CN104779384A - Preparation method of lithium ion battery negative electrode materials - Google Patents

Preparation method of lithium ion battery negative electrode materials Download PDF

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CN104779384A
CN104779384A CN201510121098.0A CN201510121098A CN104779384A CN 104779384 A CN104779384 A CN 104779384A CN 201510121098 A CN201510121098 A CN 201510121098A CN 104779384 A CN104779384 A CN 104779384A
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reaction
mno
micro passage
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hco
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CN104779384B (en
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文衍宣
苏静
梁浩
吕小艳
龙云飞
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Guangxi University
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • 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
    • H01M4/502—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese for non-aqueous cells
    • 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
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • 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
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • 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 preparation method of lithium ion battery negative electrode materials. The preparation method comprises the following steps: (1) preparing a precursor MnCO3: injecting a MnSO4 solution and a NH4HCO3 solution into two inlets of a micro-channel reactor respectively, wherein the concentration ratio of the MnSO4 solution to the NH4HCO3 solution is 1:1-2.5, the two solutions collide in the intersection node of the two inlets of the micro-channel reactor and carry out rapid co-precipitation reactions, and the reaction products flow out of the micro-channel reactor from the outlet of the micro-channel reactor; collecting the reaction products, filtering, washing the reaction products by deionized water, and carrying out rotary evaporation in water to obtain the MnCO3 precursor; (2) preparing MnO/C: mixing the prepared MnCO3 with a carbon source according to a mass ratio of 1:0.15-0.4, and burning the mixture at a temperature of 400 to 600 DEG C in a nitrogen atmosphere for 3 to 8 hours to obtain MnO/C. The preparation method has a simple technology, greatly reduces the reaction time, is suitable for massive production, and improves the performance of the materials.

Description

A kind of method preparing lithium ion battery negative material
Technical field
The present invention relates to field of lithium ion battery cathode material preparation, particularly a kind of method preparing lithium ion battery negative material.
Background technology
In recent years, the production technology of lithium ion battery has had significant progress.The update of anode material for lithium-ion batteries is very frequent, and the LiFePO4 used from initial cobalt acid lithium, nickle cobalt lithium manganate up till now electric bicycle, the performance of material is become better and better.But the negative material of commercial lithium ion battery is then always based on material with carbon element.Along with the development of positive electrode, many deficiencies such as the first charge-discharge efficiency that material with carbon element exists is low, specific capacity is low, organic solvent embeds altogether start to restrict the development of whole lithium ion battery.
And MnO is as a kind of transition metal oxide, the large (5.43g/cm of its specific capacity high (theoretical capacity 756mAh/g is 2 times of graphite), density 3), low (the 1.032V vs.Li of electromotive force +/ Li), aboundresources, environmental friendliness, be the very promising negative material of one.But conductivity is low, in charge and discharge process change in volume greatly, the low practical application limiting it of coulombic efficiency first.At present, preparation MnO particle mainly contains hydro-thermal (solvent heat) method, liquid phase oxidation reducing process, manganese organic matter pyrolysis method, infusion process, electrodeposition process etc., more or less there are some shortcomings in said method, as to temperature or pressure requirements high, reaction time is long, productive rate is low, and product grain is unequal.And particle prepared by the precipitation method has higher chemical uniformity, particle size distribution is narrow.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of method preparing lithium ion battery negative material, thus it is high to reaction condition requirement to overcome existing preparation MnO particle, product grain is uneven, and conductivity is low, the shortcoming that preparation cost is high.
For achieving the above object, the invention provides a kind of method preparing lithium ion battery negative material, comprise the following steps: 1) prepare presoma MnCO 3: be the MnSO of 1:1-2.5 by concentration ratio 4and NH 4hCO 3two kinds of reaction solutions inject two imports of micro passage reaction respectively, described two kinds of solution carry out colliding at the crossed node place of two imports of described micro passage reaction and Rapid coprecipitation reaction occur, gained product flows out through the outlet of described micro passage reaction, described product is collected, filter, and after spending deionized water in water rotary evaporation, obtain MnCO 3presoma; 2) prepare MnO/C: by step 1) prepared by MnCO 3with carbon source in mass ratio for 1:0.15-0.4 mixes, be calcine 3-8 hour under the nitrogen environment of 400-600 DEG C in temperature after mixing, obtain MnO/C.
