Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Jeong-Hee Lee

Jae-young Choi

Chan-ho Pak

Tae-Hyung Kim

Jeong-na Heo

Shang-hyeun Park

Tae-won Jeong

In-Taek Han

Ho-suk Kang

Sang-Kook Mah

Dong-min Im

Tae-Gon Kim

Young-hee Lee

Kay-hyeok An

Eun-ju Ra

Jong-Hwan Park

Soo-suk Lee

Chan-Wook Baik

Deuk-seok Chung

Hang-woo Lee

Seok-gwang Doo

Soo-hyung Choi

Jung-Im Han

Jae-Sang Ha

Mee-Ae Ryu

You-jong Kim

Dae-Rae Kim

Kyoung-Won Min

Seoung-Jae Im

Yong-Nam Ham

A composite anode active material including metal core particles and carbon nanotubes that are covalently bound to the metal core particles, an anode including the composite anode active material, a lithium battery employing the anode, and a method of preparing the composite anode active material.

Composite anode active material, anode including the composite anode active material, lithium battery including the anode, and method of preparing the composite anode active material

A carbon nanotube, a method of preparing the same, a supported catalyst including the same, and a fuel cell using the supported catalyst are provided. The method of preparing the carbon nanotube includes: depositing a metal catalyst in single wall nanotubes and growing multi wall nanotubes over the single wall nanotubes using the metal catalyst. The carbon nanotubes of the present invention have satisfactory specific surface area and low surface resistance. Thus, the carbon nanotubes perform remarkably better than a conventional catalyst carrier. Accordingly, the carbon nanotubes, when used as a catalyst carrier of an electrode for a fuel cell, can improve the electrical conductivity of the fuel cell. In addition, a fuel cell employing the electrode has excellent efficiency and overall performance.

Carbon nanotubes, supported catalyst including the same, and fuel cell using the supported catalyst

Provided is a carbon nanofiber, wherein the carbon nanofiber has a surface oxygen content of at least 0.03 calculated by the formula: Oxygen content=[atomic percentage of oxygen/atomic percentage of carbon] using atomic percentages of oxygen and carbon, respectively calculated from an area of an oxygen peak having a binding energy of 524 to 540 eV, an area of a nitrogen peak having a binding energy of 392 to 404 eV, and an area of a carbon peak having a binding energy of 282 to 290 eV in X-ray photoelectron spectroscopy. The nanofibers have high surface oxygen content and may have metal catalyst nano particles densely and uniformly distributed on the outer wall of the carbon nanofibers, thereby having high electrochemical efficiency.

Method of preparing a nanofiber and a fuel cell including the nanofiber

Provided is a nanocomposite for the catalyst layer of a fuel cell electrode including: a carbon nanofiber; and metal catalyst particles uniformly applied to the surface of the carbon nanofiber, wherein the carbon nanofiber has a surface oxygen content of at least 0.03 calculated by the formula: Oxygen content=[atomic percentage of oxygen/atomic percentage of carbon] using atomic percentages of oxygen and carbon, respectively calculated from an area of an oxygen peak having a binding energy of 524 to 540 eV, an area of a nitrogen peak having a binding energy of 392 to 404 eV, and an area of a carbon peak having a binding energy of 282 to 290 eV in X-ray photoelectron spectroscopy. The nanocomposite according to the present invention has high surface oxygen content and has metal catalyst nano particles densely and uniformly distributed on the outer wall of the carbon fibers, thereby having high electrochemical efficiency. Thus, efficiency of fuel cells can be improved using the nanocomposite.

Nanocomposite for fuel cell, method of preparing the nanocomposite, and fuel cell including the nanocomposite

A carbon nanotube ('CNT') gas sensor includes a substrate, an insulating layer formed on the substrate, electrodes formed on the insulating layer, and CNT barriers that protrude higher than the electrodes in spaces between the electrodes to form gas detecting spaces. A method of manufacturing the gas sensor includes forming an insulating layer on a substrate, forming an electrode pattern on the insulating layer, coating CNT paste having a thickness greater than a thickness of electrodes in the electrode pattern on the electrodes and the insulating layer, and patterning and firing the carbon nanotube paste, including using a photolithography method, to retain only portions of the CNT paste coated on spaces between the electrodes.

Carbon nanotube gas sensor and method of manufacturing the same

Carbon nanotubes and metal particle-containing carbon nanotubes are provided. The carbon nanotubes have increased surface area. A method of cutting carbon nanotubes is also provided. According to the method, the dispersion properties of the carbon nanotubes are improved by simplifying the structural changes and/or surface modifications of the carbon nanotubes, thereby enabling insertion of an active substance into the inner walls of the carbon nanotubes and increasing the insertion efficiency.

Method of cutting carbon nanotubes

A method for driving a field emission device (FED) applies an alternating (AC) voltage as a driving voltage for emitting electrons in a field emission device comprising cathode electrode including an emitter and an anode electrode facing the cathode electrode. A method for aging an FED uses a constant voltage so that electrons cannot be emitted from the electron emission source, and an AC voltage so that electrons can be periodically emitted from the emitter when the FED is aged.

Method of driving field emission device (FED) and method of aging FED using the same

An electron emission source-forming composition includes a carbon-based material; a vehicle composed of a resin component and a solvent component; and at least one metal oxide with an average particle diameter in a range of 100 to 1,000 nm selected from AlO, TiO, and SiO. The electron emission source-forming composition is sintered under an air atmosphere during electron emission source formation. Therefore, carbon deposits after sintering and degradation of Carbon Nano-Tubes (CNTs) upon sintering can be remarkably reduced. As a result, the electron emission source formed using the composition has a high current density and the electron emission device using the electron emission source exhibits enhanced reliability.

Electron emission source, its method of fabrication, and an electron emission device using the electron emission source

A substrate, a cathode electrode formed on the substrate, a gate insulating layer which is formed on the cathode electrode and has a through hole corresponding to part of the cathode electrode, a gate electrode which has a gate hole corresponding to the through hole and is formed on the gate insulating layer, and an emitter formed on the gate electrode exposed to the bottom of the through hole. The emitter has a stack structure formed of a resistive material layer and an electron emission material layer containing a fine electron emission source formed on the resistive material layer.

Method of manufacturing a field emission device utilizing the sacrificial layer

A microwave oven includes a saucer holder, and a saucer used with the microwave oven. The saucer holder is provided on the external surface of the microwave oven. The saucer removably engages with the saucer holder. Thus, the microwave oven allows a user to easily carry a heated cup after a cooking process

Microwave oven with saucer holders

A microwave oven includes a saucer holder, and a saucer used with the microwave oven. The saucer holder is provided on the external surface of the microwave oven. The saucer removably engages with the saucer holder. Thus, the microwave oven allows a user to easily carry a heated cup after a cooking process.

A microwave oven has an auxiliary cooking device disposed within a cooking chamber for fixing foodstuffs to be cooked. The auxiliary cooking device includes a supporting base placed on the cooking chamber, a coupling member coupled on the supporting base, a main fixing bar on which relatively large foodstuffs are fixed, and a plurality of auxiliary fixing bars on which relatively small foodstuffs are fixed. The main fixing bar is supported on the supporting base or the coupling member. The auxiliary fixing bars are removably mounted on the coupling member.

Growing community of inventors

Yongin-si, South Korea

Jeong-Hee Lee