Electronics and Telecommunications Research Institute

Nexeon Limited

Other

Korea Research Institute of Chemical Technology

Seon Hee Park

Moon Youn Jung

Soo Jun Park

Jee Hye Park

Young Tai Cho

Hee Young Seo

Seung Hwan Kim

Gun Yong Sung

Seung Chul Park

Yong Eui Lee

Chul Hwan Kim

Dae Sik Lee

Yong Gil Choi

Seunghwan Kim

Chul Huh

Kyung Hyun Kim

Wan Joong Kim

Jae Hun Choi

Dae Hee Kim

Chil Seong Ah

Hyeon-Bong Pyo

Hyun Woo Song

Bong Kyu Kim

Chan Yong Park

Ji Wook Jeong

Sooyeul Lee

Jeong Won Lee

Yo Han Choi

Hyun Sung Ko

Min Ho Kim

Ho Youl Jung

Myung Eun Lim

Jae Won Jang

Jong Cheol Hong

Sa Kwang Song

Sun Lee Bang

Chan Woo Park

Kwang Hyo Chung

Chang Geun Ahn

Dong-Ho Shin

Hyunsung Ko

Joon Ho Lim

In Bok Baek

Yong Won Jang

Ansoon Kim

Soo Yeul Lee

Chang Su Ryu

Sung Hee Park

Byoung Goo Jeon

Wanjoong Kim

Hyun Chul Jang

Tae Hyun Kim

Chi Hoon Jun

Han Young Yu

Sang Choon Ko

Young Jun Kim

Kyoung Su Ha

Moon Gyu Jang

Jong-Heon Yang

Joo Young Cheon

Chang-Geun Ahn

Ki Won Jun

Jong Min Park

Young Jae Lee

Jong Heon Yang

Yong Sun Yoon

Tae Youb Kim

Hyeon Bong Pyo

Young Jin Hong

Hyung Ju Park

Yun Jo Lee

Taeyoub Kim

An Soon Kim

Geun Jae Kwak

Min Joon Kim

Done Sik Yoo

Hwang Woon Lee

Eui Joon Song

Jin Mo Goo

Kyu Ho Song

Seung-Chan Baek

Minsuk Jeong

Ji-Wook Jeong

Rae Man Park

Min Young Cheong

Sung Hwan Kang

Tae Jin Yang

Chang Soo Ryu

HyeYoon Kim

JuHyun Jeon

Ju Hyun Jeon

Sooyeol Lee

Hyun Sook Lee

Sangkyung Lee

Jong Hun Lee

Seoung Chul Park

The present invention relates to a method for preparing silicon-based active material particles for a secondary battery and silicon-based active material particles. The method for preparing silicon-based active material particles according to an embodiment of the present invention comprises the steps of: providing silicon powder; dispersing the silicon powder into an oxidant solvent to provide a mixture prior to grinding; fine-graining the silicon powder by applying mechanical compression and shear stress to the silicon powder in the mixture prior to grinding to produce silicon particles; producing a layer of chemical oxidation on the fine-grained silicon particles with the oxidant solvent while applying mechanical compression and shear stress to produce silicon-based active material particles; and drying the resulting product comprising the silicon-based active material particles to yield silicon-based active material particles.

Method for preparing silicon-based active material particles for secondary battery and silicon-based active material particles

The present invention relates to a method for producing silicon-based active material particles for a secondary battery and silicon-based active material particles. A method for producing silicon-based active material particles for a secondary battery according to an embodiment of the present invention may comprise: a step of providing silicon powder; a step of providing a pre-pulverization mixture in which the silicon powder is dispersed in a solvent for dispersion comprising an antioxidant; a step of applying mechanical compression and shear stress to the silicon powder of the pre-pulverization mixture to refine the silicon powder, thereby forming silicon particles having an oxygen content controlled by the antioxidant; and a step of drying the resulting material comprising the silicon particles to obtain silicon-based active material particles.

Silicon-based active material particles for secondary battery and method for producing same

The present invention relates to a silicon-based anode active material and a method for manufacturing the same. The silicon-based anode active material according to an embodiment of the present invention comprises: particles comprising silicon and oxygen combined with the silicon, and having a carbon-based conductive film coated on the outermost periphery thereof; and boron doped inside the particles, wherein with respect to the total weight of the particles and the doped boron, the boron is included in the amount of 0.01 weight % to 17 weight %, and the oxygen is included in the amount of 16 weight % to 29 weight %.

Silicon-based anode active material and method for manufacturing same

The present invention relates to a silicon-based anode active material and a method of fabricating the same. The silicon-based anode active material according to an embodiment of the present invention comprises: particles comprising silicon and oxygen combined with the silicon, wherein a carbon-based conductive layer is coated with on outermost surface of the particles; and phosphorus doped in the particles, wherein a content of the phosphorus with respect to a total weight of the particles and the phosphorus doped in the particles have a range of 0.01 wt % to 15 wt %, and a content of the oxygen has a range of 9.5 wt % to 25 wt %.

Silicon-based anode active material and preparation method therefor

Provided is an anode active material for a secondary battery and a method of fabricating the anode active material. A silicon-based active material composite according to an embodiment of the inventive concept includes silicon and silicon oxide obtained by oxidizing at least a part of the silicon, and an amount of oxygen with respect to a total weight of the silicon and the silicon oxide is restricted to 9 wt % to 20 wt %.

