Doping system, and method for manufacturing electrodes, batteries and capacitors

Patent metadata

Field	Value
Publication number	US-2019074143-A1
Application number	US-201716079937-A
Country	US
Kind code	A1
Filing date	Feb 24, 2017
Priority date	Feb 26, 2016
Publication date	Mar 7, 2019
Grant date	—

Abstract

Provided is a doping system in which an active material in a strip-shaped electrode precursor having a layer including an active material is doped with alkali metal. The doping system includes a doping tank, a conveying unit, a counter electrode unit, a connection unit, and a porous insulating member. The doping tank accommodates a solution including alkali metal ions. The conveying unit conveys the electrode precursor along a path passing through the inside of the doping tank. The counter electrode unit is accommodated in the doping tank. The connection unit electrically connects the electrode precursor and the counter electrode unit. The porous insulating member is disposed between the electrode precursor and the counter electrode unit, and is not in contact with the electrode precursor.

First claim

1 - 46 . (canceled)

47 . A doping system, comprising:
a doping tank configured to accommodate a solution including alkali metal ions; a conveying unit configured to convey a strip-shaped electrode precursor including an active material layer along a path passing through the doping tank; a counter electrode unit configured to be accommodated in the doping tank; a connection unit configured to electrically connect the electrode precursor and the counter electrode unit; and a porous insulating member disposed between the electrode precursor and the counter electrode unit and configured to be non-contact with the electrode precursor.

48 . The doping system according to claim 47 ,
wherein the conveying unit comprises a conductive conveying roller configured to convey the electrode precursor, and wherein the conveying roller is a part of the connection unit.

49 . The doping system according to claim 48 , further comprising:
an elastically deformable pressing unit configured to press the electrode precursor in a direction of the conveying roller.

50 . The doping system according to claim 47 , further comprising:
a cleaning unit configured to clean a surface of the conveying roller.

51 . The doping system according to claim 47 , further comprising:
a mask member which comprises an opening, is disposed between the electrode precursor and the counter electrode unit, and is configured to be conveyed in a direction identical to a direction of conveying the electrode precursor.

52 . The doping system according to claim 47 , wherein the porous insulating member has a plate shape.

53 . The doping system according to claim 47 , wherein a distance from a surface of the porous insulating member to the electrode precursor is in a range of 0.5 to 100 mm.

54 . The doping system according to claim 47 , wherein the counter electrode unit comprises a conductive substrate and an alkali metal-containing plate disposed on the conductive substrate.

55 . The doping system according to claim 47 , further comprising:
a tank moving unit configured to move the doping tank vertically relative to the counter electrode unit.

56 . The doping system according to claim 47 , further comprising:
a circulating filtration unit configured to circulate and filter the solution.

57 . The doping system according to claim 47 , wherein the electrode precursor has a non-formed portion in which the active material layer is not formed.

58 . A method for manufacturing an electrode, the method comprising:
obtaining a doped electrode by doping the active material layer with alkali metal using the doping system according to claim 47 .

59 . The method according to claim 58 , further comprising:
cleaning the doped electrode by a cleaning liquid including an aprotic solvent.

60 . A method for manufacturing a capacitor, the method comprising:
manufacturing an anode by the method according to claim 58 .

61 . A method for manufacturing a battery, the method comprising:
manufacturing an anode by the method according to claim 58 .

Assignees

• Jsr Corp

Inventors

• Naoi Masaya
• Kawada Yukihiro
• Yakushiji Hiroki
• Aita Kazunari
• Kokubo Terukazu

Classifications

• H01G11/50 Primary

  specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation · CPC title

• H01G11/86 Primary

  specially adapted for electrodes (carbonisation or activation of carbon for the manufacture of electrodes H01G11/34) · CPC title

• H01M4/1393

  of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title

• H01G11/06 Primary

  with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC] · CPC title

• H01M2004/027

  Negative electrodes · CPC title