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A preparation method of a lithium nickel manganese oxide cathode material of a battery includes steps of providing a nickel compound, a manganese compound, a first quantity of lithium compound, a second quantity of lithium compound and a compound containing metallic ions, mixing the nickel compound, the first quantity of lithium compound, dispersant and deionized water to produce first product solution, adding the manganese compound into the first product solution and mixing to produce second product solution, performing a first grinding to produce first precursor solution, mixing the second quantity of lithium compound, the compound containing the metallic ions and the first precursor solution, then performing a second grinding to produce second precursor solution, and calcining the second precursor solution to produce the lithium nickel manganese oxide cathode material of the battery, the formula of which is written by Li_(1.0+x)Ni_(0.5)Mn_(1.5)M_(y)O_(4). Therefore, the activation energy of reaction can be reduced.


Patent
Advanced Lithium Electrochemistry Co. | Date: 2017-05-31

A method of preparing a lithium nickel manganese oxide cathode material comprises the following steps of providing a precursor material, the precursor material comprises a lithium compound, a nickel compound and a manganese compound, mixing and grinding the lithium compound, the nickel compound and the manganese compound to from a cathode material precursor having a specific span value or a specific value of 90 percent particle size volume distribution (D_(90)), (wherein the specific span value is greater than or equal to 1.0 m and lesser than or equal to 2.0 m, the specific value of 90 percent particle size volume distribution is greater than or equal to 0.3 m and lesser than or equal to 0.4 m), and processing a thermal treatment to the cathode material precursor to form the lithium nickel manganese oxide cathode material.


Patent
Advanced Lithium Electrochemistry Co. | Date: 2014-05-28

A preparation method of a battery composite material includes steps of providing phosphoric acid, iron powder, a carbon source and a first reactant, processing a reaction of the phosphoric acid and the iron powder to produce a first product, calcining the first product to produce a precursor, among which the formula of the precursor is written by Fe_(7)(PO_(4))_(6), and processing a reaction of the precursor, the carbon source and the first reactant to get a reaction mixture and calcining the reaction mixture to produce the battery composite material. As a result, the present invention achieves the advantages of reducing grind time of fabricating processes, so that the prime cost, the time cost, and the difficulty of fabricating are reduced.


Patent
Advanced Lithium Electrochemistry Co. | Date: 2015-07-08

A preparation method of a battery composite material includes steps of providing phosphoric acid, manganese carbonate, water and a first reactant; processing a reaction of the phosphoric acid, the manganese carbonate and the water to produce a first product; calcining the first product to produce a precursor, which is written by Mn_(2)P_(2)O_(7); processing a reaction of the precursor and at least the first reactant to get a reaction mixture, and then calcining the reaction mixture to produce the battery composite material. As a result, the present invention achieves the advantages of reducing the times of the reduction-oxidation reaction, so that the stability of the processes is enhanced, and the difficulty of the processes is reduced.


Patent
Advanced Lithium Electrochemistry Co. | Date: 2016-04-20

A cathode material with oxygen vacancy is provided. The cathode material includes a lithium metal phosphate compound having a general formula LiMPO_(4-Z), wherein M represents at least one of a first-row transition metal, and 0.001z0.05.


Patent
Advanced Lithium Electrochemistry Co. | Date: 2014-05-08

A preparation method of a battery composite material at least includes the following steps. Firstly, an iron compound, phosphoric acid, a manganese compound, a lithium compound and a carbon source are provided. Then, the phosphoric acid is added to a mixture of the iron compound and deionized water while stirring to form a first phosphate solution, a first amount of the manganese compound is added to the first phosphate solution, and the manganese compound and the first phosphate solution are continuously reacted for a first time period, so that a first product solution is formed. Then, a reaction between the first product solution, the carbon source and the lithium compound is carried out to form a precursor. Then, the precursor is thermally treated to form the battery composite material, wherein the battery composite material has a chemical formula: LiFe_(x)Mn_(1-x)PO_(4). Since the product powder is not subjected to aggregation during the thermal treatment process, the electric performance of the battery is enhanced.


Patent
Advanced Lithium Electrochemistry Co. | Date: 2016-03-16

A preparation method of a battery composite material at least includes the following steps. Firstly, an iron compound, phosphoric acid, a manganese compound, a lithium compound and a carbon source are provided. Then, the phosphoric acid is added to a mixture of the iron compound and deionized water while stirring to form a first phosphate solution, a first amount of the manganese compound is added to the first phosphate solution, and the manganese compound and the first phosphate solution are continuously reacted for a first time period, so that a first product solution is formed. Then, a reaction between the first product solution, the carbon source and the lithium compound is carried out to form a precursor. Then, the precursor is thermally treated to form the battery composite material, wherein the battery composite material has a chemical formula: LiFe_(x)Mn_(1-x)PO_(4). Since the product powder is not subjected to aggregation during the thermal treatment process, the electric performance of the battery is enhanced.


Patent
Advanced Lithium Electrochemistry Co. | Date: 2014-01-22

A cathode material with double carbon coatings is provided. The cathode material includes a lithium metal phosphate matrix, a first carbon coating, and a second carbon coating. The first carbon coating is coated on the lithium metal phosphate matrix. The second carbon coating is coated on the first carbon coating. The carbon source of the first carbon coating is a carbohydrate or a water-soluble macromolecule compound having relatively smaller molecular weight. The carbon source of the second carbon coating is a macromolecule compound having relatively higher molecular weight.


Patent
Advanced Lithium Electrochemistry Co. | Date: 2015-04-15

A composition for use in an electrochemical redox reaction is described. The composition may comprise a material represented by a general formula M_(y)XO_(4) or A_(x)M_(y)XO_(4), where each of A (where present), M, and X independently represents at least one element, O represents oxygen, and each of x (where present) and y represent a number, and an oxide of at least one element, wherein the material and the oxide are cocrystalline, and/or wherein a volume of a crystalline structural unit of the composition is larger than a volume of a crystalline structural unit of the material alone. An electrode comprising such a composition is also described, as is an electrochemical cell comprising such an electrode. A process of preparing a composition for use in an electrochemical redox reaction is also described.


Patent
Advanced Lithium Electrochemistry Co. | Date: 2016-03-16

A method for preparing battery composite material, comprising the steps: providing phosphoric acid, a first metal source, a second metal source and water (S100); and the first metal source, the second metal source and the phosphoric acid reacting with water to generate a first product (S200); calcining the first product to generate a first precursor or a second precursor (S300), wherein the first precursor and the second precursor are solid solution containing a first metal and a second metal; and the first precursor and the second precursor reacting with a first rcactant, then the reaction mixture being calcined to generate the battery composite material (S400). Therefore, the battery products have two stable redox charge and discharge platforms, and the stability and electrical performance of the products are effectively improved.

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