CN102347473B - Anode composite material particle of lithium ion battery and preparation method thereof - Google Patents
Anode composite material particle of lithium ion battery and preparation method thereof Download PDFInfo
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- CN102347473B CN102347473B CN201010242522.4A CN201010242522A CN102347473B CN 102347473 B CN102347473 B CN 102347473B CN 201010242522 A CN201010242522 A CN 201010242522A CN 102347473 B CN102347473 B CN 102347473B
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Abstract
The invention relates to an anode composite material particle of a lithium ion battery and a preparation method thereof. The composite material particle comprises anode active substance particles and an aluminium phosphate layer cladded thereon. The invention also relates to the preparation method of the anode composite material particle of a lithium ion battery. The method comprises steps of: providing an aluminium nitrate solution; adding anode active substance particles to be cladded in the aluminium nitrate solution, controlling an addition of the anode active substance and forming a mixture; adding a phosphate solution into the mixture for reaction to form an aluminium phosphate layer on the anode active substance particle surfaces; and carrying out heat treatment on anode active substance particle with the aluminium phosphate layer to obtain the anode composite material particles.
Description
Technical field
The present invention relates to a kind of anode composite material of lithium ion battery particle and preparation method thereof, relate in particular to a kind of anode composite material of lithium ion battery particle with aluminum phosphate and preparation method thereof.
Background technology
To the particle surface of active substance of lithium ion battery anode, adopting other material to form coated, is in prior art, positive active material to be carried out the common method of modification.For example, at the coated one deck carbon of the particle surface of LiFePO4, can effectively solve the problem that LiFePO4 conductivity is lower, make the LiFePO4 that is coated with carbon-coating there is good conductivity.In addition, prior art shows, and the thermal stability that can improve lithium ion cell positive at cobalt acid lithium or the coated aluminum phosphate of other positive active material particle surface (refers to document " Correlation between AlPO
4nanoparticle coating thickness on LiCoO
2cathode and thermal stablility " J.Cho, Electrochimica Acta 48 (2003) 2807-2811 and the patent No. are 7,326,498 United States Patent (USP)).
Method with aluminum phosphate clad anode active material in prior art is first to prepare aluminum phosphate particle to be scattered in the dispersion liquid forming in water, and positive active material particle is added in the dispersion liquid of this aluminum phosphate particle preparing, effect by absorption makes aluminum phosphate particle be adsorbed on positive active material large particle surface, again by the water evaporate to dryness in dispersion liquid, and heat treatment at 700 ℃, form the positive active material that surface has aluminum phosphate particle.
Yet, because aluminum phosphate is water insoluble, when disperseing in water, aluminum phosphate particle may form reunion, and when a large amount of positive active materials are added in aluminum phosphate dispersion liquid, the positive active material first adding adsorbs a large amount of aluminum phosphate particles, after the positive active material particle that adds may adsorb less than enough aluminum phosphate particles.Refer to Fig. 8, even if can be good at being coated, said method determines that this product 20 is aluminum phosphate from microcosmic and is distributed in positive active material bulky grain 24 surfaces with the form of granule 22, not the even aluminum phosphate material layer of one deck.Therefore, the aluminum phosphate coating layer forming on positive active material surface by said method is even not, cannot guarantee that each positive active material surface all can be coated one deck aluminum phosphate uniformly, thereby the cycle performance of lithium ion battery that makes to apply this positive active material is bad, make the method be difficult to heavy industrialization application.
Summary of the invention
In view of this, necessaryly provide a kind of and can form on positive active material surface the method for even aluminum phosphate coating layer, and there is the positive active material of this aluminum phosphate coating layer.
An anode composite material of lithium ion battery particle, the phosphoric acid aluminium lamination that it comprises positive active material particle and is coated on this positive active material particle surface.
A preparation method for anode composite material of lithium ion battery particle, it comprises: aluminum nitrate solution is provided; Positive active material particle to be covered is added in this aluminum nitrate solution, control the addition of this positive active material, form a muddy mixture; Add this muddy mixture to react phosphate solution, at this positive active material particle surface, form phosphoric acid aluminium lamination; And this surface of heat treatment has the positive active material particle of phosphoric acid aluminium lamination, obtain anode composite material particle.
