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

Patent metadata

Field	Value
Publication number	US-2016344021-A1
Application number	US-201615000369-A
Country	US
Kind code	A1
Filing date	Jan 19, 2016
Priority date	Jan 19, 2015
Publication date	Nov 24, 2016
Grant date	—

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

1 . A electrode for a lithium secondary battery, the electrode comprising:
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.

2 . (canceled)

3 . The electrode of claim 1 , wherein the active material layer includes a negative electrode active material for the lithium second battery.

4 . The electrode of claim 1 , wherein at least a portion of the nanoparticles comprises particles including 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.

5 . The electrode of claim 1 , wherein at least a portion of the nanoparticles comprises particles, each particle including a core and a shell at least partially coating the core, the shell being made of an oxide of the core material,
wherein the core material includes 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 . The electrode of claim 1 , wherein at least a portion of the nanoparticles comprises particles, each particle including a core and a shell at least partially coating the core, the shell being made of a carbon-based material,
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 electrode of claim 1 , wherein the nanoparticles are distributed on a plane such that about 40 to 95% of the plane is exposed.

8 . A lithium secondary battery comprising:
a negative electrode comprising a negative electrode current collector, nanoparticles distributed on a surface of the current collector, and a negative electrode active material layer disposed on a surface of the current collector having the nanoparticles distributed thereon, wherein each of the nanoparticles includes a transition metal or an oxide of the transition metal; 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.

9 . (canceled)

10 . The battery of claim 8 , wherein at least a portion of the nanoparticles comprises particles including 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.

11 . The battery of claim 8 , wherein at least a portion of the nanoparticles comprises particles, each particle including a core and a shell at least partially coating the core, the shell being made of an oxide of the core material,
wherein the core material includes 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.

12 . The battery of claim 8 , wherein at least a portion of the nanoparticles comprises particles, each particle including a core and a shell at least partially coating the core, the shell being made of a carbon-based material,
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.

13 . A electrode for a lithium secondary battery, the electrode comprising:
a current collector; a graphene layer disposed on a surface of the current collector; nanoparticles distributed on a surface of the graphene layer, 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 graphene layer having the nanoparticles distributed thereon.

14 . The electrode of claim 13 , wherein the active material layer includes a negative electrode active material for the lithium second battery.

15 . The electrode of claim 13 , wherein at least a portion of the nanoparticles comprises particles including 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.

16 . The electrode of claim 13 , wherein at least a portion of the nanoparticles comprises particles, each particle including a core and a shell at least partially coating the core, the shell being made of an oxide of the core material,
wherein the core material includes 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.

17 . The electrode of claim 13 , wherein at least a portion of the nanoparticles comprises particles, each particle including a core and a shell at least partially coating the core, the shell being made of a carbon-based material,
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.

18 . The electrode of claim 13 , wherein the nanoparticles are distributed on a plane such that about 40 to 95% of the plane is exposed.

19 . A lithium secondary battery comprising:
a negative electrode comprising a negative electrode current collector, a graphene layer disposed on a surface of the current collector, nanoparticles distributed on a surface of the graphene layer, and a negative electrode active material layer disposed on a surface of the graphene layer having the nanoparticles distributed thereon, wherein each of the nanoparticles includes a transition metal or an oxide of the transition metal; 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.

20 . The battery of claim 19 , wherein at least a portion of the nanoparticles comprises particles including 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.

21 . The battery of claim 19 , wherein at least a portion of the nanoparticles comprises particles, each particle including a core and a shell at least partially coating the core, the shell being made of an oxide of the core material,
wherein the core material includes at least one selected from a group c

Assignees

• Univ Sungkyunkwan Res & Bus

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

• H01M4/502

  for non-aqueous cells (H01M4/505 takes precedence) · CPC title

• H01M4/523

  for non-aqueous cells (H01M4/525 takes precedence) · CPC title

• H01M4/38 Primary

  of elements or alloys · CPC title

• H01M4/131

  Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title

• H01M4/134

  Electrodes based on metals, Si or alloys · CPC title