WO2014032588A1 - 电池复合材料及其前驱物的制备方法 - Google Patents
电池复合材料及其前驱物的制备方法 Download PDFInfo
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- WO2014032588A1 WO2014032588A1 PCT/CN2013/082451 CN2013082451W WO2014032588A1 WO 2014032588 A1 WO2014032588 A1 WO 2014032588A1 CN 2013082451 W CN2013082451 W CN 2013082451W WO 2014032588 A1 WO2014032588 A1 WO 2014032588A1
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- Prior art keywords
- battery composite
- manganese
- precursor
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- lithium
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/38—Condensed phosphates
- C01B25/42—Pyrophosphates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/08—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
-
- 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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/20—Two-dimensional structures
- C01P2002/22—Two-dimensional structures layered hydroxide-type, e.g. of the hydrotalcite-type
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
-
- 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
Definitions
- the invention relates to a preparation method, in particular to a battery composite material and a preparation method thereof. Background technique
- lithium phosphate (LiMP0 4 , where M can be any metal such as: iron, cobalt, manganese, etc.) composite battery because there is no danger of explosion, and has the advantages of large current, long cycle life, etc.
- traditional low-power, high-pollution batteries such as lead acid, nickel-metal hydride, and nickel-cadmium.
- a nano-metal oxide co-crystallized lithium phosphate compound (LMP-NCO) battery has been developed, which is a single inseparable compound formed by a precursor containing lithium, phosphorus and a metal or metal compound.
- the presently applied method for preparing a nano-metal oxide co-crystallized lithium phosphate compound is carried out by reacting a compound such as iron phosphate (FeP0 4 ), lithium hydroxide (LiOH), and lithium carbonate (Li 2 CO 3 ).
- Preparation due to the high cost of lithium hydroxide raw materials, and the use of more iron phosphate raw materials during preparation, and more time spent on raw material grinding, so that the unit time and money cost of the battery is increased, plus the reaction includes acid and alkali Neutralization reaction, so it is quite sensitive to the pH value of the process, and it will cause the raw material to be viscous, which leads to blockage of the process pipeline, and the process temperature cannot be stably controlled due to the acid-base neutralization accompanied by the absorption and exothermic phenomenon, further improving the process.
- the difficulty of operation due to the high cost of lithium hydroxide raw materials, and the use of more iron phosphate raw materials during preparation, and more time spent on raw material grinding, so that the unit time and money cost of the battery is increased, plus the reaction includes acid and alkali Neutralization reaction, so it is quite sensitive to the pH value of the process, and it will cause the raw material to be viscous, which leads to blockage of the process pipeline, and the process temperature cannot be stably controlled
- the main object of the present invention is to provide a battery composite material and a method for preparing the same, which solve the problem that the raw materials and time cost of the known battery preparation are high, and the acid-base neutralization reaction causes the process pH value to be sensitive and the pipeline is blocked. And temperature control The system is not easy, the redox reaction causes insufficient process stability, and the disadvantages of contamination caused by multiple material transfer grooves.
- Another object of the present invention is to provide a battery composite material and a method for preparing the same, which can prepare a battery composite material by using a precursor generated by the reaction, thereby effectively reducing the number of redox reactions to improve process stability, thereby reducing the process. Operational difficulty. At the same time, it can also achieve a significant reduction in the time required for grinding, thereby reducing unit time and money costs, as well as reducing process pH sensitivity, avoiding material stickiness and pipe blockage, and stable control of process temperature.
- Another object of the present invention is to provide a method for preparing a battery composite material and a precursor thereof, which can reduce the pH of the process by using lithium carbonate instead of lithium hydroxide in the process, thereby enhancing the effect of carbon coating and achieving Improve the performance of product performance.
- an embodiment of the present invention provides a method for preparing a battery composite, comprising at least the steps of: (a) providing phosphoric acid, manganese carbonate, water, and a first reactant, the chemical formula of the phosphoric acid is 3 ⁇ 4P0 4 ; (b) to the manganese carbonate, the water of reaction with the phosphoric acid to produce a first product; (c) calcining the product to form a first precursor, the precursor is manganese phosphate pyrophosphate, the formula Mn 2 P 2 0 7 ; and (d) reacting the precursor with at least the first reactant, and calcining the reacted mixture to form the battery composite.
- another embodiment of the present invention provides a method for preparing a battery composite precursor, comprising at least the steps of: reacting a compound that releases a phosphate ion in a solution with manganese to form a first product And heat treating the first product to form a precursor, the precursor being manganese pyrophosphate having a chemical formula of Mn 2 P 2 0 7 .