Compared to prior art, the present invention has avoided, because the absorption of solid mixing generation is inhomogeneous, causing aluminum phosphate to be coated uneven phenomenon, is applicable to heavy industrialization application.In addition, the present invention can generate the even and continuous phosphoric acid aluminium lamination of a layer thickness at positive active material particle surface, but not by aluminum phosphate particle packing at positive active material particle surface, therefore there is better chemical property.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention aluminum phosphate clad anode active material.
Fig. 2 is the stereoscan photograph of the coated cobalt acid of embodiment of the present invention aluminum phosphate lithium.
Fig. 3 is the transmission electron microscope photo of the coated cobalt acid of embodiment of the present invention aluminum phosphate lithium.
Fig. 4 is the stereoscan photograph that the aluminum phosphate of contrast experiment's magnification at high multiple is coated cobalt acid lithium.
Fig. 5 is the stereoscan photograph that the aluminum phosphate of contrast experiment's low power amplification is coated cobalt acid lithium.
Fig. 6 is the cycle performance test curve of the coated positive active material of embodiment of the present invention aluminum phosphate.
Fig. 7 is the cycle performance test curve of the coated positive active material of contrast experiment's aluminum phosphate.
Fig. 8 is the structural representation of the aluminum phosphate clad anode active material of prior art.
Main element symbol description
Anode composite material particle 10
Positive active material particle 12
Phosphoric acid aluminium lamination 14
Granule 22
Bulky grain 24
Embodiment
Below in conjunction with the accompanying drawings and the specific embodiments anode composite material particle provided by the invention and preparation method thereof is described in further detail.
Refer to Fig. 1, the embodiment of the present invention provides a kind of anode composite material particle 10, the phosphoric acid aluminium lamination 14 that it comprises positive active material particle 12 and is coated on this positive active material particle surface.The mass percent of this phosphoric acid aluminium lamination 14 in this anode composite material particle 10 is 0.1% to 3%.The thickness of this phosphoric acid aluminium lamination 14 is preferably 5 nanometer to 20 nanometers.This phosphoric acid aluminium lamination 14 is created on this positive active material particle 12 surfaces for original position.This phosphoric acid aluminium lamination 14 is even thickness and continuous aluminum phosphate material layer.Further, in the interface of 12 of this phosphoric acid aluminium lamination 14 and this positive active material particles, may form interfacial diffusion, cobalt atom is diffused in this phosphoric acid aluminium lamination 14.
The material of this positive active material particle 12 can be by chemical formula Li
xco
1-ym
yo
2, Li
xmn
1-ym
yo
2or Li
xfe
1-ym
ypO
4represent, 0.1≤x≤1.1 wherein, 0≤y≤0.9, M is selected from least one in Mn, Cr, Co, Ni, V, Ti, Al, Ga and Mg.Preferably, the cobalt acid lithium (Li that the material of this positive active material particle 12 is stratiform
xcoO
2), the LiMn2O4 (Li of stratiform
xmnO
2) or olivine-type LiFePO4 (Li
xfePO
4).
It is a kind of by aluminum phosphate coated lithium ion battery positive active material that the embodiment of the present invention provides, and forms the method for described anode composite material particle 10, and it comprises the following steps:
Step 1, provides aluminum nitrate solution;
Step 2, adds positive active material particle to be covered in this aluminum nitrate solution, forms a mixture;
Step 3, adds this mixture to react phosphate solution, makes this positive active material particle surface form phosphoric acid aluminium lamination; And
Step 4, this surface of heat treatment has the positive active material particle of phosphoric acid aluminium lamination, obtains anode composite material particle.
This aluminum nitrate solution comprises liquid phase solvent and is dissolved in the aluminum nitrate of this solvent.Being appreciated that this solvent is chosen as can make aluminum nitrate dissociate to form Al
3+solvent.Therefore this solvent is not limited to water, can also be volatile organic solvent, and preferably, this solvent is one or several mixing in ethanol, acetone, dichloroethanes and chloroform.With respect to adopting water as solvent, using organic solvent if ethanol is as solvent, can avoid positive active material particle to react with water positive active material performance is reduced.
