Abstract: The present disclosure provides a novel power-generating element that is advantageous from the maintenance-free point of view. A power-generating element according to the present disclosure includes a first electrode, a second electrode, and a solid electrolyte. The first electrode splits water. The solid electrolyte is placed between the first electrode and the second electrode. Ions generated by the splitting of the water at the first electrode are conducted toward the second electrode through the solid electrolyte. The splitting of the water at the first electrode and the generation of the ions in the solid electrolyte cause a potential difference between the first electrode and the second electrode, so that electrical energy is supplied to the outside of the power-generating element.

Abstract: A thermoelectric conversion material is a polycrystalline material composed of a plurality of crystal grains and has a composition represented by formula (I): Mg3+mSbaBi2?a?cAc. In the formula (I), A is at least one element selected from the group consisting of Se and Te, the value of m is greater than or equal to 0.01 and less than or equal to 0.5, the value of a is greater than or equal to 0 and less than or equal to 1.0, and the value of c is greater than or equal to 0.001 and less than or equal to 0.06. The thermoelectric conversion material has an Mg-rich region.

Abstract: A thermoelectric conversion material is a polycrystalline material composed of a plurality of crystal grains and has a composition represented by formula (I): Mg3+mSbaBi2?a?cAc. In the formula (I), A is at least one element selected from the group consisting of Se and Te, the value of m is greater than or equal to 0.01 and less than or equal to 0.5, the value of a is greater than or equal to 0 and less than or equal to 1.0, and the value of c is greater than or equal to 0.001 and less than or equal to 0.06. The thermoelectric conversion material has an Mg-rich region.

Abstract: The present disclosure provides a thermoelectric conversion material having a composition represented by a chemical formula of Li2?a+bMg1?bSi. In this thermoelectric conversion material, either requirement (i) in which 0?a?0.0001 and 0.0001?b?0.25-a or requirement (ii) in which 0.0001?a?0.25 and 0?b?0.25-a is satisfied. The thermoelectric conversion material has an Li8Al3Si5 type crystalline structure.

Abstract: The present disclosure provides a thermoelectric conversion material having a composition represented by a chemical formula of Li2?a+bMg1?bSi. In this thermoelectric conversion material, either requirement (i) in which 0?a?0.0001 and 0.0001?b?0.25-a or requirement (ii) in which 0.0001?a?0.25 and 0?b?0.25-a is satisfied. The thermoelectric conversion material has an Li8Al3Si5 type crystalline structure.

Abstract: A humidity control device includes a condenser and a water absorber-drainer. The condenser has a first region and a second region. The first region is a region having hydrophilicity and where moisture is condensed. The condensed moisture is moved by gravity to the water absorber-drainer via the second region. The water absorber-drainer includes a temperature control member and has a water absorption surface and a water drainage surface. When a temperature of the water absorber-drainer is in a first temperature region, the water absorber-drainer absorbs through the water absorption surface the moisture moved from the condenser. When the temperature of the water absorber-drainer is controlled to be in a second temperature region by an operation of the temperature control member, the water absorber-drainer drains the absorbed moisture through the water drainage surface.

Abstract: A thermoelectric conversion material is a polycrystalline material composed of a plurality of crystal grains and has a composition represented by formula (I): Mg3+mSbaBi2?a?cAc. In the formula (I), A is at least one element selected from the group consisting of Se and Te, the value of m is greater than or equal to 0.01 and less than or equal to 0.5, the value of a is greater than or equal to 0 and less than or equal to 1.0, and the value of c is greater than or equal to 0.001 and less than or equal to 0.06. The thermoelectric conversion material has an Mg-rich region.

Abstract: The desorbing process of the present disclosure includes a step of bringing a solution containing a hydrogenated aromatic compound, at least one of [P((CH2)mCH3)3((CH2)nCH3) (5?m?24, 13?n?24)]+ and [N((CH2)mCH3)3((CH2)nCH3) (5?m?24, 13?n?24)]+, and an anion into contact with an anode; and desorbing hydrogen from the hydrogenated aromatic compound.

Abstract: A hydrogen desorption method includes a step of bringing a liquid containing an alicyclic saturated hydrocarbon having a tertiary carbon atom bearing a saturated hydrocarbon side chain, a quinone, and an electrolyte into contact with a anode and a step of desorbing hydrogen from the alicyclic saturated hydrocarbon having a tertiary carbon atom bearing a saturated hydrocarbon side chain.

Abstract: A hydrogen desorption method includes a step of bringing a liquid containing an alicyclic saturated hydrocarbon having a tertiary carbon atom bearing a saturated hydrocarbon side chain, a quinone, and an electrolyte into contact with a anode and a step of desorbing hydrogen from the alicyclic saturated hydrocarbon having a tertiary carbon atom bearing a saturated hydrocarbon side chain.

Abstract: The desorbing process of the present disclosure includes a step of bringing a solution containing a hydrogenated aromatic compound, at least one of [P((CH2)mCH3)3((CH2)nCH3) (5?m?24, 13?n?24)]+ and [N((CH2)mCH3)3((CH2)nCH3) (5?m?24, 13?n?24)]+, and an anion into contact with an anode; and desorbing hydrogen from the hydrogenated aromatic compound.