To provide an ion adsorption device which hardly causes useless loss and is compact, and to provide a heat generation device, a desalting device, an ion transfer device and a battery device using the ion adsorption device.

By alternately performing an ion-adsorbing operation and an ion-releasing operation of cells 1, 2 where DLCs 13, 14 are separately stored, the cells 1, 2, for example, perform heat generation and cold generation. By alternately causing a cooling fluid and a fluid to be cooled to flow through the cells 1, 2, heat and cold are continuously taken out. The DLCs 13, 14 complementarily perform charging and discharging.