In above-mentioned steps two, this positive active material particle is insoluble to this aluminum nitrate solution, and both are that solid-liquid mixes, and object is that the surface uniform at this positive active material particle adheres to one deck Al
3+.Due to Al
3+with ionic species, exist, can be attached to uniformly positive active material particle surface, this positive active material particle is formed to the coated of atom level.Further, can control the addition of this positive active material, controlled being made as of ratio of this positive active material particle and aluminum nitrate solution makes this aluminum nitrate solution can cover this positive active material particle surface, makes the mixture obtaining be muddy.The object that forms muddy mixture is mainly just enough at positive active material particle surface, to form one deck aluminum phosphate coating layer in order to control the addition of aluminum nitrate solution.Particularly, the volume ratio of the volume of this aluminum nitrate solution and this positive active material particle is about 1: 10 to 1: 40.The particle diameter of this positive active material particle is preferably and is less than 20 microns.The aluminum phosphate coating layer that the addition of this aluminum nitrate solution can form by needs accounts for the mass percent of anode composite material particle to be determined, preferably, the mass percent of this aluminum phosphate coating layer in this anode composite material particle is 0.1% to 3%.
In above-mentioned steps three, this phosphate solution comprises that water is as solvent, and the soluble phosphate that is dissolved in this solvent, as phosphoric acid ammonia salt.This phosphoric acid ammonia salt comprises ammonium dihydrogen phosphate (NH
4h
2pO
4), diammonium hydrogen phosphate ((NH
4)
2hPO
4) and triammonium phosphate ((NH
4)
3pO
4) in one or more mixing.In this phosphate solution, contain phosphate anion.This phosphate anion can be positive phosphorus acid ion (PO
4 3-), dihydrogen phosphate ions (H
2pO
4 -) and phosphoric acid one hydrogen radical ion (HPO
4 2-) in one or more mixing.When this phosphate solution is added to described muddy mixture, this phosphate anion and the Al that is attached to positive active material particle surface
3+reaction, thus in positive active material particle surface original position, form the uniform aluminum phosphate precipitation of one deck.Preferably, this phosphate solution can dropwise add this muddy mixture, and is stirred, thereby makes this phosphate anion and this Al
3+can react uniformly at this positive active material particle surface.With aluminum nitrate solution similarly, the aluminum phosphate coating layer that the addition of this phosphate solution can form by needs accounts for the mass percent of anode composite material particle and is determined.
In above-mentioned steps four, this heat treated object is to make the better combination in interface of this aluminum phosphate and positive active material, forms composite material, and removes the ammonium nitrate of residual solvent and reaction generation.By this heat treatment, at aluminum phosphate and positive active material interface, may form interfacial diffusion, cobalt atom is diffused in this phosphoric acid aluminium lamination.This heat treatment temperature can be 400 ℃ to 800 ℃.This heat treated time is preferably 0.5 to 2 hour.
Because this method first joins positive active material particle in aluminum nitrate solution, in this aluminum nitrate solution, add again and can react with aluminium ion the phosphate solution that generates aluminum phosphate, thereby generate the continuous phosphoric acid aluminium lamination of one deck in positive active material particle surface original position.Because the aluminum nitrate solution of liquid phase and the positive active material particle of solid phase mix, can first make aluminium ion be coated on uniformly this positive active material particle surface, therefore the aluminum phosphate precipitation, being generated by aluminium ion after reaction in-situ also can more evenly be coated on this positive pole active particle surface.With first synthetic aluminum phosphate particle, the mode that makes aluminum phosphate particle be adsorbed onto positive active material particle surface by suction-operated is again compared, this method has been avoided, because the absorption of solid mixing generation is inhomogeneous, causing aluminum phosphate to be coated uneven phenomenon, is applicable to heavy industrialization application.In addition, this method can generate the even and continuous phosphoric acid aluminium lamination of a layer thickness at positive active material particle surface, but not by aluminum phosphate particle packing at positive active material particle surface.This phosphoric acid aluminium lamination can pass through ion in the electron transfer between isolated electrolyte and active material, thereby when completing the embedding of lithium ion and deviating from, avoid electrolyte to decompose under high voltage, therefore make this positive active material can under high voltage, there is better battery performance and Capacitance reserve performance.
