Abstract: Provided herein is an apparatus. The apparatus can include a battery cell. The battery cell can include an electrode. The apparatus can include a first solid electrolyte interphase on the electrode. The first solid electrolyte interphase can be formed from a first electrolyte having a salt concentration greater than or equal to 1 M. The apparatus can include a second solid electrolyte interphase on the electrode. The second solid electrolyte interphase can be formed from a second electrolyte different from the first electrolyte.

Abstract: The present disclosure relates to a technique for estimating the inter-beat interval (IBI) of a ballistocardiograph (BCG) signal measured using a non-contact sensor, filtering and correcting inaccurate information in the inter-beat interval estimated through clustering, and outputting a heart rate measurement result based on the filtered and corrected inter-beat interval.

Abstract: The present disclosure relates to a core-substrate, a substrate, a use of the substrate, and a semiconductor device comprising the same, wherein the core-substrate is a core-substrate applied to the manufacture of a semiconductor packaging substrate, and the core-substrate distinguished into a product area where a product utilized as a substrate of an individual semiconductor is disposed; and a blank area excepting for the product area, wherein the blank area comprises a protective area disposed between the product area and the substrate, and the protective area comprises a concave or a via. The embodiment can substantially suppress the occurrence of damage in the product area utilized as a substrate for semiconductor packaging, even though a core-substrate which may be easily broken by external impact.

Abstract: A coated separator for a rechargeable battery includes a porous polymer sheet comprising a surface; and a coating disposed on the surface, the coating comprising a metal oxyhydroxide; wherein: the coating includes a greater HF score when normalized to that of AlO(OH) at 100%; a greater PF5? score when normalized to that of AlO(OH) at 100%; or a greater LiOH score when normalized to that of AlO(OH) at 100%; or a combination of any two or more thereof.

Abstract: A wireless charging device according to an embodiment can effectively dissipate heat generated in a magnetic part, without causing a short circuit of a coil part or degradation of charging efficiency by having the magnetic part placed in a cooling part separated from the coil part and circulating cooling water in the cooling part. Therefore, the wireless charging device can be usefully used in a transportation means, such as an electric vehicle, which requires high-capacity power transmission between a transmitter and a receiver.

Abstract: An electrode active material includes a dopant (M2) and a lithium iron phosphate host material, where the electrode active material is represented as LiM2xFe1?xPO4; M2 is a transition metal or main group metal; x is 0.01 to 0.15; the electrode active material exhibits an increased ionic conductivity compared to a lithium iron phosphate (LiFePO4) without the dopant; and the electrode active material has a particle size distribution characterized by a D50 greater than or equal to 1 ?m.

Abstract: There is provided a charging management apparatus. The charging management apparatus comprises: a charging station including a plurality of charging docks capable of loading a plurality of charging objects; a power supply configured to supply power for wireless charging to the plurality of charging docks in order to wirelessly charge the plurality of charging objects loaded in the charging station; and a controller configured to determine which charging mode to charge the plurality of charging objects among a constant current mode and a constant voltage mode based on a charging dock ratio in which wireless charging is being performed, and configured to control the power supply to charge the plurality of charging objects in the determined charging mode, when the power for wireless charging is supplied to the plurality of charging docks.

Abstract: There is provided a wireless charging apparatus. The wireless charging apparatus comprises: a power transmitter for wirelessly transmitting power to a battery; a temperature sensor for detecting at least one of a temperature of the power transmitter, a temperature of the battery, and a temperature of a power receiver; and a controller for changing a current profile of the power transmitter based on the temperature.

Abstract: A wireless charging device according to one embodiment has an inductance deviation at 80° C. of 0 or more, and has a magnetic part that has a permeability change rate (?P1) of 0/° C. or more, thus having excellent high-temperature stability, and being able to maintain excellent charging efficiency even at high temperature. Therefore, the wireless charging device can be useful in a transportation means such as an electric vehicle requiring large-capacity power transmission between a transmitter and a receiver.

Abstract: A cathode active material includes a lithium manganese (Mn) iron (Fe) phosphate, wherein a mol ratio of Mn:Fe is from about 3:7 to about 9:1, the lithium manganese iron phosphate is an olivine structure, and the Mn and Fe in the olivine are present in an partially ordered or partially disordered sublattice.

Abstract: This disclosure is generally directed to coating materials for cathode active materials for lithium ion batteries (LIBs) and the methods used to identify such coating materials. The coatings are lithium transition metal phosphorous oxide materials (Li-M-P-O) that are stable to cycling with cathode active materials having a layered-type structure such as lithium nickel-manganese-cobalt oxide materials and they are reactive with battery degradation materials (i.e., HF, PF5?, etc.) to scavenge those materials from the electrolyte. The coating materials may also be applied to current collectors, or other internal components of the LIB. Exemplary specific materials identified as having desirable properties are: LiMnPO4, LiCoPO4, LiNiPO4, LiSnPO4, LiV(PO3)4, LiCrP2O7, Li3Mn3(PO4)4, Li2MnP2O7, Li2FeP2O7, and LiCo(PO3)3; also identified were combinations of such materials with LiFePO4.