- another embodiment of the present invention provides a method for preparing a battery composite, comprising at least the steps of: using Mn 2 P 2 0 7 as a precursor, and performing the precursor with at least a first reactant. Reacting, and calcining the reaction mixture to form a battery composite material, wherein the battery composite material is lithium manganese phosphate, lithium iron iron manganese phosphate, nano metal oxide co-crystallized lithium manganese phosphate compound or nano metal oxide co-crystallized lithium phosphate Iron manganese compound.
- FIG. 1 is a flow chart of a method of preparing a battery composite material according to a preferred embodiment of the present invention.
- FIG. 2 is a detailed flow chart of a method for preparing a battery composite material of the present invention.
- FIG. 3 is a further detailed flow chart of a method of preparing a battery composite material of the present invention.
- Fig. 4 is a X-ray diffraction analysis diagram of a precursor prepared by a method for preparing a battery composite according to the present invention.
- Figure 5 is a scanning electron microscope analysis of a precursor prepared by a method for preparing a battery composite according to the present invention.
- Fig. 6 is a X-ray diffraction analysis diagram of a finished battery composite material prepared by the method for preparing a battery composite according to the present invention.
- Fig. 7 is a scanning electron microscope analysis diagram of a finished battery composite material prepared by the method for preparing a battery composite according to the present invention.
- Fig. 8 is a graph showing the charge and discharge of a button type battery made of a battery composite material prepared by a method for preparing a battery composite material according to the present invention.
- FIG. 9 is an X-ray diffraction of another battery composite product prepared according to the method for preparing a battery composite material of the present invention. Analysis chart.
- Figure 10 is a scanning electron microscope analysis of another battery composite product prepared according to the method for preparing a battery composite of the present invention.
- Fig. 11 is a graph showing the charge and discharge of a button type battery made of another battery composite material prepared by the method for preparing a battery composite material according to the present invention.
- FIGS. 12A, 12B and 12C are scanning electron microscopic analysis views of a nanometal oxide co-crystallized lithium manganese phosphate compound (LMP-NCO) prepared according to the method for preparing a battery composite of the present invention.
- LMP-NCO lithium manganese phosphate compound
- 13A, 13B and 13C are scanning electron microscopic analysis views of a nanometal oxide co-crystallized lithium iron iron manganese compound (LFMP-NCO) prepared by a method for preparing a battery composite according to the present invention.
- LFMP-NCO nanometal oxide co-crystallized lithium iron iron manganese compound
- FIG. 1 is a flow chart of a method for preparing a battery composite according to a preferred embodiment of the present invention.
- the method for preparing the battery composite material of the present invention comprises the following steps: First, as shown in step S100, phosphoric acid, manganese carbonate, water and a first reactant are provided, wherein the chemical formula of the phosphoric acid is H 3 P0 4 .
- the first reactant may be lithium carbonate (chemical formula Li 2 C0 3 ) or other compound having a lithium atom, or a mixture of several lithium-containing compounds, but is not limited thereto.
- step S200 phosphoric acid is reacted with water to generate a first product
- step S200 preferably dissolves the second amount of phosphoric acid and the third amount in a first amount of water.
- the manganese carbonate is continuously stirred for the first time to produce the first product.
- the first time may be, but is not limited to, 24 hours, and the weight ratio of the second quantity and the third quantity is substantially about 1 to 1, for example, the second quantity is 462.7 grams, and the third quantity is 460 grams, the first time
- the basis weight is preferably 3.2 liters.
- step S200 dissolves 462.7 g of phosphoric acid and 460 g of manganese carbonate in 3.2 liters of water, and stirring is continued for 24 hours to produce a first product, but not limited thereto.
- the first product may be obtained by reacting another compound which releases phosphate ions in a solution after mixing with manganese, and is not limited thereto.
- step S300 the precursor is produced by calcining the first product obtained in step S200, and the precursor is manganese pyrophosphate having a chemical formula of Mn 2 P 2 0 7 .
- step S400 the precursor is reacted with the first reactant, and the reacted mixture is calcined to form a battery composite such as lithium manganese phosphate (LiMnP0 4 , LMP) o wherein it should be understood that
- the precursor is reacted with at least the first reactant, and is not limited to reacting with the first reactant as described above, or reacting the precursor with the first reactant and the second reactant,
- the first reactant is lithium carbonate
- the second reactant is iron phosphate containing two crystal waters (chemical formula: FeP0 4 * 2H 2 0)
- the reaction mixture is calcined to form a battery composite material such as lithium iron manganese phosphate. (LiMn x F ei _ x P0 4 , x>0, LFMP).
- a metal oxide such as V 2 O 5 , Ti0 2 , MgO or the like may be added to obtain LiMnP0 4 containing a metal oxide or LiMn x F ei _ x P0 containing a metal oxide.