Embodiment
The present embodiment specifically adopts said method to prepare described anode composite material particle by aluminum phosphate clad anode active material particle, and this anode composite material particle is applied to carry out in lithium ion battery performance test.This positive active material particle can be cobalt acid lithium or doping cobalt acid lithium particle, and the present embodiment is cobalt acid lithium particle.This aluminum phosphate-cobalt acid lithium composite material particle comprises cobalt acid lithium particle and is coated on the phosphoric acid aluminium lamination of this cobalt acid lithium particle surface.
In the preparation of this aluminum phosphate-cobalt acid lithium composite material particle, this aluminum nitrate solution is the solution that aluminum nitrate forms in ethanol.The volume of this aluminum nitrate solution is 30 milliliters, and molar concentration is 0.16 mol/L.The addition of this cobalt acid lithium particle is 100g.This phosphate solution is (NH
4)
2hPO
4the aqueous solution.In heat treatment temperature, be respectively 400 ℃, 500 ℃ and 600 ℃, phosphoric acid aluminium lamination accounts for and under the condition that the mass percent of gross mass is 1%, prepares 3 kinds of aluminum phosphates-cobalt acid lithium composite material particulate samples.In addition, in heat treatment temperature, be 600 ℃, phosphoric acid aluminium lamination accounts for and under the condition that the mass percent of gross mass is 1.5%, prepares a kind of aluminum phosphate-cobalt acid lithium composite material particulate samples.Refer to Fig. 2 and Fig. 3, in the sample obtaining, phosphoric acid aluminium lamination is coated on this cobalt acid lithium particle surface uniformly, by high magnification transmission electron microscope observing, can clearly see that this aluminum phosphate is that form with the material layer of even thickness covers this cobalt acid lithium particle surface.Respectively using these 4 kinds of samples as positive electrode active materials, mix with a certain proportion of conductive agent and binding agent and be coated on anode collection surface and make positive pole, using metal lithium sheet as negative pole, positive pole and negative pole are infiltrated and are assembled into lithium ion battery by barrier film interval and with electrolyte, carry out charge-discharge performance test.
Contrast experiment
For the anode composite material particle of preparing with the embodiment of the present invention contrasts, with the method for prior art, prepare another comparative sample, concrete steps are:
By (NH
4)
2hPO
4the aqueous solution mixes with aluminum nitrate aqueous solution, generates aluminum phosphate particle in water, forms dispersion liquid;
Cobalt acid lithium particle is dropped in this dispersion liquid, by the effect of adsorbing, make aluminum phosphate particle be adsorbed on cobalt acid lithium particle surface; And
At 600 ℃, this adsorption of heat treatment has the cobalt acid lithium particle of aluminum phosphate particle, obtains described comparative sample.Refer to Fig. 4 and Fig. 5, in the comparative sample of preparing by art methods, aluminum phosphate is that the form of particle is gathered in this cobalt acid lithium particle surface, and aluminum phosphate particle reunites, and makes to be coated inhomogeneous.
Using this comparative sample as positive electrode active materials, assembled battery under the condition identical with the present embodiment, carries out charge-discharge performance test.Also using the cobalt acid lithium particle that is not coated any material as positive electrode active materials, under the condition identical with the present embodiment, be assembled into lithium ion battery in addition, carry out charge-discharge performance test.Above-mentioned the present embodiment and contrast experiment's difference is only positive electrode active materials, and other battery condition and test condition are all identical.
