CN102646829A - Preparation method of lithium manganese silicate positive pole material - Google Patents
Preparation method of lithium manganese silicate positive pole material Download PDFInfo
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- CN102646829A CN102646829A CN2012101466264A CN201210146626A CN102646829A CN 102646829 A CN102646829 A CN 102646829A CN 2012101466264 A CN2012101466264 A CN 2012101466264A CN 201210146626 A CN201210146626 A CN 201210146626A CN 102646829 A CN102646829 A CN 102646829A
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Abstract
The invention relates to a lithium ion battery positive pole material, particularly a preparation method of a lithium manganese silicate (Li2MnSiO4) positive pole material for lithium ion batteries. The preparation method comprises the following steps: adding manganese salt, lithium salt and nano silicon dioxide or ethyl orthosilicate as a reactive silicon source into an organic solvent or a mixed solution of an organic solvent and water; adding organic acid or organic amine into the solution as a pH regulator; and carrying out solvothermal reaction on the solution, washing the product, filtering, and drying to obtain the lithium manganese silicate material. The method provided by the invention can be carried out under common hydrothermal reaction kettle conditions without pressurization, thereby enhancing the safety coefficient on the premise of greatly lowering the production cost, and being convenient for industrialized large-scale production.
Description
Technical field
The present invention relates to a kind of anode material for lithium-ion batteries, especially relate to a kind of lithium ion battery with manganese silicate of lithium (Li
2MnSiO
4) preparation method of positive electrode.
Background technology
Li
2MnSiO
4As the new type lithium ion battery positive electrode; Have theoretical specific capacity height, Stability Analysis of Structures, cycle performance is good, cheap and advantages of environment protection; Be considered to have future the anode material for lithium-ion batteries of competitiveness, and be expected to be widely used in lithium-ion-power cell.Its traditional preparation method mainly contains high temperature solid-state method, sol-gel process and hydro thermal method etc., but there is the problem that synthesis temperature is high, the cycle is long or material purity is not high and degree of crystallinity is bad in these methods.Employing microwave-solvent-thermal methods such as T.Muraliganth in 2010 synthesize Li under 300 ℃, 30bar pressure
2MnSiO
4Material (Microwave-Solvothermal Synthesis of Nanostructured Li
2MSiO
4/ C (M=Mn and Fe) Cathodes for Lithium-Ion Batteries [J] .Chem.Mater., 2010,22 (20), 5754 – 5761), but degree of crystallinity is relatively poor, need carry out double sintering; Recently, solvent-thermal method (300 ℃/pressure of reaction temperature 38MPa) synthesizes the Li of high-purity, better crystallinity degree under the employing harsh conditions such as Devaraju M.Kempaiah
2MnSiO
4Material (Controlled synthesis of nanocrystalline Li2MnSiO4 particles for high capacity cathode application in lithium-ion batteries [J] Chem.Commun.; 2012; 48; 2698 – 2700), but this method have severe reaction conditions, be difficult to control and problems such as poor reproducibility.
Summary of the invention
The present invention is directed to synthetic method of the prior art and be difficult to prepare the technical deficiency of the manganese silicate of lithium material of purity height, better crystallinity degree, provide a kind of under 150 ~ 220 ℃ temperate condition, prepare the method for manganese silicate of lithium positive electrode through solvent-thermal method.
The present invention provides a kind of lithium ion battery with manganese silicate of lithium (Li
2MnSiO
4) preparation method of positive electrode, concrete steps are following:
1) nanometer grade silica or the tetraethoxysilane in the silicon source of adding manganese salt, lithium salts and conduct reaction in the mixed solution of organic solvent or organic solvent and water;
2) in step 1) gained solution, add organic acid or organic amine as pH value conditioning agent;
3) with step 2) gained solution carries out solvent thermal reaction, and products therefrom washs, filters, is drying to obtain the manganese silicate of lithium material.
Preferably, the charging sequence of each raw material does in the said step 1), adds manganese salt earlier, adds lithium salts again, adds silicon dioxide or tetraethoxysilane again, all tackles solution after each raw material adds and fully stirs and mix.
Preferably, the organic solvent in the said step 1) is ethanol or ethylene glycol, and the mixed solution of organic solvent and water is the mixed solution of second alcohol and water or the mixed solution of ethylene glycol and water.
Preferably, said organic solvent with the mixed volume ratio of water is: 8-10:1.
