阅读说明：本技术 涂覆氧化物材料的方法 (Method for coating oxide material ) 是由 M·阿尔夫 H·佐默 C·苏林 M·格罗纳 C·甘普 R·霍尔 J·斯宾塞二世 于 2019-08-30 设计创作，主要内容包括：本发明涉及一种涂覆氧化物材料的方法,所述方法包括以下步骤：(a)提供选自锂化镍钴铝氧化物、锂化钴锰氧化物和锂化层状镍钴锰氧化物的颗粒材料,(b)在比环境压力高5毫巴至1巴的压力下用金属醇盐或金属氨基化物或烷基金属化合物或金属卤化物或金属氢化物处理所述阴极活性材料,(c)在环境压力下用含有水分或HF的气体使由步骤(b)中获得的材料失活,其中步骤(b)在将混合能机械地引入颗粒材料中的混合器中进行,或者借助移动床或固定床进行。(The invention relates to a method for coating an oxide material, comprising the following steps: (a) providing a particulate material selected from the group consisting of lithiated nickel cobalt aluminum oxides, lithiated cobalt manganese oxides and lithiated layered nickel cobalt manganese oxides, (b) treating the cathode active material with a metal alkoxide or metal amide or metal alkyl compound or metal halide or metal hydride at a pressure of from 5 mbar to 1 bar above ambient pressure, (c) deactivating the material obtained from step (b) with a gas containing moisture or HF at ambient pressure, wherein step (b) is carried out in a mixer in which mixing energy is mechanically introduced into the particulate material, or by means of a moving or fixed bed.)

1. A method of preparing a coated oxide material, the method comprising the steps of:

(a) providing a particulate material selected from the group consisting of lithiated nickel cobalt aluminum oxides, lithiated cobalt manganese oxides, and lithiated layered nickel cobalt manganese oxides,

(b) treating the cathode active material with a metal alkoxide or metal amide or alkyl metal compound or metal halide or metal hydride at a pressure of from 5 mbar to 1 bar above ambient pressure,

(c) deactivating the material obtained in step (b) with a gas containing moisture or HF at ambient pressure,

wherein step (b) is carried out in a mixer in which mixing energy is introduced mechanically into the particulate material, or by means of a moving or fixed bed.

2. The process according to claim 1, wherein the mixer is selected from the group consisting of a forced mixer and a free-fall mixer.

3. The process according to claim 1 or 2, wherein step (c) is carried out in an atmosphere free of carbon dioxide.

4. The process according to any one of the preceding claims, wherein the metal alkyl compound or metal alkoxide or metal amide or metal hydride, respectively, is selected from M¹(R¹)₂、M²(R¹)₃、M³(R¹)_4-yH_y、M¹(OR²)₂、M²(OR²)₃、M³(OR²)₄、M³[N(R²)₂]₄、M²H₃、M³H₄、Si₂H₆、M³ ₂(R¹)₆And M³ ₂X₆And methyl groupAn aluminoxane, wherein:

R¹different or the same and selected from hydrogen and linear or branched C₁-C₈An alkyl group, a carboxyl group,

r2 are different or identical and are selected from linear or branched C₁-C₄An alkyl group, a carboxyl group,

M¹is selected from the group consisting of Mg and Zn,

M²is selected from the group consisting of Al and B,

M³selected from Si, Sn, Ti, Zr and Hf,

x is selected from the group consisting of a halide ion,

the variable y is selected from 0 to 4.

5. A method according to any one of the preceding claims, wherein the lithiated layered nickel cobalt manganese oxide is a material of general formula (I):

Li_(1+x)[Ni_aCo_bMn_cM⁴ _d]_(1-x)O₂ (I)

wherein:

M⁴selected from Mg, Ca, Ba, Al, Ti, Zr, Zn, Nb, Mo, V and Fe,

0≤x≤0.2，

0.1≤a≤0.8，

0≤b≤0.5，

0.1≤c≤0.6，

d is 0. ltoreq. d.ltoreq.0.1, and

a+b+c+d＝1。

6. the process according to any one of the preceding claims, wherein steps (b) and (c) are carried out in a rotating vessel with baffles.

7. The method according to any one of the preceding claims, wherein the exhaust gas is treated with water at a pressure above ambient pressure.

8. A method according to claim 7, wherein the exhaust gas is treated with water at a pressure of from 5 mbar to 1 bar above ambient pressure.

9. The process according to any one of the preceding claims, wherein in step (b) the pressure is from 5 mbar to 350 mbar above ambient pressure.

10. A method according to any preceding claim, wherein

In step (b), the cathode active material is treated with a metal alkoxide or metal amide or metal alkyl compound at a pressure of from 5 mbar to 1 bar above ambient pressure, and

in step (c), the material obtained from step (b) is deactivated with a HF-containing gas at ambient pressure.

11. A process according to any one of the preceding claims wherein the particles of lithiated nickel cobalt aluminum oxide or lithiated layered nickel cobalt manganese oxide, respectively, are bonded.

12. A process according to any one of the preceding claims wherein step (b) is carried out at a temperature of from 15 to 350 ℃.

13. The process according to any one of the preceding claims, wherein the reactor in which step (b) is carried out is flushed with an inert gas between steps (b) and (c).

14. A method according to any one of the preceding claims, comprising the step of removing the coating material by pneumatic convection from the reactor in which steps (b and (c) are carried out.