Korea Advanced Institute of Science and Technology

Korea Research Institute of Chemical Technology

Jeung Ku Kang

Hyung Mo Jeong

Jung Hoon Choi

Il Woo Ock

Kyung Min Choi

Dong Ki Lee

Yong-Hoon Kim

Jung Woo Lee

Jong Ho Won

Yoon Jeong Choi

Beom-Sik Kim

Won Ho Choi

Jae Won Choi

Weon Ho Shin

Gyu Heon Lee

Youngkook Kwon

Dong Gyu Park

Byeong Cheul Moon

Keon-Han Kim

Gede Widia Pratama Adhyaksa

Jung Hyo Park

Ji Ii Choi

Saji Augustine

Seong Ho Yang

The present disclosure relates to a sub-nanometric particles-metal organic framework complex including a multi-shell hollow metal organic framework (MOF) and sub-nanometric particles (SNPs), and a method of preparing the same.

Sub-nanometric particles-metal organic framework complex including multi-shell hollow metal organic framework and subnanometric particles

The present disclosure relates to a pliable carbonaceous pocket composite structure including various particles encapsulated within pliable carbonaceous pockets formed by carbonaceous sheets, a method for preparing the pliable carbonaceous pocket composite structure which enables ultrafast mass production of the pliable carbonaceous pocket composite structure, an electrode including the pliable carbonaceous pocket composite structure, and an energy storage device including the electrode.

Pliable carbonaceous pocket composite structure, method for preparing the same, electrode, including the same, and energy storage device including the electrode

The present disclosure relates to a pseudocapacitive conductive composite including conductive polymer chains formed on a graphene sheet, a composite for an electrode including sub-nanoscale particles of a metal oxide or metal sulfide formed on a graphene sheet, and an aqueous hybrid capacitor including the composites as electrode active materials.

Pseudocapacitive conductive composite, composite including sub-nanoscale particles, and aqueous hybrid capacitor including the same as electrode active material

The present disclosure relates to a particle including at least one atomic-scale channel formed on a surface of the particle or on a surface and inside of the particle; a catalyst including the particle, particularly a catalyst for efficient and selective electrochemical conversion of carbon dioxide into high value-added Cfuel; and a method of preparing the particle.

Particle including atomic-scale channel, method of preparing the same, and catalyst including the same

The present invention discloses a method for improving solar energy conversion efficiency using metal oxide photocatalysts having an energy band of core-shell structure for ultraviolet (UV) ray and visible light absorption, comprising a first process of forming a nanoparticle thin film layer; a second process of preparing a core-shell metal oxide on metal oxide nanoparticles by a plasma reaction under a hydrogen and nitrogen gas atmosphere, and a third process of depositing a transition metal on surfaces of core-shell metal oxide nanoparticles to produce a photocatalyst for energy conversion. A great amount of oxygen vacancies is formed in a shell region by the core-shell metal oxide to achieve effects of improving transfer ability of electron-hole pairs excited by light, and extending a wavelength range of absorbable light to a visible light region by changing a band-gap structure.

Method for improving solar energy conversion efficiency using metal oxide photocatalysts having energy band of core-shell for ultraviolet ray and visible light absorption and photocatalysts thereof

Disclosed is a metal-organic framework composite including a host metal-organic framework, and nano metal-organic frameworks embedded in the host metal-organic framework. The host metal-organic framework and the nana metal-organic frameworks include different metals and organic ligands. The metal-organic framework composite has a structure in which the nano metal-organic frameworks are embedded in the host metal-organic framework. Due to this structure, defects are formed at the interfaces between the host metal-organic framework and the nano metal-organic frameworks, enabling the application of the metal-organic framework composite to gas storages with greatly improved gas storage efficiency. The metal-organic framework composite can be used as a gas adsorbent with very high efficiency due to its very large specific surface area. Also disclosed are a method for producing the metal-organic framework composite and a gas storage using the metal-organic framework composite.

Metal-organic framework composite with nano metal-organic frameworks embedded in host metal-organic framework, method for producing the metal-organic framework composite and gas storage including the metal-organic framework composite

Disclosed is a technique for fabricating a bio-photovoltaic cell which includes coupling graminoids extracted from natural grasses to a semiconductor electron acceptor, on which plasmonic silver nanoparticles are aligned, by using an organic ligand material. More particularly, disclosed is a technique for fabricating a new renewable energy generation device useable for fabrication of high efficiency bio-photovoltaic cells by improving a photo-electron generation rate of graminoids through a surface plasmon effect of silver nanoparticles and increasing an effective photo-electron amount transferred to the electron acceptor due to optimized bonding between a photo sensitizer and an electron acceptor.

Method for fabricating a high efficiency bio-photovoltaic cells by using plasmonic silver nanoparticles and natural extracted graminoids

Disclosed are a novel hydrogen storage material with enhanced hydrogen storage capacity prepared by doping an organic framework material with light metal cations, and a method of using the same for hydrogen storage. The present inventive material has at least one phenyl group at each face of a triangular building unit, which is doped with metal cations such as alkali metal cations, alkali-earth metal cations, etc., so that the material exhibits greatly improved capacity of hydrogen absorption and desorption at room temperature and can provide hydrogen storage materials practically adapted for fuel batteries useable even at room temperature.

Metal cation-doped covalent organic framework derivatives for hydrogen storage and method of using the same

Disclosed are partially deactivated metal catalysts useful for modifying structures of nanomaterials. The present invention is also directed to a method for preparing the partially deactivated metal catalysts, which comprises patterning a substrate with micelles containing iron nanoparticles, removing the micelles from the patterned substrate to deposit the iron nanoparticles thereon, nitriding the iron nanoparticles using a nitrogen plasma, and exposing the nitrided iron nanoparticles to a mixture of ethanol and nitric acid to remove iron from the surface of the nitrided nanoparticles. The iron nitride metal catalyst with a nano-size according to the present invention comprises a core that includes deactivated iron nitride and an active shell surrounding the core. Thus, when preparing a carbon nanotube, the metal catalyst can be effectively used to control the number of walls formed in the carbon nanotube.

Growing community of inventors

Daejeon, South Korea

Jeung Ku Kang