Industry-University Cooperation Foundation Hanyang University

Lg Chem, Ltd

Samsung Electronics Co., Ltd.

Sung-Hwan Han

Yang-Kyoo Han

Je-Gwon Lee

Kwan-Mook Kim

Dae-Won Sohn

Hyun-Hoon Song

Ji-soo Jeong

Joong-Hee Han

A positive active material for a lithium-sulfur battery is provided. The positive active material for a lithium-sulfur battery includes carbon layers and metal compound layers alternately and repeatedly stacked. Each of the metal compound layers includes molybdenum and sulfur. Sulfur of the positive active material for a lithium-sulfur battery is provided from the metal compound layer through a preliminary charge/discharge process.

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

A composite material is provided. The composite material includes carbon layers and metal compound layers alternately and repeatedly stacked. Each of the metal compound layers includes molybdenum and selenium. When the composite material is used as a positive active material for a lithium selenium secondary battery, selenium is separated from the metal compound layer through a preliminary charge/discharge process. In addition, the composite material may be used as negative active materials of a lithium ion battery and a lithium ion capacitor. Furthermore, the composite material may be used as an active material of a positive electrode of the lithium selenium secondary battery.

Composite material including selenium, method of fabricating the same, lithium ion and lithium selenium secondary batteries including the same, and lithium ion capacitor including the same

The present invention relates to an acrylamide-based mesoporous polymer and its preparation method, where the acrylamide-based mesoporous polymer is fabricated by a simple preparation method to have uniform minute pores controllable in pore size and thereby applicable to a wide variety of fields. The acrylamide-based mesoporous polymer includes at least one of a defined repeating unit and contains a plurality of pores having a diameter of 2.0 to 10.0 nm in the solid state.

Acrylamide-based mesoporous polymer and preparation method thereof

A technique for reporting faults of a base station in a digital cellular system, includes: a base station management unit having a table storing information of predetermined faults; and a base station including multiple devices, which detects the faults of the devices and reports addresses for accessing relevant fault messages of the table to the base station management unit.

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Seoul, South Korea

Sung-Hwan Han