Samsung Sdi Co., Inc.

Sejong University

Min-seuk Kim

Jae-young Choi

Duck-young Yoo

Jong-ki Lee

Jea-Woan Lee

Chung-Kun Cho

Do-young Seung

Kee-sun Sohn

Sang-Mock Lee

The invention relates to a red phosphor with a narrow full width at half maximum, having improved decay time and resolving afterglow phenomenon. The fluoride-based phosphor according to the invention is characterized in including a host having a composition of the following [Formula 1] including rubidium (Rb), cesium (Cs), silicon (Si) and fluorine (F) as constituent elements, and manganese (Mn) which is solid solution treated in the host as an activator:RbCsSiF&#x2003;&#x2003;[Formula 1] (where, 0&#x3c;x&#x3c;3).

Fluoride-based phosphors for light emitting device

Disclosed is a cathode electrode having a cathode active material layer stacked on a current collector. The cathode active material layer includes a porous conductive material having a surface coated with sulfur and/or a sulfur-containing organic compound and/or pores filled with sulfur and/or a sulfur-containing organic compound. A lithium secondary battery employing the cathode electrode also is disclosed. The cathode electrode is structurally stable during charging and discharging since the structure of the cathode active material layer can be maintained even at the phase transition of sulfur during charging and discharging.

Cathode electrode including a porous conductive material coated and/or filled with sulfur and/or a sulfur-containing organic compound and lithium battery containing the same

Disclosed is a negative electrode for a lithium sulfur battery. The negative electrode includes a lithium metal, a pre-treatment layer, and a protection layer for the lithium metal. The pre-treatment layer has a thickness of 50 to 5000 &#x212b; and includes a lithium ion conductive material with an ionic conductivity of at least 1&#xd7;10S/cm.

Negative electrode for lithium sulfur battery, method of preparing same and lithium sulfur battery comprising same

Provided is a cathode electrode including a current collector, and a cathode electrode active material layer laminated on the current collector, a method of making the cathode electrode, and a battery including the cathode electrode. The cathode electrode active material includes particles having a core-shell structure with a sulfur-containing active material core, a conductor coating disposed on a surface of the active material core, and a binder coating disposed on the conductor coating. A high-performance lithium sulfur battery can be manufactured using the cathode electrode, since sufficient bondability can be attained with only a small amount of a binder.

Cathode electrode, manufacturing method thereof and lithium sulfur battery using the same

A method of preparing nanosized spherical vanadium oxide particles, comprising preparing a vanadium ion-containing aqueous solution by dissolving a vanadium ion-containing material; adding at least one solvent selected from a non-protonic, polar organic solvent and a glycol solvent to the vanadium ion-containing aqueous solution and mixing the same; and aging the mixture.

Growing community of inventors

Seoul, South Korea

Min-seuk Kim