- the metal oxide-containing LiMnPO 4 material may be referred to as "nano metal oxide co-crystallized lithium manganese phosphate compound (LMP-NCO)", and the metal oxide-containing LiMn x F ei _ x P0 4 The material may be referred to as “nanometal oxide co-crystallized lithium iron phosphate manganese compound (LFMP-NCO)".
- the preparation method of the battery composite material of the invention reacts with the lithium carbonate by the precursor generated by the reaction to prepare the battery composite material, so that the number of necessary redox reactions can be reduced when the lithium salt is added, thereby improving the process stability. Thereby reducing the difficulty of the process operation. At the same time, it can also achieve a significant reduction in the time required for grinding, which in turn reduces unit time and money costs, as well as reducing process pH sensitivity, avoiding material stickiness and pipe blockage, and stable control of process temperature.
- the pH of the process can be stabilized to enhance the effect of carbon coating and improve the performance of the product.
- FIG. 2 is a detailed flow chart of a method for preparing a battery composite material according to the present invention.
- the detailed process of the step S300 of the method for preparing a battery composite material of the present invention includes the steps of: adding a dispersant to the first product as shown in step S301; then, as shown in step S302, The first rotation speed is performed for the second time to obtain a precursor solution.
- the first speed is 450 to 650 revolutions per minute (450 to 650 rpm), and the second time is 1 hour.
- step S302 is: performing a grinding operation for 1 hour at a rotational speed of 450 to 650 revolutions per minute, which is not limited thereto. Then, as shown in step S303, the precursor solution is subjected to a spray drying operation and a heat treatment operation to obtain a dried precursor, that is, manganese pyrophosphate (Mn 2 P 2 0 7 ), wherein the heat treatment operation is at a temperature greater than 380°.
- the heat treatment of at least 2 hours is carried out in nitrogen of C, but is not limited thereto.
- step S401 is to mix a precursor, that is, Mn 2 P 2 0 7 , with at least a first reactant, which may be lithium carbonate or other compound having a lithium atom, or a mixture of lithium-containing compounds; then, as shown in step S402, a dispersant such as polyethylene glycol octylphenyl ether (Triton X-100) is added, and a spray granulation operation is performed; then, as shown in step S403 And performing a high-temperature calcination operation, for example, performing a calcination operation for at least 8 to 12 hours in a nitrogen atmosphere having a temperature of 550 ° C to 750 ° C, but not limited thereto; and finally, generating the present as shown in step S404
- the invention discloses a finished battery composite material, such as lithium manganes, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium
- a dispersing agent was added and ground using a grinding method (rotation speed: 450 to 650 rpm) for several hours to obtain a Mn 2 P 2 0 7 precursor solution.
- the precursor solution was spray dried.
- the spray dried product was placed in a ceramic crucible and calcined in nitrogen at a temperature of 380 ° C for at least 2 hours.
- XRD X-ray Diffraction
- a ratio of 8:1:1 is mixed.
- the mixture was mixed for 10 minutes, and then the dispersed slurry was coated on an aluminum substrate with a blade coater to a thickness of 0.3 mm. After that, the coated pole piece was placed in an oven and dried at 100 ° C for 1 hour, and then taken out, and formed into a circular plate having a diameter of 1.3 cm, using lithium metal as a negative electrode, 1 molar molecular concentration.
- a mixture of LiPF 6 and EC and DMC in a volume ratio of 1:1 is an electrolyte, which is made into a coin-type battery (Coin-Cell), and is charged and discharged for 0.1 cycles and 2 coulomb charge.
- a two-cycle electrical test is performed. The test results are shown in Figure 8. The cut-off voltage is 2 to 4.5 volts.
- step S200 or step S400 of the first embodiment by adding a metal oxide such as V 2 0 5 , Ti0 2 , MgO or the like, a nano metal oxide eutectic lithium manganese phosphate compound can be formed, and the rest is The same as the first embodiment, and details are not described herein again.
- a metal oxide such as V 2 0 5 , Ti0 2 , MgO or the like
- the dispersion-coated slurry was coated on an aluminum substrate to a thickness of 0.3 mm.
- the coated pole piece was placed in an oven and dried at 100 ° C for 1 hour, and then taken out, and formed into a circular plate having a diameter of 1.3 cm, using lithium metal as a negative electrode, 1 molar molecular concentration.
- a mixture of LiPF 6 and a ratio of 3:7 EC and DMC is used as an electrolyte, which is made into a coin-type battery (Coin-Cell), and is charged and discharged for 0.1 cycles and 2 coulomb charge.
- a two-cycle electrical test was performed. The test results are shown in Figure 11, with a cut-off voltage of 2.5 to 4.5 volts.
- step S200 or step S400 of the fourth embodiment a metal oxide such as V 2 O 5 , Ti0 2 , MgO or the like is added to form a nano metal oxide eutectic lithium iron phosphate manganese compound, and the rest The same as the fourth embodiment, and details are not described herein again.