Negative electrode active material for secondary battery and method for manufacturing same

The present invention relates to a silicon anode active material capable of high capacity and high output, and a method for fabricating the same. A silicon anode active material according to an embodiment of the present invention includes a silicon core including silicon particles; and a double clamping layer having a silicon carbide layer on the silicon core and a silicon oxide layer between the silicon core and the silicon carbide layer.

Silicon anode active material and preparation method therefor

Provided is a negative active material and a lithium secondary battery including the negative active material. The negative active material for a secondary battery includes silicon particles, wherein circularities of the particles are determined by equation 1 below, and the circularities are 0.5 or greater and 0.9 or less,Circularity=2()&#x2003;&#x2003;[Equation 1]

Negative electrode active material and lithium secondary battery comprising same

A Positional Scanning-Synthetic Peptide Combinatorial Library (PS-SPC) searching apparatus and method using Surface Plasmon Resonance (SPR) are provided. The method includes spotting and fixing each of a plurality of peptide pools to a top of one thin metal film, inputting specific materials to the top of the thin metal film, applying a TM-mode light to a bottom of the thin metal film and exciting SPR for the thin metal film, and detecting a TM mode reflected light reflected from the thin metal film and displaying the detected light as a two-dimensional image.

PS-SPCL searching apparatus and method using surface plasmon resonance

An apparatus and method for assisting medication are disclosed. The apparatus includes a medication box and a medication service device. The medication box includes a plurality of containers each storing a paper bag of medication, and discharges a paper bag of medication from a corresponding one of the containers using a rotational force of an electric motor, and detects whether the stored paper bag of medication is present or is discharged. The medication service device includes a situation detector detecting a status of a user based on user identification and signal strength included in a radio frequency signal, and a status of the medication box, a situation recognizer recognizing a medication situation, and a service executor generating a service for medication. The user who has to regularly take a paper bag of medication for a long time can be assisted to take an accurate dose of medication on time.

Medication service apparatus, medication box, and apparatus and method for assisting medication

The present invention relates to a catalyst for Fischer-Tropsch synthesis which has excellent heat transfer capability. This catalyst contains (1) central core particle or particles made of a heat transfer material (HTM) selected from the group consisting of a metal, a metal oxide, a ceramic, and a mixture thereof; and (2) outer particle layer which surrounds the central core particles and is attached to the surfaces of the central core particles by a binder material layer. The outer particle layer has a support and catalyst particles in a powder form containing metal particles disposed on the support. The catalyst having such a dual particle structure shows excellent heat transfer capability and, thus, exhibits high selectivity to a target hydrocarbon. Therefore, the catalyst of the present invention is useful in a fixed-bed reactor for Fischer-Tropsch synthesis for producing hydrocarbons from synthetic gas.

Catalyst for Fischer-Tropsch synthesis having excellent heat transfer capability

The present invention relates to a portable digital reader for urinalysis. The portable digital reader for reading an analysis target chip including a plurality of test areas, comprises: a main body including a light emitting section having light emitting elements for radiating light, an integral optical splitter for uniformly distributing the light from the light emitting section to each test area of the analysis target chip, a light receiving section for receiving light reflected from the each test area so as to convert the same to electric signals, and a measuring section for measuring concentration according to the electric signals obtained from the light receiving section; a main supporting body having the analysis target chip and assembled with the main body; and an auxiliary supporting body assembled between the analysis target chip and the main supporting body, including a groove for assembling the analysis target chip, and assembled with the main supporting body to be exchanged after use. Therefore, it is possible to prevent the reader from being contaminated with superfluous urine by forming a portion contacting a strip chip to be exchangeable and disposing a moisture absorption material to a portion for introducing the strip chip.

Portable digital reader for urinalysis

Provided is an ion beam treatment apparatus including the target. The ion beam treatment apparatus includes a substrate having a first surface and a second surface opposed to the first surface, and including a cone type hole decreasing in width from the first surface to the second surface to pass through the substrate, wherein an inner wall of the substrate defining the cone type hole is formed of a metal, an ion generation thin film attached to the second surface to generate ions by a laser beam incident into the cone type hole through the first surface and strengthen, and a laser that emits a laser beam to generate ions from the ion generation thin film and project the ions onto a tumor portion of a patient. The laser beam incident into the cone type hole is focused by the cone type hole and is strengthened.

Targets for generating ions and treatment apparatuses using the targets

The present invention relates to a portable digital reader for reading an analysis target chip including a plurality of test areas. The reader comprises: a light emitting section having light emitting elements for radiating light; an integral optical splitter for uniformly distributing the light from the light emitting section to each test area of the analysis target chip; a light receiving section for receiving light reflected from each test area so as to convert the same into electric signals; and a measuring section for measuring concentration according to the electric signals obtained from the light receiving section. Therefore, it is possible to prevent the generation of errors in signal measurement due to optical distribution failure by assembling branch sections of the optical splitter under the control of the number of the branch sections according to the number of test items in a test strip.

Growing community of inventors

Taejon, South Korea

Seon Hee Park