of at least three kinds of element dopings of Li, M1, M2; Its specific area is 0.2～0.6m 2/ g; Tap density is 1.5～2.5g/cm 3Between; M1 in the formula and M2 are that any one or more than one the element among Fe, Co, Al, Ca, Mg, Ti, Cr, Ni, the Y is formed; 0.05≤x in the formula≤0.15,0.01≤y≤0.1,0.01≤z≤0.1.
2. the preparation method of the described single crystal lithium manganese oxide for lithium ion battery of claim 1 is characterized in that, may further comprise the steps:
(1) with raw material electrolytic manganese dioxide (EMD) and lithium carbonate (Li 2CO 3), and a kind of among oxide Fe, Co, Al, Ca, Mg, Ti, Cr, Ni or the Y of doping metals M1, M2, by molecular formula Li (Mn 2-x-y-zLi xM1 yM2 z) O 4, the ratio of 0.05≤x in the formula≤0.15,0.01≤y≤0.1,0.01≤z≤0.1 joins in the mixing tank mixed 1-5 hour, mixed;
(2) first sections sintering: in sintering temperature is 800-1200 ℃, constant temperature sintering 5-20 hour; Make alloy get into lattice, form single crystal grain, reduce the specific area of monocrystalline lithium manganese oxide material through the high temperature mode;
(3) will carry out powder handling through the single crystal grain ball mill crushing of first section sintering, sieve, obtain the single crystal grain that granularity is the 3-15 micron through the 100-300 order;
(4) second sections sintering: in temperature is 400-800 ℃, constant temperature sintering 5-20 hour; The process annealing that is used for material is eliminated issuable oxygen defect in first section sintering process, makes its complete crystallization, obtains the spinel-type monocrystalline lithium manganese oxide LiMn of complete in crystal formation 2O 4
(5) single crystal grain ball mill crushing that will the back sintering carries out powder handling, sieves through the 200-400 order, obtains D50 and be 6～12 microns single crystal grain.
CN2010102052394A 2010-06-22 2010-06-22 Single crystal lithium manganese oxide for lithium ion battery and preparation method thereof Active CN101841018B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010102052394A CN101841018B (en) 2010-06-22 2010-06-22 Single crystal lithium manganese oxide for lithium ion battery and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010102052394A CN101841018B (en) 2010-06-22 2010-06-22 Single crystal lithium manganese oxide for lithium ion battery and preparation method thereof

Publications (2)

Publication Number Publication Date
CN101841018A CN101841018A (en) 2010-09-22
CN101841018B true CN101841018B (en) 2012-03-21

Family

ID=42744253

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010102052394A Active CN101841018B (en) 2010-06-22 2010-06-22 Single crystal lithium manganese oxide for lithium ion battery and preparation method thereof

Country Status (1)

Country Link
CN (1) CN101841018B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103035904B (en) * 2012-12-21 2015-03-04 浙江工业大学 Modified lithium manganate material, and preparation method and application thereof
CN103682308A (en) * 2013-11-28 2014-03-26 东北大学 Method for preparing lithium-ion battery material LiNi<0.5>Mn<1.5-x>Ca<x>O<4>
CN104241640A (en) * 2014-10-10 2014-12-24 国家电网公司 Lithium nickel-cobalt-aluminum positive electrode material, preparation method thereof and lithium ion battery
CN109420551B (en) * 2017-08-22 2021-05-14 苏州宝时得电动工具有限公司 Positive electrode material, preparation method thereof and battery containing positive electrode material
CN111485278A (en) * 2020-03-29 2020-08-04 桂林理工大学 Solid-phase reaction synthesis method of electrode active material single crystal
CN111509219B (en) * 2020-04-13 2022-04-15 江门市科恒实业股份有限公司 Lithium manganate battery material and preparation method thereof
CN111682170B (en) * 2020-05-20 2022-05-17 广东邦普循环科技有限公司 Single crystal ternary cathode material and preparation method and application thereof
CN112086617A (en) * 2020-09-03 2020-12-15 星恒电源(滁州)有限公司 High-lithium-ion-conductivity positive plate and preparation method thereof
CN112993241B (en) * 2021-04-02 2022-06-10 中南大学 Preparation method of single-crystal lithium manganate material
CN113582256B (en) * 2021-09-28 2021-12-10 金驰能源材料有限公司 High-nickel single crystal positive electrode material, precursor thereof and preparation method of precursor
WO2024050758A1 (en) * 2022-09-08 2024-03-14 宁德时代新能源科技股份有限公司 Lithium-containing nickel-manganese composite oxide, preparation method therefor, and positive pole piece, secondary battery and electric device comprising same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101548415A (en) * 2007-07-19 2009-09-30 日矿金属株式会社 Lithium-manganese double oxide for lithium ion batteries and process for the production of the double oxide
CN101587950A (en) * 2008-05-20 2009-11-25 青岛新正锂业有限公司 Micron single crystal granular anode material of lithium ion battery

