Abstract: The present disclosure relates to a solid state battery comprising silicon (Si) as a negative electrode active material. The solid state battery according to the present disclosure does not comprise a conductive material and a solid electrolyte in the negative electrode and comprise a minimum amount of binder. According to this structural feature, the battery according to the present disclosure has good electrical and chemical properties including heat resistant stability, energy density, life characteristics and Coulombic efficiency.

Abstract: A solid state battery is described, which has a negative electrode having a negative electrode active material layer including silicon (Si) as a negative electrode active material. The Si may be present as particles, e.g., microparticles, having an average particle size (D50) of 0.1 ?m to 10 ?m. The negative electrode active material layer may include the silicon (Si) in an amount of 75 wt % or more, 95 wt % or more, 99 wt % or more, or 99.9 wt % or more, based on 100 wt % of the negative electrode active material layer. The negative electrode active material layer can be free or substantially free of conductive material, carbon, solid state electrolyte, and/or binder. Preferably, after charge/discharge cycles, the negative electrode active material layer forms densified and interconnected large particles of Li—Si alloy, e.g., the Li—Si alloy may have at least one columnar structure and at least one void.

Abstract: An electronic apparatus, a charge controlling method, and a computer-readable recording medium are provided. The electronic apparatus includes a battery unit including a battery and configured to supply power to components of the electronic apparatus using power of the battery, a charging circuit configured to, in response to the power being received from an external adapter, charge the battery using the received power, and a controller configured to detect a charging state of the battery, divide a charging process into a plurality of charging periods according to the detected charging state, and control the charging circuit to provide different target voltages to the divided charging periods and target currents determined according to the different target voltages and preset power consumption to the battery.

Abstract: An electronic apparatus, a charge controlling method, and a computer-readable recording medium are provided. The electronic apparatus includes a battery unit including a battery and configured to supply power to components of the electronic apparatus using power of the battery, a charging circuit configured to, in response to the power being received from an external adapter, charge the battery using the received power, and a controller configured to detect a charging state of the battery, divide a charging process into a plurality of charging periods according to the detected charging state, and control the charging circuit to provide different target voltages to the divided charging periods and target currents determined according to the different target voltages and preset power consumption to the battery.

Abstract: An electronic apparatus, a charge controlling method, and a computer-readable recording medium are provided. The electronic apparatus includes a battery unit including a battery and configured to supply power to components of the electronic apparatus using power of the battery, a charging circuit configured to, in response to the power being received from an external adapter, charge the battery using the received power, and a controller configured to detect a charging state of the battery, divide a charging process into a plurality of charging periods according to the detected charging state, and control the charging circuit to provide different target voltages to the divided charging periods and target currents determined according to the different target voltages and preset power consumption to the battery.

Abstract: An electronic apparatus for charging a battery with an optimum charge profile corresponding to a pattern of use and a state of the battery is provided. The electronic apparatus may include a power supply configured to supply power to respective components of the electronic apparatus using power of a battery, and when receiving an input of power from an external adaptor, to charge the battery using the inputted power, and a processor configured to fully charge and discharge the battery to thus generate a charge curve and a discharge curve expressed in time and charge amount, and control the power supply to charge the battery using a charge profile corresponding to the generated charge curve and discharge curve.

Abstract: An electronic apparatus for charging a battery with an optimum charge profile corresponding to a pattern of use and a state of the battery is provided. The electronic apparatus may include a power supply configured to supply power to respective components of the electronic apparatus using power of a battery, and when receiving an input of power from an external adaptor, to charge the battery using the inputted power, and a processor configured to fully charge and discharge the battery to thus generate a charge curve and a discharge curve expressed in time and charge amount, and control the power supply to charge the battery using a charge profile corresponding to the generated charge curve and discharge curve.

Abstract: An electrode is provided. The electrode includes a plurality of graphite particles arranged on a current collector so as to have a plurality of pores, and a plurality of hard carbon particles mixed with the graphite particles and having weight percent determined based on charging speed and lifespan of a battery including the electrode, wherein the weight percent of the hard carbon particles is between 20% and 35%, thereby controlling charging speed and lifespan of a battery.

Abstract: An electronic apparatus, a charge controlling method, and a computer-readable recording medium are provided. The electronic apparatus includes a battery unit including a battery and configured to supply power to components of the electronic apparatus using power of the battery, a charging circuit configured to, in response to the power being received from an external adapter, charge the battery using the received power, and a controller configured to detect a charging state of the battery, divide a charging process into a plurality of charging periods according to the detected charging state, and control the charging circuit to provide different target voltages to the divided charging periods and target currents determined according to the different target voltages and preset power consumption to the battery.

Abstract: Provided are a method of preparing carbon nanotube-olivine type lithium manganese phosphate composites and a lithium secondary battery using the same. The method includes acid-treating a carbon nanotube to purify the carbon nanotube by adding an acid solution to the carbon nanotube, forming a precursor mixture of the carbon nanotube and a metal precursor of olivine type lithium manganese phosphate, and heat-treating the precursor mixture. The carbon nanotube-olivine type lithium manganese phosphate composites can provide high energy density per unit volume and can improve output characteristics.