Lg Chem, Ltd

Korea Advanced Institute of Science and Technology

Intelligent Synthetic Biology Center

Other

Woo Hyun Kim

Hong Kyu Park

Sun Sik Shin

Sun Chang Kim

Sun-Chang Kim

Sang Soon Choi

Seong Bae Kim

Eun Hee Lee

Wan Taek Im

Suk Chae Jung

Song Yi Yang

Byung Hyun Hwang

Gil Tsu Choi

Woo Ram Lee

Hyun Uk Kim

Dong Jin Kim

Hwa Seok Chae

Yi Rang Lim

Young Su Park

Yeon Hwa Lee

Myung Keun Park

Eung Ju Lee

Soo Hwan Lim

Dong Ryoung Kang

Jun Gil Kim

Gyeong Il Yoo

Na Ri Kim

Yeon Lee

A positive electrode active material is provided, including a lithium transition metal oxide containing nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium transition metal oxide has 60 mol % or more nickel (Ni) with respect the total number of moles of transition metal except lithium, and is doped with at least any one doping element selected from the group consisting of B, Zr, Mg, Ti, Sr, W, and Al. The positive electrode active material has an average particle diameter (D) of 4 μm to 10 μm after rolling at a rolling density of 3.0 g/cmto 3.3 g/cmand has the form of a single particle. A method of preparing the positive electrode active material, a positive electrode including the positive electrode active material, and a lithium secondary battery are also provided.

Positive electrode active material for lithium secondary battery and method of preparing the same

A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide has a layered crystal structure of space group R3m, includes the nickel (Ni) in an amount of 60 mol % or less based on a total amount of transition metals, includes the cobalt (Co) in an amount greater than an amount of the manganese (Mn), and is composed of single particles.

Positive electrode active material including single particles of lithium nickel composite transition metal oxide, method of preparing the same, and lithium secondary battery including the same

Provided is a method of manufacturing a positive electrode active material, which includes: (A) preparing a positive electrode active material precursor which includes a core portion including randomly aggregated primary particles and a shell portion surrounding the core portion and formed of primary particles oriented in a direction from a particle center to the outside and in which a ratio of a crystal grain size in the (100) plane to a crystal grain size in the (001) plane of the primary particles forming the shell portion is 3 or more; and (B) mixing the positive electrode active material precursor with a lithium-containing raw material and firing the mixture, wherein the lithium transition metal oxide has an average particle diameter (D) that is 0.01% to 20% reduced as compared to an average particle diameter (D) of the positive electrode active material precursor.

Method of manufacturing positive electrode active material

The present invention relates to a uridine diphosphate (UDP)-glycosyltransferase protein which has glycosylation activity for a hydroxyl group at the C-20 position of a protopanaxadiol (PPD)- or protopanaxatriol (PPT)-type ginsenoside, and a method for glycosylation of UDP using the same.

Method for glycosylation of ginsenoside using a glycosyltransferase derived from panax ginseng

A system for inspecting, fixing, or screening ammunition comprises an ammunition conveying track, a plurality of ammunition trays arranged on an outer surface of the ammunition conveying track, an ammunition inspector disposed at right and left sides of the ammunition conveying track, an ammunition fixer disposed downstream of the ammunition inspector at right and left sides of the ammunition conveying track, and an ammunition discharger disposed at an end point of the upper portion of the ammunition conveying track, ammunition cartridges being sequentially discharged through the ammunition fixer and the ammunition discharger, wherein at least one of the ammunition inspector and the ammunition fixer includes ammunition-shaped chambers and actuators, wherein the ammunition cartridges placed on the ammunition trays are moved horizontally and inserted into the chambers, and wherein the actuators horizontally move the ammunition cartridges inserted in the chambers back to the ammunition trays.

System for inspecting, fixing, or screening ammunition

The present invention relates to a novel uridine diphosphate (UDP)-glycosyltransferase, and particularly to a novel UDP-glycosyltransferase derived fromand use thereof, a method for preparing glycosylated ginsenoside by converting protopanaxadiol (PPD)-type ginsenoside using the UDP-glycosyltransferase, a composition for converting the PPD-type ginsenoside into glycosylated ginsenoside, comprising the UDP-glycosyltransferase, a transformant or a culture thereof as active ingredients, a method for enhancing the expression of the UDP-glycosyltransferase using MeJA (methyl jasmonate), and a composition for enhancing the expression of the UDP-glycosyltransferase, which comprises MeJA as an active ingredient.

UDP-glycosyltransferase derived from ginseng and use thereof

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Daejeon, South Korea

Woo Hyun Kim