Abstract: A device for evaluating characteristics of a target ground containing a metal component is proposed. The device includes a penetration probe having a main frame and a pair of side frames respectively installed at opposite side ends of the main frame, wherein each side frame has a lower end thereof extending downward from the main frame; a plurality of electrodes installed to be exposed to outside on the main frame; an electrode measurement part for measuring apparent chargeability of the target ground by applying power for measurement to the plurality of electrodes; and a main processor for calculating a weight ratio of a metal component of the target ground on the basis of the apparent chargeability measured by the electrode measurement part and calculating a volume ratio of the metal component of the target ground on the basis of the calculated weight ratio of the metal component.

Abstract: A cathode for a lithium secondary battery based on the disclosed technology includes: a cathode current collector; and a cathode active material layer including a first cathode active material layer and a second cathode active material layer sequentially laminated on the cathode current collector, wherein the first cathode active material layer and the second cathode active material layer include first cathode active material particles and second cathode active material particles having different particle structures from each other in crystallography or morphology, and a mixing weight ratio of the second cathode active material particles to the first cathode active material particles in the first cathode active material layer may be different from a mixing weight ratio of the second cathode active material particles to the first cathode active material particles in the second cathode active material layers.

Abstract: An integrated circuit (IC) package includes a one or more die and an interposer. The interposer is coupled to the die and includes circuit traces. The circuit traces are provided in a serpentine configuration. A method can be used to fabricate an integrated circuit package.

Abstract: A negative electrode for a secondary battery includes a negative electrode current collector; and a negative electrode active material layer formed on the negative electrode current collector. The negative electrode active material layer includes a silicon-based active material and a conductive material. The conductive material includes carbon nanotubes having a diameter of 4 to 9 nm and 3 to 7 walls, and the carbon nanotubes are included in an amount of 3 wt % to 9 wt % with respect to a total of 100 wt % of the silicon-based active material. The negative electrode shows a negative electrode slurry resistance value of or below a predetermined value to secure excellent conductivity, and according to a manufacturing method, an effect of significantly reducing costs as compared with the conventional case is shown.

Abstract: Provided is a method for manufacturing electrode slurry including: a) kneading a first mixture including an electrode active material and a thickener solution; and b) preparing a second mixture including the kneaded first mixture and a conductive agent, in which a solid content in the second mixture is smaller than that of the first mixture.