Samsung Sdi Co., Inc.

Hoyong An

Seung-Hun Han

Kijun Kim

Heeeun Yoo

Yeonhee Yoon

Kyuseo Lee

Jaehwan Ha

Junghyun Nam

Dongmyung Lee

Dongsik Yoon

Yiseop Ahn

Hyunhee Kim

Junghyun Lee

Myungduk Lim

Hyesun Jung

Suhyun Kim

A rechargeable lithium battery includes a negative electrode including a negative current collector, a negative active material layer disposed on the negative current collector, and a negative electrode functional layer disposed on the negative active material layer; and positive electrode including a positive current collector and a positive active material layer disposed on the positive current collector, wherein the negative electrode functional layer includes flake-shaped polyethylene particles, the positive active material layer includes a first positive active material including at least one of a composite oxide of a metal selected from cobalt, manganese, nickel, and a combination thereof and lithium, a second positive active material including a compound represented by Chemical Formula 1, and carbon nanotubes, and the carbon nanotubes have an average length of 30 &#x3bc;m to about 100 &#x3bc;m.LiFeMPO&#x2003;&#x2003;Chemical Formula 1 In Chemical Formula 1, 0.90&#x2264;a&#x2264;1.8, 0&#x2264;x1&#x2264;0.7, and M is Mn, Co, Ni, or a combination thereof.

Rechargeable lithium battery

An embodiment of the present invention provides an electrode assembly in which a first electrode having a first electrode coated region and a first electrode uncoated region, a separator, and a second electrode having a second electrode coated region and a second electrode uncoated region are stacked and wound around a winding axis, wherein the first electrode coated region may include a first substrate, a first small electrode portion including first active material layers formed on both surfaces of the first substrate, and a second small electrode portion including a first active material layer formed on the other surface of the first substrate in which one surface thereof is exposed, and the second small electrode portion may be positioned at a first curved portion formed by first winding of the electrode assembly.

Electrode assembly, and rechargeable battery comprising same

Growing community of inventors

Yongin-si, South Korea

Hoyong An