This technology relates to a vanadium oxide-carbon composite anode active material, its manufacturing method, and a lithium-ion battery comprising the same. Specifically, it is a manufacturing technology for vanadium oxide-carbon composite-based lithium-ion battery anode active material.
In existing technologies, conventional V2O3 material used as an anode active material in lithium-ion batteries presented problems leading to low actual capacity, conductivity, structural stability, and rate capability, which needed to be addressed. Therefore, this technology proposes a configuration that includes a method for manufacturing a V2O3/C composite active material, comprising the steps of dissolving m-ammonium vanadate in a solvent, preparing a precursor, and heat-treating the precursor.
Accordingly, this technology can improve the cycling stability and rate capability of the V2O3/C composite active material, thereby enhancing its performance as an anode active material in lithium-ion batteries. It has application value in the fields of secondary batteries, advanced materials, and chemistry.
This technology relates to a full-duplex communication transceiver utilizing circular polarization technology. Specifically, it is a full-duplex transceiver technology utilizing metasurfaces and circular polarization.
Conventional technologies faced issues of reduced power conversion efficiency and power loss in full-duplex communication systems, particularly in transformer-based full-duplex communication technologies. To address this, the present technology proposes a configuration that includes a transmitting and receiving device for full-duplex communication, utilizing circular polarization technology and comprising a communication circuit area, a metasurface structure, and an antenna unit.
Accordingly, this technology can improve power conversion efficiency, reduce power loss in full-duplex communication systems, and enable high-efficiency and compact full-duplex communication. It has application value in the broadcasting, telecommunications, electronic components, semiconductor, and equipment industries.
This technology pertains to a concrete structure reinforcement method. Specifically, it is a shear reinforcement technology for concrete structures using grooves and reinforcing mesh.
Existing concrete structure reinforcement methods, such as TRM methods in construction and FRP, faced challenges including reduced economic feasibility due to expensive epoxy resins, material heterogeneity, and abnormal temperature degradation. This technology addresses these issues by proposing a configuration that includes steps for concave groove formation, mortar layer coating, reinforcing mesh attachment, reinforcing mesh anchoring, and finishing plastering.
Accordingly, this technology can improve application characteristics and profitability while maintaining high durability and inherent safety, including fire resistance and structural performance. It offers valuable applications in the construction, civil engineering, and advanced materials sectors.
This technology relates to a manufacturing method for platinum alloy catalysts for fuel cells and fuel cells utilizing the same. Specifically, it is a manufacturing technology for low-cost, high-durability platinum alloy catalysts for fuel cells.
Existing technologies aimed to address the high manufacturing costs and economic burden associated with using platinum catalysts in fuel cell electrodes, and to reduce the unit cost of catalysts while improving their durability and stability. To achieve this, the present technology proposes a manufacturing method for platinum-alloy catalysts for fuel cells. This method includes steps for preparing a dispersion solution, controlling the pH of the dispersion solution, obtaining a platinum-alloy catalyst solution, and obtaining platinum-alloy catalyst powder.
Accordingly, this technology can improve the durability and stability of fuel cell electrodes by using platinum-alloy catalysts with reduced unit costs. It has significant application value in the fields of energy, chemistry, and advanced materials.
This technology concerns a processor capable of handling external service requests through a symmetric interface. More specifically, it is a processor architecture that processes external service requests using a symmetric interface.
Conventional technologies faced the challenge of performance degradation and complexity in multiprocessor systems, necessitating a processor capable of handling external service requests without IRQ pins and interrupt controllers. This technology addresses this by proposing a processor architecture that includes a symmetric interface, a service control point, and an internal buffer for storing and processing service requests.
Accordingly, this technology can improve the efficiency and performance of multiprocessor systems by providing a processor capable of handling external service requests without requiring IRQ pins and interrupt controllers. It has valuable applications in the fields of semiconductors, equipment, electronic components, and software.
This technology relates to the operating method of a music monitoring system. Specifically, it is a blockchain-based technology for registering music usage history and monitoring copyright settlements.
Existing technologies needed to address the challenge of monitoring music usage and ensuring fair usage identification and accurate calculation in music distribution. To overcome this, the present technology proposes a configuration that includes an operating method for a music monitoring system, comprising steps such as transmitting creation request information and executing chain code.
Accordingly, this technology can improve the monitoring results of music usage and ensure fair usage identification and accurate calculation on a blockchain network during music distribution. It has application value in the fields of gaming, entertainment, software, and legal services.
This technology relates to multi-level converters. Specifically, it is a multi-level power conversion technology that reduces capacitor ripple using magnetically coupled submodules.
Conventional technologies faced a fundamental problem in modular multi-level converters: as the operating line frequency decreases, the low-frequency ripple component of the submodule (SM) capacitor voltage increases, negatively impacting system performance and lifespan. To address this, the present technology proposes a configuration that includes multiple submodules, transformers, and two consecutive submodules magnetically coupled to the transformer windings and magnetic core, along with two half-bridge switches within each submodule to eliminate ripple power.
As a result, this technology can improve system performance and lifespan by reducing the low-frequency ripple component of the submodule (SM) capacitor voltage, and eliminate the need for large storage capacitors in submodules. It has high utility value in the fields of electricity, power generation, energy, and electronic components.
This technology relates to a photo-taking based scribble drawing device and method. Specifically, it is a customized scribble drawing technology combining photo image object recognition and robot control.
Existing technologies needed to address the demand for customizable products by providing methods for easily customizing existing industrial products. To address this, the present technology proposes a configuration that includes a mobile device, a server, and a scribbling drawing robot connected via a network.
Accordingly, this technology can improve the accuracy of scribbling images by performing pre-processing to remove small bounding boxes and overlapping objects. It has potential for use in robotics, automation, software, and household goods.
Ultrasonic Slope Measurement Device
This technology concerns a device and method for measuring inclination using an ultrasonic sensor. More specifically, it describes a method for measuring inclination by transmitting and receiving ultrasonic waves via an ultrasonic sensor while positioned at a distance from the inclined surface.
Conventional methods for determining inclination using accelerometers and gyroscopes suffer from errors during the integration process, limiting their ability to accurately determine the ground's inclination. Therefore, we propose an inclination measurement device and method utilizing an ultrasonic sensor.
This technology enables safer and more accurate inclination measurements compared to conventional methods, as it can measure the slope by transmitting and receiving ultrasonic waves via an ultrasonic sensor while positioned away from the inclined surface.
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This technology was developed with research support from the Korea Technology and Information Promotion Agency for SMEs (TIPA) for the development of highly directional horn-guided ultrasonic sensors.
How to control the movement path of a robot vacuum cleaner in real time
This technology relates to a travel path control device and method, and relates to a travel path control device and method that can be applied to moving objects such as airplanes and automobiles.
Robot vacuum cleaners using existing infrared sensors or ultrasonic sensors have the problem that it is difficult to control the path of movement until an obstacle is detected, and if there is a space between the obstacles, they cannot be prevented from entering it, and it is often impossible to get out after entering that space. Therefore, this technology proposes a travel path control method that can control the movement path of an object that performs autonomous driving in real time.
This technology can be applied to moving objects such as robots and vacuum cleaners because it can control the direction of travel so that the moving object can enter in a direction perpendicular to the boundary line located at the front, return when it leaves the moving area, and control the movement path in real time.
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