Abstract: Disclosed is a method of controlling the operation of a fuel cell triple cogeneration system configured to supply power and cooling heat to a data center, the method including detecting change in a power load or a cooling heat load of the data center and adjusting electrical energy and cooling capacity of the fuel cell triple cogeneration system.

Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a single-crystal type positive electrode active material which has a uniform particle size distribution and high sharpness of the particle size distribution, and a lithium secondary battery including the same.

Abstract: A vehicle control apparatus is provided. The vehicle control apparatus comprising: a reception unit for recognizing a plurality of events comprising a first event and a second event, and receiving information of the plurality of events and information comprising a set speed of a vehicle and a current speed of the vehicle; a determination unit for determining whether a control starting condition is satisfied; a calculation unit for calculating a reference distance for control, calculating a target speed using the reference distance for control, and modifying the target speed; and a vehicle control unit for performing control comprising acceleration and deceleration so that the vehicle travels at the target speed when the control starting condition is satisfied.

Abstract: A positive electrode active material precursor particle and/or a positive electrode active material particle according to one embodiment of the present disclosure include a core portion and a shell portion, the core portion includes nickel (Ni) and aluminum (Al), the shell portion includes cobalt (Co), a mol % value of the nickel (Ni) of the core portion is greater than a mol % value of nickel (Ni) of the shell portion, a mol % value of the aluminum (Al) of the core portion is greater than a mol % value of aluminum (Al) of the shell portion, and a mol % value of the cobalt (Co) of the shell portion is greater than a mol % value of cobalt (Co) of the core portion.

Abstract: A positive electrode active material precursor particle and/or a positive electrode active material particle according to one embodiment of the present disclosure include a core portion and a shell portion, the core portion includes nickel (Ni) and zirconium (Zr), the shell portion includes cobalt (Co), a mol % value of the nickel (Ni) of the core portion is greater than a mol % value of nickel (Ni) of the shell portion, a mol % value of the zirconium (Zr) of the core portion is greater than a mol % value of zirconium (Zr) of the shell portion, and a mol % value of the cobalt (Co) of the shell portion is greater than a mol % value of cobalt (Co) of the core portion.

Abstract: Disclosed herein are a microelectrode chip and a method for differentiating neural stem cells into neurons using same. The microelectrode chip can efficiently differentiate neural stem cells into neurons, thereby enabling the production of a large quantity of functional neurons through the differentiation of patient-specific neural stem cells. This facilitates quality-controlled production of neurons and can be widely used in various fields, including platforms for screening neural regeneration candidates and research into treatments for various degenerative neurological diseases.

Abstract: The present disclosure relates to a method for manufacturing core-shell particles using carbon monoxide, and more particularly, to a method for manufacturing core-shell particles, the method of which a simple and fast one-pot reaction enables particle manufacturing to reduce process costs, facilitate scale-up, change various types of core and shell metals, and form a multi-layered shell by including the steps of adsorbing carbon monoxide on a transition metal for a core, and reacting carbon monoxide adsorbed on the surface of the transition metal for the core, a metal precursor for a shell, and a solvent to form particles with a core-shell structure having a reduced metal shell layer formed on a transition metal core.

Abstract: Provided are a core-shell catalyst with improved durability and a manufacturing method thereof including irradiating ultrasonic waves to a solution containing a reducing solvent, a noble metal precursor, a transition metal precursor, and a carbon support to form a cavity due to the irradiation of the ultra-waves and forming transition metal precursor core and noble metal precursor shell particles due to a difference in vapor pressure; and nitriding the transition metal precursor core and noble metal precursor shell particles at a temperature of 450 to 550° C. and a pressure condition of 60 to 100 bar under a gaseous nitrogen source, in which the transition metal may be any one selected from the group consisting of Y, La, Ce, Zn, and Mn or combinations thereof.

Abstract: The present disclosure provides a method for realizing a new type of stay purpose estimation technology that can estimate the purpose of a user's stay regardless of a label data, departing from a method which predetermines a label data in order to estimate a stay purpose.

Abstract: A positive electrode active material including a first lithium composite oxide particle including a secondary particle formed by aggregation of one or more primary particles, and a coating oxide occupying at least a part of at least one of surfaces of the secondary particle, grain boundaries between the primary particles, or surfaces of the primary particles, the positive electrode active material satisfying an equation of 1.3?a/b?3.0, wherein a represents a max peak intensity at 2theta=44.75° to 44.80° and b represents a max peak intensity at 2theta=45.3° to 45.6° in X-ray diffraction (XRD) analysis using Cu K? radiation.

