Abstract: Disclosed is a positive electrode for a lithium-sulfur battery. The positive electrode includes a sulfur-carbon composite as a positive electrode active material. The sulfur-carbon composite includes a porous carbonaceous material having a high porosity and high specific surface area. Therefore, when the sulfur-carbon composite is applied to a battery, the battery shows a reduced initial irreversible capacity and improved output characteristics and life characteristics.

Abstract: Disclosed is a positive electrode for a lithium-sulfur battery, including a sulfur-carbon composite as a positive electrode active material. The sulfur-carbon composite includes a porous carbonaceous material having a high specific surface area, and the total pore volume in the carbonaceous material and a volume of pores having a specific diameter are controlled to specific ranges. Also disclosed is a lithium-sulfur battery using the sulfur-carbon composite. The lithium-sulfur battery shows reduced initial irreversible capacity and improved output characteristics and life characteristics.

Abstract: A positive electrode for a lithium-sulfur battery is provided. The positive electrode includes a positive electrode active material comprising a first and second sulfur-carbon composites respectively comprising a first and a second carbonaceous materials having a different specific surface area and pore volume from each other, and provides reduced initial irreversible capacity and improved output characteristics and life characteristics of a secondary battery.

Abstract: A method for preparing a sulfur-carbon composite including a step of pretreating a carbon material is provided. The method is capable of removing water and other impurities from the carbon material effectively, and the sulfur-carbon composite obtained by the method used as a positive electrode active material of a lithium-sulfur battery provides improved sulfur supportability and over-voltage performance of the lithium-sulfur battery, reduced initial irreversible capacity of the positive electrode active material, and improved output characteristics and life characteristics.

Abstract: The present invention provides a pharmaceutical composition for inhibiting angiogenesis containing a plant-derived natural compound which can be effective for preventing or treating disorders or diseases associated with angiogenesis. The compound used as an active ingredient in the pharmaceutical composition of the present invention suppresses VEGF-induced angiogenic responses without cytotoxicity at a low concentration by inhibiting the expression of an anti-angiogenic factor (for example, VEGF), and thus remarkably improves the safety of a drug.

Abstract: The present invention provides a pharmaceutical composition for inhibiting angiogenesis containing a plant-derived natural compound which can be effective for preventing or treating disorders or diseases associated with angiogenesis. The compound used as an active ingredient in the pharmaceutical composition of the present invention suppresses VEGF-induced angiogenic responses without cytotoxicity at a low concentration by inhibiting the expression of an anti-angiogenic factor (for example, VEGF), and thus remarkably improves the safety of a drug.

Abstract: The present invention provides a pharmaceutical composition for inhibiting angiogenesis containing a plant-derived natural compound which can be effective for preventing or treating disorders or diseases associated with angiogenesis. The compound used as an active ingredient in the pharmaceutical composition of the present invention suppresses VEGF-induced angiogenic responses without cytotoxicity at a low concentration by inhibiting the expression of an anti-angiogenic factor (for example, VEGF), and thus remarkably improves the safety of a drug.