(US10236503) Mixing device for preparing lithium composite transition metal oxide, lithium composite transition metal oxide prepared using the same, and method of preparing lithium composite transition metal oxide 机翻标题: 暂无翻译,请尝试点击翻译按钮。

源语言标题
(US10236503) Mixing device for preparing lithium composite transition metal oxide, lithium composite transition metal oxide prepared using the same, and method of preparing lithium composite transition metal oxide
公开号/公开日
US10236503 US20150311521 / 2019-03-19 2015-10-29
申请号/申请日
US14/648,038 / 2014-01-02
发明人
RYU JI HOON KANG SUNG JOONG KANG SEONG HOON OH SANG SEUNG JUNG WANG MO JO CHI HO HAN GI BEOM
申请人
LG CHEM
主分类号
IPC分类号
B01F-005/02 B01F-007/00 B01F-013/10 B01J-003/00 B01J-019/18 B01J-019/28 C01B-025/45 C01G-001/02 H01M-004/02 H01M-004/485 H01M-010/0525
摘要
(US10236503)
A device for preparing a lithium composite transition metal oxide includes first and second mixers continuously arranged in a direction in which a fluid proceeds, wherein the first mixer has a closed structure including a hollow fixed cylinder, a rotating cylinder having the same axis as that of the hollow fixed cylinder and having an outer diameter that is smaller than an inner diameter of the fixed cylinder, an electric motor to generate power for rotation of the rotating cylinder, a rotation reaction space, as a separation space between the hollow fixed cylinder and the rotating cylinder, in which ring-shaped vortex pairs periodically arranged along a rotating shaft and rotating in opposite directions are formed, first inlets through which raw materials are introduced into the rotation reaction space, and a first outlet to discharge a reaction fluid formed from the rotation reaction space.
机翻摘要
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地址
代理人
(US10236503) Lerner, David, Littenberg, Krumholz & Mentlik, LLP
代理机构
优先权号
2013KR-0000714 2014WO-KR00001
主权利要求
(US10236503)
The invention claimed is:
1. A method for preparing a lithium composite transition metal oxide for lithium secondary batteries, comprising: 
 introducing reactants into a first mixer and mixing the reactants to form a reaction fluid in the form of a transition metal hydroxide, the reactants including raw materials and an alkalifying agent, the raw materials being introduced into a rotation reaction space of the first mixer through first inlets, wherein the first mixer has a closed structure comprising: 
  a hollow fixed cylinder; 
  a rotating cylinder positioned within the hollow fixed cylinder and having a rotational axis that is coincident with the central axis of the hollow fixed cylinder, the rotating cylinder having an outer diameter that is smaller than an inner diameter of the fixed cylinder; and 
  an electric motor to generate power for rotation of the rotating cylinder; 
  wherein the rotation reaction space is defined by a separation space between the hollow fixed cylinder and the rotating cylinder 
 forming ring-shaped vortex pairs periodically arranged along the rotational axis and rotating in opposite directions; 
 discharging the reaction fluid formed in the rotation reaction space from a first outlet of the first mixer and into a second mixer; and 
 mixing the reaction fluid with supercritical or subcritical water in the second mixer to synthesize a lithium composite transition metal oxide.
2. The method according to claim 1, wherein a ratio of a distance between the fixed cylinder and the rotating cylinder to an outer radius of the rotating cylinder of the first mixer is greater than 0.05 to less than 0.4.
3. The method according to claim 1, wherein the fluid has a kinematic viscosity of 0.4 cP to 400 cP and a device including the first and second mixers has a power consumption per unit mass of 0.05 W/kg to 100 W/kg.
4. The method according to claim 1, wherein the vortex pairs formed in the first mixer have a critical Reynolds number of 300 or more.
5. The method according to claim 1, wherein the first inlets comprise at least two inlets.
6. The method according to claim 1, wherein the second mixer comprises: 
 a hollow case; 
 second inlets through which the reaction fluid produced in the first mixer and the supercritical or subcritical water are introduced into the hollow case; and 
 a second outlet to discharge the lithium composite transition metal oxide prepared in the second mixer.
7. The method according to claim 6, wherein the second inlets to introduce supercritical or subcritical water are formed at opposite sides of an inlet to introduce the reaction fluid into the second mixer.
8. The method according to claim 1, further comprising: 
 drying the lithium composite transition metal oxide; and 
 calcining the lithium composite transition metal oxide.
9. The method according to claim 8, wherein the calcining enhances intercrystalline coherence by growing crystals of lithium composite transition metal oxide particles synthesized by the synthesizing.
10. The method according to claim 8, wherein the raw materials are a transition metal-containing metal precursor compound and a lithium precursor compound.
11. The method according to claim 10, wherein the transition metal-containing metal precursor compound is a nitrate, sulfate or acetate containing a transition metal, and the lithium precursor compound is a compound selected from the group consisting of lithium hydroxide and lithium nitrate.
12. The method according to claim 8, wherein the alkalifying agent is a compound selected from the group consisting of alkali metal hydroxides, alkaline earth metal hydroxides, and ammonia compounds.
13. The method according to claim 8, wherein, in the synthesizing, the supercritical or subcritical water is water having a pressure of 180 bar to 550 bar and a temperature of 200° C. to 700° C.
14. The method according to claim 8, wherein calcination temperature of the calcining is in a range of 600° C. to 1200° C.
法律状态
GRANTED
专利类型码
B2 A1
国别省市代码
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