Electrode for lithium ion secondary batteries and lithium ion secondary battery

Patent metadata

Field	Value
Publication number	US-2021111411-A1
Application number	US-202017069841-A
Country	US
Kind code	A1
Filing date	Oct 13, 2020
Priority date	Oct 15, 2019
Publication date	Apr 15, 2021
Grant date	—

Abstract

A carbon layer consisting of carbon material is disposed on a surface of a foam porous body consisting of metal, and used as a collector. More specifically, an electrode for lithium ion secondary batteries includes a collector, and an electrode mixture filled into the collector, in which the collector is made to have a carbon layer consisting of carbon material on a surface of a foam porous body consisting of metal.

First claim

What is claimed is:

1 . An electrode for lithium ion secondary batteries,
wherein the electrode for lithium ion secondary batteries comprises a collector and an electrode mixture that is filled into the collector, wherein the collector has a carbon layer consisting of carbon material on a surface of a foam porous body consisting of metal.

2 . The electrode for lithium ion secondary batteries according to claim 1 , wherein the collector further has an oxide layer consisting of an oxide of the metal between the foam porous body and the carbon layer.

3 . The electrode for lithium ion secondary batteries according to claim 1 , wherein the foam porous body is a foam aluminum.

4 . The electrode for lithium ion secondary batteries according to claim 1 , wherein the carbon material is at least one selected from the group consisting of furnace black, Ketjen black and acetylene black.

5 . The electrode for lithium ion secondary batteries according to claim 1 , wherein the electrode for lithium ion secondary batteries is a positive electrode.

6 . The electrode for lithium ion secondary batteries according to claim 1 , wherein the carbon layer is formed by a gas phase method.

7 . The electrode for lithium ion secondary batteries according to claim 6 , wherein the gas phase method heats and brings a fluid into contact with a surface of the foam porous body.

8 . The electrode for lithium ion secondary batteries according to claim 7 , wherein the fluid is a hydrocarbon gas or alcohol vapor.

9 . The electrode for lithium ion secondary batteries according to claim 8 , wherein the hydrocarbon gas is methane gas or acetylene gas.

10 . The electrode for lithium ion secondary batteries according to claim 8 , wherein the alcohol vapor is methanol vapor.

11 . The electrode for lithium ion secondary batteries according to claim 1 , wherein the carbon layer is formed by a liquid phase method.

12 . A lithium ion secondary battery comprising: a positive electrode; a negative electrode; and a separator or solid-state electrolyte layer disposed between the positive electrode and the negative electrode, wherein at least one among the positive electrode and the negative electrode is the electrode for lithium ion secondary batteries according to claim 1 .

13 . The electrode for lithium ion secondary batteries according to claim 2 , wherein the foam porous body is a foam aluminum.

14 . The electrode for lithium ion secondary batteries according to claim 2 , wherein the carbon material is at least one selected from the group consisting of furnace black, Ketjen black and acetylene black.

15 . The electrode for lithium ion secondary batteries according to claim 3 , wherein the carbon material is at least one selected from the group consisting of furnace black, Ketjen black and acetylene black.

16 . The electrode for lithium ion secondary batteries according to claim 2 , wherein the electrode for lithium ion secondary batteries is a positive electrode.

17 . The electrode for lithium ion secondary batteries according to claim 3 , wherein the electrode for lithium ion secondary batteries is a positive electrode.

18 . The electrode for lithium ion secondary batteries according to claim 4 , wherein the electrode for lithium ion secondary batteries is a positive electrode.

Assignees

• Honda Motor Co Ltd
• Sumitomo Electric Industries

Inventors

• Tanaami Kiyoshi
• Isogai Yuji
• Aoyagi Shintaro
• Sakai Hideki
• Okuno Kazuki
• Hosoe Akihisa
• Senoo Kikuo
• Takebayashi Hiroshi

Classifications

• Y02E60/10

  Energy storage using batteries · 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

• H01M4/0421

  involving vapour deposition · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• H01M50/409

  Separators, membranes or diaphragms characterised by the material · CPC title