Preferably, described by MnSO 4and NH 4hCO 3two kinds of reaction solutions enter two imports of micro passage reaction respectively by infusion.
Preferably, described by MnSO 4and NH 4hCO 3two kinds of reaction solutions enter two imports of micro passage reaction flow velocity respectively by infusion is identical.
Preferably, described flow velocity is 20-70mL/min.
Preferably, described micro passage reaction is T-shaped micro passage reaction.
Preferably, described carbon source is sucrose, starch, glucose, ascorbic acid wherein one or more.
Preferably, described MnSO 4the concentration of reaction solution is 0.1-0.2mol/L.
Preferably, described NH 4hCO 3the concentration of reaction solution is 0.2-0.5mol/L.
Compared with prior art, the present invention has following beneficial effect:
1. the preparation method in the present invention is compared with the negative material of current commercial Application, and MnO theoretical specific capacity high (756mAh/g), material source enriches, and security performance is good, cheap.The surface coated carbon of MnO can improve the conductivity of metal oxide, promotes dispersion of materials, increases the specific area of material, alleviates the volumetric expansion of material, accelerates the load transfer speed of electrochemical reaction.
2. by MnCO that micro passage reaction obtains 3presoma particle diameter little (1-2 micron), dispersed and uniformity is good.
3. the carbon source that calcination process uses is sucrose, the material that starch etc. are cheap, uses high temperature solid-state method to carry out the coated applicable large-scale production of carbon.
4. utilize micro passage reaction two step to prepare MnO/C technique simple, substantially reduce the reaction time, be applicable to large-scale production.Under MnO/C product room temperature, 1C discharge capacity can meet or exceed theoretical specific capacity, and cyclical stability is better.
Accompanying drawing explanation
Fig. 1 is according to the schematic flow sheet preparing presoma in T-shaped micro passage reaction of the present invention.
Fig. 2 is the XRD figure according to the MnO/C product of preparation in embodiments of the invention 1.
Fig. 3 is the chemical property of the MnO/C product according to embodiments of the invention 1 preparation.
Fig. 4 is the MnCO prepared according to embodiments of the invention 2 3the SEM figure of presoma.
Fig. 5 is the SEM figure of the MnO/C product according to embodiments of the invention 2 preparation.
Fig. 6 is the chemical property of the MnO/C product according to embodiments of the invention 2 preparation.
Fig. 7 is the MnCO prepared according to embodiments of the invention 3 3the SEM figure of presoma.
Fig. 8 is the SEM figure of the MnO/C product according to embodiments of the invention 3 preparation.
Fig. 9 is the chemical property of the MnO/C product according to embodiments of the invention 3 preparation.
Figure 10 is the chemical property of the MnO/C product according to embodiments of the invention 4 preparation.
Figure 11 is the chemical property of the MnO/C product according to embodiments of the invention 5 preparation.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
According to a kind of method preparing lithium ion battery negative material of the specific embodiment of the invention, comprise the following steps:
1) presoma MnCO is prepared 3:
As shown in Figure 1, be the MnSO of 1:1-2.5 by concentration ratio 4reaction solution 2 and NH 4hCO 3reaction solution 3 injects two imports (5,6) of micro passage reaction 1 respectively by pump 4, and during injection, the flow velocity of two kinds of reaction solutions is identical, and flow velocity is preferably 20-70mL/min.Solution carries out colliding at crossed node 7 place of two imports (5,6) of micro passage reaction 1 and Rapid coprecipitation reaction occurs, gained product flows out through the outlet 8 of micro passage reaction, product is collected, filter, and after spending deionized water in water rotary evaporation, obtain MnCO 3presoma;
Wherein, micro passage reaction in this embodiment is T-shaped micro passage reaction, its by flowage structure of this reactor as shown in Figure 1, in microreactor microchannel width and the degree of depth smaller, be only hundreds of micron, diffusion length between reactant is shortened greatly, mass transfer velocity is fast, and reactant gets final product the raw coprecipitation reaction of abundant hybrid concurrency in the process of flowing in the short time, the presoma particle diameter obtained is little, dispersed and uniformity is good, thus make the particle of the MnO/C prepared more even.
