Sander, Rolf

Disclosed is a wireless charging system for an electric vehicle. A transmitter pad and an inverter are installed in a parking lot having a parking line indicated therein. The inverter previously memorizes a relative location of the transmitter pad to the parking line. An electric vehicle memorizes the location of a receiver pad at the bottom thereof. When entering a parking area, the electric vehicle recognizes a parking line through a camera, and performs parking so that the transmitter pad and the receiver pad are horizontally aligned by calculating a relative location of the transmitter pad to the receiver pad in real time through communication with the inverter. After the parking, charging is started after vertical alignment with the receiver pad by adjusting the height of the transmitter pad through a transmitter coil on the transmitter pad.

The present invention relates to a method for removing a high-adhesion binder and a carbon conductive material from a waste battery or waste scrap including at least one selected from the group consisting of a positive electrode material and a negative electrode material, a high-adhesion binder containing fluorine, and a carbon conductive material, the method including mixing an additive with a pulverized waste battery or pulverized waste scrap to form a mixture, heat-treating the mixture to remove a high-adhesion binder and a carbon conductive material, and washing the mixture from which the high-adhesion binder and the carbon conductive material have been removed, wherein the additive is at least one selected from the group consisting of NaOH, KOH, Ca(OH)₂, and Mg(OH)₂.

The present invention relates to a graphene network battery including a positive electrode current collector, a positive electrode mixture, a separator, a negative electrode mixture, and a negative electrode current collector, wherein the negative electrode mixture includes a negative electrode material layer formed on an upper portion of the negative electrode current collector, and including a silicon negative electrode active material and a binder, and a structure-stabilized graphene layer formed on at least one surface of the negative electrode material layer.

Disclosed is a solid oxide stack. The solid oxide stack according to one embodiment of the present invention includes a module formed by stacking a plurality of unit cells, and upper and lower manifolds installed at the top and bottom of the module, respectively. Each unit cell comprises a cell frame with a central opening, an air electrode current collector, a solid oxide cell, and a fuel electrode current collector sequentially stacked and seated within the central opening; an interconnect formed on the cell frame, having an air flow channel on one surface and a fuel flow channel on the opposite surface; a cell sealant located at the interface between the cell frame and the solid oxide cell; and a fuel electrode sealant located at the interface between the cell frame and the interconnect. The module is formed with air inlets and fuel inlets/outlets penetrating vertically through its top and bottom, allowing air to flow into the air flow channel through the upper or lower manifold and exit through an air outlet formed as an open structure on one side of the module.

An aqueous solution composition for synthesizing a La-doped Ti-based perovskite structural body according to an embodiment of the present invention includes at least one selected from the group consisting of a Ba precursor, a Sr precursor, and a Ca precursor, a La precursor, and a Ti precursor which are dissolved in an aqueous solution, wherein the aqueous solution further includes citric acid.

Disclosed is a solid oxide stack. The solid oxide stack according to the present invention includes: a module formed by stacking a plurality of unit cells; an upper manifold and a lower manifold installed to support a top surface and a bottom surface of the module, respectively; wherein each unit cell includes a cell frame with a central opening, an air electrode current collector, a solid oxide cell, and a fuel electrode current collector sequentially stacked and seated within the central opening, an interconnect formed on the cell frame having a fuel flow channel on one surface and an air flow channel on the opposite surface, a cell sealant positioned at the interface between the cell frame and the solid oxide cell, and a fuel electrode sealant positioned at the interface between the cell frame and the interconnect; and wherein the air flow channel opens to at least one side of the module. According to the present invention, the stack provides a removable modular unit structure without requiring an air electrode sealant, allowing defective or aged cells to be easily replaced without affecting the stack's overall performance. This simplifies maintenance, extends the stack's lifespan, and reduces operational costs.

Provided is a system for time synchronization between a server and an Internet-of-Things (IoT) device. The system may include a server configured to broadcast a time-point synchronization signal including absolute time point information; and an IoT device configured to receive the broadcast time-point synchronization signal and calculate absolute time point information by using the absolute time point information included in the time-point synchronization signal, computation time information according to an internal computation operation, and transmission time information required to receive the time-point synchronization signal.

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