Abstract: A novel ionic liquid is provided. A highly safe secondary battery with high charge and discharge capacity is provided. The ionic liquid includes a cation represented by General Formula (G1) and an anion represented by Structural Formula (200). In the formula, X1 to X3 each independently represent any one of fluorine, chlorine, bromine, and iodine. One of X1 to X3 may be hydrogen. In addition, n and m each independently represent 0 to 5. Furthermore, a secondary battery including the above-described ionic liquid is provided.

Abstract: A novel method for forming a positive electrode active material is provided. The method for forming a positive electrode active material includes causing a reaction between a cobalt aqueous solution and an alkaline aqueous solution to form a cobalt compound; mixing the cobalt compound and a lithium compound and performing a first heat treatment to form a first composite oxide; mixing the first composite oxide and a compound containing a first additive element and performing a second heat treatment to form a second composite oxide; and mixing the second composite oxide and a compound containing a second additive element and performing a third heat treatment. The first heat treatment is performed at a temperature higher than or equal to 700° C. and lower than or equal to 1100° C. The second heat treatment is performed at a temperature higher than or equal to 700° C. and lower than or equal to 1000° C.

Abstract: An image reading apparatus includes a lower unit, and a discharge tray and an upper unit that pivot with respect to the lower unit. An axis center of the discharge tray and an axis center of the upper unit are common, the image reading apparatus includes a first damping portion that damps pivoting of the discharge tray in at least an opening direction, and a second damping portion that damps pivoting of the upper unit in at least a closing direction, and the upper unit is configured to engage with the first damping portion, and, when the upper unit is closed from a state in which at least the discharge tray and the upper unit are opened, in addition to a damping force of the second damping portion, a damping force of the first damping portion is applied to the upper unit.

Abstract: An image reading apparatus includes a lower unit, and a discharge tray and an upper unit that pivot with respect to the lower unit. An axis center of the discharge tray and an axis center of the upper unit are common, the image reading apparatus includes a first damping portion that damps pivoting of the discharge tray in at least an opening direction, and a second damping portion that damps pivoting of the upper unit in at least a closing direction, and the upper unit is configured to engage with the first damping portion, and, when the upper unit is closed from a state in which at least the discharge tray and the upper unit are opened, in addition to a damping force of the second damping portion, a damping force of the first damping portion is applied to the upper unit.

Abstract: An inverter device converts DC to AC and supplies power to a load (motor), and includes a temperature sensor that directly or indirectly detects a temperature of the inverter device; a DC link including a smoothing capacitor; an inverter circuit provided between the DC link and the load (motor); and a control unit that controls the inverter circuit. The control unit forcefully passes a current through the DC link when an instruction to allow the inverter circuit to operate is not received and when the temperature detected by the temperature sensor is less than or equal to a predetermined temperature.

Abstract: An inverter device converts DC to AC and supplies power to a load (motor), and includes a temperature sensor that directly or indirectly detects a temperature of the inverter device; a DC link including a smoothing capacitor; an inverter circuit provided between the DC link and the load (motor); and a control unit that controls the inverter circuit. The control unit forcefully passes a current through the DC link when an instruction to allow the inverter circuit to operate is not received and when the temperature detected by the temperature sensor is less than or equal to a predetermined temperature.

Abstract: A heat transfer unit includes: an electrical component casing defining an internal space, the internal space housing a transformer together with a control board and a power supply board; and a cooling unit which cools an electronic component on the power supply board during operation of a compressor.