This technology utilizes water-soluble polymers (e.g., PEI) to selectively form complexes with valuable metals, followed by sequential diafiltration and nanofiltration to separate and concentrate these metals from impurity ions.
Wastewater generated from processes such as secondary battery cathode manufacturing contains high concentrations of impurity metal ions like sodium and lithium, which limits the separation efficiency of valuable metals like nickel and cobalt when using conventional solvent extraction, adsorption, or nanofiltration techniques. Furthermore, high ion concentrations lead to increased osmotic pressure, making stable operation of membrane processes difficult.
This technology consists of a five-stage process: macromolecularizing valuable metals into polymer-ion complexes, filtering out impurity ions via ultrafiltration, dissociating the complexes by adding acid, recovering the valuable metals through diafiltration, and finally concentrating them to high levels using nanofiltration. It can be applied to cathode manufacturing wastewater treatment, wet recycling of spent batteries, and metal resource recovery from plating and smelting waste, enabling the high-purity recovery of discarded nickel and cobalt while reducing raw material procurement costs.
This technology features a surveying drone and its control method, integrating a body with multiple arms and propellers, sensors for detecting airflow and calculating air resistance, a laser surveying device, a communication module, and a processor. Once survey coordinates are entered, the processor determines the flight path and controls navigation by analyzing both real-time local airflow data and external weather information.
Conventional drones typically follow pre-programmed paths between a starting point and a destination, failing to account for wind and airflow changes encountered during flight. This often leads to excessive battery consumption in headwind conditions or instability, making it difficult to reach survey points with precision.
This technology determines flight paths by keeping expected air resistance below a specific threshold. When multiple survey points are involved, it selects a route that meets average resistance criteria. It establishes a primary path based on weather data while continuously updating sub-paths in response to real-time airflow. This solution is ideal for path-based flight services such as surveying in windy coastal or mountainous regions, large-scale terrain mapping, drone delivery, and facility inspections, significantly improving flight efficiency and ensuring stable navigation even in changing weather conditions.
This technology features a surveying drone equipped with a built-in sensor module for stable hovering, a surveying position adjustment mechanism consisting of a horizontal guide and a support pole, and a laser surveying tool that moves along the support pole to measure the target distance from a reference point. The drone body is equipped with rotating and telescopic thrust adjustment mechanisms that automatically balance the aircraft by shifting the position of the propellers at the ends.
When surveying equipment is mounted on a drone and moved, the center of gravity shifts. Conventional drones have fixed propeller positions, forcing them to compensate solely by adjusting motor RPM. This leads to unstable hovering and rapid battery depletion, as motors must run at high speeds for extended periods to maintain balance.
This technology uses a horizontal controller to manage the rotation range, length, and motor RPM of the thrust adjustment mechanism based on the center of gravity shift caused by the movement of the surveying tool. It consists of first and second motors, a threaded rotating shaft, a telescopic adjustment unit, and a telescopic arm that repositions the propellers, supported by an anti-sagging member. Ideal for precision surveying drones, industrial multicopters carrying heavy equipment, and inspection or surveillance missions requiring long-duration hovering, it ensures stable, vibration-free flight while reducing motor load to extend battery life.
This technology is a distance-measuring drone that carries a support pole and a laser surveying device on a hovering aircraft. It communicates with an external device placed at a ground reference point to measure the target distance to the survey point. The adjustment mechanism mounted on the aircraft changes the position and angle of the support pole based on remote control signals from the external device, allowing for precise alignment of the surveying device even while in the air.
Conventional distance surveying required mounting equipment on tripods and manually moving them from point to point. Even when surveying equipment was mounted on drones, it was difficult to adjust the height and beam angle during flight. Consequently, in rugged terrain or areas with many obstacles, it was often impossible to secure a clear path for laser transmission and reception, leading to reduced efficiency and accuracy.
This technology features a first adjustment mechanism that moves the surveying device vertically along the support pole, a second adjustment mechanism that moves it forward and backward along a guide rail, and a third adjustment mechanism that tilts the bed to align the orientation angle of the device, all driven by motors and rack-and-pinion systems. It can be applied to civil engineering and construction site surveying, cadastral and topographical surveys, and distance measurement in mountainous or riverine areas that are difficult for personnel to access, thereby reducing the need for manual labor and enabling rapid, remote targeting of desired points.
This technology relates to a highly conductive polymer electrolyte membrane that incorporates an imidazole-based ionic liquid.
Conventional polymer electrolyte membranes have faced limitations in stable application to electrochemical devices due to the difficulty of simultaneously achieving high ionic conductivity and mechanical stability.
By utilizing an imidazole-based ionic liquid, this technology can be applied to fuel cell and secondary battery electrolyte membranes to ensure high ionic conductivity and stability.
This technology is a leisure drone that allows users to fly while wearing the device. It features a drone body with symmetrically mounted rotors on both sides, connected sequentially to a foldable support frame, shoulder connectors, and a harness. The drone body includes a housing with storage, a rotor mount, a detachable battery mount, a safety tether, a pair of handles, and a control unit. This allows users to enjoy various activities, such as high jumps or long jumps, through body movements and control inputs.
