Abstract: A negative electrode active material for a secondary battery includes Si-containing particles, wherein the Si-containing particles include a silicon compound phase, a silicon phase dispersed in the silicon compound phase, and a silicon nitride phase dispersed in the silicon. compound phase, and the silicon compound phase is at least one of a silicon oxide phase and a silicate phase.

Abstract: A negative electrode active material for a secondary battery includes a composite material including an active phase that reacts with Li and an amorphous material phase, wherein the active phase is dispersed in the amorphous material phase, and the amorphous material phase includes Si, O, and C.

Abstract: This negative electrode active material for secondary batteries contains a silicon composite material which is provided with a lithium ion conductive phase that contains silicon, and silicon particles that are dispersed in the lithium ion conductive phase. The silicon composite material contains a nitrogen-containing compound in the surface; and the nitrogen-containing compound is represented by general formula LimSiOxNyMz (wherein 0?m?1, 0?x?2.5, 0.025?y?1.33, 0?z?0.5, and M represents a metal element other than Si and Li).

Abstract: A negative electrode for a secondary battery includes a negative electrode mixture layer having a negative electrode active material, a first layer covering at least a portion of a surface of the negative electrode active material, and a second layer covering at least a portion of a surface of the first layer, wherein the first layer includes a carbon material, and the second layer includes silicone.

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: 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: An exemplary organic hydride conversion device for generating a hydrogen gas through organic hydride conversion according to the present disclosure comprises an anode containing a dehydrogenation catalyst, a cathode containing hydrogenation catalyst, and a proton conductor disposed between the anode and the cathode. The proton conductor has a perovskite crystal structure expressed by the compositional formula AaB1-xB?xO3-x. The A element is an alkaline-earth metal and is contained in a range of 0.4<a<0.9, where the a value represents a mole fraction of this element, and the B? element is a trivalent group 3 or group 13 element and is contained in a range of 0.2<x<0.6, where the x value represents a mole fraction of this element.

Abstract: An exemplary organic hydride conversion device for generating a hydrogen gas through organic hydride conversion according to the present disclosure comprises an anode containing a dehydrogenation catalyst, a cathode containing hydrogenation catalyst, and a proton conductor disposed between the anode and the cathode. The proton conductor has a perovskite crystal structure expressed by the compositional formula AaB1-xB?xO3-x. The A element is an alkaline-earth metal and is contained in a range of 0.4<a<0.9, where the a value represents a mole fraction of this element, and the B? element is a trivalent group 3 or group 13 element and is contained in a range of 0.2<x<0.6, where the x value represents a mole fraction of this element.