Method for producing lithium ion cell active material particles

Patent metadata

Field	Value
Publication number	US-2017125812-A1
Application number	US-201515317567-A
Country	US
Kind code	A1
Filing date	Jun 1, 2015
Priority date	Jun 11, 2014
Publication date	May 4, 2017
Grant date	—

Abstract

A method for producing an active material particle for a lithium ion battery, the method including steps of: flowing a plurality of raw material solutions into respective raw material-feeding channels under a pressure of 0.3 to 500 MPa, the solutions being capable of inducing a chemical reaction when mixed, thereby producing an active material particle for a lithium ion battery or an active material precursor particle for a lithium ion battery; and mixing the plurality of raw material solutions at a junction of the raw material-feeding channels to induce the chemical reaction, thereby continuously producing an active material particle for a lithium ion battery or producing an active material precursor particle for a lithium ion battery.

First claim

1 - 8 . (canceled)

9 . A method for producing an active material particle for a lithium ion battery, the method comprising steps of:
flowing a plurality of raw material solutions into respective raw material-feeding channels under a pressure of 0.3 to 500 MPa, the solutions being capable of inducing a chemical reaction when mixed, thereby producing an active material particle for a lithium ion battery or an active material precursor particle for a lithium ion battery; and mixing the plurality of raw material solutions at a junction of the raw material-feeding channels to induce the chemical reaction, thereby continuously producing an active material particle for a lithium ion battery or producing an active material precursor particle for a lithium ion battery.

10 . The method for producing an active material particle for a lithium ion battery according to claim 9 , wherein a channel diameter immediately before the junction of the raw material-feeding channels is from 0.05 to 3 mm.

11 . The method for producing an active material particle for a lithium ion battery according to claim 9 , wherein, near the junction of the raw material-feeding channels, a turbulent flow is imparted to the raw material solutions after joining.

12 . The method for producing an active material particle for a lithium ion battery according to claim 9 , wherein the plurality of raw material solutions are temperature-adjusted before mixing such that a temperature not less than a temperature necessary for induction of the chemical reaction is achieved immediately after mixing at the junction of the raw material-feeding channels.

13 . The method for producing an active material particle for a lithium ion battery according to claim 10 , wherein the plurality of raw material solutions are temperature-adjusted before mixing such that a temperature not less than a temperature necessary for induction of the chemical reaction is achieved immediately after mixing at the junction of the raw material-feeding channels.

14 . The method for producing an active material particle for a lithium ion battery according to claim 11 , wherein the plurality of raw material solutions are temperature-adjusted before mixing such that a temperature not less than a temperature necessary for induction of the chemical reaction is achieved immediately after mixing at the junction of the raw material-feeding channels.

15 . The method for producing an active material particle for a lithium ion battery according to claim 9 , wherein the chemical reaction includes a neutralization reaction.

16 . The method for producing an active material particle for a lithium ion battery according to claim 12 , wherein the chemical reaction includes a neutralization reaction.

17 . The method for producing an active material particle for a lithium ion battery according to claim 13 , wherein the chemical reaction includes a neutralization reaction.

18 . The method for producing an active material particle for a lithium ion battery according to claim 14 , wherein the chemical reaction includes a neutralization reaction.

19 . The method for producing an active material particle for a lithium ion battery according to claim 9 , wherein a solvent of the raw material solution is a coordinating solvent.

20 . The method for producing an active material particle for a lithium ion battery according to claim 12 , wherein a solvent of the raw material solution is a coordinating solvent.

21 . The method for producing an active material particle for a lithium ion battery according to claim 13 , wherein a solvent of the raw material solution is a coordinating solvent.

22 . The method for producing an active material particle for a lithium ion battery according to claim 14 , wherein a solvent of the raw material solution is a coordinating solvent.

21 . A method for producing a cathode active material particle for a lithium ion battery, wherein, in the method for producing an active material particle for a lithium ion battery according to claim 9 , the plurality of raw material solutions include a first raw material solution containing a lithium compound and a second raw material solution containing a transition metal and induce the chemical reaction to continuously produce an active material particle for a lithium ion battery.

24 . A method for producing a cathode active material particle for a lithium ion battery, wherein, in the method for producing an active material particle for a lithium ion battery according to claim 12 , the plurality of raw material solutions include a first raw material solution containing a lithium compound and a second raw material solution containing a transition metal and induce the chemical reaction to continuously produce an active material particle for a lithium ion battery.

25 . A method for producing a cathode active material particle for a lithium ion battery, wherein, in the method for producing an active material particle for a lithium ion battery according to claim 9 , the active material precursor particle for a lithium ion battery is a transition metal salt particle, the plurality of raw material solutions include a first raw material solution containing a transition metal constituting the transition metal salt particle and a second raw material solution containing a counter ion forming a salt with the transition metal, and the method includes a step of inducing the chemical reaction to continuously produce an active material precursor particle for a lithium ion battery.

26 . A method for producing a cathode active material particle for a lithium ion battery, wherein, in the method for producing an active material particle for a lithium ion battery according to claim 12 , the active material precursor particle for a lithium ion battery is a transition metal salt particle, the plurality of raw material solutions include a first raw material solution containing a transition metal constituting the transition metal salt particle and a second raw material solution containing a counter ion forming a salt with the transition metal, and the method includes a step of inducing the chemical reaction to continuously produce an active material precursor particle for a lithium ion battery.

Assignees

• Toray Industries

Inventors

• Kawamura Hiroaki
• Tabayashi Miyuki
• Kubota Yasuo

Classifications

• C01G53/00

  Compounds of nickel · CPC title

• H01M4/525

  of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• H01M4/5825 Primary

  Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines · CPC title

• C01G53/50

  of the type (MnO2)n-, e.g. Li(NixMn1-x)O2 or Li(MyNixMn1-x-y)O2 · CPC title