Be coated with the positive active material particle of aluminum phosphate, owing to playing the aluminum phosphate of coating function and improved the surface texture of positive active material particle, to lithium ion, provide the de-platform of owing, play the effect on barrier layer simultaneously, effectively suppressing tetravalence cobalt ions reacts with electrolyte, stablize cobalt acid lithium structure, improved electrochemistry cycle performance.Refer to Fig. 6, above-mentioned 4 kinds of samples are carried out to constant current charge-discharge loop test under 0.5C electric current, the cut-ff voltage of this charging is 4.5V, and the cut-ff voltage of electric discharge is 2.7V.From figure, can find, the sample that adopts the inventive method to prepare, because aluminum phosphate can be coated cobalt acid alumina particles uniformly, under high voltage, charging still can have higher capacity and stable capability retention, capability retention after 50 circulations is all more than 90%, and specific capacity is 160mAh/g to 175mAh/g.And along with the raising of heat treatment temperature, the capacity of battery increases to some extent.The change of this aluminum phosphate percentage composition is little on the impact of battery capacity.Refer to Fig. 7, the circulation volume of this comparative sample and not coated cobalt acid lithium particulate samples sharply declines, capability retention after 50 circulations is all less than 85%, this is mainly because cobalt acid lithium particle is coated inhomogeneous or not coated, while making under high pressure to charge, cobalt acid lithium and electrolyte react and make the volume lowering of battery.
In addition, those skilled in the art also can do other and change in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention, within all should being included in the present invention's scope required for protection.
Claims (12)
1. a preparation method for anode composite material of lithium ion battery particle, it comprises:
Aluminum nitrate solution is provided;
Positive active material particle to be covered is added in this aluminum nitrate solution to the volume of this aluminum nitrate solution
With the volume ratio of this positive active material particle be 1:10 to 1:40, form muddy mixture;
Add this mixture to react phosphate solution, at this positive active material particle surface, form phosphorus
Acid aluminium lamination; And
This surface of heat treatment has the positive active material particle of phosphoric acid aluminium lamination.
2. the preparation method of anode composite material of lithium ion battery particle as claimed in claim 1, is characterized in that, this aluminum nitrate solution comprises solvent and is dissolved in the aluminum nitrate of this solvent.
3. the preparation method of anode composite material of lithium ion battery particle as claimed in claim 2, is characterized in that, this solvent is ethanol.
4. the preparation method of anode composite material of lithium ion battery particle as claimed in claim 1, is characterized in that, this phosphate solution comprises water and is dissolved in the phosphoric acid ammonia salt of water.
5. the preparation method of anode composite material of lithium ion battery particle as claimed in claim 4, is characterized in that, this phosphoric acid ammonia salt comprises one or more the mixing in ammonium dihydrogen phosphate, diammonium hydrogen phosphate and triammonium phosphate.
6. the preparation method of anode composite material of lithium ion battery particle as claimed in claim 1, is characterized in that, this heat treatment temperature is 400 ℃ to 800 ℃.
7. an anode composite material of lithium ion battery particle, prepared by the preparation method by anode composite material of lithium ion battery particle as claimed in claim 1, this anode composite material of lithium ion battery particle comprises positive active material particle, it is characterized in that, further comprise the phosphoric acid aluminium lamination that is coated on this positive active material particle surface, this aluminum phosphate layer thickness is even and continuous.
8. anode composite material of lithium ion battery particle as claimed in claim 7, is characterized in that, the mass percent of this phosphoric acid aluminium lamination in this anode composite material particle is 0.1% to 3%.
9. anode composite material of lithium ion battery particle as claimed in claim 7, is characterized in that, the mass percent of this phosphoric acid aluminium lamination in this anode composite material particle is 1% to 1.5%.
10. anode composite material of lithium ion battery particle as claimed in claim 7, is characterized in that, the thickness of this phosphoric acid aluminium lamination is 5 nanometer to 20 nanometers.
11. anode composite material of lithium ion battery particles as claimed in claim 7, is characterized in that, this phosphoric acid aluminium lamination is that original position is created on this positive active material particle surface.
12. anode composite material of lithium ion battery particles as claimed in claim 7, is characterized in that, the material of this positive active material particle is by chemical formula Li
xmn
1-ym
yo
2or Li
xfe
1-ym
ypO
4represent, 0.1≤x≤1.1 wherein, 0≤y≤0.9, M is at least one in Mn, Cr, Co, V, Ti, Al, Ga and Mg.