Preferably, the proportioning in manganese salt, lithium salts and silicon source is pressed the mol ratio calculating of Mn element, Li element and Si element in the said step 1), and the mol ratio of Mn element, Li element and Si element is: 0.7-1.3:1.4-2.6:0.7-1.3.
Preferably, the mol ratio of Mn element, Li element and Si element is in the said step 1): 0.9-1.1:0.9-1.1:0.9-1.1.
Preferably, those skilled in the art can judge the use amount of the mixed solution of said organic solvent, organic solvent and water voluntarily according to known technology.
Preferably, said volume of organic solvent (ml) is 10:8-14 with the ratio of said silicon source, manganese salt, lithium salts weight sum (g).
Preferably, the volume of the mixed solution of organic solvent and water (ml) is 10:8-14 with the ratio of said silicon source, manganese salt, lithium salts weight sum (g).
Preferably, manganese salt is one or more the mixture in manganese chloride, manganese acetate, manganese carbonate or the manganese sulfate in the said step 1).
Preferably, lithium salts is a lithium hydroxide in the said step 1).
Preferably, organic acid is one or more the mixture in formic acid, acetate, citric acid or the oxalic acid said step 2).
Preferably, organic amine is an ethylenediamine said step 2).
Preferably, the reaction temperature of the solvent thermal reaction in the said step 3) is 150 ~ 220 ℃, and the reaction time is 10 ~ 48 hours.
Preferably, baking temperature is 90 ~ 150 ℃ in the said step 3).
Preferably, the said step 2) pH value=9-12 of the solution of gained.
The temperature of said drying steps is high, time length helps fully removing the adsorption solvent in the material.
Second aspect present invention provides a kind of lithium ion battery to use the manganese silicate of lithium positive electrode, is made by above-described preparation method.
The present invention adopts solvent thermal, and pH value, reaction temperature and the reaction time of system prepare the manganese silicate of lithium material after mixing through the control initial reaction product.Can come controlled target product pattern through adopting different silicon sources and different pH value conditioning agents in the reaction system.Temperature is high in the solvent thermal reaction of the present invention can shorten the reaction time, and the reaction time deficiency can cause part intermediate product such as Mn (OH) in addition
2Deng and other impurity residual; Being aided with the magnetic agitation powder particle in the solvent thermal reaction process can be more carefully more even.
The present invention is directed to the synthetic manganese silicate of lithium material of existing high temperature solid-state method, sol-gal process method, hydro thermal method and have the problem that purity is not high, degree of crystallinity is bad or reaction condition is too harsh, provide a kind of under 150 ~ 220 ℃ of temperate conditions solvent-thermal method prepare manganese silicate of lithium positive electrode method.This method cost of material is cheap, and synthesis route is simple, and reaction condition is easy to control, and target product purity is high, and degree of crystallinity is high, and granule-morphology, fineness and particle size distribution can be regulated and control.Especially method provided by the present invention only needs under common hydrothermal reaction kettle condition, can carry out, and need not pressurization, under the prerequisite that has significantly reduced production cost, has more improved coefficient of safety, is convenient to large-scale industrialization production.
Description of drawings
Fig. 1 is the Li of the present invention's preparation
2MnSiO
4The X ray diffracting spectrum of material, test condition: the Dutch PHILIP Panalytical X-pert of company powder diffractometer (CuK alpha ray
), operating voltage 40kV, operating current are 50mA; Test parameter for be respectively angle range (°): 5 °-80 °; Step size (°): 0.0167 °; Time per step (s): 5s.
Fig. 2 is that the X ray diffracting spectrum of 220 ℃ of following each stage product of solvent thermal reaction: a is solvent thermal reaction 10h gained intermediate state mixture (Li
2MnSiO
4With impurity coexistence) X ray diffracting spectrum; B is solvent thermal reaction 20h product (Li
2MnSiO
4With impurity coexistence) X ray diffracting spectrum; C is solvent thermal reaction 48h product (Li
2MnSiO
4Pure phase) X ray diffracting spectrum c.
Embodiment
Further set forth the present invention below in conjunction with specific embodiment, should be understood that these embodiment only are used to the present invention is described and are not used in restriction protection scope of the present invention.
Embodiment 1
Get 9ml ethanol and 1ml water is mixed with mixed solution, add the 5.200g teos solution, stir; The MnCl that adds 4.950g
2.4H
2O stirs; The LiOH of 2.100g is added in the solution of above-mentioned steps preparation, stir; With acetate and ethylenediamine the pH value is adjusted to 10, the solution for preparing is at last inserted in the agitated reactor, 220 ℃ of following solvent thermal reactions 48 hours, and water cyclic washing 5 times, the alcohol washed twice is filtered, and is drying to obtain the manganese silicate of lithium material under 105 ℃.
