Power generation method and power generating element using humidity variation

A power generation method for obtaining an electromotive force using humidity variation in an environment, comprising the steps of:

• separating an aqueous solution of an ionic compound having deliquescence by an ion permeable membrane and inserting electrodes into the aqueous solutions on both sides of the ion permeable membrane;
• blocking from outside air, and sealing, one of the aqueous solutions of the ionic compound containing the electrode, and connecting the other aqueous solution of the ionic compound containing the electrode to the outside air;
• generating a difference in ion concentration derived from the ionic compound between the sealed aqueous solution of the ionic compound and the other aqueous solution of the ionic compound connected to the outside air with a change in humidity in the outside air;
• and
• generating an electromotive force between the electrodes in the aqueous solutions across the ion permeable membrane with the difference in ion concentration.