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006318926A (en) * 1998-07-02 2006-11-24 Nippon Chem Ind Co Ltd Positive electrode active material and nonaqueous electrolyte secondary battery
JP2006114408A (en) * 2004-10-15 2006-04-27 Izumi Taniguchi Lithium manganese complex oxide particle and positive electrode for secondary battery using this, as well as lithium secondary battery

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101548415A (en) * 2007-07-19 2009-09-30 日矿金属株式会社 Lithium-manganese double oxide for lithium ion batteries and process for the production of the double oxide
CN101587950A (en) * 2008-05-20 2009-11-25 青岛新正锂业有限公司 Micron single crystal granular anode material of lithium ion battery

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JP特开2006-114408A 2006.04.27
JP特开2006-318926A 2006.11.24

Also Published As

Publication number Publication date
CN101841018A (en) 2010-09-22

Similar Documents

Publication Publication Date Title
CN101841018B (en) Single crystal lithium manganese oxide for lithium ion battery and preparation method thereof
KR101403828B1 (en) Li-Ni COMPLEX OXIDE PARTICLE POWDER FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
US20150118563A1 (en) Lithium-rich positive electrode material, lithium battery positive electrode, and lithium battery
KR20170075596A (en) Positive electrode active material for rechargeable lithium battery, method for menufacturing the same, and rechargeable lithium battery including the same
CN102306767B (en) Method for preparing spinel lithium manganate serving as cathode material of lithium ion power battery
EP4024519A1 (en) Positive electrode material, preparation method therefor and lithium ion battery
CN101587950A (en) Micron single crystal granular anode material of lithium ion battery
CN101847722A (en) High-performance lithium ion battery cathode material and preparation method thereof
CN102420326A (en) Preparation method of bulky-grain spinel lithium manganate material
CN114256456B (en) High-voltage positive electrode material and battery containing same
Chen et al. Synthesis and superior cathode performance of sandwiched LiMn2O4@ rGO nanocomposites for lithium-ion batteries
CN115084508B (en) Positive electrode active material, battery and preparation method thereof
CN108807928B (en) Synthesis of metal oxide and lithium ion battery
JP4740415B2 (en) Lithium secondary battery for electric or hybrid vehicles
Wang et al. Surface modification of Li rich Li1. 2Mn0. 54Ni0. 13Co0. 13O2 cathode particles
CN112421009A (en) Positive electrode material, method for producing same, and secondary battery
CN112701276A (en) Quaternary polycrystalline positive electrode material and preparation method and application thereof
Zhang et al. Identifying the aging mechanism in multiple overdischarged LiCoO2/mesocarbon microbeads batteries
CN109461930B (en) Gradient-structured multi-component material for lithium ion battery and preparation method thereof
Wang et al. Preparation and performance of Mg-doped spinel-structured LiMn2O4 cathode materials
CN103337625B (en) The preparation method of a kind of LiFePO4-denatured conductive carbon black combination electrode material
WO2014071724A1 (en) Lithium-rich anode material, lithium battery anode, and lithium battery
CN107154491B (en) High-efficiency lithium ion battery positive electrode material and preparation method and application thereof
WO2024011596A1 (en) Positive electrode active material, preparation method for positive electrode active material, positive electrode plate, secondary battery, battery module, battery pack and electric device
CN102738455A (en) Layered lithium manganate and 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
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP03 Change of name, title or address

Address after: 410205 Hunan province Changsha hi tech Development Zone, Lu Valley Lu Tin Road No. 17-8

Patentee after: HUNAN SHANSHAN ENERGY TECHNOLOGY Co.,Ltd.

Address before: 410205 Hunan province Changsha City Lugu Industrial Park Lu Tin Road No. 17-8

Patentee before: HUNAN SHANSHAN ADVANCED MATERIAL CO.,LTD.

CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: No. 17-8, Lutian Road, high tech Development Zone, Changsha City, Hunan Province, 410205

Patentee after: Hunan Shanshan Energy Technology Co.,Ltd.

Address before: No. 17-8, Lutian Road, high tech Development Zone, Changsha City, Hunan Province, 410205

Patentee before: HUNAN SHANSHAN ENERGY TECHNOLOGY Co.,Ltd.

Address after: No. 17-8, Lutian Road, high tech Development Zone, Changsha City, Hunan Province, 410205

Patentee after: BASF Shanshan battery material Co.,Ltd.

Address before: No. 17-8, Lutian Road, high tech Development Zone, Changsha City, Hunan Province, 410205

Patentee before: Hunan Shanshan Energy Technology Co.,Ltd.