Abstract: This disclosure is generally directed to coating materials for cathode active materials useful in lithium ion batteries (LIBs). The coatings include a metal fluoride (MFx), a lithium metal fluoride (Li-M-F), or both, which are stable with cathode materials such as LiFePO4, and helpful in protecting against battery degradation materials (i.e., HF, LiF, PF5?, and LiOH).

Abstract: A battery cell includes a cathode including a cathode active material; an anode including an anode active material; and an electrolyte including a non-aqueous polar solvent, a lithium salt, and a (R3SiO)3P(O), a (R3SiO)3P, or a mixture of any two or more thereof; wherein: R is C1 to C4 alkyl; the cathode active material has an areal density of at least 10 mg/cm2 and a press density of at least 1.7 g/cc; the anode active material has an areal density of at least 5 mg/cm2 and a press density of at least 1.3 g/cc; and the conductivity of the cathode and/or anode is increased compared to the same battery cell without the (R3SiO)3P(O), the (R3SiO)3P, or the mixture of any two or more thereof.

Abstract: An electrode active material includes a dopant (M2) and a lithium manganese iron phosphate host material represented as LiM2xMnyFe1-x-yPO4, wherein the dopant is a transition metal or main group metal, and the electrode active material exhibits an increased ionic conductivity compared to a lithium manganese iron phosphate (LiMnyFe1-yPO4) without the dopant, wherein x is 0.01 to 0.15, and y is 0.30 to 0.85.

Abstract: A process for coating a cathode active material includes dissolving a metal salt in water to generate an aqueous acidic solution; mixing the aqueous acidic solution with the cathode active material for an aging time period to form an acid treated cathode active material; and annealing the acid treated cathode active material at a temperature sufficient to form a lithium metal oxide coating on the cathode active material; wherein: the cathode active material is a high-nickel content lithium cathode active material; the metal salt is M(NO3)x, MClx, MIx, M(ClO3)x, or , M(ClO4)x; M is Al, Co, Cu, Fe, Mn, Mo, Nb, Ni, Sb, Sc, Sn, Ti, Y, Zr, or a mixture of any two or more thereof; and 1?x?8.

Abstract: A wireless charging apparatus according to an embodiment includes a magnetic unit with a low strain rate (thermal strain) at 180° C., wherein a position change (?DR1) at 180° C. is 0.07 or less, to thereby provide the magnetic unit with improved heat resistance and magnetic properties and prevent deformation and damage of the magnetic unit during wireless charging, and further improve the high temperature stability and charging efficiency. Therefore, the wireless charging apparatus can be efficiently used in personal transportation means such as electric motorcycles, electric kickboards, electric scooters, electric wheelchairs, and electric bicycles, as well as transportation means such as electric vehicles requiring large-capacity power transmission between a transmitter and a receiver.

Abstract: The wireless charging device according to an embodiment allows adjustment of characteristics, including the distance between a coil and a magnetic material, to be within particular numerical ranges and thus has high charging efficiency, facilitates assembly, and can be improved in durability. Therefore, the wireless charging device is useful in a transportation means, such as an electric vehicle, requiring high-capacity power transmission between a transmitter and a receiver.

Abstract: A wireless charging device according to the present invention comprises a hybrid-type magnetic unit including a first magnetic unit and a second magnetic unit and, by adjusting the magnetic permeability, inductance, and arrangement structure of the units, can effectively reduce a heat generated during high power density wireless charging and enhance charging efficiency. Therefore, the wireless charging device can be efficiently used in various fields of personal transportation means such as electric motorcycles, electric kickboards, electric scooters, electric wheelchairs, and electric bicycles, as well as fields requiring large-capacity power transmission such as electric vehicles.

Abstract: A wireless charging device according to an embodiment can enhance charging efficiency and minimize heat generation while having an appropriate thickness by satisfying a specific expression in which characteristics including the distance between a magnetic part and a shield part and a Q factor are reflected. Therefore, the wireless charging device is useful for a mobility means, such as an electric vehicle, requiring high-capacity power transmission between a transmitter and a receiver.

Abstract: A wireless charging apparatus for a transportation means according to an embodiment comprises a magnetic unit having a moisture absorption rate adjusted to a specific range, and accordingly, high magnetic properties and charging efficiency may be provided under a frequency and high power applied to wireless charging. Therefore, the wireless charging apparatus can be applied to a transportation means, such as an electric vehicle requiring a large amount of power transmission between a transmitter and a receiver.