Samsung Sdi Co., Inc.

Yun-Suk Choi

Ji-Seong Han

Seung-Hee Park

Seung-sik Hwang

Duck-Chul Hwang

Soo-Seok Choi

Chung-Kun Cho

Sang-Mock Lee

Su-Suk Choi

Yong-Ju Jung

Il-Young Lee

Sang-Mock Legal/IP Team Samsung Sdi Co Ltd Lee

Seung-Sik Legal/IP Team Samsung Sdi Co Ltd Hwang

A rechargeable lithium battery includes a positive electrode having a positive active material to reversibly intercalate and deintercalate lithium ions, a negative electrode having a negative active material, and an electrolyte, wherein an arithmetic mean Ra of a surface roughness of the positive electrode is 155 to 419 nm, and an arithmetic mean Ra of a surface roughness of the negative electrode is 183 to 1159 nm after the rechargeable lithium battery is charged and discharged.

Rechargeable lithium battery with specific surface roughness of positive electrode and/or negative electrode

A positive electrode for a lithium-sulfur battery includes a positive active material including a sulfur-based compound, an electrically conductive material, an agent for increasing viscosity, and a binder. The agent is selected from a cellulose-based compound, an ionically conductive polymer, and a mixture thereof. The binder includes styrene-butadiene rubber.

Positive electrode for lithium-sulfur battery

A positive active material of a lithium-sulfur battery includes a sulfur-conductive agent-agglomerated complex in which a conductive agent particle is attached onto a surface of a sulfur particle having an average particle size less than or equal to 7 &#x3bc;m. The sulfur-conductive agent-agglomerated complex is manufactured by mixing a sulfur powder and a conductive agent powder to form a mixture, and milling the mixture.

Positive active material of a lithium-sulfur battery and method of fabricating same

A lithium battery including a lithium negative electrode, a positive electrode, a separator and an electrolyte. The lithium negative electrode is prepared by melting lithium metal under an inert gas atmosphere to prepare a liquid lithium metal and coating the liquid lithium metal on a current collector. The positive electrode includes a positive active material, an electrically conductive material, and a binder. The separator is placed between the positive and the negative electrodes, and the electrolyte is immersed in the positive and negative electrodes and separator, and includes a lithium salt and organic solvents.

Lithium battery having evenly coated negative electrode and method of manufacture thereof

Growing community of inventors

Cheonan, South Korea

Yun-Suk Choi