Abstract: A positive electrode active material including a first lithium composite oxide particle including a secondary particle formed by aggregation of one or more primary particles, and a coating oxide occupying at least a part of at least one of surfaces of the secondary particle, grain boundaries between the primary particles, or surfaces of the primary particles, the positive electrode active material satisfying an equation of 1.3?a/b?3.0, wherein a represents a max peak intensity at 2theta=44.75° to 44.80° and b represents a max peak intensity at 2theta=45.3° to 45.6° in X-ray diffraction (XRD) analysis using Cu K? radiation.

Abstract: A semiconductor device may comprise: a plurality of lower electrodes which are on a substrate; a first electrode support which is between adjacent lower electrodes and comprises a metallic material; a dielectric layer which is on the lower electrodes and the first electrode support to extend along profiles of the first electrode support and each of the lower electrodes; and an upper electrode which is on the dielectric layer.

Abstract: A semiconductor device may comprise: a plurality of lower electrodes which are on a substrate; a first electrode support which is between adjacent lower electrodes and comprises a metallic material; a dielectric layer which is on the lower electrodes and the first electrode support to extend along profiles of the first electrode support and each of the lower electrodes; and an upper electrode which is on the dielectric layer.

Abstract: The present disclosure relates to a method for manufacturing core-shell particles using carbon monoxide, and more particularly, to a method for manufacturing core-shell particles, the method of which a simple and fast one-pot reaction enables particle manufacturing to reduce process costs, facilitate scale-up, change various types of core and shell metals, and form a multi-layered shell by including the steps of adsorbing carbon monoxide on a transition metal for a core, and reacting carbon monoxide adsorbed on the surface of the transition metal for the core, a metal precursor for a shell, and a solvent to form particles with a core-shell structure having a reduced metal shell layer formed on a transition metal core.

Abstract: A method for preparing a platinum alloy catalyst using an oxide coating according to an embodiment of the present disclosure comprises: a first step of preparing a dispersion by mixing a commercial platinum catalyst and a transition metal precursor with a solvent; a second step of preparing a catalyst by putting an ultrasonic tip into the dispersion prepared through the first step and performing an ultrasonic process; a third step of performing a primary heat treatment process on the catalyst prepared through the second step; a fourth step of performing an acid treatment process on the catalyst that has undergone the primary heat treatment process through the third step; and a fifth step of preparing a platinum alloy catalyst by performing a secondary heat treatment process on the catalyst that has undergone the acid treatment process through the fourth step.

Abstract: The manufacturing method of a palladium transition metal core-based core-shell electrode catalyst according to an exemplary embodiment of the present disclosure includes a first step of preparing a slurry by irradiating ultrasonic wave to a dispersion solution including a solvent, a platinum precursor, a palladium precursor, a carbon support, and a transition metal precursor, a second step of preparing a solid material by filtering, washing, and drying the slurry prepared in the first step, and a third step of preparing a core-shell electrode catalyst by thermally treating the solid prepared in the second step in a specific gas atmosphere.

Abstract: The present disclosure relates to a method for manufacturing core-shell particles using carbon monoxide, and more particularly, to a method for manufacturing core-shell particles, the method of which a simple and fast one-pot reaction enables particle manufacturing to reduce process costs, facilitate scale-up, change various types of core and shell metals, and form a multi-layered shell by including the steps of adsorbing carbon monoxide on a transition metal for a core, and reacting carbon monoxide adsorbed on the surface of the transition metal for the core, a metal precursor for a shell, and a solvent to form particles with a core-shell structure having a reduced metal shell layer formed on a transition metal core.

Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery using the same, and more particularly, to a bimodal-type positive electrode active material including a first lithium composite oxide as a small particle and a second lithium composite oxide as a large particle, which improves the transport ability of lithium ions by controlling the morphology or crystal structure of the small particle included in the positive electrode active material, and further alleviates or prevents the early deterioration or shortened lifetime of the bimodal-type positive electrode active material, caused by the small particle, by increasing the particle stability of the small particle, and a lithium secondary battery using the same.

Abstract: A modeling method for designing a flow field of a fuel cell including a membrane electrode assembly including a catalyst layer and an electrolyte membrane, a gas diffusion layer, a flow field, and a bipolar plate includes modeling using a numerical model derived from a governing equation including a mass conservation equation of species, a fluid momentum in a porous media, and a modified Butler-Volmer's equation and outputting an oxygen diffusion characteristic in a catalyst layer from the modeling result.

Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a positive electrode active material including a lithium composite oxide containing at least nickel and cobalt, wherein since the cobalt in the lithium composite oxide has a concentration gradient having at least different slopes from a surface portion toward a central portion, it is possible to improve the stability of particles not only in a surface portion of the lithium composite oxide but also in a central portion thereof, a positive electrode including the positive electrode active material, and a lithium secondary battery using the negative electrode.