Korea Advanced Institute of Science and Technology

University of California

Il-Doo Kim

Won-Tae Koo

Sang-Joon Kim

Ji Su Jang

Seon-Jin Choi

Ki Ro Yoon

Jun Kyu Kim

Min Soo Kim

Reginald M Penner

Dae Ho Yoon

WooChul Jung

Dong-Ha Kim

Jun Hwe Cha

Yong Jin Jeong

Chan Hoon Kim

Won Tae Hwang

Jin Gook Bae

Ji Won Jung

Wontae Koo

Jisu Jang

Jaehyeong Bae

Chanhoon Kim

Tae-Gwang Yun

Ji-Soo Jang

Su Ho Cho

Yong Joon Park

Provided are a composite structure, in which metal nanoparticle-perovskite oxide is bound to metal oxide supports (i.e., sensing materials), and a preparation method thereof. The composite structure has improved durability, in which metal nanoparticles uniform in size are evenly distributed on the surface of perovskite oxide. Provided is also a high-performance gas sensor having excellent target gas detection performances by including the composite structure.

Method of manufacturing metal oxide gas sensor functionalized by multicomponent alloy nanoparticle-perovskite composite catalyst

Embodiments of the disclosure relate to a novel concept complex generator enabling high-efficient power generation by applying a polar solution to a MXene layer-coated hydrophilic fiber membrane-based complex generator, and a manufacturing method thereof. Specifically, a MXene layer-coated hydrophilic fiber membrane-based electrical energy generation device uniformly applies MXene particles to fiber strand surfaces of hydrophilic fiber membranes through a dipping process to form a MXene layer.

MXene coated hydrophilic fiber membrane-based complex generator and manufacturing method thereof

Systems and methods using engineered nanofiltration layers to facilitate acceleration of palladium nanowire hydrogen sensors. The sensors include a metal-organic framework (MOF) assembled on palladium (Pd) nanowires (NWs) for highly selective and ultra-fast H2 molecule detection.

Nanowire based hydrogen sensors

Disclosed are a member for a gas sensor, a gas sensor using the member, and a method of fabricating the same. Specifically, disclosed are a member for a gas sensor using a metal oxide nanofiber material in which nanocatalysts have been uniformly bound and functionalized using chitosans with which nanoparticle catalysts have been combined, a gas sensor using the member, and a method of fabricating the same.

Metal oxide nanofibers including functionalized catalyst using chitosan-metal complexes, and member for gas sensor, and gas sensor using the metal oxide nanofibers, and method of fabricating the same

Disclosed herein is a complex generator including a hydrophilic fiber membrane coated with an adsorption material. Electrical energy is generated in such a manner that the adsorption material is adsorbed onto a polar solvent in some region of the hydrophilic fiber membrane by asymmetrical wetting of the polar solvent for the hydrophilic fiber membrane.

Apparatus for generating electrical energy based on hydrophilic fiber membrane and method of fabricating same

Disclosed are a gas sensor member, a gas sensor using the same, and manufacturing methods thereof, and specifically, a gas sensor member using a one-dimensional porous metal oxide nanotube composite material having a double average pore distribution in which mesopores (0.1 nm to 50 nm) and macropores (50 nm to 300 nm) are simultaneously formed on the surface of a nanotube through decomposition of a spherical polymer sacrificial template and continuous crystallization and diffusion of a metal oxide and a nanoparticle catalyst embedded in an apoferritin is uniformly loaded in the inside and on the outer wall and inner wall of a one-dimensional metal oxide nanotube through a high-temperature heat treatment, a gas sensor using the same, and manufacturing methods thereof are disclosed.

Member for gas sensor, having a metal oxide semiconductor tube wall with micropores and macropores, gas sensor, and method for manufacturing same

Disclosed is a 1D nanofibers quasi-aligned, grid structure cross-laminated, and pore distribution and size controlled 3D polymer nanofiber membrane, and manufacturing method thereof. A 3D polymer nanofiber membrane controlled in pore size and porosity is formed by employing an electrospinning pattern forming apparatus that includes double insulating blocks quasi-aligns nanofibers in a specific direction by transforming an electric field and includes a current collector rotatable in 90&#xb0;. Additionally, the 3D polymer nanofiber membrane may be used for air filters, separator, water filters, cell culture membranes, and so on by allowing various properties thereto through a functional surface coating.

3D polymer nanofiber membrane composed of 1D individual polymer nanofibers which are quasi-aligned and cross-laminated like grid structure with functions of controlling pore distribution and size, and manufacturing method thereof

Disclosed is an electrode for lithium-air batteries without using a binder and a carbon additive and a method of manufacturing the same, and more specifically, provided is a nanofiber network-based current collector-catalyst monolithic porous air electrode which has an improved specific surface area and high air permeability as the energy density per weight is increased and the diameter, porosity, and thickness of the nanofibers are controlled by utilizing a significantly light polymer and carbon based material.

Current collector-catalyst monolithic three-dimensional nanofiber network for Li-air batteries and manufacturing method thereof

A lithium-air battery catalyst having a 1D polycrystalline tubes structure of a ruthenium oxide-manganese oxide complex includes the ruthenium oxide-manganese oxide complex having at least one polycrystalline tubes structure among a core fiber-shell patterned nanotubes structure and a double walls patterned composite double tubes structure, and the ruthenium oxide-manganese oxide complex is formed as an air electrode catalyst.

Lithium-air battery catalyst having 1D polycrystalline tube structure of ruthenium oxide-manganese oxide complex, and manufacturing method thereof

Disclosed are polymer nanofiber sensors for detecting gas, which generates visible color change although a specific gas having a concentration of less than 1 ppm is exposed to the sensor in a short time, in which it is impossible to detect the gas using existing colorimetric sensors, through securing high surface area and porosity, and a method of the same.

Colorimetric sensor material for detecting hydrogen sulfide gas, which includes one-dimensional polymer nanofiber coupled to lead acetate particles obtained by high temperature stirring and quenching, and method of the same

The inventive concepts relate to a member for a gas sensor, a gas sensor using the same, and a method of manufacturing the same. More particularly, the inventive concepts relate to a gas sensor member using a porous semiconductor metal oxide complex nanofiber functionalized by uniformly distributing porous first metal oxide particles, including metal nanoparticle catalysts synthesized using a metal-organic framework, in the inside and on a surface of a second metal oxide nanofiber, a gas sensor using the same, and a method of manufacturing the same.

Porous semiconductor metal oxide complex nanofibers including nanoparticle catalyst functionalized by nano-catalyst included within metal-organic framework, gas sensor and member using the same, and method of manufacturing the same

Provided are conductive single crystal silicon particles coated with highly conductive carbon containing nanopores and an ultrathin metal film, a high capacity anode material including the same, and a preparing method thereof. The anode material includes conductive single crystal silicon particles each on which at least one element selected from group-III and group-V elements is doped; a thin metal layer formed to coat the surface of each of the conductive single crystal silicon particles; and a highly conductive carbon coating layer formed on the thin metal layer, wherein nanopores are formed between the conductive single crystal silicon particle and the carbon coating layer.

Conductive single crystal silicon particles coated with highly conductive carbon containing nanopores and ultrathin metal film, high capacity lithium anode material including the same, and preparing method thereof

Growing community of inventors

Daejeon, South Korea

Il-Doo Kim