13. anode composite material of lithium ion battery particles as claimed in claim 12, is characterized in that, the material of this positive active material particle is stratiform cobalt acid lithium, layered lithium manganate or olivine-type LiFePO4.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010242522.4A CN102347473B (en) | 2010-08-02 | 2010-08-02 | Anode composite material particle of lithium ion battery and preparation method thereof |
| US13/092,135 US8568620B2 (en) | 2010-08-02 | 2011-04-21 | Electrode composite material, method for making the same, and lithium ion battery using the same |
| US13/106,996 US9054379B2 (en) | 2010-08-02 | 2011-05-13 | Electrode composite material, method for making the same, and lithium ion battery using the same |
| US13/107,006 US20120028120A1 (en) | 2010-08-02 | 2011-05-13 | Electrode composite material, method for making the same, and lithium ion battery using the same |
| US13/106,994 US9219276B2 (en) | 2010-08-02 | 2011-05-13 | Electrode composite material, method for making the same, and lithium ion battery using the same |
| US13/106,999 US8349494B2 (en) | 2010-08-02 | 2011-05-13 | Electrode composite material, method for making the same, and lithium ion battery using the same |
| US13/107,003 US9203087B2 (en) | 2010-08-02 | 2011-05-13 | Electrode composite material, method for making the same, and lithium ion battery using the same |
| US13/108,101 US8277979B2 (en) | 2010-08-02 | 2011-05-16 | Electrode composite material, method for making the same, and lithium ion battery using the same |
| JP2011146851A JP5491459B2 (en) | 2010-08-02 | 2011-06-30 | ELECTRODE COMPOSITE MATERIAL, ITS MANUFACTURING METHOD, AND LITHIUM ION BATTERY USING THE SAME |
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| CN102347473B true CN102347473B (en) | 2014-03-26 |
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447105B (en) * | 2010-10-14 | 2014-03-26 | 清华大学 | Lithium nickel oxide composite material and preparation method thereof and lithium ion battery |
| JP5491461B2 (en) * | 2010-10-15 | 2014-05-14 | ツィンファ ユニバーシティ | ELECTRODE COMPOSITE MATERIAL, ITS MANUFACTURING METHOD, AND LITHIUM ION BATTERY USING THE SAME |
| CN102832388B (en) * | 2012-09-29 | 2015-04-15 | 上海空间电源研究所 | Lithium-ion battery positive material coated with metal phosphate on surface and preparation method of lithium-ion battery positive material |
| JP2015099659A (en) * | 2013-11-18 | 2015-05-28 | 旭化成株式会社 | Positive electrode active material, positive electrode, and nonaqueous electrolyte secondary battery |
| JP6387227B2 (en) * | 2013-11-18 | 2018-09-05 | 日揮触媒化成株式会社 | Positive electrode active material, positive electrode, and nonaqueous electrolyte secondary battery |
| CN104393281B (en) * | 2014-12-03 | 2017-01-25 | 梁贺君 | Preparation method of manganese, nickel and lithium cathode material |
| CN104538612B (en) * | 2014-12-20 | 2017-03-08 | 贵州中伟正源新材料有限公司 | A kind of preparation method of nickel aluminium lithium anode material |
| CN106898735B (en) * | 2015-12-17 | 2019-06-14 | 江苏华东锂电技术研究院有限公司 | The method for coating of positive electrode active materials covering liquid and preparation method thereof and positive electrode active materials |
| CN106898734B (en) * | 2015-12-17 | 2019-06-14 | 江苏华东锂电技术研究院有限公司 | The method for coating of positive electrode active materials covering liquid and preparation method thereof and positive electrode active materials |
| CN107275579B (en) * | 2016-04-08 | 2019-12-13 | 江苏华东锂电技术研究院有限公司 | Preparation method of positive electrode active material coating liquid and coating method of positive electrode active material |
