Samsung Sdi Co., Inc.

Seung-Hee Park

Jea-Woan Lee

Se-Ho Park

Soo-Seok Choi

Tae-Gon Kim

Jae-Yul Ryu

Wan-Uk Choi

Joon-Sup Kim

Ji-Seong Han

Young-Ugk Kim

Soo-Mi Eo

Yun-Suk Choi

Chang-Keun Back

Yong-Bum Lee

Young-Kwang Cho

Jin-Hee Moon

Tae-gon Kim

Yi-Seop Ahn

Su-Suk Choi

Chan Hong

Hee-Joon Chun

Yu-Mi Ha

Hisaki Tarui

Young-Chang Lim

Yong-Ju Jung

Il-Young Lee

Chang-Kuen Back

A rechargeable battery includes: an electrode assembly including a separator between a first electrode and a second electrode each having uncoated regions and coated regions, and in which the separator, the first electrode, and the second electrode are spirally wound; a case that houses the electrode assembly; and a first electrode tab and a second electrode tab to be drawn outside of the case that are respectively coupled to the uncoated regions of the first electrode and the second electrode while maintaining a tab gap between the first electrode tab and the second electrode tab, where the first electrode tab is coupled to a gap uncoated region between the coated regions of the first electrode, and where in a thickness direction of the electrode assembly, in an area facing the first electrode tab, an internal side end uncoated region of the second electrode is located.

Rechargeable battery

A rechargeable battery includes a wound electrode assembly including a separator between a first electrode and a second electrode, the first and second electrodes each including uncoated regions and coated regions; a case accommodating the electrode assembly; and a first electrode terminal and a second electrode terminal respectively coupled to the first and second electrodes and extending from the case, an uncoated region of the first electrode including inner and outer uncoated regions of a terminal end portion located at an outermost side of the electrode assembly, and the second electrode including an outer uncoated region of a terminal end portion facing the inner uncoated region of the first electrode and an additional inner coated region at an opposite side of the outer uncoated region.

Rechargeable battery comprising first and second electrodes each comprising uncoated regions and coated regions

Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.

Rechargeable lithium battery

A lithium secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a current collector, an active material layer on the current collector and including an amorphous silicon oxide represented by SiO(0.95&#x3c;x&#x3c;1.7), and an SEI layer on the active material layer and including about 70 area % or more of protrusion parts having a size of about 5 nm to 300 nm during charging of the battery.

Lithium secondary battery

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

The present invention relates to a positive active material for a lithium-sulfur battery and a method of preparing a positive active material composition comprising the same, and the positive active material includes a sulfur compound, a conductive agent adhered to the sulfur compound, and a binder including at least one polymer, which is positioned between the sulfur compound and the conductive agent to bind the conductive agent to the sulfur compound. The capacity per active mass weight of the positive active material increases by 25 to 35%, and the positive active material has improved discharge potentials and discharge capacity at high rate.

Positive active material and positive active material composition for lithium-sulfur battery and method of preparing positive active material composition

Growing community of inventors

Yongin-si, South Korea

Seung-Hee Park