Abstract: An electrolyte of an energy storage device includes a non-aqueous solvent, an electrolyte salt including LiPF6, and at least two compounds selected from among a phosphite ester compound represented by a formula 1, a compound configured to form lithium and a complex and including a formation constant equal to or greater than 102, difluorophosphate represented by a formula 2, and a phosphate ester compound represented by a formula 3, the at least two compounds including at least the phosphite ester compound represented by the formula 1: where each of R11, R12, and R13 is independently one of a monovalent hydrocarbon group and a monovalent fluorinated hydrocarbon group, where M21+ is one of lithium ion (Li+) and sodium ion (Na+), where each of R31, R32, and R33 is independently one of a monovalent hydrocarbon group and a monovalent fluorinated hydrocarbon group.

Abstract: An opening and closing apparatus includes: a drive unit provided in an opening and closing body which is openably and closeably attached to a main body, and opening and closing the opening and closing body with respect to the main body by driving the opening and closing body using electric power; a secondary energy storage device provided in the opening and closing body and electrically connected to the drive unit in such a manner that the secondary energy storage device can be inductively charged and can supply electric power to the drive unit; and an electric power receiving coil provided in the opening and closing body so as to be capable of facing an electric power transmitting coil which is provided on the main body, and is electrically connected to a primary energy storage device installed on the main body, and electrically connected to the secondary energy storage device.

Abstract: An opening and closing apparatus includes: a drive unit provided in an opening and closing body which is openably and closeably attached to a main body, and opening and closing the opening and closing body with respect to the main body by driving the opening and closing body using electric power; a secondary energy storage device provided in the opening and closing body and electrically connected to the drive unit in such a manner that the secondary energy storage device can be inductively charged and can supply electric power to the drive unit; and an electric power receiving coil provided in the opening and closing body so as to be capable of facing an electric power transmitting coil which is provided on the main body, and is electrically connected to a primary energy storage device installed on the main body, and electrically connected to the secondary energy storage device.