MnCO 3precursor power:
2NH 4HCO 3+MnSO 4→MnCO 3↓+(NH 4) 2SO 4+CO 2↑+H 2O
2) MnO/C is prepared:
By step 1) prepared by MnCO 3with carbon source in mass ratio for 1:0.15-0.4 mixes, be calcine 3-8 hour under the nitrogen environment of 400-600 DEG C in temperature after mixing, obtain MnO/C, in this embodiment, carbon source can select sucrose, starch, glucose, ascorbic acid wherein one or more, by reduce grain diameter and overcome that the conductivity of MnO is low in the method for Surface coating electric conducting material (as carbon, carbon nano-tube, carbon fiber, Graphene, graphite, metal, titanium nitride etc.), change in volume greatly in charge and discharge process, coulombic efficiency is low first shortcoming.
Prepared by MnO:
, introduce several embody rule embodiment below, to facilitate the understanding of the preparation method to the embodiment of the present invention:
Embodiment 1:
0.2mol/L NH 4hCO 3with 0.2mol/L MnSO 4inject T-shaped micro passage reaction import with pump with flow velocity 50mL/min respectively, collide at Nodes solution and Rapid coprecipitation reaction occurs, flowing out through outlet after reaction channel, collecting reaction product, filter, and after spending deionized water in water rotary evaporation, obtain MnCO 3presoma; By the MnCO of sucrose and preparation 3presoma is 0.15:1 Homogeneous phase mixing in mass ratio, at nitrogen atmosphere, calcines 6h under 450 degrees Celsius, obtains MnO/C product.The cubic system MnO obtained, the XRD of MnO/C product as shown in Figure 2.The chemical property that has of MnO/C product of preparation is as shown in Figure 3: under room temperature, 1C discharge capacity is 632.3mAh/g, and after 50 circulations, capability retention is 63.3%.
Embodiment 2:
0.4mol/L NH 4hCO 3with 0.2mol/L MnSO 4inject T-shaped micro passage reaction import with pump with flow velocity 70mL/min respectively, collide at Nodes solution and Rapid coprecipitation reaction occurs, flowing out through outlet after reaction channel, collecting reaction product, filter, and after spending deionized water in water rotary evaporation, obtain MnCO 3presoma; By the MnCO of glucose and preparation 3presoma is 0.4:1 Homogeneous phase mixing in mass ratio, at nitrogen atmosphere, calcines 8h under 600 degrees Celsius, obtains MnO/C product.The cubic system MnO obtained, MnCO 3the pattern of presoma and MnO/C product respectively as shown in Figure 4 and Figure 5.The chemical property that has of MnO/C product of preparation is as shown in Figure 6: under room temperature, 1C discharge capacity is 878.6mAh/g, and after 50 circulations, capability retention is 56.3%.
Embodiment 3:
0.4mol/L NH 4hCO 3with 0.2mol/L MnSO 4inject T-shaped micro passage reaction import with pump with flow velocity 20mL/min respectively, collide at Nodes solution and Rapid coprecipitation reaction occurs, flowing out through outlet after reaction channel, collecting reaction product, filter, and after spending deionized water in water rotary evaporation, obtain MnCO 3presoma; By the MnCO of starch and preparation 3presoma is 0.15:1 Homogeneous phase mixing in mass ratio, at nitrogen atmosphere, calcines 6h under 450 degrees Celsius, obtains MnO/C product.The cubic system MnO obtained, MnCO 3the pattern of presoma and MnO/C product respectively as shown in Figure 7 and Figure 8.The chemical property that has of MnO/C product of preparation is as shown in Figure 9: under room temperature, 1C discharge capacity is 750.8mAh/g, and after 50 circulations, capability retention is 39.3%.
Embodiment 4:
0.5mol/L NH 4hCO 3with 0.2mol/L MnSO 4inject T-shaped micro passage reaction import with pump with flow velocity 50mL/min respectively, collide at Nodes solution and Rapid coprecipitation reaction occurs, flowing out through outlet after reaction channel, collecting reaction product, filter, and after spending deionized water in water rotary evaporation, obtain MnCO 3presoma; By the MnCO of sucrose and preparation 3presoma is 0.15:1 Homogeneous phase mixing in mass ratio, at nitrogen atmosphere, calcines 6h under 450 degrees Celsius, obtains MnO/C product.The chemical property that this product has is as shown in Figure 10: under room temperature, 1C discharge capacity is 644.1mAh/g, and after 50 circulations, capability retention is 62.8%.
