Abstract: To provide a porous dielectric particle capable of achieving a lithium ion secondary battery having a high volumetric energy density, a high output, and being scarcely deteriorated in the output property even after charge and discharge are repeated, an electrode for a lithium ion secondary battery including the porous dielectric particle, and a lithium ion secondary battery using the electrode for a lithium ion secondary battery. A porous dielectric oxide is used, and this is dispersed and disposed in gaps between active material particles of an electrode. Specifically, as a particle to be blended in an electrode of a lithium ion secondary battery including an electrolytic solution, porous dielectric particles in which at least a part of a surface of porous core particles is coated with dielectric oxide is used.

Abstract: A charge control device includes a storage unit for storing a plurality of pieces of charging information, each specifying a charging limit value using a temperature and a voltage of a battery as an indicator, and selection information for selecting one piece of charging information from the plurality of pieces of charging information based on the temperature and voltage of the battery, an acquisition unit for acquiring a temperature and a charge amount of the battery, a selection unit for selecting one piece of charging information from the plurality of pieces of charging information based on the temperature and charge amount of the battery acquired by the acquisition unit and the selection information, and a charge control unit for controlling charging of the battery using the temperature and charge amount of the battery acquired by the acquisition unit and the one piece of charging information selected by the selection unit.

Abstract: There is provided a metal oxygen battery which uses an oxygen-storing material of a composite oxide containing Y and Mn as a positive electrode material, and can reduce the reaction overpotential. The metal oxygen battery 1 has a positive electrode 2 to which oxygen is applied as an active substance, a negative electrode 3 to which metallic lithium is applied as an active substance, and an electrolyte layer 4 interposed between the positive electrode 2 and the negative electrode 3. The positive electrode 2 contains an oxygen-storing material of YMn1-xAxO3 wherein A=Ru, Ni, or Co, and 0.01?x?0.2.