Samsung Sdi Co., Inc.

Mihwa Yang

Minjae Kim

Jinhee Lee

Duckjae You

Hyo-Jung Song

Kyoseon Koo

Beomkwon Kim

Jeunggi Moon

Moonju Cho

An electrode including a current collector; an electrode active material layer on a surface of the current collector and including internal pores; an inner coating layer filled in the internal pores of the electrode active material layer and including an adhesive material; and an outer coating layer disposed on a surface of the electrode active material layer and including an adhesive material. A total weight of the inner coating layer and the outer coating layer per area of one surface of the current collector is about 0.1 g/mto about 0.7 g/m. In addition, the electrode active material layer has a porosity of about 13% to about 16% in a cross section having a depth of about 20 μm from the surface of the electrode active material layer to the current collector.

Electrode and rechargeable lithium battery including the same

A lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolyte located therebetween. The positive electrode active material includes a lithium cobalt-based active material and a lithium nickel cobalt-based active material, wherein the lithium cobalt-based active material is larger in size and amount than the lithium nickel cobalt-based active material, and the lithium nickel cobalt-based active material is a one-body positive electrode active material.

Positive electrode active material, positive electrode including the same, and lithium secondary battery employing the positive electrode

Growing community of inventors

Yongin-si, South Korea

Mihwa Yang