The Li of gained
2MnSiO
4The X ray diffracting spectrum of material is as shown in Figure 1, test condition: the Dutch PHILIP Panalytical X-pert of company powder diffractometer (CuK alpha ray
), operating voltage 40kV, operating current are 50mA; Test parameter for be respectively angle range (°): 5 °-80 °; Step size (°): 0.0167 °; Time per step (s): 5s.
The X ray diffracting spectrum of each time period product is as shown in Figure 2 in the course of reaction, and wherein a is solvent thermal reaction 10h gained intermediate state mixture (Li
2MnSiO
4With impurity coexistence) X ray diffracting spectrum; B is solvent thermal reaction 20h product (Li
2MnSiO
4With impurity coexistence) X ray diffracting spectrum; C is solvent thermal reaction 48h product (Li
2MnSiO
4Pure phase) X ray diffracting spectrum c.
Embodiment 2
Get 9ml ethanol and 1ml water is mixed with mixed solution, add the 1.500g nanometer grade silica, stir; The MnCl that adds 4.950g
2.4H
2O stirs; The LiOH of 2.100g is added in the solution of above-mentioned steps preparation, stir; With acetate and ethylenediamine the pH value is adjusted to 12, the solution for preparing is at last inserted in the agitated reactor, 220 ℃ of following solvent thermal reactions 48 hours, and water cyclic washing 5 times, the alcohol washed twice is filtered, and is drying to obtain the manganese silicate of lithium material under 105 ℃.
Embodiment 3
Get 9ml ethanol and 1ml water is mixed with mixed solution, add the 5.200g teos solution, stir; The C that adds 6.700g
4H
6O
4Mn stirs; The LiOH of 2.100g is added in the solution of above-mentioned steps preparation, stir; With acetate and ethylenediamine the pH value is adjusted to 9, the solution for preparing is at last inserted in the agitated reactor, 220 ℃ of following solvent thermal reactions 48 hours, and water cyclic washing 5 times, the alcohol washed twice is filtered, and is drying to obtain the manganese silicate of lithium material under 105 ℃.
Embodiment 4
Get 9ml ethanol and 1ml water is mixed with mixed solution, add the 5.200g teos solution, stir; The MnCO that adds 2.875g
3, stir; The LiOH of 2.100g is added in the solution of above-mentioned steps preparation, stir; With acetate and ethylenediamine the pH value is adjusted to 11, the solution for preparing is at last inserted in the agitated reactor, 220 ℃ of following solvent thermal reactions 48 hours, and water cyclic washing 5 times, the alcohol washed twice is filtered, and is drying to obtain the manganese silicate of lithium material under 105 ℃.
Embodiment 5
Get 9ml ethanol and 1ml water is mixed with mixed solution, add the 5.200g teos solution, stir; The MnSO that adds 4.225g
4, stir; The LiOH of 2.100g is added in the solution of above-mentioned steps preparation, stir; With acetate and ethylenediamine the pH value is adjusted to 12, the solution for preparing is at last inserted in the agitated reactor, 220 ℃ of following solvent thermal reactions 48 hours, and water cyclic washing 5 times, the alcohol washed twice is filtered, and is drying to obtain the manganese silicate of lithium material under 105 ℃.
Embodiment 6
Get the 10ml ethanolic solution, add the 5.200g teos solution, stir; The MnCl that adds 4.950g
2.4H
2O stirs; The LiOH of 2.100g is added in the solution of above-mentioned steps preparation, stir; With acetate and ethylenediamine the pH value is adjusted to 9, the solution for preparing is at last inserted in the agitated reactor, 220 ℃ of following solvent thermal reactions 48 hours, and water cyclic washing 5 times, the alcohol washed twice is filtered, and is drying to obtain the manganese silicate of lithium material under 105 ℃.
Embodiment 7
Get the 10ml ethanolic solution, add the 1.500g nanometer grade silica, stir; The MnCl that adds 4.950g
2.4H
2O stirs; The LiOH of 2.100g is added in the solution of above-mentioned steps preparation, stir; With acetate and ethylenediamine the pH value is adjusted to 10, the solution for preparing is at last inserted in the agitated reactor, 220 ℃ of following solvent thermal reactions 48 hours, and water cyclic washing 5 times, the alcohol washed twice is filtered, and is drying to obtain the manganese silicate of lithium material under 105 ℃.
