Positive electrode with lead member for electrochemical devices, method for producing same and electrochemical device

Patent metadata

Field	Value
Publication number	US-11063324-B2
Application number	US-201816120337-A
Country	US
Kind code	B2
Filing date	Sep 3, 2018
Priority date	Mar 22, 2016
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

An electrochemical device positive electrode with a lead member includes a positive electrode and a lead member attached to the positive electrode. The positive electrode includes a positive current collector, a carbon layer, and an active layer. The carbon layer is disposed on a surface of the positive current collector, and contains a conductive carbon material. The active layer is supported by the positive current collector via the carbon layer disposed between the active layer and the positive current collector, and contains a conductive polymer. The lead member is in contact with the carbon layer.

First claim

What is claimed is:

1. An electrochemical device positive electrode with a lead member, the electrochemical device positive electrode comprising:
a positive electrode; and
a lead member attached to the positive electrode, wherein:
the positive electrode includes:
a positive current collector;
a carbon layer that is disposed on a surface of the positive current collector, the carbon layer containing a conductive carbon material; and
an active layer that covers the carbon layer, the active layer containing a conductive polymer that is supported by the positive current collector via the carbon layer,

the carbon layer has an exposed surface that is exposed from the active layer,
the carbon layer includes a composite region of the conductive carbon material and the conductive polymer, and
the lead member is attached on the exposed surface of the carbon layer to be in contact with the composite region of the carbon layer.

2. The electrochemical device positive electrode with a lead member according to claim 1 , wherein the carbon layer disposed between the lead member and the positive current collector has a thickness of less than or equal to 5 μm.

3. An electrochemical device comprising:
the electrochemical device positive electrode with a lead member according to claim 1 ;
a negative electrode; and
a nonaqueous electrolytic solution.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Furusawa Shigetaka
• Ito Yasuyuki
• Nomoto Susumu
• Matsumura Nao

Classifications

• H01G11/86 Primary

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

• H01M50/536

  characterised by the method of fixing the leads to the electrodes, e.g. by welding · CPC title

• H01M50/533

  characterised by the shape of the leads or tabs · CPC title

• H01M50/534

  characterised by the material of the leads or tabs · CPC title

• H01G11/32

  Carbon-based · CPC title