Embodiment 5:
0.2mol/L NH 4hCO 3with 0.1mol/L MnSO 4inject T-shaped micro passage reaction import with pump with flow velocity 50mL/min respectively, collide at Nodes solution and Rapid coprecipitation reaction occurs, flowing out through outlet after reaction channel, collecting reaction product, filter, and after spending deionized water in water rotary evaporation, obtain MnCO 3presoma; By the MnCO of sucrose and preparation 3presoma is 0.15:1 Homogeneous phase mixing in mass ratio, at nitrogen atmosphere, calcines 6h under 450 degrees Celsius, obtains MnO/C product.The chemical property that this product has is as shown in figure 11: under room temperature, 1C discharge capacity is 751.0mAh/g, and after 50 circulations, capability retention is 63.5%.
To sum up, as can be seen from above-described embodiment, the method not only technique is simple, and substantially reduces the reaction time, is applicable to large-scale production, improves the performance of material.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.

Claims (8)

1. prepare a method for lithium ion battery negative material, it is characterized in that, comprise the following steps:
1) presoma MnCO is prepared 3:
Be the MnSO of 1:1-2.5 by concentration ratio 4and NH 4hCO 3two kinds of reaction solutions inject two imports of micro passage reaction respectively, described MnSO 4and NH 4hCO 3two kinds of reaction solutions carry out colliding at the crossed node place of two imports of described micro passage reaction and Rapid coprecipitation reaction occur, gained product flows out through the outlet of described micro passage reaction, described product is collected, filter, and after spending deionized water in water rotary evaporation, obtain MnCO 3presoma;
2) MnO/C is prepared:
By step 1) prepared by MnCO 3with carbon source in mass ratio for 1:0.15-0.4 mixes, be calcine 3-8 hour under the nitrogen environment of 400-600 DEG C in temperature after mixing, obtain MnO/C.
2. method according to claim 1, is characterized in that, described by MnSO 4and NH 4hCO 3two kinds of reaction solutions enter two imports of described micro passage reaction respectively by infusion.
3. method according to claim 2, is characterized in that, described by MnSO 4and NH 4hCO 3two kinds of reaction solutions enter two imports of described micro passage reaction flow velocity respectively by infusion is identical.
4. method according to claim 3, is characterized in that, described flow velocity is 20-70mL/min.
5. method according to claim 1, is characterized in that, described micro passage reaction is T-shaped micro passage reaction.
6. method according to claim 1, is characterized in that, described carbon source is sucrose, starch, glucose, ascorbic acid wherein one or more.
7. method according to claim 1, is characterized in that, described MnSO 4the concentration of reaction solution is 0.1-0.2mol/L.
8. method according to claim 1, is characterized in that, described NH 4hCO 3the concentration of reaction solution is 0.2-0.5mol/L.