Embodiment 8
Get 9ml ethylene glycol and 1ml water is mixed with mixed solution, add the 5.200g teos solution, stir; The MnCl that adds 4.950g
2.4H
2O stirs; The LiOH of 2.100g is added in the solution of above-mentioned steps preparation, stir; With citric acid and ethylenediamine the pH value is adjusted to 8, the solution for preparing is at last inserted in the agitated reactor, 180 ℃ of following solvent thermal reactions 10 hours, and water cyclic washing 5 times, the alcohol washed twice is filtered, and is drying to obtain the manganese silicate of lithium material under 90 ℃.
Embodiment 9
Get the 10ml ethylene glycol solution, add the 1.500g nanometer grade silica, stir; The MnCl that adds 4.950g
2.4H
2O stirs; The LiOH of 2.100g is added in the solution of above-mentioned steps preparation, stir; With oxalic acid and ethylenediamine the pH value is adjusted to 7.5, the solution for preparing is at last inserted in the agitated reactor, 140 ℃ of following solvent thermal reactions 20 hours, and water cyclic washing 5 times, the alcohol washed twice is filtered, and is drying to obtain the manganese silicate of lithium material under 150 ℃.
Above case description is for technical characterstic of the present invention and thinking are described, its purpose is to let the relevant speciality technical staff can understand content of the present invention and implements in view of the above, can not limit protection scope of the present invention with this.All equivalence changes of doing based on technical characterstic of the present invention and thinking or modify all should be encompassed within protection scope of the present invention.
Claims (12)
1. a lithium ion battery is with the preparation method of manganese silicate of lithium positive electrode, and concrete steps are following:
1) nanometer grade silica or the tetraethoxysilane in the silicon source of adding manganese salt, lithium salts and conduct reaction in the mixed solution of organic solvent or organic solvent and water;
2) in step 1) gained solution, add organic acid or organic amine as pH value conditioning agent;
3) with step 2) gained solution carries out solvent thermal reaction, and products therefrom washs, filters, is drying to obtain the manganese silicate of lithium material.
2. a kind of lithium ion battery as claimed in claim 1 is with the preparation method of manganese silicate of lithium positive electrode; It is characterized in that; Organic solvent in the said step 1) is ethanol or ethylene glycol, and the mixed solution of organic solvent and water is the mixed solution of second alcohol and water or the mixed solution of ethylene glycol and water.
3. a kind of lithium ion battery as claimed in claim 1 is with the preparation method of manganese silicate of lithium positive electrode; It is characterized in that; The proportioning in manganese salt, lithium salts and silicon source is pressed the mol ratio calculating of Mn element, Li element and Si element in the said step 1), and the mol ratio of Mn element, Li element and Si element is: 0.7-1.3:1.4-2.6:0.7-1.3.
4. a kind of lithium ion battery as claimed in claim 3 is characterized in that with the preparation method of manganese silicate of lithium positive electrode the mol ratio of said Mn element, Li element and Si element is: 0.9-1.1:1.8-2.2:0.9-1.1.
5. a kind of lithium ion battery as claimed in claim 1 is characterized in that with the preparation method of manganese silicate of lithium positive electrode, and manganese salt is one or more the mixture in manganese chloride, manganese acetate, manganese carbonate or the manganese sulfate in the said step 1).
6. a kind of lithium ion battery as claimed in claim 1 is characterized in that with the preparation method of manganese silicate of lithium positive electrode lithium salts is a lithium hydroxide in the said step 1).
7. a kind of lithium ion battery as claimed in claim 1 is characterized in that with the preparation method of manganese silicate of lithium positive electrode, said step 2) in organic acid be one or more the mixture in formic acid, acetate, citric acid or the oxalic acid.
8. a kind of lithium ion battery as claimed in claim 1 is characterized in that with the preparation method of manganese silicate of lithium positive electrode, said step 2) in organic amine be ethylenediamine.
9. a kind of lithium ion battery as claimed in claim 1 is characterized in that with the preparation method of manganese silicate of lithium positive electrode the reaction temperature of the solvent thermal reaction in the said step 3) is 150 ~ 220 ℃, and the reaction time is 10 ~ 48 hours.
10. a kind of lithium ion battery as claimed in claim 1 is characterized in that with the preparation method of manganese silicate of lithium positive electrode baking temperature is 90 ~ 150 ℃ in the said step 3).
