Lithium-air battery and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-10673108-B2
Application number	US-201715409020-A
Country	US
Kind code	B2
Filing date	Jan 18, 2017
Priority date	Jul 18, 2014
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A lithium-air battery is provided. The lithium-air battery includes a negative electrode including lithium, a positive electrode including catalyst particles for controlling whether to generate LiO2 as a discharge product and for controlling a generation amount of LiO2, the positive electrode using oxygen as a positive electrode active material, and an electrolyte and a separator which are disposed between the negative electrode and the positive electrode.

First claim

What is claimed is:

1. A method for manufacturing a lithium-air battery, the method comprising:
preparing a graphene oxide aqueous solution and a source material including a catalyst material, wherein the graphene oxide aqueous solution includes a graphene oxide having surface defects;
dissolving the source material in the graphene oxide aqueous solution to manufacture a source solution;
reducing the graphene oxide and the catalyst material of the source material at the same time by performing a hydrothermal reaction or a heating reflux reaction in the source solution, thereby manufacturing a complex of graphene and catalyst particles, wherein the surface defect of the graphene oxide serves as a functional group for combination of the catalyst particles and the graphene; and
manufacturing a positive electrode by using the complex, the positive electrode using oxygen as a positive electrode active material,
wherein when the catalyst material is iridium, the source material is iridium chloride hydrate.

2. The method of claim 1 , wherein generating LiO 2 as a discharge product and a generation amount of LiO 2 are controlled by an oxygen binding energy of the catalyst particles.

3. The method of claim 1 , wherein the positive electrode comprises the catalyst particles and a conductive structure supporting the catalyst particles.

Assignees

• Iucf Hyu

Inventors

• Lee Yunjung
• Sun Yangkook
• Park Jinbeom
• Jeong Yosub

Classifications

• Y02E60/128

  Cross-Sectional Technologies · mapped topic

• H01M4/8673

  Electrically conductive fillers · CPC title

• H01M4/925

  supported on carriers, e.g. powder carriers · CPC title

• H01M4/96

  Carbon-based electrodes · CPC title

• H01M4/38

  of elements or alloys · CPC title