Manufacturing method for battery materials

Abstract

The present invention provides a method for manufacturing battery materials that suppresses the formation of precipitates from the raw materials, even in combinations of two or more raw materials that do not mix and produce precipitates, thereby preventing the inconvenience of the precipitates blocking the supply pathways of the two or more raw materials, and enabling good productivity of battery materials using the flame spray pyrolysis method in an easy and simple manner. [Solution] A method for producing a battery material, comprising: a preparation step of preparing two or more raw materials, each having different components, by mixing two or more chemicals; a flame spray pyrolysis step of supplying the two or more raw materials into a burner via separate routes and then introducing them into a flame to obtain a precursor; and a heat treatment step of heat treating the precursor to obtain a battery material.

Claims

1. A preparation process involves mixing two or more drugs and preparing two or more raw materials, each with different components. A flame spray pyrolysis step is performed in which the two or more raw materials are supplied to the burner via separate routes, and then introduced into the flame to obtain a precursor. A heat treatment step of heat-treating the precursor to obtain a battery material, A method for manufacturing battery materials, including

2. The method for manufacturing a battery material according to claim 1, wherein the burner is a multi-fluid nozzle burner with three or more fluid nozzles.

3. The method for manufacturing a battery material according to claim 1 or 2, wherein the burner is a three-fluid nozzle burner or a four-fluid nozzle burner.

4. A method for producing a battery material according to claim 1 or 2, wherein one of the two or more raw materials contains lithium.

5. A method for producing a battery material according to claim 1 or 2, wherein one of the two or more raw materials contains lithium and the other raw material contains titanium.

6. The aforementioned battery material has the general formula: Li ａ Ti ｘ M ｙ O ｚ A method for producing a battery material according to claim 1 or 2, represented as (0.5 ≤ a ≤ 5, 0 < x ≤ 10, 0 ≤ y ≤ 5, 1.5 ≤ z ≤ 20, where M is one or more elements selected from the group consisting of W, Mo, V, Mg, Ba, Cu, Fe, Zn, Mn, Ni, Co, Cr, Zr, Al, Ta, Ru, Rh, Ir, Pd, Pt, Ag, Au, Ga, In, Ge, Sn, Se, Te, Bi, Re, Os, Si, P, B, S, F, Na, and K).

7. A method for producing a battery material according to claim 1 or 2, wherein the supply rate of the two or more raw materials is 0.1 to 500 mL / min.

8. The method for manufacturing a battery material according to claim 1 or 2, wherein the heat treatment temperature in the heat treatment step is 500 to 1000°C.

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