Storage battery electrode, manufacturing method thereof, storage battery, and electronic device

Patent metadata

Field	Value
Publication number	US-2024413342-A1
Application number	US-202418810764-A
Country	US
Kind code	A1
Filing date	Aug 21, 2024
Priority date	Oct 24, 2014
Publication date	Dec 12, 2024
Grant date	—

Abstract

In manufacture of a storage battery electrode containing graphene as a conductive additive, the efficiency of reduction of graphene oxide under mild conditions is increased, and cycle characteristics and rate characteristics of a storage battery are improved. Provided is a manufacturing method of a storage battery electrode. In the manufacturing method, a first mixture containing an active material, graphene oxide, and a solvent is formed; a reducing agent is added to the first mixture and the graphene oxide is reduced to form a second mixture; a binder is mixed with the second mixture to form a third mixture; and the third mixture is applied to a current collector and the solvent is evaporated to form an active material layer.

First claim

What is claimed is:

1 . A lithium-ion secondary battery comprising:
a positive electrode comprising an active material layer comprising:
an active material comprising a NiMn-based compound; and
a conductive additive; and
a negative electrode, wherein the conductive additive comprises at least two of particle-like, flake-like, needle-like, or fiber-like material.

Assignees

• Semiconductor Energy Lab

Inventors

• Ikenuma Tatsuya
• Kawakami Takahiro
• Momma Yohei
• Ochiai Teruaki

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M4/621

  Binders · CPC title

• H01M4/139

  Processes of manufacture · CPC title