11., it is characterized in that said step 2 like the preparation method of the arbitrary described a kind of lithium ion battery of claim 1-10 with the manganese silicate of lithium positive electrode) the pH value=9-12 of the solution of gained.
12. a lithium ion battery is used the manganese silicate of lithium positive electrode, is made by the arbitrary described preparation method of claim 1-12.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545510A (en) * | 2013-09-30 | 2014-01-29 | 上海维凯化学品有限公司 | Lithium manganese silicate type positive electrode material of lithium ion battery and preparation method thereof |
| CN105244498A (en) * | 2015-08-31 | 2016-01-13 | 无锡市嘉邦电力管道厂 | Preparation method for graphene lithium manganese silicate cathode material |
| CN105845921A (en) * | 2016-05-23 | 2016-08-10 | 无锡市嘉邦电力管道厂 | Preparation method for graphene Li2MnSiO4 positive electrode material |
| CN105895883A (en) * | 2016-06-03 | 2016-08-24 | 清华大学深圳研究生院 | Composite lithium manganese silicate cathode material and preparation method thereof |
| CN106784616A (en) * | 2016-12-06 | 2017-05-31 | 广州汽车集团股份有限公司 | The self-assembly preparation method thereof and positive electrode composition of spherical manganese silicate of lithium composite |
| WO2018036183A1 (en) * | 2016-08-26 | 2018-03-01 | 北京大学深圳研究生院 | Catalyst for water decomposition, preparation method therefor and use thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877400A (en) * | 2010-02-09 | 2010-11-03 | 厦门大学 | Method for preparing lithium-ion battery anode material lithium manganese silicate |
-
2012
- 2012-05-11 CN CN201210146626.4A patent/CN102646829B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877400A (en) * | 2010-02-09 | 2010-11-03 | 厦门大学 | Method for preparing lithium-ion battery anode material lithium manganese silicate |
Non-Patent Citations (2)
| Title |
|---|
| CHUTCHAMON SIRISOPANAPORN: "Polymorphism in Li 2 (Fe,Mn)SiO 4 : A combined diffraction and NMR study", 《JOURNAL OF MATERIALS CHEMISTRY》 * |
| 程琥等: "锂离子电池正极材料Li2MnSiO4固体贺词共振谱研究", 《电化学》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545510A (en) * | 2013-09-30 | 2014-01-29 | 上海维凯化学品有限公司 | Lithium manganese silicate type positive electrode material of lithium ion battery and preparation method thereof |
| CN103545510B (en) * | 2013-09-30 | 2015-12-09 | 上海维凯光电新材料有限公司 | Lithium manganese silicate type positive electrode material of lithium ion battery and preparation method thereof |
| CN105244498A (en) * | 2015-08-31 | 2016-01-13 | 无锡市嘉邦电力管道厂 | Preparation method for graphene lithium manganese silicate cathode material |
| CN105845921A (en) * | 2016-05-23 | 2016-08-10 | 无锡市嘉邦电力管道厂 | Preparation method for graphene Li2MnSiO4 positive electrode material |
| CN105895883A (en) * | 2016-06-03 | 2016-08-24 | 清华大学深圳研究生院 | Composite lithium manganese silicate cathode material and preparation method thereof |
| CN105895883B (en) * | 2016-06-03 | 2018-05-29 | 清华大学深圳研究生院 | Complex silicate manganese lithium anode material and preparation method thereof |
| WO2018036183A1 (en) * | 2016-08-26 | 2018-03-01 | 北京大学深圳研究生院 | Catalyst for water decomposition, preparation method therefor and use thereof |
| CN106784616A (en) * | 2016-12-06 | 2017-05-31 | 广州汽车集团股份有限公司 | The self-assembly preparation method thereof and positive electrode composition of spherical manganese silicate of lithium composite |
| CN106784616B (en) * | 2016-12-06 | 2019-06-25 | 广州汽车集团股份有限公司 | The self-assembly preparation method thereof and positive electrode composition of spherical manganese silicate of lithium composite material |
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Effective date of registration: 20161123 Address after: 215000 Suzhou Industrial Park, Suzhou, Qing Xin Road, No., southeast corner, layer two, 28 Patentee after: Suzhou GCL Energy Technology Development Co Ltd Address before: 224007 Yancheng City Economic Development Zone Yancheng economic and Technological Development Zone, Songjiang Road, room 18, No. 823, room Patentee before: New materials (Yancheng) Co., Ltd. GCL power |