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CN105304901A (en) * 2015-09-25 2016-02-03 北京理工大学 Nickel-carbonate-doped manganese-carbonate-based anode material for lithium ion battery and preparation method
CN105895912A (en) * 2016-04-28 2016-08-24 江苏大学 High-voltage lithium ion battery
CN106549153A (en) * 2015-09-16 2017-03-29 中国科学院大连化学物理研究所 A kind of hollow hexagonal shape hydroxy cobalt oxide nano material and preparation method thereof
CN106914234A (en) * 2017-02-23 2017-07-04 广西大学 One kind " almond-shaped " Mn2O3The preparation method of/C particles
CN107834046A (en) * 2017-11-07 2018-03-23 衢州市鼎盛化工科技有限公司 The preparation method and its consersion unit of ternary material precursor
CN108134057A (en) * 2017-12-05 2018-06-08 西北工业大学 A kind of preparation method of high-tap density MnO/C negative materials
CN108550807A (en) * 2018-04-02 2018-09-18 长安大学 A kind of ternary precursor and preparation method thereof and the ternary cathode material of lithium ion battery and preparation method thereof based on ternary precursor
CN109686925A (en) * 2017-10-19 2019-04-26 深圳市寒暑科技新能源有限公司 A kind of Zinc ion battery and its MnO2The preparation method of/C positive electrode material
CN111261850A (en) * 2018-12-03 2020-06-09 成都市银隆新能源有限公司 Method for preparing hollow spherical material of lithium ion battery by utilizing microfluidic technology
CN111261849A (en) * 2018-12-03 2020-06-09 成都市银隆新能源有限公司 Method for preparing solid spherical material for negative electrode of lithium ion battery by using microfluidic technology
CN111250009A (en) * 2018-12-03 2020-06-09 成都市银隆新能源有限公司 Method for preparing lithium ion battery material by using microfluidic technology
CN111252751A (en) * 2018-12-03 2020-06-09 成都市银隆新能源有限公司 Microfluidic droplet forming structural component and method for preparing solid spherical lithium iron phosphate
CN112838198A (en) * 2020-12-28 2021-05-25 瑞海泊有限公司 Water-based zinc ion battery positive electrode material, preparation method thereof and water-based zinc ion battery
WO2023125748A1 (en) * 2021-12-30 2023-07-06 宁夏中化锂电池材料有限公司 Preparation system and preparation method for positive electrode material precursor

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CN106549153B (en) * 2015-09-16 2019-04-02 中国科学院大连化学物理研究所 A kind of hollow hexagonal shape hydroxy cobalt oxide nano material and preparation method thereof
CN106549153A (en) * 2015-09-16 2017-03-29 中国科学院大连化学物理研究所 A kind of hollow hexagonal shape hydroxy cobalt oxide nano material and preparation method thereof
CN105304901A (en) * 2015-09-25 2016-02-03 北京理工大学 Nickel-carbonate-doped manganese-carbonate-based anode material for lithium ion battery and preparation method
CN105895912A (en) * 2016-04-28 2016-08-24 江苏大学 High-voltage lithium ion battery
CN106914234A (en) * 2017-02-23 2017-07-04 广西大学 One kind " almond-shaped " Mn2O3The preparation method of/C particles
CN106914234B (en) * 2017-02-23 2020-11-06 广西大学 'Almond-shaped' Mn2O3Preparation method of/C particles
CN109686925A (en) * 2017-10-19 2019-04-26 深圳市寒暑科技新能源有限公司 A kind of Zinc ion battery and its MnO2The preparation method of/C positive electrode material
CN107834046A (en) * 2017-11-07 2018-03-23 衢州市鼎盛化工科技有限公司 The preparation method and its consersion unit of ternary material precursor
CN108134057A (en) * 2017-12-05 2018-06-08 西北工业大学 A kind of preparation method of high-tap density MnO/C negative materials
CN108550807A (en) * 2018-04-02 2018-09-18 长安大学 A kind of ternary precursor and preparation method thereof and the ternary cathode material of lithium ion battery and preparation method thereof based on ternary precursor
CN111261850A (en) * 2018-12-03 2020-06-09 成都市银隆新能源有限公司 Method for preparing hollow spherical material of lithium ion battery by utilizing microfluidic technology
CN111261849A (en) * 2018-12-03 2020-06-09 成都市银隆新能源有限公司 Method for preparing solid spherical material for negative electrode of lithium ion battery by using microfluidic technology
CN111250009A (en) * 2018-12-03 2020-06-09 成都市银隆新能源有限公司 Method for preparing lithium ion battery material by using microfluidic technology
CN111252751A (en) * 2018-12-03 2020-06-09 成都市银隆新能源有限公司 Microfluidic droplet forming structural component and method for preparing solid spherical lithium iron phosphate
CN111261849B (en) * 2018-12-03 2022-10-21 成都市银隆新能源有限公司 Method for preparing solid spherical material for negative electrode of lithium ion battery by using microfluidic technology
CN111261850B (en) * 2018-12-03 2022-10-21 成都市银隆新能源有限公司 Method for preparing hollow spherical material of lithium ion battery by utilizing microfluidic technology
CN112838198A (en) * 2020-12-28 2021-05-25 瑞海泊有限公司 Water-based zinc ion battery positive electrode material, preparation method thereof and water-based zinc ion battery
WO2023125748A1 (en) * 2021-12-30 2023-07-06 宁夏中化锂电池材料有限公司 Preparation system and preparation method for positive electrode material precursor

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