| JP6861565B2 (en) | 2016-09-16 | 2021-04-21 | 信越化学工業株式会社 | Negative electrode active material, mixed negative electrode active material, and method for manufacturing negative electrode active material |
| WO2018051710A1 (en) * | 2016-09-16 | 2018-03-22 | 信越化学工業株式会社 | Negative electrode active substance, mixed negative electrode active substance material and method for producing negative electrode active substance |
| CN107240698A (en) * | 2017-04-20 | 2017-10-10 | 深圳市沃特玛电池有限公司 | A kind of method of modifying of positive electrode |
| CN108963197A (en) | 2017-05-19 | 2018-12-07 | 宁德时代新能源科技股份有限公司 | Preparation method of modified positive electrode active material |
| CN111092213B (en) * | 2019-12-31 | 2023-01-31 | 河南电池研究院有限公司 | Composite positive electrode material of lithium ion battery and preparation method thereof |
| WO2024062744A1 (en) * | 2022-09-22 | 2024-03-28 | 住友金属鉱山株式会社 | Positive electrode material for lithium ion secondary battery, production method therefor, positive electrode for lithium ion secondary battery, and lithium ion secondary battery |
| CN117254020B (en) * | 2023-11-13 | 2024-03-08 | 江门市科恒实业股份有限公司 | Aluminum phosphate coated calcium-doped sodium ion battery positive electrode material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1423353A (en) * | 2001-09-05 | 2003-06-11 | 三星Sdi株式会社 | Active material for cell and preparing method |
| CN1681145A (en) * | 2004-04-05 | 2005-10-12 | 中国科学院物理研究所 | Negative electrode active material and use of secondary lithium battery |
| CN101150190A (en) * | 2007-10-30 | 2008-03-26 | 天津巴莫科技股份有限公司 | Anode material zirconium and phosphor adulterated lithium cobaltate of lithium ion secondary battery and its making method |
| CN101160684A (en) * | 2005-03-02 | 2008-04-09 | U芝加哥阿谷尼有限公司 | Novel redox shuttles for overcharge protection of lithium batteries |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7135251B2 (en) * | 2001-06-14 | 2006-11-14 | Samsung Sdi Co., Ltd. | Active material for battery and method of preparing the same |
| JP3896058B2 (en) * | 2001-09-05 | 2007-03-22 | 三星エスディアイ株式会社 | Battery active material and method for producing the same |
| US8367253B2 (en) * | 2006-02-02 | 2013-02-05 | U Chicago Argonne Llc | Lithium-ion batteries with intrinsic pulse overcharge protection |
| JP5223166B2 (en) * | 2006-02-07 | 2013-06-26 | 日産自動車株式会社 | Battery active material and secondary battery |
| JP5199844B2 (en) * | 2008-11-21 | 2013-05-15 | 株式会社日立製作所 | Lithium secondary battery |
-
2010
- 2010-08-02 CN CN201010242522.4A patent/CN102347473B/en active Active
-
2011
- 2011-06-30 JP JP2011146851A patent/JP5491459B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1423353A (en) * | 2001-09-05 | 2003-06-11 | 三星Sdi株式会社 | Active material for cell and preparing method |
| CN1681145A (en) * | 2004-04-05 | 2005-10-12 | 中国科学院物理研究所 | Negative electrode active material and use of secondary lithium battery |
| CN101160684A (en) * | 2005-03-02 | 2008-04-09 | U芝加哥阿谷尼有限公司 | Novel redox shuttles for overcharge protection of lithium batteries |
| CN101150190A (en) * | 2007-10-30 | 2008-03-26 | 天津巴莫科技股份有限公司 | Anode material zirconium and phosphor adulterated lithium cobaltate of lithium ion secondary battery and its making method |
Non-Patent Citations (1)
| Title |
|---|
| 韦旎妮.锂离子电池Li-Co-O体系正极材料的合成、改性及电化学性能研究.《中国优秀博硕士学位论文全文数据库（硕士）工程科技Ⅱ辑》.2005,(第8期), * |
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| JP5491459B2 (en) | 2014-05-14 |
| CN102347473A (en) | 2012-02-08 |
| JP2012033481A (en) | 2012-02-16 |
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