Electrode structure for lithium secondary battery and lithium secondary battery having the electrode structure

Patent metadata

Field	Value
Publication number	US-10141576-B2
Application number	US-201615000369-A
Country	US
Kind code	B2
Filing date	Jan 19, 2016
Priority date	Jan 19, 2015
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

There is provided an electrode for a lithium secondary battery. The electrode include a current collector; nanoparticles distributed on a surface of the current collector, each of the nanoparticles including a transition metal or an oxide of the transition metal; and an active material layer disposed on a surface of the current collector having the nanoparticles distributed thereon. This electrode may be employed as a negative electrode for the lithium second battery, to improve a capacity of the lithium second battery.

First claim

What is claimed is:

1. An electrode for a lithium battery, the electrode comprising:
a current collector;
nanoparticles distributed on the current collector such that 5 to 95% of an entire surface area of a plane of the current collector is exposed, each of the nanoparticles comprising a transition metal or an oxide of the transition metal; and
an active material layer disposed on the current collector.

2. The electrode of claim 1 , wherein the active material layer comprises a negative electrode active material.

3. The electrode of claim 1 , wherein at least some of the nanoparticles comprise an oxide of at least one selected from a group consisting of titanium (Ti), vanadium (V), chrome (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), an alloy thereof, and a composite thereof.

4. The electrode of claim 1 , wherein
at least some of the nanoparticles comprises a core and a shell at least partially coating the core,
the shell is made of an oxide of the core material, and
the core material comprises at least one selected from a group consisting of titanium (Ti), vanadium (V), chrome (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), an alloy thereof, and a composite thereof.

5. The electrode of claim 1 , wherein
at least some of the nanoparticles comprise a core and a shell at least partially coating the core,
the shell is made of a carbon-based material, and
the core is made of at least one selected from a group consisting of titanium (Ti), vanadium (V), chrome (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), an alloy thereof, and a composite thereof.

6. A lithium battery, comprising:
a negative electrode comprising a negative electrode current collector, nanoparticles distributed on the current collector, and a negative electrode active material layer disposed on the current collector;
a positive electrode comprising a positive electrode current collector opposite the negative electrode current collector, and a positive electrode active material layer disposed on the positive electrode current collector so as to face the negative electrode active material layer; and
an electrolyte disposed between the negative and positive electrodes,
wherein at least some of the nanoparticles comprise a core and a shell at least partially coating the core,
wherein the shell is made of a carbon-based material, and
wherein the core is made of at least one selected from a group consisting of titanium (Ti), vanadium (V), chrome (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), an alloy thereof, and a composite thereof.

7. The battery of claim 6 , wherein others of the nanoparticles comprise an oxide of at least one selected from a group consisting of titanium (Ti), vanadium (V), chrome (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), an alloy thereof, and a composite thereof.

8. The battery of claim 6 , wherein others of the nanoparticles comprise a another core and another shell at least partially coating the another core, the another shell being made of an oxide of the core material.

9. The battery of claim 6 , wherein the core is made of at least one selected from a group consisting of vanadium (V), chrome (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), an alloy thereof, and a composite thereof.

10. The battery of claim 6 , wherein the core is not made of an oxide.

Assignees

• Research & Business Found Sungkyunkwan Univ

Inventors

• Seo Su-Jeong
• Song Young-Il
• Park Jung-Kab
• Kim Tae-Yoo
• Son Hwa-Jin
• Shin Jin-Ha
• Lee Jungwoo
• NA Youngil
• Cho Younglae
• Park Jung-Ho
• Baeg Seung-Bin
• Ahn Byung-Wook
• Yun Sook-Young

Classifications

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M4/66

  Selection of materials · CPC title

• H01M4/667

  in the form of layers, e.g. coatings · CPC title

• H01M4/663

  containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres · CPC title

• H01M4/661 Primary

  Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title