- FIG. 12A, FIG. 12B and FIG. 12C are scanning electron microscope analysis diagrams of the nano metal oxide cocrystallized lithium manganese phosphate compound (LMP-NCO) prepared by the method for preparing the battery composite material of the present invention. As shown in Figure 12A, 12B and FIG.
- the scanning electron microscopic analysis chart of the nano-metal oxide co-crystallized lithium manganese phosphate compound prepared by the foregoing examples of the present invention is performed at 50,000 times magnification, 10,000 times magnification and 1,000 times.
- the analysis images at the magnification are shown in Fig. 12A, Fig. 12B, and Fig. 12C, respectively.
- FIG. 13A, FIG. 13B and FIG. 13C are scanning electron microscope analysis diagrams of the nano metal oxide co-crystallized lithium iron phosphate manganese compound (LFMP-NCO) prepared by the method for preparing a battery composite of the present invention.
- the scanning electron microscope analysis pattern of the nano metal oxide cocrystallized lithium iron phosphate manganese compound prepared by the foregoing embodiments of the present invention is 50,000 times and 10,000 times.
- the analysis images at the magnification and the thousandth magnification are shown in Fig. 13A, Fig. 13B, and Fig. 13C, respectively.
- the preparation method of the battery composite material of the invention prepares the battery composite material by the precursor generated by the reaction, and can effectively reduce the number of redox reactions to improve the process stability, thereby reducing the operation difficulty of the process. At the same time, it can also achieve a significant reduction in the time required for grinding, thereby reducing unit time and money costs, as well as reducing process pH sensitivity, avoiding material stickiness and pipe blockage, and stable control of process temperature. At the same time, by replacing lithium hydroxide with lithium carbonate in the process, the pH of the process can be stabilized to enhance the effect of carbon coating and to enhance the performance of the product.
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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US14/424,517 US9932235B2 (en) | 2012-08-28 | 2013-08-28 | Preparation method of battery composite material and precursor thereof |
JP2015528861A JP6189957B2 (ja) | 2012-08-28 | 2013-08-28 | バッテリー複合素材及びその前駆体の調製方法 |
KR1020157008110A KR101787212B1 (ko) | 2012-08-28 | 2013-08-28 | 배터리 복합 재료 및 이의 전구물질의 제조 방법 |
EP13834181.3A EP2892091B1 (en) | 2012-08-28 | 2013-08-28 | Method of producing battery composite material and its precursor |
CA2883582A CA2883582C (en) | 2012-08-28 | 2013-08-28 | Preparation method of battery composite material and precursor thereof |
CN201380045376.8A CN104871348B (zh) | 2012-08-28 | 2013-08-28 | 电池复合材料及其前驱物的制备方法 |
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US201261694034P | 2012-08-28 | 2012-08-28 | |
US61/694,034 | 2012-08-28 |
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US (1) | US9932235B2 (zh) |
EP (1) | EP2892091B1 (zh) |
JP (1) | JP6189957B2 (zh) |
KR (1) | KR101787212B1 (zh) |
CN (1) | CN104871348B (zh) |
CA (1) | CA2883582C (zh) |
TW (1) | TWI498278B (zh) |
WO (1) | WO2014032588A1 (zh) |
Cited By (3)
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WO2016110261A1 (zh) * | 2015-01-08 | 2016-07-14 | 台湾立凯电能科技股份有限公司 | 电池复合材料及其前驱物的制备方法 |
JP2019040854A (ja) * | 2017-07-14 | 2019-03-14 | 泓辰電池材料有限公司Hcm Co., Ltd. | リチウム電池のカソードに用いるためのリン酸マンガン鉄リチウム系粒子、これを含有するリン酸マンガン鉄リチウム系粉末材料、およびその粉末材料を製造する方法 |
CN115535991A (zh) * | 2022-09-28 | 2022-12-30 | 深圳中芯能科技有限公司 | 一种纳米晶磷酸系正极材料及其制备方法 |
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CN104871348B (zh) | 2017-12-22 |
TWI498278B (zh) | 2015-09-01 |
CA2883582C (en) | 2017-09-12 |
CA2883582A1 (en) | 2014-03-06 |
CN104871348A (zh) | 2015-08-26 |
TW201408589A (zh) | 2014-03-01 |
KR101787212B1 (ko) | 2017-10-18 |
US9932235B2 (en) | 2018-04-03 |
US20150218000A1 (en) | 2015-08-06 |
JP6189957B2 (ja) | 2017-08-30 |
JP2015531970A (ja) | 2015-11-05 |
KR20150048860A (ko) | 2015-05-07 |
EP2892091B1 (en) | 2020-10-07 |
EP2892091A4 (en) | 2016-04-13 |
EP2892091A1 (en) | 2015-07-08 |
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