Existing leisure flight devices often use a method of directly suspending and pulling a person during flight, where variables like wind and posture changes can lead to the rider detaching from the craft or tilting dangerously, resulting in fall accidents. Furthermore, the simple connection structure between the user's body and the drone has made it difficult to ensure both wearing stability and portability.
This technology securely fastens the harness to the drone using a foldable support frame with hinges and detachable shoulder connectors. A posture correction unit, consisting of a flywheel and detection members inside the body harness, corrects tilting of the back and sides in real time. A position-fixing tube, inflated by an injection pump, even stabilizes the angle of the connection joints. This makes it suitable for experiential leisure sports, theme park flight experiences, and unique entertainment content, allowing users to enjoy dynamic flight activities while significantly reducing the risk of falls.
This technology relates to a catalytic electrode for carbon dioxide reduction that secures an interface between a metal layer and a base material by forming a patterned metal layer on the surface of the base material.
Existing carbon dioxide reduction catalytic electrodes have had limitations in achieving high efficiency for converting carbon dioxide into carbon monoxide due to a lack of reactive active sites.
By increasing the number of active sites through expanded interfaces created by the patterned metal layer, this technology can be applied to carbon dioxide conversion processes to improve carbon monoxide reduction efficiency.
This technology relates to a photoelectrochemical water treatment device in which a light source, a photoanode with an immobilized photoelectrocatalyst, and a plurality of counter electrodes are arranged within a reaction tank.
Conventional water treatment methods have limitations in achieving eco-friendly and efficient processing due to low pollutant degradation efficiency or the requirement for additional chemical agents.
By decomposing pollutants through photoelectrochemical reactions, this technology can be applied to water treatment facilities to eco-friendly enhance treatment efficiency.
This technology involves forming a bismuth metal layer on a copper substrate and immersing it in a carbon dioxide and bicarbonate electrolyte to create petal-shaped bismuth subcarbonate.
Existing carbon dioxide reduction catalysts have faced limitations in manufacturing efficiency and catalytic performance, as it is difficult to uniformly form active nanostructures without applying external electricity.
By using an immersion process to form petal-shaped nanostructures, this technology can be applied to carbon dioxide conversion processes to enhance both catalytic performance and manufacturing efficiency.
This technology is a device that detects internal short circuit faults early by analyzing voltage and current signals during the constant current charging process of lithium-ion batteries.
Existing internal short circuit detection methods have limitations, as they struggle to detect minute initial short circuits, posing a risk of fire or explosion.
By analyzing constant current charging signals to detect short circuits early, this technology can be applied to battery safety management to prevent accidents before they occur.
This technology relates to a polymer electrolyte membrane fuel cell featuring a membrane electrode assembly (MEA) with a tungsten oxide coating of a specific thickness.
Conventional polymer electrolyte membrane fuel cells often suffer from reduced durability of the membrane electrode assembly due to radicals and degradation generated during operation.
By protecting the membrane electrode assembly with a tungsten oxide coating, this technology enhances the durability and operational stability of fuel cells.
This technology relates to a device that measures battery terminal voltage and load current to estimate the state of charge using an electrical equivalent circuit model and a current-adaptive extended Kalman filter.
Conventional state-of-charge estimation methods have limitations in maintaining accuracy, as estimation errors increase when load current fluctuates rapidly over time.
By applying a current-adaptive extended Kalman filter, this technology can be integrated into battery management systems to robustly estimate the state of charge even under time-varying load current conditions.
This technology relates to a perovskite composite in which a tin-based perovskite is co-doped with antimony trifluoride and tin fluoride.
Conventional tin-based perovskites have suffered from defects caused by the oxidation of tin, which leads to degraded device stability and performance.
By co-doping with antimony and tin fluoride to suppress these defects, this technology can be applied to perovskite devices to improve their stability and performance.
This technology relates to a carbon composite thin film in which a water-soluble salt is distributed within a carbon material with a concentration gradient along the thickness direction.
Conventional carbon thin films have limitations in achieving desired properties because it is difficult to uniformly distribute functional materials in a concentration gradient.
By forming a concentration gradient of water-soluble salt, this technology can be applied to energy storage and electrode materials to control functional properties along the thickness direction.
This technology involves manufacturing a catalyst electrode for carbon dioxide reduction by forming a heterogeneous metal layer on a base material surface and immersing it in a hydrogen sulfide electrolyte to create nanostructures.
Existing carbon dioxide reduction catalyst electrodes have faced limitations in achieving high catalytic efficiency and productivity due to difficulties in forming uniform nanostructures and complex manufacturing processes.
By forming nanostructures through the hydrogen sulfide immersion method, this technology can be applied to carbon dioxide conversion processes to enhance catalytic efficiency and simplify the manufacturing process.
